IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings,...

2008 Eaton Corporation. All rights reserved.©

IZMX trip unit, settings, tripping curves

Ralf Nikolic/ PM ACB (air circuit breaker)

December, 15th 2011

Trip unit

1. Overview around trip units

Trip unitCommon trip units for IZMX16 and IZMX40

A-Type520 LI

V-Type520 LSI(G)

U-Type520M LSI(G)

P-Type1150 LSI(G/A)

Basic functions and optional functions

Trip units – basic offer Sample:IZMX40H3-A32W

Distribution protection

Selective protection

Universal protection

Professional protection

Catalog - overview

Page 6

Catalog - overview

Page 7

Catalog - excerp:Further trip unit options

Page 39

Digitrip - trip unitsPictures of variants

Digitrip 520 - Typ A / V Digitrip 520M - Typ U Digitrip 1150i - Typ P

Pictures: IZMX..A, V (Digitrip 520)Variants with options

V V with Earthfault protection G

A

Pictures: IZMX..U (Digitrip 520M)Variants with options

Pictures: IZMX.. U with ARMS (Digitrip 520M)

V with ARMS

V with ARMS and Earthfault protection G

Variants with options

V with ARMS and Earthfault alarm G

2. Overview trip units

top -> down

IZMX16 and IZMX40 circuit breaker Digitrip trip units

Sealable transparent frontcover:

Standard NEW

Sealing the mounting screw prevent removing the transparentfront cover. => settings can not be changed

For all trip units same function:


Reset-Button:

• indicates that the trip unit switched OFF (triped )the breaker

• Safety: Must be reset before the breaker can be switched ON after a fault.

• Optional:- Automatic RESET- Remote RESET (magn. Coil with different

voltages)

NEU

IZMX16 and IZMX40 circuit breaker Digitrip trip unitsFor all trip units same function:

Test socket: connecting test devices:•

IZM-TEST-KIT orIZM-SIM-KIT

Test devices for series IZMX and IZM26 aplicable.


Rating Plug• independent from internal current transformer exchangeable / easy plug in and safe by screw•

• Responsible for rated current of the IZM • Currents for In: 200A-4000A For all trip units as: • A - Distribution protection- V – Selective protection -

- U - Universal protection - P – Professional protection

NEU

In cases of field installation:The rated current of the rating plug has to be lower (or same) than the rated current of the breaker. (Safety: Coding of the white screw protect against wrong combinations)



Take into account:

All adjustments are based on the rated current In!

Differentiated trip indication

Indication of the trip cause with LED.Indication:

- Overload- Short circuit (delayed)- Short circuit (un-delayed)- Earthfault

With pushing of „Reste“ Button the LED-indication will be cleared.


NEW

oror

STATUS LED •Off - no power to the trip unit•On Green – no aux power and not at power up level•Flashing Green – Good, microprocessor is running•Red then Orange flashing – Trip actuator is not plugged in, •ROM or RAM error, calibration error, Making Current Release switch not indicating state correctly.

INST LED•Flashing Red - Instantaneous fault trip, Making Current •Release trip, Maintenance mode tripFlashing Orange – Rating plug bad or missing•

LONG LED•Flashing Red - Long Time trip•Flashing Orange – Over temperature trip•

SHORT LED•Flashing Red – Short Time trip•Flashing Orange – Improper Breaker Position indication•

GROUND LED•Flashing Red – Ground fault trip•

GROUND ALARM LED•Flashing Red – Ground fault pickup level exceeded•

HIGH LOAD ALARM LED•Flashing Red – Phase Current at 85% of Long Time Pick up •

For all trip units A, V, U same function:


Battery = Powered the LED for the trip cause request

Battery Test or Reset of the trip cause LED

LED for the Battery Test


For all trip units A,V, U same function

3. Setting of the protection parameters


Short circuit protection delayed (S)

all current settings

Short circuit protection un-delayed (I)

all time settings

Overload protection (L)

LED‘s for tripping cause

Digitrip trip units„overview“ – setting of the protection parameters

For all trip units A,V, U same function

time (t)

current (I)

L

S

I

100-500ms

2-24s

Ir=0,5-1 xIn

2-10 xIn

2-12 xIn und OFF

In=4000A

6xIrExample,Ir=0,5: 1xIr (=2000A) (=12000A)

Digitrip trip units„overview“ – setting of the protection parameters

Time Current Curves – Long and ShortT

IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

Current in multiples of Ir

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

Ir = LD x In

= 1.0 x 1000A

= 1000A

In = rated currentIr = Max Continuous Current Rating

4


IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000AIr = 0.9 x 1000A = 900A

3

4

20

1 106

Ir = 0.5 x 1000A = 500A

LD = 1.0

LDT = 4 s

SD = 4

SD = Flat

SDT = 0.3s

INST = Off

LD = 0.9

LDT = 4 s

SD = 4

SD = Flat

SDT = 0.3s

INST = Off

LD = 0.5

LDT = 4 s

SD = 4

SD = Flat

SDT = 0.3s

INST = Off

4


IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000AIr = 1.0 x 1600A = 1600A

