DGT - Distributed Generation Trip Control · Distributed Generation locations. The DGT system...

Title page

GE Multilin's Quality Management System is

registered to ISO9001:2000

QMI # 005094

GE Digital Energy

GE Digital Energy

215 Anderson Avenue, Markham, Ontario

Canada L6E 1B3

Tel: (905) 294-6222 Fax: (905) 201-2098

Internet: http://www.GEmultilin.com

DGT revision: 3.1x

Manual P/N: 1601-9045-A2

GE publication code: GEK-113441A

Copyright © 2009 GE Multilin

IISO9001:2000GE MULT I L

I N

RE

GISTERED

*1601-9045-

DGT - DistributedGeneration Trip Control

© 2008 GE Digital Energy Incorporated. All rights reserved.

GE Digital Energy DGT Distributed Generation Trip Control System instruction manual for revision 3.1x.

DGT Distributed Generation Trip Control System, EnerVista, EnerVista Launchpad, EnerVista DGT Setup, and FlexLogic are registered trademarks of GE Digital Energy Inc.

The contents of this manual are the property of GE Digital Energy Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Digital Energy. The content of this manual is for informational use only and is subject to change without notice.

Part number: 1601-9045-A2 (January 2009)

FCC Part 15 Notice

The equipment described in this manual complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device is specifically designed to be used under Section 15.247 of the FCC Rules and Regulations. Any unauthorized modification or changes to this device without the express approval of the manufacturer may void the user’s authority to operate this device. Furthermore, this device is intended to be used only when installed in accordance with the instructions provided in this manual. Failure to comply with these instructions may void the user’s authority to operate this device.

TABLE OF CONTENTS

DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL 1–1

Table of contents

1. INTRODUCTIONOverview ..........................................................................................................................1

Cautions and warnings .................................................................................................................................2Description of DGT system operation.....................................................................................................2Description of the DGT system units .......................................................................................................3DGT order codes ...............................................................................................................................................7Example of a DGT order code.....................................................................................................................7Standard features ............................................................................................................................................7Options and Accessories...............................................................................................................................8

Specifications ..................................................................................................................9User interface specifications ......................................................................................................................9Inputs specifications .......................................................................................................................................9Outputs specifications ...................................................................................................................................9Power supply specifications........................................................................................................................9Communications specifications ............................................................................................................. 10Testing and certification ............................................................................................................................ 10Physical specifications................................................................................................................................ 10Environmental specifications .................................................................................................................. 10

2. INSTALLATIONMechanical installation.................................................................................................1

Dimensions..........................................................................................................................................................1Installation Considerations ..........................................................................................................................2Mounting the enclosure ................................................................................................................................3

Electrical installation.....................................................................................................4Terminal identification ...................................................................................................................................4Terminal strip - power connections.........................................................................................................5Terminal strip - IO connections..................................................................................................................5

Antenna and feedline installation...............................................................................7Maintaining regulatory compliance (RF output power)..................................................................7

3. USER INTERFACETransceiver layouts........................................................................................................1PC requirements.............................................................................................................4Connecting to a PC.........................................................................................................5

4. SOFTWAREEnerVista DGT-DG Setup Software..............................................................................1

Installing the EnerVista "DGT-DG" Setup software ...........................................................................1DGT-DG configuration....................................................................................................................................3

EnerVista DGT-Utility Setup Software ........................................................................7Installing the EnerVista "DGT-Utility" Setup software......................................................................7DGT-Utility configuration - Creating a Systems File.........................................................................9DGT-Utility configuration - Creating and uploading a Settings File ...................................... 17

1–2 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL

TABLE OF CONTENTS

5. OPERATIONInitial power-up ..............................................................................................................1Checking for normal, in-service, operation...............................................................2

6. TROUBLESHOOTINGCorrective action ............................................................................................................1Firmware updates ..........................................................................................................4

Updating the DGT-R firmware ................................................................................................................... 4Updating the DGT-U and DGT-D firmware .......................................................................................... 4

7. DGT INTERCONNECT CABLING

8. REPLACEMENT ASSEMBLIES

A. APPENDIXChange notes ..................................................................................................................1

Manual Revision history................................................................................................................................ 1


DGT Distributed Generation Trip Control System

Chapter 1: Introduction

Digital EnergyMultilin

Introduction

1.1 OverviewThe DGT Distributed Generation Control System is a wireless communication system designed to transfer Trip Status signals between a Utility’s substation or recloser site and Distributed Generation locations. The DGT system supports point-to-multipoint, and point-to-point (a point-to-point DGT network consists of one DGT-U unit, and one DGT-D unit) communication over distances up to 30 miles and accommodates up to 6 Distributed Generation locations. There are three main products in a DGT System, the DGT-U, DGT-D and DGT-R.

DGT-U is used in all systems, that is, point-to-point systems (one DGT-U unit and one DGT-D unit), and point-to-multipoint systems (one DGT-U unit, one DGT-R unit, one DGT-U/Recloser unit (optional) and up to 7 individual DGT-D units). It is installed by a Utility at the substation or recloser. It transfers trip signals to remote DG sites and receives status notification back from each, after a trip operation has been completed.

DGT-R is a repeater unit used only in point-to-multipoint systems, and is installed by the Utility at or near the Utility substation, to coordinate wireless communication between the DGT-U/DGT-R and the DGT-D(s).

DGT-D is used in all systems (point-to-point and point-to-multipoint), and is installed at the Distributed Generation site. It receives the trip signal over-the-air from the DGT-U and outputs the status to the user’s breaker device. The DGT-D also accepts a connection from the user’s breaker equipment that confirms the trip status back to the DGT-U.

At the core of all DGT units is a wireless DGT transceiver. The DGT transceivers are frequency hopping; spread spectrum radios designed for license-free operation in the 902-928 MHz ISM band. The 902-928 MHz ISM band is license-free throughout North America. The DGT transceivers employ the latest Digital Signal Processing (DSP) technology to provide highly reliable long distance communication.


OVERVIEW CHAPTER 1: INTRODUCTION

1.1.1 Cautions and warningsBefore attempting to install or use this device, it is imperative that all caution and danger indicators in this manual are reviewed to help prevent personal injury, equipment damage, or downtime. The following icons are used to indicate notes, cautions, and dangers.

Figure 1: Note icons used in the documentation

The standard note icon emphasizes a specific point or indicates minor problems that may occur if instructions are not properly followed.

The caution icon indicates that possible damage to equipment or data may occur if instructions are not properly followed.

The danger icon provides users with a warning about the possibility of serious or fatal injury to themselves or others.

1.1.2 Description of DGT system operationFigure 2: Typical DGT system

In Figure 2, DGT-U units installed at the Utility Substation and Recloser sites continuously monitor the trip status and transmit that status every 7 to 14 milliseconds to DGT-D units installed at the Distributed Generation sites. At the DGT-D locations the trip status is wired into breaker device. An auxiliary contact from the breaker is wired back into the DGT-D. The DGT-D units continuously monitor the status of the auxiliary contact and transmit that status every 28-56 milliseconds back to the DGT-U units constantly confirming current status. All communication is coordinated through the DGT-R Unit in order to achieve maximum range.

