GE Multilin 565 Manuale utente

565/575

FEEDER MANAGEMENT RELAY®

Instruction Manual

SoftwareRev:E2.73

ManualP/N:1601-0017-E6

CANADA USA

215 Anderson Avenue, Markham, Ontario, L6E 1B3 9746 Whithorn Dr., Houston, Texas, 77095

Tel: (905) 294-6222 Fax: (905) 294-8512 Tel: (713) 855-1000 Fax: (713) 859-1091

TABLE OF CONTENTS

SECTION 1: INTRODUCTION

Protection Requirements of Feeders ......................... 1-1

565 Relay Features.................................................... 1-1

Setpoint Programming ............................................... 1-1

Inputs ......................................................................... 1-1

Outputs ...................................................................... 1-1

Memory Features ....................................................... 1-1

Typical Applications.................................................... 1-1

Ordering Information .................................................. 1-1

SECTION 2: INSTALLATION

Unpacking the Unit..................................................... 2-1

Mounting the Relay .................................................... 2-1

Making Wiring Connections ....................................... 2-1

Power Supply Connections........................................ 2-1

Surge Ground Connection ......................................... 2-1

Current Transformers ................................................. 2-1

Voltage Transformers ................................................. 2-1

Breaker Status and Control Connections .................. 2-4

Aux 1 Contacts........................................................... 2-4

Aux 2 Contacts........................................................... 2-4

Aux 3 Contacts........................................................... 2-4

Aux 4 Contacts........................................................... 2-4

Programming Port ...................................................... 2-4

Communication Port .................................................. 2-4

MTM Port ................................................................... 2-4

Printer Port ................................................................. 2-4

Analog Output Terminals............................................ 2-5

Analog In Terminals ................................................... 2-5

External Switches 1 to 8 ............................................ 2-5

Access Terminals ....................................................... 2-5

Remote Trip/Close Terminals ..................................... 2-5

Removal of Cradle ..................................................... 2-5

Inserting Cradle.......................................................... 2-5

Metering Transducer Module ..................................... 2-5

Hi-Pot Testing............................................................. 2-6

SECTION 3: PROTECTION APPLICATION INFORMATION

Overcurrent Protection............................................... 3-1

Use of Standard Curves............................................. 3-1

Use of Custom Curve................................................. 3-1

SECTION 4: DISPLAY AND KEYBOARD

Display Modes ........................................................... 4-1

Actual Values Mode ................................................... 4-1

Setpoints Mode .......................................................... 4-1

Help Mode.................................................................. 4-2

SECTION 5: ACTUAL VALUES MODE

Default Message Selection ........................................ 5-1

Actual Values Message Abbreviations. ...................... 5-1

Summary of Actual Value Page Contents .................. 5-2

Actual Values. ............................................................ 5-3

SECTION 6: SETPOINTS MODE

Relay Selection .......................................................... 6-1

Setpoint Message Abbreviations ............................... 6-1

Summary of Setpoint Page Contents. ....................... 6-3

Factory Default Setpoints. ......................................... 6-4

Setpoints. ................................................................... 6-8

