ABB REF601 CEI Parts list manual

User’s manual and Technical description
Feeder Protection Relay
REF601 CEI

Document ID: 1MDU07205-YN
Issued: 30.09.2010
Revision:F
Product version:1.0 SP1
Copyright 2009 – ABB. All rights reserved

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Copyright
This document and parts thereof must not be reproduced or copied without
written permission from ABB and the contents thereof must not be imparted to
a third party, nor used for any unauthorized purpose. The software or hardware
described in this document is furnished under a license and may be used, cop-
ied, or disclosed only in accordance with the terms of such license.
Trademarks
ABB is a registered trademark of ABB Group. All other brand or product names
mentioned in this document may be trademarks or registered trademarks of their
respective holders.
Guarantee
Please inquire about the terms of guarantee from your nearest ABB representa-
tive.
ABB Ltd.
Distribution Automation
Maneja Works,
Vadodara - 390 013, India
Phone [phone]
Fax [phone]
www.abb.com/substationautomation

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Disclaimer
The data, examples and diagrams in this manual are included solely for the concept
or product description and are not to be deemed as a statement of guaranteed prop-
erties. All persons responsible for applying the equipment addressed in this manual
must satisfy themselves that each intended application is suitable and acceptable,
including that any applicable safety or other operational requirements are complied
with. In particular, any risks in applications where a system failure and/or product
failure would create a risk for harm to property or persons (including but not limited
to personal injuries or death) shall be the sole responsibility of the person or entity
applying the equipment, and those so responsible are hereby requested to ensure
that all measures are taken to exclude or mitigate such risks. This document has
been carefully checked by ABB but deviations cannot be completely ruled out. In
case any errors are detected, the reader is kindly requested to notify the manufac-
turer. Other than under explicit contractual commitments, in no event shall ABB be
responsible or liable for any loss or damage resulting from the use of this manual or
the application of the equipment.

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Conformity
This product complies with the directive of the Council of the European Communities
on the approximation of the laws of the Member States relating to electromagnetic
compatibility (EMC Council Directive 2004/108/EC) and concerning electrical equip-
ment for use within specified voltage limits (Low-voltage directive 2006/95/ EC). This
conformity is the result of a test conducted by ABB in accordance with Article 10 of
the directive in agreement with the product standards EN 50263 and EN 60255-26
for the EMC directive, and with the product standards EN 60255-6 and EN 60255-27
for the low voltage directive. The IED is designed in accordance with the international
standards of the IEC 60255 series.

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Table of contents
Table of contents
Introduction…………………………………...………9
This manual.........……………………..………………………...9
Intended audience.………………………………..……………9
Document Revison History...…………………………………..9
Document symbol & conventions..………………………….10
REF601 CEI overview.......…………………...……11
Overview............………….………………………..…………...11
Product version history….……………………………..………12
Operational functionality...……………………………………..12
Basic Functions...........................……………….…………….12
Power supply..................………………………….……………15
Technical data ...……………………………...……17
Dimensions..…….………………….…………………………..17
Power supply......……....……………………………..……… 17
Energizing inputs……....……………………………..……… 17
Binary input………………………….……………………...…..18
Output....................................……………….………………..18
Protection Functions.…..……………………………..……….19
Degree of protection..……...……………………..………...…20
Environmental tests and conditions….………………………21
Mechanical tests……………………………………………….22
Insulation and mechanical tests………………….…………..22
Electromagnetic compatibility tests………………………….22
Section 1
Section 2
Section 3