NOTE CAUTION DANGER

DGT-R

COMM

TOWER FAULT

1

SUBSTATION

Relay

DGT-UBreaker

23

4

7

UTILITY DISTR. GENERATION

OWNERS

1. Fault in power line or distribution system.

2. Relay at substation detects fault.

3. Relay sends trip command to DGT-U.

4. DGT-U wirelessly sends trip command to DGT-R.

5. DGT-R transfers trip command to DGT-D at DG site.

6. Breaker at DG site trips.

7. DGT-D unit sends status confirmation to DGT-R.

8. DGT-R transfers status info back to DGT-U.

GEN SITE #1

Relay

Breaker

DGT-D5

6

887001A2

GEN SITE #7

Relay

Breaker

DGT-D5

6

DGT-U

Recloser

(optional)

OPTIONAL

CHAPTER 1: INTRODUCTION OVERVIEW


If a trip condition is detected by the Utility’s equipment, the trip status is energized at the DGT-U. When the DGT-D units receive the energized trip status, the output status will disconnect the Breaker device at the Distributed Generation site. The status of auxiliary contact from the breaker is also energized and transmitted back to the DGT-U thereby confirming that the Trip has occurred.

The entire round trip time from trip initiation at the substation into the DGT-U, to confirmation from the DGT-D, occurs in under 300 milliseconds. The integrity of the Trip Status state is maintained through the use of a 32-bit CRC calculation. The CRC prevents the erroneous or malicious manipulation of the Trip Status so that only true data is acted upon. Additional security precautions ensure that only authorized DGT-D devices are able to wireless achieve association with a Utility’s DGT-U and DGT-R devices, so that the integrity of each DGT system is maintained.

1.1.3 Description of the DGT system unitsThe DGT-U, DGT-R and DGT-D, are completely packaged units that includes the appropriate DGT radio transceiver, power supply, necessary input and output terminations, antenna jumper cable and lightning protection contained in a weather resistant, pad lockable enclosure. The only connections required are for primary power, the external antenna cable, and wiring to the external equipment. All of these wiring connections are made within the enclosure leaving no connections exposed to weather. DGT units are designed to be installed in wall-mount or pole-mount configurations. All DGT components are housed in a NEMA-approved enclosure measuring 13.75 inches high x 11.85 inches wide x 6.5 inches deep (35cm x 30.1cm x 16.5cm).

There are internal variations in the components contained in a DGT-U, DGT-D or DGT-R. These variations are shown in Figures 3 through 5



Figure 3: DGT-U layout

Components in the DGT-U are:• A1 – The DGT-U Radio Transceiver• A2 – The 125 V DC / V AC Power Supply• A3 – 125 V DC Relay for Trip Status Output• A4 – 125 V DC Relay for Trip Status Confirmation Input• Terminal blocks for external wiring connections• 10 W self-regulating internal heater• A13 – Bulkhead Lightning Arrestor with Connection for DGT-U Antenna Feedline• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-U

Transceiver• Yagi Directional Antenna (not shown)• Antenna Feedline (not shown)

CE

SDP 2-24-100TSDP 2-24-100T

S O L AS O L A

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

LN

1211109

13 14 15 16

5 6 7 8

4321

POWER SUPPLYPOWER SUPPLY

1 2 3 4 5 6 7 8 9 10 11 12 13 14

DGT-U

ANTENNAANTENNA

A1

POWER

SUPPLY

I/O

ANTENNA CABLE

A2

A3 A4

A13

H

E

A

T

E

R



Figure 4: DGT-R layout

Components in the DGT-R are:• A1 – The DGT-R Radio Transceiver• A2 – The 125 VDC/VAC Power Supply• Terminal blocks for external wiring connections• 10 W self-regulating internal heater• A13 – Bulkhead Lightning Arrestor with Connection for DGT-R Antenna Feedline• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-R

Transceiver• Omni-directional Antenna (not shown)• Antenna Feedline (not shown)

PWR LINKCOM1LAN

+ -

PWR 6-30 VDC(2A max)PWR 6-30 VDC(2A max)

COM2

DGT-R

CE

SDP 2-24-100TSDP 2-24-100T

S O L AS O L A

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

LN

POWER SUPPLYPOWER SUPPLY1 2 3

ANTENNA

A1

POWER

SUPPLY

ANTENNA CABLE

A2

A13

H

E

A

T

E

R



Figure 5: DGT-D layout

Components in the DGT-D are:• A1 – The DGT-D Radio Transceiver• A2 – The 125 VDC/VAC Power Supply• A3 – 125 VDC Relay for Trip Status Output• A4 – 125 VDC Relay for Trip Status Confirmation Input• Terminal blocks for external wiring connections• 10 W self-regulating internal heater• A13 – Bulkhead Lightning Arrestor with Connection for DGT-D Antenna Feedline• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-D

Transceiver• Yagi Directional Antenna (not shown)• Antenna Feedline (not shown)

1211109

13 14 15 16

5 6 7 8

4321

CE

SDP 2-24-100TSDP 2-24-100T

S O L AS O L A

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

LN


1 2 3 4 5 6 7 8

ANTENNADGT-D

A1

POWER

SUPPLY

I/O

ANTENNA CABLE

A2

A3 A4

A13

H

E

A

T

E

R



1.1.4 DGT order codesThe information to specify a DGT unit is provided in the following order code figure.

Figure 6: DGT order codes

1.1.5 Example of a DGT order codeDGT-RH3: DGT-R unit with 125 V DC / V AC power supply, Omni 7.0 dB antenna, and 150 foot long antenna cable (with connectors).

1.1.6 Standard featuresEach unit in the DGT Series comes with a number of standard features, as shown below.

Table 1: Standard features - DGT-UItem Description

DGT-U Control unit for substation application

Power supply 125 V DC / V AC (no internal battery or charger)

I/O 1 input, 8 outputs

LEDs 11 (1 input, 7 output, 1 power, 1 link, 1 service)

Enclosure NEMA 4

Lightning arrester Nominal breakdown voltage 230V

PC Connection cable 1 RJ11 to DB9 - 6 feet long

Field connection hardware Terminal blocks



Table 2: Standard features - DGT-R

Table 3: Standard features - DGT-D

1.1.7 Options and AccessoriesThe DGT Series may be used with one or more of the accessories listed in the following table. Contact the factory for ordering information.

Table 4: Options and Accessories

Item Description

DGT-R Control unit for Repeater


I/O None

LEDs 3 (1 power, 1 link, 1 service)

Enclosure NEMA 4



Item Description

DGT-D Control unit for application at DG site


I/O 1 input, 2 outputs

LEDs 6 (1 input, 2 output, 1 power, 1 link, 1 service)

Enclosure NEMA 4


PC Connection cable 1 RJ11 to DB9 - 6 feet long


Item Description Part Number

Pole-mount Adaptors Allow mounting the DGT enclosure to a pole. Two adapters are required.

82-1743A01

CHAPTER 1: INTRODUCTION SPECIFICATIONS


1.2 Specifications

NOTE

NOTE: Specifications are subject to change without notice.