Installation of Security Feature: ............................... 6-10

Use of Access Code:................................................ 6-10

SECTION 7: FEATURE INFORMATION

Event Recording Information ..................................... 7-1

AEG MODICON MODBUS PROTOCOL ................... 7-6

Memory Map Information ......................................... 7-11

Metering Specification - 565 with MTM.................... 7-23

SECTION 8: RELAY TESTING

Primary Injection Testing ............................................ 8-1

Secondary Injection Testing ....................................... 8-1

Phase Current Input Function Check......................... 8-1

Phase Instantaneous Pickup and Trip Check ............ 8-1

Phase Overcurrent Curve Verification........................ 8-1

Ground Current Input Function Check ....................... 8-3

Ground Instantaneous Pickup and Trip Check .......... 8-3

Ground Curve Verification.......................................... 8-3

Voltage Input Function Check .................................... 8-4

Undervoltage Trip and Alarm Check .......................... 8-4

Overvoltage Trip and Alarm Check ............................ 8-4

Output Relay Functional Check ................................. 8-4

Analog Input Function Check..................................... 8-4

Analog Output Function Check .................................. 8-4

Power Loss Check ..................................................... 8-4

SECTION 9: TECHNICAL SPECIFICATIONS

Technical Specifications............................................. 9-1

APPENDIX A

Customer service .......................................................A-1

APPENDIX B

Troubleshooting guide. ..............................................B-1

APPENDIX C

Block Diagrams ..........................................................C-1

APPENDIX D

Curve: Normal Inverse ..............................................D-2

LIST OF FIGURES

INTRODUCTION

1-1

Protection Requirements of Feeders

Protection of three phase feeders is necessary to avoid

equipment damage and personnel injury during fault condi-

tions. The fact that continuous reliable power must be pro-

vided to the distribution network means that the feeder pro-

tection relay must protect the network and personnel and yet

not cause unnecessary loss of power or nuisance tripping.

The ideal Feeder Management Relay should at least monitor

phase current, ground current and voltage in the network,

provideindicationsif any of thesereach predetermined levels

and provide appropriate trip signals if fault conditions de-

velop.

The advent of current microprocessor technology has ena-

bled the development of feeder management relays which do

this task much better than conventional relays and provide

other desirable features. Measured values of phase current,

ground current and voltage can be displayed.

Entering setpoints to the microprocessor based Relay is

made easier by use of a keypad and a LCD display to guide

the user. A “help” menu is available at all times.

Relay Features

The Multilin Feeder Management Relay is designed to pro-

vide complete and accurate feeder protection under all oper-

ating conditions.The relay provides complete Time/Overcur-

rent phase and ground protection by monitoring feeder phase

currents and ground currents.These are sensed by current

transformers (CT’s).

Overcurrent phase and ground current trip setpoints are

programmed by a comprehensive selection of industry stand-

ard curve shapes including moderately inverse, normal in-

verse, very inverse, and extremely inverse. In addition to the

pre-selected curves there is also a programmable custom

curve. If none of the pre-selected curves are suitable for the

application, the user can enter his own data to form the

custom curve.

Setpoint Programming

The relay can have its setpoints programmed locally, from the

front panel. In this case the alphanumeric display guides the

user through the setup, step by step, giving clear English

language instructions.There is also a HELP key which can be

pressed at any time to get information and assistance about

the current programming step.

The status of the system is clearly displayed at all times by

LED indicators and more detailed information can be shown

on the display screen if requested through the keypad.

When an output relay is activated to cause a trip/alarm the

Relay will display the cause of the trip/alarm.

All setpoints are tamper-proof.This is achieved through the

use of a combination of a Access wire jumper at the back of

the relay and personalized codes. These codes allow even

the wire jumper to be overridden, for added security.

Inputs

The Relay has inputs which can be used for indication of

breaker status or external differential trips such as the indus-

try standard ’87T’.

One set of inputs is designated “Analog Select”, and can be

connected to four dry contacts of a programmable logic

controller (PLC). Selected outputs can be requested one by

one, through these inputs by the PLC. Information can be

requested on values such as individual phase currents and

the Relay will send the requested value through the analog

output terminals in either 0-1mA or 4-20mA format as re-

quired.

Outputs

Six electromechanical output relays are included in the 565/

575 Relay.These are named Trip, Close, Aux. 1, 2, 3, and 4.

These relays can be allocated various functions, by using the

flexibility of the software programming.

Actual value and Setpoint information is sent out through the

RS485 port on the rear of the relay.

** An RS232 printer driver

port is also available for printing out events from the event

recorder if an Option Card is installed. **

In addition, a front

panel RS232 programming port is provided.

Memory Features

In order to simplify fault analysis and thus improve system

reliability, several memory features have been built into the

Relay. The event recording feature provides a record of the

events leading to a trip so that the faulty feeder system

component can be located easily.

The memory feature provides a record of the cause of all

trips.This is extremely useful in determining preventive main-

tenance requirements and identifying problem areas.

Typical Applications

The Relay is ideally suited for primary protection of medium

and high voltage distribution systems.

INTRODUCTION

1-2

Ordering Information

To order the Feeder Protection Relays you must specify it as

shown in Figure 1.1.

