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Feeder Protection REF601

Technical Presentation

ABB LtdDistribution Automation

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IntroductionIntroduction

Feeder Protection REF601

Application examplesApplication examples

Hardware and optionsHardware and options

FunctionalityFunctionality

Mechanical designMechanical design

Front panel HMIFront panel HMI

ConclusionsConclusions

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Introduction

IntroductionINSERT PICTURE

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Feeder Protection REF601

REF601 is a numerical feeder protection relay, designed for the protection and control of utility and industrial power systems, in primary and secondary distribution network

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Feeder Protection REF601

Designed for over-currentand earth-fault protection

Main application area: Cables, Lines or transformer feedersin solidly earthed, resistance earthed or isolated distribution networks

Brings the advantages of Rogowski coil current sensors to medium-voltage applications

The relay for integrated offering of VD4/ HD4 circuit breakers with protection and sensors

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Application

examples

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REF601 in directly earthed network

Main protection: 3I>, I0>

Necessary curves for primary / secondary distribution

IEC NI, VI, EI, LI

Special RI

Dual mode of earth current measurement

Internal calculationExternal CBCT input

Protection blocking by second harmonic measurement for stability during magnetizing inrush of transformers

REF601 applied for a feeder in an solidly earthed distribution network

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REF601 in isolated network

REF601 applied for a feeder in an resistance earthed or isolated distribution network

Main protection: 3I>, I0>

Necessary curves for primary / secondary distribution

IEC NI, VI, EI, LI

Special RI

Dual mode of earth current measurement

Internal calculation

External CBCT input

Protection blocking by second harmonic measurement for stability during magnetizing inrush of transformers

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Hardware

and options

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REF601 Hardware

Power supply Wide range 24 - 240 V DC / AC

Analogue inputs3 Sensor inputs for phase

1 CT input for E/F

Binary input / output4 binary inputs

6 binary outputs

Communication (optional)MODBUS RTU on RS485

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REF601 Analog InputThree phase sensor inputs with rated transformation ratio :

150mV/250A for 50Hz

180mV/250A for 60Hz

Note : These inputs are not compatible with conventional 1 A / 5 A CT’s.

Four selectable nominal primary current values- 40/80/250/1250A

Programmable sensor calibration factor for higher over-all accuracy

One earth current input (I0) suitable for conventional 1 A core balance CT

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REF601 Binary input

Four galvanically isolated binary input for

Remote trip

Remote reset

Remote close

Remote open

Wide operative voltage range (24 – 240 V AC/DC) for binary input

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REF601 Binary output Two trip outputs

Trip 1 : Normally closed output which opens for 200ms for tripping CB

Trip 2 / Breaker Open : Normally open output which closes for 200 ms for tripping CB

One Breaker close contact

Two signal outputsPhase over-current trip

Earth over-current trip

One Unit ready / IRF contact

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REF601 Power supply

Universal input power supply with 24 – 240V AC / DC range

-30% to +20% tolerance for DC

-15% to +10% tolerance for AC

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Functionality

Functionality

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REF601 Protection functions

503I>>>Non Directional Over-current, High set ( DMT or Inst. )

683I2f>3-phase Transformer Inrush detector50N/51NI0>>Non Directional Earth-fault, High-set ( DMT or Inst. )51NI0>Non Directional Earth-fault, Low-set, ( DMT or IDMT )

50/513I>>Non Directional Over-current, High set ( DMT or Inst. )

513I>Non Directional Over-current , Low set ( DMT or IDMT )ANSIIEC 60617Protection functions

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REF601 Breaker Control

Dedicated push - buttons for local breaker control

Dedicated binary Inputs for remote breaker control

Optimum duty outputs for breaker control

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REF601 MeasurementsRMS value of fundamental component

Default displayMost loaded Phase - Amps

Earth current - % nominal

Selectable displayPhase currents - Amps

Earth current - % nominal

ORPhase currents - % nominal

Earth current - % nominal

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REF601 Recorded dataCurrent values for I1, I2, I3 and I0 are recorded for two trip events

Record length of 15 samples @ one sample/cycle

5 samples pre-trip and 10 samples post-trip

Trip counterPhase trip and Earth trip counters –cannot be reset

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REF601 EventsLast five events

Events triggered by protection trip, Relay fault, 4xBI

Event log containsAnalog values of I1, I2, I3 and I04xBI status , 4xBO status, Unit Ready

status and fault code

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REF601 SafetyContinuous monitoring of

Memory circuits (RAM, ROM, EEPROM)

Internal supply voltages

Hardware and software configuration

Indication by Ready LED

Protection blocking on critical internal relay failure to avoid unwanted trip

Non-volatile memory for setting values and fault recorded information

Operation indications and LED’s showing status at the fault

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REF601 Access Control and traceability

Role based access control

Three level accessOperator

Setting

Admin

Administrator programmable password

Version informationProduct type, Software version

Model name

Nominal primary current

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REF601 Test functions

Hardware testLCD test

Keyboard test

LED test

BI test

BO test

Serial EEPROM

Trip output test

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CommunicationINSERT PICTURE

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REF601 Communication option

Communication on MODBUS RTU protocol

RS 485 port for communication

Selectable data transfer rates 2400 … 38400 baud

RS 485 Serial Bus

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Mechanical

design

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REF601 Mechanical Dimensions

Compact dimensions for new and retrofit installations

Height : 160 mm

Width : 130 mm

Depth : 101 mm

Weight : 1,2 Kg

Ingress protectionIP 42 on front when panel mounted

IP 20 on Top, Side, Bottom, Rear

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REF601 Mechanical Dimensions

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REF601 Circuit Breaker Mounting

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REF601 Panel Mounting

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Front panel HMI

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REF601 Front panel HMI

Navigation buttons

ESC button

CB Control buttons

2 x 16 characterLCD Display

Phase fault and Earth Fault Indications

Three dedicated LEDs: Ready, Start,Trip

Enter button

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ConclusionsINSERT PICTURE

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REF601 Product summarySensor input for phase currentExternal CBCT input for earth currentInternal calculation of earth currentThree-stage overcurrent protectionTwo-stage earth-fault protectionMagnetizing inrush detectionControl of circuit breakerLocal and remote controlFive event logsTwo fault records of analogue valueNon-resettable trip counterOn-line measurementsComprehensive local HMIUniversal auxiliary supply ratingCircuit breaker or panel mountingOptional Modbus communicationNon-volatile memoryAccess controlSelf-supervisionBuilt-in test funcionality

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REF601 Selection and ordering data

FFeeder protection with control

Series identity3

2

1

Sr. No.

60_ series

Main applicationRE_ series relayBrand identity

RE

601

Description

R E F 6 0 1 B A A 4 6 A A 1 X A

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REF601 Selection and ordering data

644 BI + 6 BOBinary Input / Output

AA3 sensor and ground CT

6

5

4

Sr. No.

Analog Input / OutputIECStandard

B

Description

R E F 6 0 1 B A A 4 6 A A 1 X A

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REF601 Selection and ordering data

Serial communicationAWith RS 485

124 – 240V AC / DCPower supply

AModbus RTUNNone

9

8

7

Sr. No.

Communication protocolNone N

Description

R E F 6 0 1 B A A 4 6 A A 1 X A

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REF601 Selection and ordering data

Vacant digitXVacant

AVersion 1.011

10

Sr. No.

Version

Description

R E F 6 0 1 B A A 4 6 A A 1 X A

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Please visit ourwebsite for the latest product information

www.abb.com/substationautomation

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