1.2.1 User interface specificationsGENERALLED indicators: .....................................................3 LEDs on the DGT-R (located on the internal transceiver

module)6 LEDs on the DGT-D (located on the internal transceiver module)11 LEDs on the DGT-U (located on the internal transceiver module)

General device management: ......................Through a PC application

1.2.2 Inputs specificationsGENERALType:..........................................................................Dry contactCoil resistance: .....................................................1400 Ohms maximumPower draw: ..........................................................400 mW

1.2.3 Outputs specificationsGENERALType:..........................................................................Form-A relay (Service output is Form B)Contact material: ................................................silver-alloyOperate time:........................................................<10 msContact material: ................................................Silver alloyContinuous carry: ...............................................5 AMake and carry for 0.2s:..................................30 A per ANSI C37.90Break (DC inductive, L/R: 40 ms): .................

1.2.4 Power supply specificationsPOWER SUPPLYNominal DC:...........................................................125 to 250 V DCMin/max DC:..........................................................100/350 V DCNominal AC: ...........................................................120 to 240 V AC at 50/60 HzMin/max AC: ..........................................................88/260 V AC at 50/60 HzVoltage loss hold-up:.........................................>25 msVoltage withstand: .............................................30 V above maximum ratingPower consumption: .........................................20 to 30 W typical, 60 W maximumInternal fusing: .....................................................Ratings: 2 A/600 V

Interrupt rating: AC=200,000 A, DC=100,000 A

Voltage Current

24 V 1 A

48 V 0.5 A

125 V 0.3 A

250 V 0.2 A


SPECIFICATIONS CHAPTER 1: INTRODUCTION

1.2.5 Communications specificationsRS232 PORTData transfer rate: .............................................19.2 kbpsFormat: ....................................................................8 data bits, no parity bit , 1 stop bit

1.2.6 Testing and certificationCERTIFICATIONISO: ............................................................................Manufactured

under an ISO9001 registered programCSA: ...........................................................................DGT radios are approved for Class 1, Division 2FCC ID:...................................................................... E5MDS-EL806IC ID:..........................................................................3738A-MDSEL806

TYPE TESTSRelative Humidity Cyclic:................................. IEC 60068-2-30: 55° at 95% RHSurge Withstand Capability (SWC) Tests

for Relay Systems Associated with Electrical Power Apparatus: ..................... IEEE C37.90.1:2002

Standard for Withstand capability of Relay Systems to Radiated EMI from Transceivers: ................................................... IEEE C37.90.2:2004

Electrostatic Discharge for Protective Relays: ................................................................ IEEE C37.90.3:2002

Standard for Relays and Relay Systems:. IEEE C37.90:2005

1.2.7 Physical specificationsDIMENSIONSSize: ...........................................................................301 mm (W) × 349 mm (H) × 165 mm (D)Weight (Base):.......................................................9.53 kg

1.2.8 Environmental specificationsOPERATING ENVIRONMENTAmbient operating temperature:................ -40 to 60°CAmbient storage temperature: .................... –40 to 85°C ambientHumidity: ................................................................<90% at 40°C, non-condensing



Chapter 2: Installation


Installation

2.1 Mechanical installationThis section describes the mechanical installation of the DGT system, including dimensions for mounting.

2.1.1 DimensionsThe dimensions of the DGT unit are shown below.


MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION

Figure 1: DGT dimensions

2.1.2 Installation ConsiderationsFor a successful installation, careful thought must be given to selecting the proper site for the DGT-D and its antenna system. The location must be able to support antenna mounting at a height and in a direction that provides an unobstructed radio signal transmission path to associated DGT sites.

The antenna must aim at the antenna located at your Utility’s DGT-R (or the Utility’s DGT-U for point-to-point systems). The Utility will provide you with the direction and coordinates to aim the antenna. In addition, the antenna must be at a suitable height to achieve radio association with the Utility’s equipment. DGT-D equipment is offered with a number of standard options for antenna feedline lengths. Select the feedline length necessary to connect the Yagi antenna to the DGT Unit.

Radio signals travel primarily by line-of-sight, and obstructions between the transmitting and receiving devices will affect system performance. If you are not familiar with the effects of terrain and other obstructions on radio transmission, please contact Multilin for information on arranging a Radio Path Analysis or Site Survey. In addition, the information below will provide helpful background.

TERRAIN AND SIGNAL STRENGTH

A line-of-sight transmission path between the DGT-D sites is highly desirable and provides the most reliable communications link. A line-of-sight path is achieved by mounting the antenna on a tower, pole or other elevated structure that raises it to a height sufficient to clear surrounding terrain and other obstructions.

UMTG. HOLE LAYOUT

8.00"

(203 mm)

12.75"

14.45"

(367 mm)

12.50"

(318 mm)

11.82"

(300 mm)

10.70"

(272 mm)

7.18"

(182 mm)

(312 mm)

Mounting holes

Mounting holes

CHAPTER 2: INSTALLATION MECHANICAL INSTALLATION


The importance of a clear transmission path relates closely to the distance between the DGT-U and the Utility’s DGT-R. If that distance is limited, for example up to 3 miles (4.8 km), then some obstructions in the communications path can usually be tolerated with minimal impact. For longer distances, any substantial obstruction in the communications path could compromise performance or block communications entirely

CONDUCTING A SITE SURVEY

There must be no doubt about the radio path and antenna height needed for your DGT site to associate with other DGT stations. Planning and testing is necessary before a permanent installation is begun. This is done through a path analysis and site survey conducted by a qualified professional. A site survey gathers actual site information and summarizes the installation factors specific to a given site. A computer path analysis based upon the latitude and longitude coordinates of the DGT site assesses factors such as terrain, distance, transmitter power, and receiver sensitivity, which are necessary to predict the performance of the DGT installation.

2.1.3 Mounting the enclosureThere are two basic mounting arrangements for the DGT: wall mount or pole mount. Methods for mounting the unit in both of these configurations follow. When planning the installation, refer to the Dimensions section above, which shows the mounting dimensions of the DGT Assembly.

The steps below describe mounting of the DGT unit to a wall or other flat surface. Ordinary wood screws (with flat washers) can be used for mounting to a wooden surface. If it is to be mounted to a drywall, masonry or other non-wooden surface, suitable fasteners will be required that can support the weight of the unit.

WALL MOUNTING

To wall mount the unit, follow these instructions

1. Hold the unit up to the wall in the desired mounting position. Have an assistant mark the four mounting holes (see Dimensions section above) with a pencil or marker.

2. Prepare the mounting surface for the fasteners to be used. (If using lag screws, a small pilot hole at each mark will allow easier starting of the screw.)

3. Insert the 4 mounting screws and tighten them securely. Do not over-tighten.

POLE MOUNTING

Standard pole mounting requires the use of two pole-mount adapters (P/N 82-1743A01). These brackets must first be bolted to the DGT enclosure. The complete assembly can then be mounted to a wooden utility pole with two lag screws or with two long bolts that extend through the pole. (Threaded rod can also be used for through-the-pole mounting.) In either case, it is important to use flat washers with the attaching hardware (fasteners are not supplied).

To pole mount the unit, follow these instructions:

1. Attach the two pole-mount adapter brackets to the DGT enclosure with four 10-32 screws. The screws must be no longer than 3/8" (9.5 mm). Longer screws will damage the enclosure

2. With the help of an assistant, position the DGT enclosure on the pole at the desired mounting point.

3. Install the attaching hardware (with flat washers) in the center hole of the two brackets.

4. Tighten the fasteners securely, but do not over-tighten.


ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION

2.2 Electrical installationThis section describes the connection of external cabling to the DGT-D Assembly. The figures below show overall views of the connection points for all external cabling and wiring. Subsequent illustrations show more detailed views of power connections as required.