Many features of the Relay are field programmable. Those

Figure 1.1 Order Codes

listed in Figure 1.1 are not, and must be specified when

ordering.

Additional features may be available for special orders. Con-

tact GE MULTILIN for further details.

INSTALLATION

2-1

Unpacking the Unit

The shipping container should contain your Relay and this

manual. Inspect the unit and inform GE MULTILIN of any

damage.If re-shipment is required the original container and

packing should be used.

Mounting the Relay

The Relay is designed to be panel mounted. It should be

located so that the keypad is accessible with the door

opening from the right. The unit should be mounted so that

the display is easily visible. It is recommended that the relay

be mounted as far away as possible from heavy current

sources and strong magnetic fields.

The 4 mounting studs of the Relay are equipped with (1) #10

internal star lockwasher, (1) 10-32 threaded hex spacer

0.25" long, (1) #10 split lockwasher, and (1) 10-32 hex nut.

Remove only the split lockwasher and the 10-32 hex nut

before installing the Relay in the panel. Then use this split

lockwasher and hex nut to secure the Relay in the panel.

The dimensions of the unit and the necessary cutout dimen-

sions are shown in Figure 2.1.

To reduce the required space behind the mounting panel an

optional depth reducer is available.This reduces the depth to

6.25". It increases the width of the front panel to 15.33". For

mounting dimensions see Fig. 2.2.

Making Wiring Connections

All wiring connections to the Relay are made at the back of

the unit as shown in Figure 2.10. All terminals are also

identified in Table 2-1 with their functions.

Figure 2.5 shows the connections for a typical installation.

The actual connections made to the Relay will vary according

to the application. All contacts in the figure are shown in the

state they will have with control power applied to the unit.The

contacts are shown in the “non-active” state.

The relay can be removed from the outside case for the

purpose of checking and/or calibration. The wiring is to the

outside and remains intact.

WARNING

Extreme caution must be exercised when the chassis is

withdrawn from an in service unit as this exposes live

terminals.

Power Supply Connections

Depending upon the ordered power supply, the Relay is

designed to operate within one of the following voltage

ranges:

1. 90-260 VAC and 95-280 VDC

2. 20-60 VDC

No internal or external adjustments are required to use any

of the above supply voltages.

Power supply connections are made at terminals 63 and 64.

The relay is grounded by connecting terminal 62 directly to

the dedicated ground entering the switchgear enclosure.

Surge Ground Connection

For safety and optimum noise immunity due to transients, a

low impedance connection must be made between the surge

ground terminal and the switchgear ground. This must be a

separate, dedicated wire tied directly to the switchgear cop-

per bus strip (flat, braided wire is ideal).

CAUTION

FAILURE TO MAKE PROPER GROUND CONNECTIONS

MAY CAUSE DAMAGE TO THE RELAY.

Current Transformers

The three current transformers supply the Relay with cur-

rents proportional to the current in each of the phases of the

feeder being protected. They are connected to terminals 49

to 54 as shown in Figure 2.5.Observe correct polarity when

connecting the current transformers to the unit.

The CT terminal with the dot marked on it must be connected

to the terminal marked “:5/:1”. Each CT should have the

same physical orientation, with polarity connected as shown

in Figure 2.5.The sides of the CT which are not marked with

a polarity dot are connected together and grounded.

Residual ground sensing is provided by connecting the com-

mon terminals of the three CTs together through the ground

sensing input terminal 56 as shown in the wiring diagram,

Figure 2.5. These connections allow the relay to check the

vector sum of all three phase currents. If this is not zero, a

ground fault condition is sensed by the unit.

For typical CT wiring of the Relay with the optional Metering

Transducer Module (MTM) see Figure 2.7A and Figure 2.7B.

Voltage Transformers

Separate voltage transformers are needed for voltage sens-

ing and terminals 35 to 38 are used for this.The transformers

can be connected in either Wye or Open Delta configuration

as shown in Figure 2.6.