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Table of contents
Protection Functions............………....……...…25
Three Phase Current Protection....……...……………..……25
Earth Fault Protection………………………..…………….…25
Three Phase In Rush Detector.........………..…………….…26
Output & Inputs..........................................…………..….…27
Breaker control & Trip Command Operation.......……….…27
Signal Diagram.......................................…………….…..…30
Protection characteristics.................................……………32
Menu structures & LHMI navigation…….......34
Local HMI....…………...…………………..……………..……34
Navigation..…………………………..………….………….…36
Main Menu............……...…………..………..…………….…37
Authorization....…………………….………………………….38
Measurement......................................................…..…..….39
Recorded data.....................................................………….40
Events................................................................…..……....41
Settings..............................................................................43
Configuration......................................................................47
Test.....................................................................................51
Test - Calibration................................................................52
Functional Test...................................................................61
Access Level.....................................................…..……....63
Version info.........................................................................64
Section 4
Section 5

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Table of contents
Installation………..…….....………...……………65
Unpacking and inspecting the device..…………….....……65
Storage...................…..……………..………….………….…65
Checking environmental conditions and mounting space..66
Mounting the relay………………………………………….…66
Relay Wiring..............………………..….………………….…67
Relay mounting dimension..………..….………………….…67
Relay connection digram....................................................69
Bonding of sensor cable shield...........................................70
Relay ordering information...................……………......……73
Section 6
Serial communication.....................……………74
Modbus protocol overview...................……………......……74
Wiring......................…..……………..………….………….…74
Modbus RTU message format............................................75
Modbus RTU function codes..…………………………….…77
Exception response..………………..….………………….…84
Serial communication parameters....….………………….…87
Communication troubleshooting.........................................95
Section 7

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Introduction
Section 1 Introduction
1.1 This manual
This manual contains application and functionality descriptions and connection
diagrams, input and output signals, setting parameters and technical data. The
manual can be used as a technical reference during the engineering phase,
installation and commissioning phase, and during normal service. The manual
can also be used when calculating settings. Instructions on how to operate the IED
during normal service once it has been commissioned and it can be used to find
out how to handle disturbances or how to view calculated and measured network
data in order to determine the cause of a fault
1.2 Intended Audience
This manual addresses system engineers, installation and commissioning person-
nel, who use technical data during engineering, installation and commissioning, and
in normal service. system engineer must have a thorough knowledge of protection
systems, protection equipment, protection functions and the configured functional
logics in the IEDs. The installation and commissioning personnel must have a basic
knowledge in handling electronic equipment.
This manual addresses Protection and control engineer responsible for planning, pre-
engineering and engineering. The protection and control engineer must be experienced
in electrical power engineering and have knowledge of related technology, such as
communication and protocols.
The manual also addresses the operator, who operates the IED on a daily basis. The
operator must be trained in and have a basic knowledge of how to operate protection
equipment. The manual contains terms and expressions commonly used to describe
this kind of equipment.
1.3 Document Revision History
Document version Release date Document history
A 17.03.2009 Document released
B 17.04.2009 Document released
C 21.04.2009 Document released
D 25.05.2009 Document released
E 07.08.2009 Document released
F 30.09.2010 Document released

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1.4 Document Symbol and Conventions
Dangerous voltages can occur on the connectors, even though the
auxiliary voltage has been disconnected.
National and local electrical safety regulations must always be
followed.
The device contains components which are sensitive to Electrostatic
discharge. Unnecessary touching of electronic components must
therefore be avoided.
Only a competent electrician is allowed to carry out the electrical
installation.
Non-observance can result in death, personal injury or substantial
property damage
Breaking the sealing tape on the upper handle of the device will result in
loss of warranty and proper operation will no longer be guaranteed.
When the plug-in unit has been detached from the case, do not touch
the inside of the case. The relay case internals may contain high
voltage potential and touching these may cause personal injury.
Introduction
1.4.1 Safety information
This publication includes the following icons that point out safety-related conditions
or other important information:
1.4.2 Functions,codes & Symbols
Protection IEC code ANSI code
Three-phase non-directional overcurrent, low-set
stage
3I> 51
Three-phase non-directional overcurrent, high-set
stage
3I>> 50 / 51
Three-phase non-directional overcurrent, very high-
set stage
3I>>> 50 / 51
Non-directional earth-fault, low-set stage Io> 51N
Non-directional earth-fault, high-set stage Io>> 50N/51N
Three phase transformer inrush detector 3I2f> 68