Route the power and I/O signal wiring through the weathertight bushing on the bottom of the enclosure. Do not tighten it until all cabling has been installed. All user connections for power and signal wiring are made to the terminal block.

2.2.1 Terminal identificationFigure 2: DGT-U terminal layout

Figure 3: DGT-R terminal layout

Figure 4: DGT-D terminal layout

1 2 3 4 5 6 7 8 9 10 11 12 13 14

POWER

SUPPLY

I/O

POWER SUPPLYPOWER SUPPLY 1 2 3

POWER

SUPPLY

1 2 3 4 5 6 7 8

POWER

SUPPLY

I/O

CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION


2.2.2 Terminal strip - power connectionsFigure 5: DGT (all models) AC & DC power connections (refer to above terminal layouts)

2.2.3 Terminal strip - IO connectionsFigure 6: DGT Terminal strip IO connections (refer to above terminal layouts)

120 V AC Power Connection 24 V DC Power Connection

887003A1.cdr


ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION

Status #7 Output

4 5 ...

DGT-U, DGT-D:Terminal Strip - Contact Closure

...

CustomerContact Closure

6 7

DGT-D:Terminal Strip - Outputs

...

Trip Output

8

Service Output

Output Common

11 12

DGT-UTerminal Strip - Outputs

...

Status #3 Output

139 1086 7 14

Status #1 Output

Status #2 Output

Status #6 Output

Status #4 Output

Status #5 Output

Service Output

Output Common

CHAPTER 2: INSTALLATION ANTENNA AND FEEDLINE INSTALLATION


2.3 Antenna and feedline installationDGT units are ordered with an antenna and feedline package, ready for installation at the station site. A number of standard feedline lengths are available. The length necessary to connect the station antenna to the DGT is determined during the site survey.

Antennas must be mounted in a location providing an unobstructed radio signal path to associated stations. Radio signals at UHF travel primarily by line-of-sight, and obstructions between the transmitting and receiving devices will affect system performance. A line-of-sight path is achieved by mounting the DGT antenna on a pole, tower, or other elevated structure that raises it to a height sufficient to clear surrounding terrain and other obstructions.

The importance of a clear transmission path relates closely to the distance between DGT units. If that distance is limited, for example up to 4.8 km (3 miles), then some obstructions in the communications path can usually be tolerated with minimal impact. For longer distances, any substantial obstruction in the communications path could compromise performance or block communications entirely. If you are not familiar with the effects of terrain and other obstructions on radio transmission, please contact Multilin for information on arranging a Radio Path Analysis or Site Survey

ANTENNA INSTALLATION - DGT-U and DGT-D

The antenna supplied with DGT-D and DGT-U units is a directional Yagi type that must be properly aimed at the DGT-R site with which it will communicate.

Follow these steps to install the antenna at DGT-D and DGT-U sites:

1. Mount the antenna securely to a pole or other support structure with the hardware provided.

2. Aim the antenna directly at the DGT-R site with which the unit will communicate. (The direction of maximum transmission/reception is opposite the antenna mounting bracket).

3. Secure the coaxial cable to the mounting pole and route it to the DGT enclosure.4. Connect the antenna cable to the Type-N connector at the bottom of the DGT

enclosure. Tighten the connector securely.

ANTENNA INSTALLATION - DGT-R (Point-to-Multipoint systems only)

DGT-R (Repeater) units are furnished with an omni-directional antenna that does not require aiming. However, it is still important to mount the antenna at a height that allows an unobstructed path to the stations it will serve. Omni-directional antennas are typically mounted to a pole.

Follow these steps to install the antenna at DGT-R sites:

1. Secure the antenna to the mounting pole or other support structure with the hardware provided.

2. Connect a low-loss coaxial cable to the antenna and tighten the connector securely.3. Secure the coaxial cable to the mounting pole and route it to the DGT enclosure.4. Connect the antenna cable to the Type-N connector at the bottom of the DGT

enclosure. Tighten the connector securely.

2.3.1 Maintaining regulatory compliance (RF output power)The transceiver is normally supplied from the factory set for a nominal +30 dBm RF power output; this is the maximum transmitter output power allowed under FCC/IC rules. The power must be decreased from this level if the antenna system gain exceeds 6 dBi. The


ANTENNA AND FEEDLINE INSTALLATION CHAPTER 2: INSTALLATION

maximum allowable RF level from the transceiver is dependent on the gain of the antenna and feedline loss. In all cases, the maximum EIRP from the antenna must not exceed 36 dBm. Contact GE Multilin if assistance is required in determining the maximum output power setting.

SAFETY / EARTH GROUNDING

DGT equipment is equipped with an internal surge suppression module to protect against nearby lightning discharges or spikes on the antenna feedline. To minimize the chances of lightning and surge damage, a good safety ground is required. This ground must bond the antenna system, the DGT unit, power supply, and all connected data equipment to a single-point ground.

Equipment grounds should be bonded together and connected to the facility’s main ground system for primary power. The objective is to create a single-point ground system, keeping all grounds leads as short as possible.



Chapter 3: User interface


User interface

3.1 Transceiver layoutsDGT-U Transceiver layout

• Power LED shall illuminate when power is applied to the radio.• The Link LED illuminates when the DGT-D transceiver has established a connection

with a DGT-R transceiver.• The Service (SERV) LED flashes whenever a transceiver alarm condition is detected or

if any of the configured outputs are in a failsafe state.

RF OUTPUT◆

◆

Antenna Connector (TNC)902 to 928 MHz (FHSS)

CONFIGURATIONÊDCE Console/Terminal◆

◆ 19,200 bps/8N1 (Default)No HandshakingRS/EIA-232

◆

◆

1 to 45 to 8

TERMINATIONS

9 to 1213 to 16

TERMINATIONS

LED PANELPower, Link, Inputs/Outputs◆

(configurations vary)

+ Ð Ð+

PWR

LINK

SERV

IN

OUT-1

OUT-2

CONFIG

ANT

OUT-3

OUT-4

OUT-5

OUT-6

OUT-7

PRIMARY POWER◆ 13.8 Vdc @ 350 mA (6 to 30 Vdc)

Negative Ground1 + / 2

◆

◆ -

24 VDC POWER OUTPUT◆

◆

24.0 Vdc @ 40 mAIsolated from GroundPins 3 (+) and 4 (-)◆


TRANSCEIVER LAYOUTS CHAPTER 3: USER INTERFACE

• The input LED (IN) is illuminated whenever the trip status is energized.• The output LED (OUT-1) illuminates whenever the associated output is energized.

OUT-1 will reflect the state of the status input on the DGT-D radio configured for Slot 1 within the network. If the output is in a failsafe state, the LED shall flash a unique pattern to indicate this state.

• The output LED (OUT-2) illuminates whenever the associated output is energized. OUT-2 will reflect the state of the status input on the DGT-D radio configured for Slot 2 within the network. If the output is in a failsafe state, the LED shall flash a unique pattern to indicate this state.




