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NumericalCheck SynchronisingProtection Relay

FeaturesArgus 7 is a combined check and system synchronising relay

which can automatically select check or system synchronise from

measurements of the relative phase angles between line and

bus voltages. The relay will prevent closure of the circuit breaker

if either the phase angle, slip frequency or the voltage magnitude

of the incoming and running voltages fall outside

prescribed limits.

If the parameters are within the limits the relay will issue an

output which can be used to close the circuit breaker directly or

in conjunction with an autoreclose scheme. Both the check and

system synchronise functions have independent settings andblocking features. The relay includes split system detection with

a variable time delay, which can be used for blocking purposes

within delayed autoreclose schemes.

Synchronising bypass logic is provided to connect a dead line

or bus to a live line or bus. For manual synchronising the relay

includes a circuit breaker close guard feature which is used to

prevent the control switch being held closed during a

synchronising operation. This feature is implemented using

internal logic and removes the need for an external relay.

Applications

Protection

Check synchronising (25) and system synchronising

Under voltage blocking (27)

Differential blocking

Control

The basic Argus 7 relay contains 4 programmable digital

(status) inputs with programmable pick-up and drop-off timers

The Argus 7 relay contains 7 programmable output

relays out of which 1 have CO contact 1 have NC contact

and 5 have NO contacts Configurable dead bus and/or dead line charge

Adjustable slip frequency, phase angle and time delay

Integrated manual close guard feature

Independent Check synchronising and system synchronising

settings

Description

Check synchronising (25) and system

synchronising

Numerical Check Synchronising Protection Relay - Argus 7

ARGUS 7

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Monitoring

Split system detection Storage of 500 time-tagged event records

Storage of 5 wave form records

Metering

Primary RMS voltage for both line & bus

Secondary RMS voltage for both line & bus

Frequency of both line & bus

Phase difference between line & bus

Frequency slip between line & bus

Phase - In/out limits

Slip - In/out limits

Line and bus health status (ie live and dead)

Voltage blocking element status

User Interface

Backlit liquid crystal alpha-numeric display with

16-characters, 2 lines

LEDs for check/system sync system split and

protection healthy

Push buttons for programming and resetting

Communication

Fibre optic communication port at rear

Data communication using IEC 60870-5-103 protocol

Wiring Diagram

Notes1. VT Connections are shown for phase-neutral,

phase-phase is also possible.

2. VT & Earth connections are typical only.

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VT Input Rating63.5/110V AC, 50/60Hz

SettingsVT ratio 1:1 to 9999:1

Check sync AUTO, MANUAL

Phase angle 5 to 90 1

Slip timer OFF, 0.1 to 100.0 sec 0.1 sec

Slip frequency OFF, 0 to 2.000Hz 0.005Hz

Dead voltage 5 to 127V 0.5V

Live voltage 10 to 132V 0.5V

Line undervoltage OFF, 22 to 132V 0.5V

Bus undervoltage OFF, 22 to 132V

0.5VDifferential

Voltage OFF, 0.5 to 44V 0.5V

Sync bypass OFF, DL&LB, LL&DB, DL&DB,

DL or DB, DL&/or DB

System split OFF, 90 to 175 1

Split timer OFF, 0.1 to 100.0 sec 0.1 sec

Manual close

guard function OFF/ON

System sync LOCKOUT, AUTO, MANUAL

Phase angle 5 to 90 1

Slip timer OFF, 0.1 to 100.0 sec 0.1 sec

Slip frequency OFF, 0 to 2.000Hz 0.005Hz

Close pulse 0.1 to 2 sec 0.1 sec

DC Auxiliary supplyNominal Operating range

24, 30, 48V 18-60V

110, 220V 88-280V

Output relays The Argus 7 relay contains 7 programmable output relays out

of which 1 have CO contact 1 have NC contact and 5 have

no contacts

Contact ratings

Carry continuously 5A AC or DCMake and carry 30A AC or DC for 0.2sec

Resistive break 75W DC, 1250VA AC

DC digital(status) inputThe Argus 7 relay contains 4 programmable digital (status) inputs

which have programmable pick-up and drop-off timers.