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

LD = 1.0x

LDT = 10 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

4

1600A


IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000A

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

LD = 1.0x

LDT = 4 s

SD = 10x

SD = Flat

SDT = 0.3s

INST = Off

4


IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000A

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.5s

INST = Off

4


IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000A

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

4

LD = 1.0x

LDT = 4 s

SD = 4x

SD = I2t

SDT = 0.3s

INST = Off

Time Current Curves – InstantaneousT

IME

IN S

EC

ON

DS

10

2

10.90.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1


Ir = 1.0 x 1000A = 1000A

3

4

20

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.3s

INST = Off

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.5s

INST = Off

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.5s

INST = 10x

4

Can not show this on this curve!Long/Short curve is in multiples of IrInstantaneous is in multiples of In

Time Current Curves – InstantaneousT

IME

IN S

EC

ON

DS

1.0

0.2

0.10.090.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

Current in multiples of In

0.3

0.4

2.0

1 106

LD = 1.0x

LDT = 4 s

SD = 4x

SD = Flat

SDT = 0.5s

INST = 10x

4

0.5

Catalog Main optional trip unit functions

(G) Earth fault protection

(A) Earth fault alarm

(M) ARMS

(Z) ZSI (Zone selective interlocking)

4. Catalog Options

Catalog (G) Earth fault protection Power System Grounding

L1

L2L3

L1L2

L3

L3

L1

L2L3

L1

L2L3

L1L2

L3

L1

L2L3

L1L2

N

N

1. Source ground: Earth fault metering at the earthed Starpoint

2. TU adds the vectors (lengths and direction) of all currents.

Load

3 Phasen + Neutral Grit

4. Accidental ground

3. Zero Sequence metering

Ground Current Protection

Type 2. (3pole breaker)External current transformer for the N-conductor

External currrent transformer for IZMX40 (Article: IZMX-CT40-N)

External currrent transformer for IZMX16 (Article: IZMX-CT16-N)

Required:External Transformer – wired on auxiliary terminals no. 15 and 16

CT with copper termination

Type 1. Source ground orType 3. Zero Sequence metering

3. For IZMX16 only

1. For IZMX16 and IZMX40

Article: IZMX-EFS

Required:External current transformer – to be wired on the auxiliary terminals 17 and 18. and a jumper on Terminal 19 and 20.

Type 1. Source ground: Earth fault metering at the earthed Starpoint or3. Zero Sequence metering

Catalog (A) Earthfault - Alarm

An auxiliary contact close when an earth fault occur.

Comparable to earth fault protection – but without tripping.

Katalog (M) ARMS

ARMS = Arc Reduction M aintenance S ystem

Patent of EATON

without ARMS with ARMS

ARMSIn cases of an arc fault the tripping of the trip unit speeds up. The released energies are reduced as: Radiation, Temperature, Pressure, Forces of magnetic fields.

Additional protection in cases of maintanance


ARMS Arc Reduction Maintenance System

IZMX16 / IZMX40

ARMS can be enabled •manually at the trip unit orautomatically / remotely by a contact

before maintenance in the field beginsRemote: External contact on 33, 34

An LED die displays ARMS active or an external •signal lamp on terminal 11, 12.

ARMS is faster than the un-delayed short circuit •protection.

A control voltage of 24 VDC (+, -10%) at the •terminals 21, 22 is required.

Catalog (Z) ZSI = Zone Selectiv Interlocking

ZSI is described in the Technical Report •IEC/TR 61912-2 Low voltage switchgear and controlgear – Overcurrent protective devices – Part 2: Selectivity under overcurrent conditions.The term zone selective interlocking is used to •describe a method of controlling circuit breakers to provide selectivity with very short interruption times for the breaker closest to the fault.

Zone Selective Interlocking

There are different levels (zones) of protection •that isolate the fault in the distribution system.

ZSI may be applied for faults between phases •or earth-faults or both.

ZSI is applied to the short time faults where •time selectivity can be achieved with the breakers between the zones.

Each breaker should have a ZSI unit for •selectivity.

See next picture ->

Zone Selective Interlocking Example

3

2

1

ZSI

ZSIZSI

ZSI

ZSI

Zone 1

Zone 2

Zone 3

CB2

tsd =200ms

CB3

tsd = 200ms

CB5

tsd =100ms

CB4

tsd = 100ms

CB1

tsd = 300ms

M

5. Further information


Thermal Memory electronically simulates •the thermal condition of the electrical load to prevent overheating caused by repeated overload conditions.Thermal Memory function will cause faster •trip times in sequential testing of breaker poles!The electronic trip unit Thermal Memory •function replicates the bi-metal function of a mechanical trip unit.