• The output LED (OUT-6) illuminates whenever the associated output is energized. OUT-6 will reflect the state of the status input on the DGT-D radio configured for Slot 6 within the network. If the output is in a failsafe state, the LED shall flash a unique pattern to indicate this state


DGT-R Transceiver layout

• Power (PWR) LED illuminates when power is applied to the radio. When the transceiver is experiencing a fault condition, the Power LED flashes once per second.

COM1

PWR

LINK

COM1DCE (Console/Terminal only)◆

◆ 19,200 bps/8N1No HandshakingRS/EIA-232

◆◆ RESERVED

This port reserved for future expansion◆

PRIMARY POWER◆ 6 to 30 Vdc (800 ma @ 13.8 Vdc)

Negative Ground◆

ANTENNA50 Ohm◆ TNC+30 dBm/1W Out (Max.)-30 dBm Input (Max.)

◆◆

REPROGRAMMING PORTFor reprogramming firmware10-Base-T

◆◆◆ IP/Ethernet Port

IP Address: 192.168.0.1◆

CHAPTER 3: USER INTERFACE TRANSCEIVER LAYOUTS


• The COM1 LED blinks with serial traffic activity to and from the COM1 serial interface.• The LINK LED illuminates during normal operation and blinks when there is over-the-

air traffic activity.

DGT-D Transceiver layout

• Power (PWR) LED illuminates when power is applied to the radio.• The Link LED illuminates when the DGT-D transceiver has established a connection

with a DGT-R transceiver.• The Service (SERV) LED flashes whenever a transceiver alarm condition is detected or

if any of the configured outputs are in a failsafe state.• The input LED (IN) is illuminated whenever the auxiliary contact from the breaker is

energized.• The output LED (OUT-1) illuminates whenever the associated output is energized.

OUT-1 reflects the state of the trip input on the DGT-U within the network. If the output is in a failsafe state, the LED flashes a unique pattern to indicate this state. If the output is configured and mapped to two inputs (when taking Trip signals from a Recloser) and data is only being received from one of the two inputs, the LED flashes a unique pattern to indicate this state.

• The output LED (OUT-2) is reserved for future use.

RF OUTPUT◆

◆

Antenna Connector (TNC)902 to 928 MHz (FHSS)

CONFIGURATIONDCE Console/Terminal◆

◆19,200 bps/8N1 (Default)No HandshakingRS/EIA-232

◆

◆

1 to 45 to 8

TERMINATIONS

9 to 1213 to 16

TERMINATIONS

LED PANELPower, Link, Inputs/Outputs◆

(configurations vary)

+ +

PWR

LINK

SERV

IN

OUT-1

OUT-2

CONFIG

ANT

PRIMARY POWER◆ 13.8 Vdc @ 350 mA

(6 to 30 Vdc)Negative Ground1 + / 2

◆

◆ -

24 VDC POWER OUTPUT◆

◆

24.0 Vdc @ 40 mAIsolated from GroundPins 3 (+) and 4 (-)◆

- -


PC REQUIREMENTS CHAPTER 3: USER INTERFACE

3.2 PC requirementsThe following minimum requirements must be met for the EnerVista DGT Setup software to operate on your computer.• Pentium class processor (700 MHz or better recommended)• Microsoft Windows XP / Vista• 256 MB of RAM (512 MB recommended)• Minimum of 50 MB hard disk space (200 MB recommended)

CHAPTER 3: USER INTERFACE CONNECTING TO A PC


3.3 Connecting to a PCFigure 1: Typical RS232 connection between PC and any DGT radio (DGT-U, DGT-R, or DGT-D)

RS232 CONNECTION

ANY DGT RADIO

PC

RJ11 Connector

DB9 Connector


CONNECTING TO A PC CHAPTER 3: USER INTERFACE



Chapter 4: Software


Software

4.1 EnerVista DGT-DG Setup Software

4.1.1 Installing the EnerVista "DGT-DG" Setup softwareAfter ensuring the above minimum requirements, use the following procedure to install the EnerVista DGT-DG Setup software from the enclosed GE EnerVista CD or the EnerVista website.

1. Insert the GE EnerVista CD into your CD-ROM drive.2. Click the Install Now button and follow the installation instructions to install the no-

charge EnerVista software on your local PC.3. When installation is complete, start the EnerVista Launchpad application.4. Click the IED Setup section of the Launch Pad toolbar.


ENERVISTA DGT-DG SETUP SOFTWARE CHAPTER 4: SOFTWARE

5. In the EnerVista Launchpad window, click the Add Product button near the top of the window.

NOTE

NOTE: Only one of the two EnerVista Setup programs - the EnerVista DGT-Utility (used by the Utility), or the EnerVista DGT-DG (used by the Distributed Generator), can be loaded on a single computer.

6. Select the EnerVista DGT-DG Setup program as shown above. Select the Web option to ensure you obtain the most recent software release, or select CD if you do not have a web connection, then click the Add Now button

7. EnerVista Launchpad will obtain the latest installation software from the Web or CD and automatically start the installation process. A status window with a progress bar will be shown during the downloading process.

CHAPTER 4: SOFTWARE ENERVISTA DGT-DG SETUP SOFTWARE


8. Select the complete path, in your PC, including the new directory name, where the EnerVista DGT-DG Setup software will be installed.

9. Click on Next to begin the installation. The files will be installed in the directory indicated, and the installation program will automatically create icons and add EnerVista DGT-DG Setup software to the Windows start menu.

10. Click Finish to end the installation. The DGT device will be added to the list of installed IEDs in the EnerVista Launchpad window, as shown by the arrow below.

11. To start the EnerVista DGT-DG Setup application, click on the DGT-DG icon in the above window.

4.1.2 DGT-DG configurationThe DGT-D Settings File will have been sent to you by the Utility with whom your generating system is associated (see previous section).

1. Download this file into your computer: Create a folder specifically for your DGT and put the file into this folder.



2. Once you have installed your EnerVista DGT-DG Setup program, start the program as indicated earlier. The main screen will appear as follows

3. Press the Quick Connect button near the top left edge of the screen. The following window will appear:

4. Using the dropdown box shown above, select the COM port (to which you have connected your communications (RS232) cable) and press the Connect button. The program will search for your connected DGT-D unit and after a few seconds, will insert information on the main screen as shown:

CHAPTER 4: SOFTWARE ENERVISTA DGT-DG SETUP SOFTWARE


5. To bring your distributed generating system online as part of the overall Utility system, select Send Settings File. In the window that appears, go to the folder that you created (in this case, the DGT folder) and select the .hkf file. The file name is composed of two parts: (1) The device number (or "R" in the case of the Recloser), and (2) the serial number of the device.

6. Press the Open button:

7. To send the file to your DGT-D device, press Yes. After a few seconds, the following information screen will appear:

Your DGT-D unit is now communicating with the Utility.

NOTE

NOTE: If any attempt is made to send a Settings File to a unit whose serial number does not match in some way, the following error message will be displayed:

A similar error message will be displayed if there is a communications error in the system.If you have more than one generating system to connect, repeat the above procedure (4 to 7) for each system. The Quick Connect procedure (item 3 above) will have already "found" each of your DGT-D units.

8. There are some extra features in the Online Window that you can find quite useful when dealing with the DGT devices:

• Diagnostic – gets current settings from the device. These settings can be stored in a text file and, in case of necessary, sent later to the technical support team.

