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Product Specification

37167C

LS 4Circuit Breaker Control

& Protection

APPLICATIONS

The LS 4 offers a simple solution for complexswitchgear applications. The LS 4 has theability to operate with up to 14 GCP-31 gensetcontrols and 8 LS 4 circuit breaker controllers.

Each controlled breaker is equipped with oneLS 4 that measures the three-phase voltage oneither side of the breaker (phase angleconfigurable). Each side of the breaker isdesignated as either a fixed (utility) or variable(genset) source and is labeled A or B. Thispermits the LS 4 to control utility feederbreakers with one fixed source and onevariable source, or tie breakers betweenbusses with two variable sources. The LS 4 isused for breaker protection, synchronization,and load control.

OPERATION

All LS 4's communicate via a CAN bus networkto each other and to the GCP genset controls.Discrete input commands are used to operatethe LS 4 in the desired mode. Set-point valuesfor frequency and voltage are transmitted to allgenset controllers on that switchgear segment.The genset controls then adjust the frequencyand voltage of their respective genset toachieve synchronization. The LS 4 will performthe opening and closing of the circuit breakerbased on the discrete inputs it receives.

DESCRIPTION

Features True RMS voltage (A and B side)

True RMS current (A side)

Synch-check functionality

Dead bus start functionality

Synchronous networks functionality Remote control of frequency, voltage,

and real power

Zero power transfer control (softload)

Configurable trip/control set points

Config. delays for each alarm

7 configurable relay outputs

Two-line LC display

Synchronization over transformerpossible

Protections ANSI # Overvoltage (59)

Undervoltage (27) Overfrequency (81O)

Underfrequency (81U)

Phase/vector shift (78)

df/dt ROCOF (81RL)

Functions Calculation of setpoint values which

are transmitted to the genset controls(e.g. GCP) for synchronization andload control

Circuit breaker close command issuedwhen LS 4 is enabled and the two

sources are synchronized. Open command to the CB with a

discrete input command or with thedetection of one of the availableprotection functions.

Flexible solution focomplex breakerconfigurations

Synch-check relay

Dead bus startfunctions

Protection relay

Synchronizer

Zero power transfecontrol

CAN bus basedcommunication

Breaker protectionand synchronizer isingle digitalcontroller

True RMS sensing

Discrete inputs forremote control

PC and front paneconfigurable

Programmable relaoutputs

UL/cUL Listed

Microprocessor

technology foraccurate, repeataband reliableoperation

Programmable twostep threshold setpoints with individutime delays

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SPECIFICATIONS

Accuracy .......................................................................................... Class 1Power supply.............................................................24 Vdc (18 to 30 Vdc)Intrinsic consumption ..................................................................max. 12 WAmbient temperature................................................................ -20 to 70 CAmbient humidity...................................................... 95 %, non-condensing

Voltage ...........Rated value /: [1] 66/115 Vac or [4] 230/400 VacMaximum value (Vmax): [1] 150 Vac or [4] 300 Vac

Rated voltage Vph-ground: [1] 150 Vac or [4] 300 Vac

Rated surge voltage: [1] 2.5 kV or [4] 4.0 kVMeasuring frequency................................................50/60 Hz (40 to 70 Hz)Linear measuring range up to .......................................................1.3VratedInput resistance..................................................... [1] 0.21 M, [4] 0.7 MMax. power consumption per path................................................ < 0.15 WCurrent ........................................................................[1] ../1 A or [5] ../5 ALinear measuring range up to ........................................................ 3.0IratedLoad ............................................................................................. < 0.15 VARated short-time cur. (1 s) ................................[1] 50.0Irated, [5] 10.0IratedDiscrete inputs .............................................................................. isolatedInput range........................................................................18 to 250 Vac/dc

Input resistance.....................................................................approx. 68 k

Relay outputs ................................................................................ isolatedContact material...............................................................................AgCdOLoad (GP).................................................24 Vdc@2 Adc, 250 Vac@2 AacInductive time load (PD).......................................................24 Vdc@1 AdcInterface ......................................................................................... isolatedType .................................................................................... CAN bus (CAL)Insulation voltage ....................................................................min. 500 VdcHousing......................................................Type APRANORM DIN 43 700