Thermal Memory

Thermal Memory

Thermal Memory •Jumper on Digitrip 520 / 520M

Program setting on •Digitrip 1150

Thermal Memory

A, V, U- trip unit•Thermal Memory is active when the jumper is removed

P- trip unit •Program setting


Upgrade (exchange) of trip units in the field

The socket contains the „acknowledge“ of the breaker •IZMX16 and IZMX40:

Breakig capacity Icu / Ics•Rated short circuit withstand Icw, •max. rated current,•Max. making current•

…and belongs / remains in the breaker.

The socket informs the exchangeable trip unit •about this breaker data Unmistakeable exchange of trip unit and via coding •even for the rating plugToolless exchange (plug and work)•Socket contains the Battery, (storage of tripping •causes)Battery Test- and Reset-Button. -> The Intensity of the •Battery-LED informs about the Battery condition. Longer actuation resets the tripping cause information.

The trip units are now easier and saver exchangeable. Re-wiring of the important current transformers are no more risk.

Sockel

Rogowski-sensor

IZMX40 Sensor4000A

IZMX16 Sensor1600A

The advantage of the Rogowski-•sensors are the ferritless core. This results in no saturation an the CT can be uses in a wider range of current under linear and precise measuring. The CT has an additional coil to •provide the power supply for the trip unit.

– IZMX.. U with Display (Digitrip 520M)

Display:PH1, 2, 3 = current (A) of phases L1, 2, 3•PH4 = N – neutral-current•H5 = G – earthfault-current•HI = highest phase-current•OL = Current that let to the overload trip (first in first out)•

Scroll Button to display memory•

HL = Phase-currrent at 85% of overload setting (Ir).•HELP = trip unit not calibrated. •9999 = highest value to display = 4 digits. •

P-trip unit (Digitrip1150)

6. The new high end trip unit P (Professional)

NEW

„All known functions available and easy setting“

„easy adjustment for the needs and application at the trip unit….or with the communication bus function remotely“

With high definition , modular…

..color grafic display

P-trip unit (Digitrip1150)

P-trip unit (Digitrip 1150i)further technical information

New Hardware Platform — �

Digital Signal Processor – 120MHz (today �

4MHz)

A minimum of 64 samples per line for each line �

cycle on each phase for current and voltage

New analog sensing circuit focused on higher �

accuracy (testing in the laboratory so far is yielding < 2% on pick-up and trip times.)

Metering accuracy will be 1% of READING�

Color Graphic Display �

Voltage, line to neutral readings. �

Flexible communication design�

Value of Improved Metering CapabilityExample:

1% of full load (rated current) = +/- 40A

1% of READING = +/- 1A

Input of 100A

4000A Breaker

60A 140A

101A99A

Market Standard for Breakers

IZMX with P trip unit

100.1A99.9ARevenue Grade Metering (PMX)

Meter

Extra Wiring

CT’s

Special Bus Bar

Improved metering can reduce the use of using additional metering equipment and can reduce panel

assembly time

P-trip unit (Digitrip 1150i)Setting at front face

1.

1.

2.

2.

„All known functions available and easy setting“

P-trip unit (Digitrip 1150i)Setting at front face

„easy adjustment for the needs and application at the trip unit….or with the communication bus function remotely“

External power supply for P-trip unit

IZMX16 (NF)

One PT module supplies 16 breaker

Rate to 690Vac, •

One PT Module for 16 •breaker

Switches integrated, •

Compact housing, •

DIN rail mounting on back•

To be highlighted:

Relay Protection package •

User enable/disable with Time Delay•Adjustable under/over voltage release (trip or alarm)•

Adjustable under/over frequency release (trip or alarm)•

Voltage unbalance (trip or alarm) •

Reverse power (trip)•

Phase Rotation (alarm)•

Protective Relay Features

Digitrip 1150 Slope Selection

Slope •Selection

I2T•

Slope •Selection

I4T•

Digitrip 1150 Slope Selection

Slope Selection•I2T•

I4T•

IEC A (Normal Inverse)•

IEC B (Very Inverse)•

IEC C (Extremely Inverse)•

„Interfaces“

ModbusRTU

Slave•

PROFIBUS-DP

V0 Slave•

Ethernet

ModbusTCP i.V.•

SMTP Mail•

http(s) WebServer•

IZM

IZMX 16/40

MCAM

ECAM

PCAM

ICAMIncomBUS(USA)

Communication

IZMX Communication Modules

Flexible Communication Platform — �

Modbus RTU�

PROFIBUS DP�

Ethernet�

INCOM �

Module / address stays with cassette�

Communications “Open” and “Close” via �

module not through trip unit

+24 Volt DC control power�

Use with U- und P-trip units�

The Communication modul contains change over contacts for ON and OFF coils

Spring release SR and Ashunt trip ST in the breaker

Communications Open / Close via bus - Wiring

IZMX Communication module installation

IZMX16 and IZMX40 Switch disconnector (without trip unit)

Switch disconnector INX…

Without trip unit•

without internal current •transformer

With making current •release (MCR)

IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings,...

Documents

Transcript of IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings,...