• Status – gets the synchronization status of the device.• Logout – forces system to logout.9. If you double click upon Diagnostics node in the Online window, the next window will

appear:



Pressing the Save to File button saves the Diagnostics information in a text file, which, if necessary, can be sent to a technical support team for analysis.

10. If you double click upon Status node, the next window will appear:

The Status window continuously shows the synchronization state of the DGT system. The status of the system is updated continuously every 5 seconds.

11. To log out of EnerVista DGT-DG. Click on Logout. Once you log out, you have to press the Quick Connect button to log back in. This feature is generally used when a situation arises that necessitates a formal logout. Any accidental disruption (computer breakdown for example) of the system will NOT log you out of the system; it will still be active after the disruption is corrected. Manual logout avoids this. Under normal operating conditions, the system will automatically log out when it has been inactive for 5 minutes (unchangeable default).

CHAPTER 4: SOFTWARE ENERVISTA DGT-UTILITY SETUP SOFTWARE


4.2 EnerVista DGT-Utility Setup Software

4.2.1 Installing the EnerVista "DGT-Utility" Setup softwareAfter ensuring the minimum requirements, indicated above, have been met, use the following procedure to install the EnerVista DGT-Utility Setup software from the enclosed GE EnerVista CD or the EnerVista web site.

1. Insert the GE EnerVista CD into your CD-ROM drive.2. Click the Install Now button and follow the installation instructions to install the no-

charge EnerVista software on your local PC.3. When installation is complete, start the EnerVista LaunchPad application.4. Click the IED Setup section of the LaunchPad toolbar.

5. In the EnerVista Launchpad window, click the Add Product button near the top of the window..


ENERVISTA DGT-UTILITY SETUP SOFTWARE CHAPTER 4: SOFTWARE

NOTE

NOTE: Only one of the two EnerVista Setup programs - the DGT-U (used by the Utility) or the DGT-DG (used by the Distributed Generator owner), can be loaded on a single computer.

6. Select the EnerVista DGT-Utility Setup program as shown above. Select the Web option to ensure you obtain the most recent software release, or select CD if you do not have a web connection, then click the Add Now button.

7. EnerVista Launchpad will obtain the latest installation software from the Web or CD and automatically start the installation process. A status window with a progress bar will be shown during the downloading process.

8. Select the complete path in your PC, including the new directory name, where the EnerVista DGT-Utility Setup software will be installed.

9. Click on Next to begin the installation. The files will be installed in the directory indicated, and the installation program will automatically create icons and add EnerVista DGT Setup software to the Windows start menu.

10. Click Finish to end the installation. The DGT device will be added to the list of installed IEDs in the EnerVista Launchpad window, as shown by the arrow below.



11. To start the EnerVista DGT-Utility Setup application, click on the DGT-Utility icon in the above window.

4.2.2 DGT-Utility configuration - Creating a Systems FileThe EnerVista Setup program for all the DGT units - DGT-U, DGT-U (Recloser), DGT-R, and DGT-D (1 to 7 units) - allows the Utility to handle associated DGT information both on-line and offline. In the latter case, information is uploaded to the specific DGT unit at the user’s convenience. Using EnerVista, the Utility can create the appropriate Settings Files for the DGT-U, DGT-R, and DGT-D units. One DGT-U unit is used for each single DGT network. Summarizing: Each DGT (point -to-multipoint) network consists of one DGT-U unit, one DGT-R unit, one DGT-U/Recloser unit (optional) and up to 7 individual DGT-D units. Each DGT (point-to-point) network consists of one DGT-U unit and one DGT-D unit.



1. As indicated in the previous section, open the DGT Utility Setup program:

2. To define the framework of each DGT network, click on File > New System File. The following dialog box will appear:

3. Type in the filename of the system file you are going to create:



4. When you click on Save, one of the following dialog boxes (forms) will appear:



5. Below are typical examples of each form:



NOTE

NOTE: The first two fields - System Name (minimum 1 character) and Security ID (minimum 2 characters) are mandatory fields. Unless you fill them in with some values, the OK button will remain disabled, so that it will not be possible to save your changes to the file. Some other restrictions are applied to the content of these fields:

– Field “System Name” must contain at least 1 and maximum 64 characters – Field “System ID” must contain at least 1 and maximum 64 characters. No any

national alphabet symbols (but English) are allowed here.– Fields “Serial Number” can contain from 1 to 64 characters, but they can be

digital characters only.If an additional DGT-U unit is to be used as a Recloser, the Configure Recloser box must be checked, as follows:

6. Press OK and note that we have just created a new tree’s brunch named “Substation_1,” which additionally contains the folder’s name in which the created System file resides. Now if you open this node (one click upon the “+” sign will be enough) you will note that the appropriate information, including the Recloser information, if selected, appears in the sub branches in the Offline window::



7. Clicking on the DGT-R line will bring up the form below which will allow you to enter the name and serial number of the DGT-R, as well as other information:

NOTE

NOTE: • The top two fields Name and Serial Number are mandatory and should be filled up in order to be able to store changes.

• Only the content of these two fields can be uploaded to the device. The rest of the information should be considered as reference data for users only.

8. Clicking on the DGT-U line will bring up the form shown below, this one containing the serial number that you already input, as well as space for similar substation-related information.



NOTE



9. Click on the “+” sign on the DGT-U node in the Offline window. This will bring up the following:

10. Initially all the DGT-D sites are empty. You can assign the appropriate DGT-D device to each site by double clicking upon the empty site node – then the DGT-D device dialog will appear.

11. Following is an example of the completed DGT-D device dialog box:



NOTE



12. After you press the OK button, the System file tree will change as shown here:

NOTE

NOTE: Once you have created a DGT-D description and assigned it to the site on the DGT-U device, you can edit or delete it .

13. Clicking on a DGT-U RECLOSER line will bring up the form shown below, this form containing the serial number that you already input, as well as space for similar substation-related information:



NOTE



As we have reached this point we have created an System file with all the appropriate information and now we are ready to go further for configuring DGT System - generate Settings files (based on the System file) and upload them to the appropriate devices.

4.2.3 DGT-Utility configuration - Creating and uploading a Settings File

The Settings File is part of the whole DGT System configuration, and is related to a dedicated device within the system. The important things to know about the Settings File are:• The Settings File for a particular device should be generated or updated before being

uploaded to the device. • The Settings File can be generated automatically (the system will do it for you) or

manually (by user request). In the latter case, the user can specify explicitly which file name he/she wants to assign to it .

• Each Settings File contains the device number in an encrypted format, so this file can be correctly uploaded to the device only with the exact same number. If not, an error message will appear during the upload process.

To create Settings Files, follow the steps below:



1. As indicated in the previous section, open the DGT Utility Setup program:

2. In the Offline window, find the System File you have just created.

3. Now lets invesigate the content of the folder.

4. As you can see there are two items – the System File itself and an additional subfolder with the exact the same name as a System File (minus extension) – “Substation_1” in our scenario. If you open the subfolder you will see a number of files placed inside.