Nominal Operating Range

30 V DC 18 - 37.5V DC

48 V DC 37.5 - 60V DC

110/125 V DC 87.5 - 137.5 V DC

220/250 V DC 175 - 280 V DC

For relays to ESI48-4 standard and 110/125 or 220/250

Technical Information volt DC working a 48 volt digital (status) input is supplied for

use with external dropper resistors:110/125V Resistor 2K7 5% 2.5W

270/250V Resistor 8K2 5% 6.0W

BurdensAC < 0.2VA

DC 3W Quiescent (Typical)

10W maximum

Indications LEDs for check/system sync, system split and protection healthy

indications

LCD - alphanumeric display for settings, instruments and fault

data

EnvironmentalTemperature IEC 68-2-1/2

Operating range -10C to +55C

Storage range -25C to +70C

Humidity IEC 68-2-3

Vibration IEC 255-21-1 class I

Shock and bump IEC 255-21-2 class I

Seismic IEC 255-21-3 class I

Insulation IEC 255-5

2 KVrms for 1 min all terminals to earth.

2 KVrms for 1 min between independent circuits.

1 KVrms for 1 minute across NO contacts.

Transient overvoltage IEC 255-4 class III

5KV 1.2/50s between all terminals and earth without

damage or flashover.

High frequency disturbance IEC 255-22-1 class III

2.5KV common mode < 3% deviation

1.0KV series mode < 3% deviation

Electrostatic discharge IEC 255-22-2 class III

8KV direct without maloperation or damage

Radio frequency disturbance IEC 255-22-3

20MHz to 1GHz at 10V/m < 5% deviation

Fast transient IEC 255-22-4 class IV

4KV 5/50ns < 3% deviation

Mechanical ClassificationDurability 106 operations

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Auxiliary and digital (status) input voltage

Qualification

ISO 9001 - 2000

Cutout Details

Ordering Information

F A C T / A R G U S

7 / 1 2 -

0 5 / R E V

0

Case WeightArgus 7 - E4 3.15 kg

The policy of Easun Reyrolle is one of continuous improvement and development. The company therefore reserves the right to supply equipment, which may

differ slightly from that described and illustrated in this publication.

AUTOMATION DIVISION

Ashirwad, #25, 29th Main,4th B Cross, BTM Layout 2nd Stage,Bangalore-560 076, India.Tel: +91 80 26685496/51311405Fax: +91 80 26685446Email: smabp@easunreyrolle.net

HOSUR WORKS#98, Sipcot Industrial Complex,Hosur 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397

SWITCHGEAR WORKS

Ernavur,Chennai-600 057, India.Tel: +91 44 25733715/358Fax: +91 44 25733468Email: switchgear@easunreyrolle.net

BANGALORE WORKS#17/3 Arakere,Bannerghatta Road,Bangalore-560 076, India.Tel: +91 80 26581023 / 3268Fax: +91 80 26580642Email: blrworks@easunreyrolle.net

EXPORTS DIVISION

#17/3 Arakere,Bannerghatta Road,Bangalore-560 076, India.Tel: +91 80 26581023 / 3268Fax: +91 80 26580642Email: exports@easunreyrolle.net

Sales Offices

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BangaloreTel: +91 80 26685496/51311405Fax: +91 22 26685446Email: blroffice@easunreyrolle.net

BhopalTelefax: +91 755 2684221Email: bhopal@easunreyrolle.net

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SecunderabadTelefax: +91 40 27817847Email: hyderabad@easunreyrolle.net

KolkataTel: +91 33 22848320Fax: +91 33 22848326Email: kolkata@easunreyrolle.net

Corporate Office

Easun Reyrolle Limited. 98 Sipcot Industrial ComplexHosur 635 126 India. Tel: +91 4344 401600/01/02Fax: +91 4344 276397

www.easunreyrolle.com