Dimensions .........................................................................9672130 mmFront cutout.................................................................................9167 mmConnection................................................ screw/plug terminals depending

on connector 1.5 mm, 2.5 mm or 4 mmFront.................................................................................insulating surfaceProtection system................................................................................ IP 21Weight........................................ ....... depending on version, approx. 800 gDisturbance test (CE).................................................. tested according to

applicable EN guidelinesListings ......................................... UL/cUL listed (voltages up to 300 Vac)

ordinary locations, file E212970

DIMENSIONS

2004-11-17 | LS 4 Dimensions ls4ww-4704-ab.skf

50130

96

8

90

130

72

65

27

35

40

1

70 75

45

16

32 17

X5X1

Back view withconnecting terminals

Bottom view

DIN rail mount option

(please order bracktesP/N 8923-1023)

Front view

Configuration port

Configuration port

Configuration port

PRODUCT NUMBERS P/N

LS 4 version voltage input current input Product Number P/N

LS411B 100 Vac ../1 A 8440-1032LS415B 100 Vac ../5 A 8440-1031LS441B 400 Vac ../1 A 8440-1030LS445B 400 Vac ../5 A 8440-1006

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InternationalWoodwardPO Box 1519Fort Collins CO, USA80522-15191000 East Drake RoadFort Collins CO 80525Ph: +1 (970) 482-5811Fax: +1 (970) 498-3058

Europe

Woodward Governor CompanyLeonhard-Reglerbau GmbHHandwerkstrasse 2970565 Stuttgart, GermanyPh: +49 (0) 711 789 54-0Fax: +49 (0) 711 789 54-100

Distributors & ServiceWoodward has an internationalnetwork of distributors andservice facilities. For yournearest representative, call theFort Collins plant or see theWorldwide Directory on ourwebsite.

Corporate HeadquartersRockford IL, USAPh: +1 (815) 877-7441

www.woodward.com/power

Subject to technicalmodifications.

This document is distributed forinformational purposes only. It is notto be construed as creating orbecoming part of any WoodwardGovernor Company contractual orwarranty obligation unless expresslystated in a written sales contract.

We appreciate your commentsabout the content of ourpublications. Please send commentsincluding the document numberbelow [email protected]

Woodward GovernorCompany

All Rights Reserved

37167C - 06/4/S

WIRING DIAGRAM

Subject to technical modifications.

3/(4)

3/(4)

Relay 2

Relay 1

Relay 3

2005-11-23 | LS4 Wiring Diagramls4ww-4705-ap.s kf

The socket for the PC configuration is locatedon the side of the unit. This is where the directconfiguration cable DPC must be plugged in.

System

[B] LS4

(CircuitBreakerControl)

Disconnector

e.g. PLC

InterfaceCAN bus(Guidance Level)

CAN-L

CAN-H

GND

CAN-L

CAN-H

3/(4)

Sys

tem[A]

Relay 4

Relay 5

Relay 6

Relay 8Synchronization(impulse relay)

CAN-L

CAN-H

GND

CAN-L

CAN-H

LS4.1

7

CAN-L

CAN-H

GND

CAN-L

CAN-H

LS4.1

9

CAN-L

CAN-H

GND

CAN-L

CAN-H

LS4.x

GCP-31.x

GCP-31.1

GW4CAN-L

CAN-H

GND

CAN-L

CAN-H

CAN-L

CAN-H

GND

CAN-L

CAN-H

CAN-L

CAN-H

GND

CAN-L

CAN-H

R R

X5

X4

X3

X2

X1

29

Relay 7

28

27

26

25

24

23

22

21

20

19

16

15

14

13

12

11

10

9

CAN-L

CAN-H

GND

CAN-L

CAN-H

LS4.1

8

GCP-31.2

CAN-L

CAN-H

GND

CAN-L

CAN-H

44

45

73

74

75

30

31

32

70

71

72

5

6

7

8

43

42

41

40

4

3

2

1

Voltage - System [B] - L3



Blocking of watchdog funct. /remote acknowledgment

0 Vdc

Common

Enable CB

Reply: CB is open

Common

Reply: Isolation switch is open

Command: open CB

Current - System [A] - L1s2/x2 (l)

Current - System [A] - L2

Current - System [A] - L3

s1/x1 (k)

(Voltage - System [A] - N)

Voltage - System [A] - L1



Measuringvoltagethree-wire orfour-wire system

Batteryor

anotherpowersupply

Terminal3

0/73ispos.orneg.signal

#

CB

3/(4)

S1/X1 (K)

S2/X2 (L) s2/x2 (l)

s1/x1 (k)L1

3

#

24 Vdc

S1/X1 (K)

S2/X2 (L) s2/x2 (l)

s1/x1 (k)L2

S1/X1 (K)

S2/X2 (L) s2/x2 (l)

s1/x1 (k)L3

s1/x1 (k)

s2/x2 (l)

s1/x1 (k)

s2/x2 (l)

Formoreinfo

rmationcontact:

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