Let’s take a closer look over the name convention which is in use when the files are created automatically. You will notice that the file name consists of 2 parts: 1 character (letter or digit and a number separated by underscore. Please note that this number is a device serial number (which we input before) and the first character specifies the type of the device. There are other conventions currently in use, as follows:– ‘r’ – states for DGT-R Repeater– ‘1’ – states for DGT-U Primary– ‘2’ – states for DGT-U Recloser (if any)– ‘3’ to ‘9’ – states for DGT-D device assigned to DGT-U Primary site (the formula is:

n = Site number + 2).In our example we can easily see that file “3_1729024.hkf” has been created for the device DGT-D assigned to site 1 of DGT-U Primary and its serial number is 1729024.

NOTE

NOTE: If the user makes any significant changes to the device description (significant means any changes that affect the information uploaded to the device), the auto–generated Settings Files will be edited automatically and the appropriate message will appear.

5. The other way to create a Settings File for the particular device is to do it manually. In such case we select the device in the System File node first, right-mouse click and from the drop-down menu, select the command Generate Settings File (this can also be done using the Offline window):

6. You will then be asked to provide a file name and location for the new Settings File you are about to create. Let’s type something like “Test_DGT_D_Device_Site1,” then press the Save button:



NOTE

NOTE: It’s always a good idea for the user to create “significant” file names.

So we now have one extra file in the default System Files folder:

The final stage of the configuration of the DGT System is to upload the newly entered / modified data to the appropriate Device(s). In this situation, the term “upload” means to set the internal device’s variables with the appropriate values specified in the System File. For the current version of the hardware, we have only one way to do this: use a COM port connection. So as we have a DGT device connected via a COM port to a PC, with correctly installed DGT-Utility or DGT-DG software, and we have a correctly configured System File (or, at least, a set of appropriate Settings Files), we can start the uploading process.



7. Use the Quick Connect button, located just above the Online window, to "find" each of the DGT units (DGT-U, DGT-R, and DGT-D) to which you are connected. Each DGT unit is connected to your COM port using a single removable cable. Select the appropriate COM port and press the Connect button.

Information on all connected DGT units will appear in the online window as shown below:

NOTE

NOTE: As we can see, the type of the device is “DGT-U Primary” and the serial number is: 1729022. If we are going to upload an auto-generated Settings File, the correct file name should be “1_1729022.hkf” (see the previous section for details).

8. To upload the generated Settings File to the respective device, click on Send Settings File in the Online Menu, or select Online from the Main Menu, then select Send File to Device.

9. From the window that appears, select the Settings File you want to send, then click the Open button. You will be asked to confirm the action:



Press the Yes button and the uploading will begin. This process normally takes 20-30 seconds. After it's done, and if the Settings File has been successfully accepted by the device, you will get another message:

Information in the Online window will be updated accordingly.Otherwise you will get an error message:

10. The other way to upload to the device is to do this directly, without using an intermediate Settings File. In the Offline window you can select the desired device’s node, then select the Send to Online Device command from the context menu (right mouse click):

11. There are some extra features in the Online Window that you may find quite useful when dealing with the DGT devices:

• Diagnostic – gets current settings from the device. These settings can be stored in a text file and, in case of necessary, sent later to the technical support team.

• Status – gets the synchronization status of the device.• Logout – forces system to logout.12. If you double-click upon the Diagnostics node in the Online window, the next window

will appear:



13. If a number of changes have been made to Settings Files, send all Settings Files send ALL the Settings Files to the devices to ensure that the devices are operating using the latest file updates.

14. If you click on Diagnostics, this window will appear:

Pressing the Save to File button saves the Diagnostics information in a text file, which, if necessary, can be sent to a technical support team for analysis.

15. If you click on Status, this window will appear:

The Status window continuously shows the synchronization state of the DGT system. The status of the system is updated continuously every 5 seconds.

16. To log out of EnerVista DGT-Utility. Click on Logout. Once you log out, you have to press the Quick Connect button to log back in. This feature is generally used when a situation arises that necessitates a formal logout. Any accidental disruption (computer breakdown for example) of the system will NOT log you out of the system; it will still be active after the disruption is corrected. Manual logout avoids this. Under normal operating conditions, the system will automatically log out when it has been inactive for 5 minutes (unchangeable default).



Chapter 5: Operation


Operation

5.1 Initial power-upWhen primary power is applied to the DGT-U, DGT-R or DGT-D, the device is ready for configuration or if already configured, for in service operation. Once power is applied check for normal operation by confirming that the red PWR (Power) LED is lit continuously. If not, please re-check all power wiring.

If configuration of the DGT device is necessary, please refer to Chapters 3 and 4 for information.


CHECKING FOR NORMAL, IN-SERVICE, OPERATION CHAPTER 5: OPERATION

5.2 Checking for normal, in-service, operationOnce a DGT Unit is configured and ready for operation please review the following summaries depending upon which type of DGT you are checking.

DGT-U Normal Operation• The PWR (Power) LED is illuminated continuously when power is applied.• The LINK LED is illuminated continuously. Note that the DGT-R that the DGT-U will

communicate with MUST be powered on, fully configured and fully functional for the LINK LED to be illuminated.

• The SERV (Service) LED is not flashing.• The IN LED will be lit only when energized in the event of a Trip. If there is no Trip

condition then this LED should be off.• The output LEDs, OUT-1 through OUT-7, reflect the status of the DGT-D assigned to it .

LED OFF is DGT-D status de-energized. LED ON is DGT-D status energized.

If any of these indications is behaving differently, please see section 6-1 for corrective actions.

DGT-R Normal Operation• The PWR (Power) LED is illuminated continuously when power is applied.• The LINK LED is illuminated continuously. Note that the LED will blink when the DGT-R

is passing data over-the-air between the DGT-U and DGT-D devices.• The COM1 LED blinks only when there is serial communication traffic during

configuration.

If any of these indications are behaving differently, please see section 6-1 for corrective actions.

DGT-D Normal Operation• The PWR (Power) LED is illuminated continuously when power is applied.• The LINK LED is illuminated continuously. Note that the DGT-R with which the DGT-D

will communicate MUST be powered on, fully configured and fully functional for the LINK LED to be illuminated.

• The SERV (Service) LED is not flashing.• The IN LED will be lit only when energized in the event of a Trip. If there is no Trip

condition, this LED should be OFF.• The OUT-1 LED reflects the status of the DGT-U trip status. LED OFF is DGT-U trip

status de-energized. LED ON is DGT-U trip status energized.• The OUT-2 LED is reserved for future use

If any of these indications are behaving differently, please see section 6-1 for corrective actions.



Chapter 6: Troubleshooting


Troubleshooting

6.1 Corrective actionPlease refer to the following tables for a summary of LED error status and possible corrective actions:


CORRECTIVE ACTION CHAPTER 6: TROUBLESHOOTING

DGT-U

DGT-R

Observed Status Meaning Corrective Action

PWR (Power) LED Off No power to DGT-U Re-check power source and wiring to the terminal block.

LINK LED Off No wireless connectivity to DGT-R

• Check that the DGT-R is powered on and fully operational§

• Check that the DGT-U antenna is properly aimed at the DGT-R antenna§

• Re-check proper configuration of DGT-U

SERV (Service) LED Flashing Alarm condition or Failsafe state

• Indicates that the DGT-U has entered a failsafe state. This means that communication with one or more DGT-D devices has been lost. One or more OUT LEDs on the DGT-U should be flashing. Note which OUT LED is flashing and check the appropriate DGT-D for proper operation. Note that if all OUT LEDs are flashing, then communication with the DGT-R could be lost.§

• Indicates that the DGT-U has encountered an alarm condition. Contact Technical Support for recommendation.