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Section 2 REF601 CEI overview
2.1 Overview
REF601 CEI overview
REF601 is a dedicated feeder protection relay, intended for the protection, measure-
ment and supervision of utility substations and industrial power systems. Engineered
from the ground up, the relay is inspired by and is compatible with the Rogowski coil
sensor for current measurement. The new feeder protection relay is designed to un-
leash the advantages of current sensors for protection and control in medium voltage
applications.
The REF601 features compact size and ease of use. The features include:
. Sensor input for phase current
. External CBCT input for earth current
. Three-stage overcurrent protection
. Two-stage earth-fault protection
. Magnetizing inrush detection
. Control of circuit breaker
. Local and remote control
. Five event logs
. Two fault records of analogue value
. Non-resettable trip counter
. On-line measurements
. Comprehensive local HMI
. Universal auxiliary supply rating
. Circuit breaker or panel mounting
. Optional Modbus communication
. Non-volatile memory
. Access control
. Self-supervision
. Built-in test functionality

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2.2 Product version history
Product version Release date Product history
1.0 20.03.2009 Product released
1.0 SP1 21.08.2009 Service Pack released
2.3 Operational Functionality
2.4 Basic Functions
REF601 CEI overview
2.3.1 S 2.3.1Standard configuration
Standard configuration
The IED is available with one standard configuration. The table indicates
the functions supported by the IED
2.3.2 on
Optional Function
• Modbus RTU
2.4.1 Self Supervision
The IED is provided with an extensive self-supervision system which continuously
supervises the software and the electronics. It handles run-time fault situations and
informs the user about an existing fault via the LHMI and the communication.
When in an IED internal fault is detected, the green Ready LED ceases to glow and the
self-supervision output contact is activated. Internal fault indications have the highest
priority on the LHMI. None of the other LHMI indications can override the internal fault
indication. An indication about the fault is also shown as a message on the LHMI. The
text IRF with an additional text message, a code is shown to indicate the fault type.
The user can try to eliminate the fault by restarting the IED. If the fault is still found, the
IED stays in internal fault mode. All other output contacts are released and locked for the
internal fault. The IED continues to perform internal tests during the fault situation.
Protection IEC code ANSI code
Three-phase non-directional overcurrent, low-set
stage
3I> 51
Three-phase non-directional overcurrent, high-set
stage
3I>> 50 / 51
Three-phase non-directional overcurrent, very high-
set stage
3I>>> 50 / 51
Non-directional earth-fault, low-set stage Io> 51N
Non-directional earth-fault, high-set stage Io>> 50N/51N
Three phase transformer inrush detector 3I2f> 68

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REF601 CEI overview
If an internal fault disappears, the green Ready LED starts glowing and the IED
returns to the normal service state. The fault indication message remains on the
LCD until manually cleared.
The self-supervision signal output operates on the closed circuit principle. Under
normal conditions the relay is energized and the contact gap 5-6 in connector XK2 is
closed. If the auxiliary power supply fail or an internal fault is detected, the contact
gap 5-6 is opened.
Fig. 1 – Output Contact
5
6
Unit
Ready
5
6
Ready
Condition IRF Condition

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The internal fault code indicates the type of internal IED fault. When a fault appears,
document the code and state it when ordering the service.
Fig. 2 – Internal fault indication and codes
REF601 overview
Flash Memory Fault
Power ON RAM
check fault
Power ON EEPROM
check fault
Internal supply
voltage check
Gain check fault
Runtime RAM check
fault
I R F 0 0 1
I R F 0 0 2
I R F 0 0 4
I R F 0 0 8
I R F 0 1 6
I R F 0 3 2
I R F 0 6 4
Runtime EEPROM
check fault