INSTALLATION

2-2

Figure 2.1 Mounting Details

INSTALLATION

2-3

Figure 2.2 Mounting Arrangement with Relay Collar

INSTALLATION

2-4

Breaker Status and Control Connections

The Feeder breaker status indications are given to the Relay

from the auxiliary 52a/52b contacts on the breaker. The

connections are made to terminals 9 and 10 for the Breaker

open indication (52b) and at terminals 11 and 10, for breaker

closed (52a) as shown in Figure 2.5.The breaker status input

connections must be made.

Aux 1 Contacts

The contacts of the Aux 1 are 43 N.O., 59 common, 46 N.C.

This relay function is programmable.

Aux 2 Contacts

The contacts of Aux 2 are 44 N.O., 60 common, 47 N.C.This

relay function is programmable.

Aux 3 Contacts

The contacts of Aux 3 are 45 N.C., 61 common, 48 N.O.This

relay is hot coil failsafe and monitors control power loss, and

trip coil supervision. It is not programmable.

Aux 4 Contacts

The contacts of Aux 4 are 30 N.O., 31 common, 32 N.C.This

relay activates on a Breaker Discrepancy function if enabled.

** Available only with Option Card **.

Block Tap Changer (

575 only

)

The contacts of the Block Tap Changer are 16 N.O., 15

common, and 26 N.C.This relay operates to block operation

of an external transformer tap changer. It also acts as “Auto

Reclosure in Progress” indicator.

Programming Port

A programming port (RS232 type) is supplied on the front

panel of the relay. This port can be connected to a computer

which then can be used to store setpoints in and read

measured values from the relay.

This port has priority over the communication port on the

rear. If the relay senses the DTR line being pulled high, all

communications at the rear are suspended.

The connection to a computer is made via a standard

modem type cable and is shown in figure 2.3.

Communication Port

Up to 32 relays can be daisy-chained together and con-

nected to a computer or a programmable controller using the

RS485 type communication port in the rear. A shielded

twisted pair should be used and proper polarity has to be

observed. ie.positive to terminal 65, negative to terminal 66,

while the shield is connected to terminal 67.

After each 565/575 Relay is assigned a unique address, the

master device (computer) can read measured values or

store setpoints. The address is assigned via the keypad on

the front panel. See also Programming Port information

above.

MTM Port

The MTM port, terminals 67, 68, and 69, is required when

connecting the separate MTM Metering Transducer Module

to the 565/575 Relay.The MTM receives current and voltage

inputs and calculates KW, KVAR, PF and transmits the

information to the 565/575 Relay.The connections are made

by means of a shielded twisted pair of length no greater than

50 ft. MTM port polarity must be observed.ie. positive to 68,

negative to 69, and the shield to 67.

** Available only with

Option Card **.

Printer Port

The printer port can be used to connect a printer to record

event recording output.This is a 1200 baud serial output with

even parity and requires the printer to accept serial data.The

word length is eleven bits with the data frame constructed as

follows: there is a start bit

(Low)

, eight data bits

(LSB to

MSB),

an even parity bit, and a stop bit

(High).

The connec-

tion is made at the rear of the relay via a 9 pin D-type null

modem connector. The pinout is as follows:

Figure 2.3 Computer Interface Cable for RelayCom

Package

INSTALLATION

2-5

2 = transmit data to printer

3 = receive data from printer

4 = Clear To Send from printer

5 = signal ground.

Seeyourprinter manualforconnectionsattheprinter.

** Avail-

able only with the Option Card installed **

Analog Output Terminals

Terminals 17 and 18 provide a single output that can be

programmed as 4-20 mA or 0-1 mA to correspond from zero

to full scale.

Using the analog select terminals 19-22, and 71, outputs can

be selected by placing a binary code on inputs A-D.This code

can be PLC controlled for changing the output selection.This

allows monitoring and plotting measured values such as

phase current, using a single analog input channel of a

programmable controller.

If a single output parameter is desired, this is achieved through

setpoint programming without external connections to inputs A-D.

Analog In Terminals

The 565/575 Relay is designed to accept an input from

standard 4 to 20 mA source such as a MultilinTS3 Tempera-

ture Monitor. This input can be used to provide status or trip

signals related to the level of the input, a transformer winding

temperature, for example. The setup of the trip, alarm or

status indications are done during the software programming

in the Setpoints mode.