OUT-1, OUT-2, OUT-3, OUT-4, OUT-5, OUT-6, OUT-7 LED Flashing

Failsafe state Indicates loss of communication with the DGT-D associated with this output. Check for proper operation of the appropriate DGT-D


PWR (Power) LED Off No power to DGT-R Re-check power source and wiring to the terminal block.

PWR (Power) LED Flashing Fault condition Connect DGT Configuration software and read diagnostics summary. Contact Technical Support for recommendation.

LINK LED Off No wireless connectivity

Contact Technical Support for recommendation.

CHAPTER 6: TROUBLESHOOTING CORRECTIVE ACTION


DGT-D


PWR (Power) LED Off No power to DGT-D Re-check power source and wiring to the terminal block.

LINK LED Off No wireless connectivity to DGT-R

• Check that the DGT-R is powered on and fully operational§

• Check that the DGT-D antenna is properly aimed at the DGT-R antenna§

• Re-check proper configuration of DGT-D

SERV (Service) LED Flashing Alarm condition or Failsafe state

• Indicates that the DGT-D has entered a failsafe state. This means that communication with one or more DGT-U devices has been lost. The OUT-1 LED should also be flashing. Check the configuration of the DGT-D to insure proper configuration. Confirm that DGT-U devices are operational. Confirm that the DGT-R is operational.§

• Indicates that the DGT-D has encountered an alarm condition. Contact Technical Support for recommendation.

OUT-1 LED Flashing Failsafe state Indicates loss of communication with one or more devices. Check the configuration of the DGT-D to insure proper configuration. Confirm that DGT-U devices are operational. Confirm that the DGT-R is operational.


FIRMWARE UPDATES CHAPTER 6: TROUBLESHOOTING

6.2 Firmware updates

6.2.1 Updating the DGT-R firmwarePlease contact GE Multilin for information on DGT-R firmware updates.

6.2.2 Updating the DGT-U and DGT-D firmwarePlease contact GE Multilin for information on DGT-U and DGT-D firmware updates.



Chapter 7: DGT interconnect cabling


DGT interconnect cabling

Figure 1: DGT-U wiring

11 4

5

12

9

13 16

8

TO LIGHTNING ARRESTOR A25TO LIGHTNING ARRESTOR A25

A1A2

11

14

11

14

11

14

11

14

11

14

11

14

11

14

11

12

A1A2 A1A2 A1A2 A1A2 A1A2 A1A2 A1A2

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

LN

1211109

13 14 15 16

5 6 7 8

4321

A1

NETio-DG

A2


TERMINAL BLOCKS

A3 A4 A5 A6 A7

A10A9A8

RELAYS

WITH SOCKETWITH SOCKET

A11

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

A24

CUSTOMER CONNECTIONCUSTOMER CONNECTION

TO: A24

TO: A2(-)

TO

:A

13

TO

:A

27

TO

:A

26

TO: A8(2)

TO: A9(2)

TO: A10(2)TO: A7(2)

TO: A3(2)

TO: A4(2)

TO: A6(2)

TO: A5(2)

TO: A2(-)

TO: A15

TO: A2(-)

TO: A2(+)

TO: A14

TO

:A

20

TO

:A

17

TO

:A

18

TO

:A

19

TO

:A

16

TO

:A

21

TO

:A

22

TO

:A

23

A26

FUSES

A27

TO: A12

TO: A11

A28 HEATERA28 HEATER

TO: A2(-)

TO: A2(+)


CHAPTER 7: DGT INTERCONNECT CABLING

Figure 2: DGT-R wiring

Figure 3: DGT-D wiringCUSTOMER CONNECTIONCUSTOMER CONNECTION

A4

A3

TERMINAL BLOCKS


A2

A1

NETio - DG MASTERNETio - DG MASTER

A5

TO

:A

2(+

)

TO

:A

2(-)

TO

:A

5

TO

:A

9

TO

:A

8

TO LIGHTNING ARRESTOR A6TO LIGHTNING ARRESTOR A6

FUSES

A8

HEATER

A7

A9

TO: A7(+)

TO: A7(-)

CE

SDP 2-24-100TSDP 2-24-100T

Power SupplyPower Supply

S O L AS O L A

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

LN

COM2

PWR 6-30 VDC(2A max)PWR 6-30 VDC(2A max)

-+

LAN COM1 LINKPWR

CCE

SDP 2-24-100TSDP 2-24-100T

Power SupplyPower Supply

S O L AS O L A

24-28 V24-28 V

OK

24 VDC/2.1A24 VDC/2.1A

--++

1 4

5

129

13 16

8

TO LIGHTNINGTO LIGHTNING

ARRESTOR A13

1211109

13 14 15 16

5 6 7 8

4321

A1

NETio-DG

A2


TERMINAL BLOCKS

A4A3

RELAYS

WITH SOCKETWITH SOCKET

A5

A6

A7

A8

A9

A10

A11

A12

CUSTOMER CONNECTIONCUSTOMER CONNECTION

TO: A2(-)

TO: A2(+)

TO: A11

TO: A3(2)

TO: A10

TO: A2(-)

TO: A9

TO: A4(2)

A14

FUSES

A15

HEATER

A16

TO: A2(-)

TO: A2(+)

14 12

11 11

A2 A1 A2 A1

TO: A12

TO: A2 (-)TO: A2 (-)

TO: A5

TO: A6

TO

:A

7

TO

:A

15

TO

:A

14

TO: A8

N L



Chapter 8: Replacement assemblies


Replacement assemblies

DGT Spare Parts and Replacement Assemblies

Please contact GE Multilin for information on components or parts not shown on the list.

Part Number Description

03-4785A01 DGT-U Radio Transceiver

03-4784A01 DGT-R Radio Transceiver

03-4793A01 DGT-D Radio Transceiver

29-4614A01 AC/DC Fuse for DGT-U, DGT-R, and DGT-D

31-1113A23 DPDT Relay for DGT-U and DGT-D

28-2334A14 125 VAC/VDC Power Supply - 24 V for DGT-U, DGT-R, and DGT-D

93-3194A13 6.4 dBd Gain Yagi Antenna for DGT-U and DGT-D

93-3194A17 7.0 dBd Gain Omni Antenna for DGT-R

03-2198A05 RJ12 to RJ12 serial cable for connection to DGT-U, DGT-R, and DGT-D Transceivers

73-2434A02 DB9 Female Adaptor for serial cable


CHAPTER 8: REPLACEMENT ASSEMBLIES

DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL a–1


Appendix

Digital Energy

Appendix

A.1 Change notes

A.1.1 Manual Revision history

Table A–1: Revision History

MANUAL P/N RELEASE DATE ECO

1601-9045-A1 2 April 2008

1601-9045-A2 27 January 2009

Table A–2: Major Updates for DGT-A2

Section Number CHANGES

Manual revision number from A1 to A2

Cover Firmware revision number - 3.1x

1.1 Definitions of point-to-point and point-to-multipoint added

Fig 1-2 Revised

1.1.2 Changes to descriptions

General Minor text changes

a–2 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL

CHANGE NOTES APPENDIX

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