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2.4.2 Recorded data & Trip counter
The relay stores records of analog values for two trip events in non-volatile memory.
The fault recording is triggered by the trip signal of protection function. A sample of
analog value is recorded for every power frequency cycle. Fifteen such samples are
recorded, five before the trip and ten after the trip event. These records enable the
user to analyze the two most recent power system events. Each record includes the
current values for three phases and earth current. The oldest recording is lost when
a new fault recording is made.
The relay records the number of phase and earth fault trip events into dedicated trip
counters. These trip counters can not be reset by the user and are stored in non-
volatile memory. The recorded information is store in non-volatile memory and can be
accessed locally via the user interface on the relay front panel and can be uploaded
for subsequent fault analysis.
2.4.3 Event Log
To collect sequence-of-events (SoE) information, the relay incorporates a non-volatile
memory to store five event logs. Each event log includes a snapshot of Analog values,
Protection operation status, Binary I/O status and Relay fault code. The event logs are
stored sequentially, the most recent being first and so on. The non-volatile memory
retains its data also in case the relay temporarily loses its auxiliary supply.
The event log facilitates detailed pre- and post-fault analysis of feeder faults and dis-
turbances. The SoE information can be accessed locally via the user interface on the
relay front panel or remotely via the communication interface of the relay.
2.4.4 Access Control
To protect the relay from unauthorized access and to maintain the integrity of informa-
tion, the relay is armed with a three level, role-based user authentication system with
individual password for the operator, engineer and administrator level. The password
is a combination of different navigation keys.
2.5 Power Supply
To be able to operate the relay needs a secured auxiliary voltage supply. The power
supply module forms the voltages required by the protection relay module and the
auxiliary relays.
The power supply board is having universal 24-240V AC / DC input voltage range. It
is galvanically isolated switch mode power supply. It is implemented using fly-back
topology where output voltages (+12V and -15V) are obtained using an isolation
transformer. The output voltages are sensed through optical isolation
REF601 overview

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Uaux
+ 12 V
1A Slow
24...240V AC / DC
- 15 V
Fig. 3 – Power supply unit input / output of relay REF601
Unit is able to accept a wide voltage range as following:
Description Range Tolérance Frequency Insulation
Input Voltage
Power
24…240Vdc*
24…240Vac
70%…+120%
85%…+110% 50Hz
Galvanic, 2kV
rms
* Ripple up to 12% has to be acceptable to the unit.
REF601 overview

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Technical data
Section 3 Technical data
Power Supply
Uaux nominal 24...240 V AC, 50 Hz
24...240 V DC
Uaux variation 85...110% of Un (20.4...264 V AC)
70...120% of Un (16.8...288 V DC)
Burden of auxiliary voltage supply
under quiescent (Pq)/operating
condition
< 5.0 VA
Ripple in the DC auxiliary voltage Max 12% of the DC value (at frequency of 100
Hz)
Maximum interruption time in the
auxiliary DC voltage without
resetting the relay
50 ms at Uaux rated
Dimensions
Width frame 130.0 mm,
case 121.5 mm
Height frame 160.0 mm,
case 151.5 mm
Depth case 92 mm, 101 mm with terminal
Weight relay 1.2 kg
Energizing inputs
Rated frequency 50 Hz ± 5 Hz
Phase current
inputs
Input type Rogowski coil sensor
Nominal primary current
In(amp) selection
80A , 250A
Rated transformation ratio,
Kra
250A / 0.15V at 50Hz
250A / 0.18V at 60Hz
Linear current measurement
range
8 A - 25 kA
Earth current input Input type Current Transformer
Rated current, In40 / 1A
Burden at rated current < 0.1 VA at 1A
Linear current measuring
range
0.025 x In - 12.5 x In
Thermal withstand capability:
• Continuously
• For 1 s
5 A
100 A
Dynamic current withstand:
• Half-wave value 250 A