The input terminals are positive 24, and negative 23.

External Switches 1 to 8

The 565/575 Relay can accept switch inputs from eight

external switches, through terminals 1 to 8. The function of

switches 1 to 8 is user definable.They can be programmed to

perform functions such as preventing certain feeder breaker

trips or introducing a time delayed alarm.These features are

assigned to the switches in the Configuration page of Set-

points mode.

CAUTION

External Switch inputs should be connected to dry circuits

only to prevent damage to the relay.

No external voltage should be applied to these terminals as

the contacts are energized internally from the 565/575 and

opto-coupled to the sensing circuitry. Switches should be

isolated from each other for correct operation.The maximum

input impedance to these external switches is 2 kΩ.

AccessTerminals

Terminals 33 and 34 can be connected to a keyswitch.The

565/575 Relay setpoints cannot be changed unless this

keyswitch is closed (ie. 33 and 34 are connected together).

This prevents unauthorized personnel from tampering with

the setpoints once they are set up. This function can be

defeated using the Security feature. Refer to Setpoint Pro-

gramming.

RemoteTrip/Close Terminals

When terminals 39 and 40 are “open”, the 565/575 relay is

operating in Local Mode. If this is the case, terminals 26, 27,

and 28 will have no effect upon either the Close (terminals 42

and 58) or Trip (terminals 25, 57, and 41) output relays.

When terminals 39 and 40 are “closed”, the 565/575 relay is

operating in Remote Mode. Now if terminals 27 and 28 are

shorted, the Close output relay becomes energized and if

terminals 26 and 27 are shorted, the Trip output relay be-

comes energized. Note that each relay will be picked up for

as long as the appropriate switch input remains closed.

This operation is completely independent of software and is

strictly under hardware control.

Removal of Cradle

To remove the cradle from the case, open the door and

unscrew the locking screw fasteners.The cradle can now be

removed simply by pulling on the front handle. Caution

should be taken when the cradle is removed as this exposes

live terminals in the case.

Inserting Cradle

To insert the cradle, align the aluminum guides on the sides

of the cradle with those inside the case and slide the cradle

into place. Ease in with constant pressure. Once inserted,

the yellow guideline should be visible. The locking screw

fasteners can now be screwed in and tightened. NOTE: The

locking screw fasteners should be locked at all times while

the cradle is inserted to ensure that proper connection to the

rear terminals is maintained.

CAUTION

Do not press on the LCD display when removing or install-

ing the unit.

INSTALLATION

2-6

Metering Transducer Module

The Metering Transducer Module is an optional unit which

gives the 565/575 additional functionality. The mounting ar-

rangement is shown in Figure 2.9 and the typical wiring for

PT’s and CT’s is shown in Figure 2.7A and Figure 2.7B.

Additional analog outputs can be wired as shown in Figure

2.8A and Figure 2.8B.

Hi-Pot Testing

The Relay has been tested at the factory for 1 second at

1800 VAC in order to verify its dielectric strength. Hi-pot

testing to verify the wiring into the gearmust be done with the

inner relay cradle removed from the outer case. JMP1 must

be removed before Hi-pot testing.This jumper can be located

by viewing Figure 2.4.

Hi-pot testing should only be performed on the terminals

mentioned in the enclosed table of this addendum. With

these points in mind, here are the necessary steps for Hi-

potting a 565/575 Relay when wired into the gear.

Figure 2.4 Removal of Hi-Pot Screw

1. Remove the 565/575 Relay inner chassis from the outer

case. Failure to remove the relay from the outer case can

cause failure of the relay.

2. Remove jumper JMP1 from the outer case’s rear

motherboard. Please see Figure 2.4 for this jumper’s

location.

3. Hi-pot the following terminals with respect to surge ground

for 1 second at 1800 VAC:

#16

#29, #30, #31, #32

#42, #43, #44, #45, #46, #47, #48

#58, #59, #60, #61, #62, #63, #64

4. Ensure that jumper JMP1 is properly inserted after Hi-pot.

This should be on the two right most pins of the group of

three pins. If not, the unit will not be properly grounded.

5. Install the relay’s inner chassis into the outer case.

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