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Technical data
Binary inputs
Rated voltage 24...240 V AC / DC
Operating range 85...110% of Un for AC
70...120% of Un for DC
Current drain 2...20 mA
Power consumption/input <0.5 W
Input sensing time 100 msec
Trip2 output ( Normally open contact )
Rated voltage 240 V AC / DC
Continuous carry 6 A at 250V AC
Make and carry for 3.0 s 8 A at 24V DC
Make and carry 0.5 s 10 A at 24V DC
Breaking capacity when the control-circuit time
constant L/R<40 ms at 30 / 220 V DC
4 A/0.15 A
Minimum contact load 100 mA at 24 V AC / DC
Signal output ( O/C, E/F Trip, Unit ready, Breaker close )
Rated voltage 240 V AC / DC
Continuous contact carry 6 A at 250V AC
Make and carry for 3.0 s 8 A at 24V DC
Make and carry 0.5 s 10 A at 24V DC
Breaking capacity when the control-circuit time
constant L/R<40 ms at 30 / 220 V DC
4 A/0.15 A
Minimum contact load 100 mA at 24 V AC / DC
Output relays
Trip1 output ( Normally closed contact )
Rated voltage 240 V AC / DC
Continuous contact carry 8 A at 250V AC
Make and carry for 3.0 s 15 A at 24V DC
Make and carry 0.5 s 30 A at 24V DC
Breaking capacity when the control-circuit time
constant L/R<40 ms, at 35 / 220 V DC
5 A/ 0.2 A
Minimum contact load 100 mA at 24 V AC / DC

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Technical data
Protection functions
Three-phase non-directional overcurrent protection
Low-set stage I > Setting range of pick-up
current
0.2...1.2 x In in steps of 0.05,
Excludable
Setting range of time multipler
‘ k ‘
0.1...1.6, in steps of 0.1
Inverse time characteristics IEC 60255-3:
Very inverse,
Accuracy of pick-up current NA (Only VI Curve)
Accuracy of operate time
IDMT characteristic class E(5) or ± 30 msec
Reset ratio IDMT : 0.96
High-set stage I >> Setting range of pick-up
current
0.2...5 x In in steps of 0.1,
Excludable
Operation mode Definite time
Operate time t >> 0.05...1 sec in steps of 0.05
Accuracy of pick-up current ± 10% of set value
Accuracy of operate time ± 5% of set value or ± 30 msec
Reset ratio 0.98
Very High-set stage
I >>>
Setting range of pick-up
current
0.8...15 x In in steps of 0.2,
Excludable
Operation mode Definite time
Operate time t >>> 0.05...0.2 sec in steps of 0.05
Accuracy of pick-up current ± 10% of set value
Accuracy of operate time ± 5% of set value or ± 30 msec
Reset ratio 0.98

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Technical data
Non-directional earth-fault protection
Low-set stage Io > Nominal value of earth current 1 A
Measurement range 0.025 In ...12.5 In 1)
Setting range for External earth
fault measurement
0.025..0.5 x In in steps of
0.0125, Excludable
Operate time at DT mode to > 0.1...1 sec insteps of 0.05
Accuracy of pick-up current ± 5% of set value
Accuracy of operate time :
DMT characteristic ± 5% of set value or ± 30
msec
Reset ratio 0.98
High-set stage
Io >>
Setting range 0.25...12.5 x In in steps of
0.25, Excludable
Operation mode Definite time
Operate time to >> 0.05...0.2 in steps of 0.05
Accuracy of pick-up current ± 15% of set value
Accuracy of operate time ± 5% of set value or ± 30 m
sec
Reset ratio 0.98
1) Earth current measurement makes use of the external core balance CT input for currents
upto 7 In.When the measured current exceeds 7 In , measurement switches from external
input to internal vector summation mode. Conversely, when the measured current reduces
to a level below 6 In, measurement switches from internal to external CT input mode.
The automatic swicthing of measurement modes, allows a wide dynamic measurement
range of 1 : 500 .
Transformer inrush detection
Inrush threshold value 0.2...20 x In
Ratio Setting 30%...50%
Degree of protection of flush-mounted relay
Front side IP 42
Sides with connection terminal IP 20