PCS 9671s x technical manual EN overseas general x r1 11

Copyright © 2020 NR. All rights reserved.
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To the extent required the products described herein meet applicable IEC and IEEE standards,
but no such assurance is given with respect to local codes and ordinances because they vary
greatly.
Although every reasonable effort is made to present current and accurate information, this
document does not purport to cover all details or variations in equipment nor provide for every
possible contingency to be met in connection with installation, operation, or maintenance. Should
further information be desired or should particular problems arise which are not covered
sufficiently for your purposes, please do not hesitate to contact us.



Preface

Preface
About This Manual
The manual describes the protection, measurement and supervision functions with the

information of relevant hardware for PCS-9671S Transformer Relay.

Safety Information
This manual is not a complete index of all safety measures required for operation of the
equipment (module or device). However, it comprises important information that must be followed
for personal safety, as well as to avoid material damage. Information is highlighted and illustrated
as follows according to the degree of danger:
Indicates an imminently hazardous situation that, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous situation that, if not avoided, may result
in minor or moderate injury or equipment damage.
Indicates that property damage can result if the measures specified are
not taken.

Important information about the product, please pay attention to avoid
undesired result.

Instructions and Warnings
The following hazard statements apply to this device.

Disconnect or de-energize all external connections BEFORE opening this
device. Contact with hazardous voltages and currents inside this device
can cause electrical shock resulting in injury or death.

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Preface

Contact with instrument terminals can cause electrical shock that can
result in injury or death.

Use of this equipment in a manner other than specified in this manual can
impair operator safety safeguards provided by this equipment.

Have only qualified personnel service this equipment. If you are not
qualified to service this equipment, you can injure yourself or others, or
cause equipment damage.

This device is shipped with default passwords. Default passwords should
be changed to private passwords at installation. Failure to change each
default password to a private password may allow unauthorized access.
NR shall not be responsible for any damage resulting from unauthorized
access.

DO NOT look into the fiber (laser) ports/connectors.

DO NOT look into the end of an optical cable connected to an optical
output.

DO NOT perform any procedures or adjustments that this instruction
manual does not describe.

During installation, maintenance, or testing of the optical ports, ONLY use
the test equipment qualified for Class 1 laser products!

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Preface

Incorporated components, such as LEDs, transceivers, and laser emitters,
are NOT user serviceable. Return units to NR for repair or replacement.

Equipment components are SENSITIVE to electrostatic discharge (ESD).
Undetectable permanent damage can result if you do not use proper ESD
procedures. Ground yourself, your work surface, and this equipment
BEFORE removing any cover from this equipment. If your facility is not
equipped to work with these components, contact NR about returning this
device and related NR equipment for service.

Insufficiently rated insulation can deteriorate under abnormal operating
conditions and cause equipment damage. For external circuits, use wiring
of SUFFICIENTLY RATED insulation that will not break down under
abnormal operating conditions.

SEVERE power and ground problems can occur on the communications
ports of this equipment as a result of using non-standard cables. Please
use the wiring method recommended in the manual for communication
terminals.

DO NOT connect power to the relay until you have completed these

procedures and receive instruction to apply power. Equipment damage
can result otherwise.

Use of controls or adjustments, or performance of procedures other than
those specified herein, may RESULT IN hazardous radiation exposure.

The firmware may be upgraded to add new features or enhance/modify
existing features, please MAKE SURE that the version of this manual is
compatible with the product in your hand.

Document Conventions
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Preface



The abbreviations and acronyms in this manual are explained in “Appendix A Glossary”. The
Glossary also contains definitions of important terms.



Menu path is connected with the arrow "→" and bold.
For example: the access path of protection settings is: MainMenu→Settings→Protection
Settings



Settings not in the table should be placed in brackets.
For example: the system setting [Opt_SysFreq]



Cross-references are presented in italics.
For example: refer to Figure 1.1-1, refer to Table 1.1-1, reference to Section 1.1



Binary input signals, binary output signals, analogs, LED lights, buttons, and other fixed
meanings, should be written in double quotes and bold.
For example: press the button "ENT".

Symbols


AND Gate

&



&

&

>=1

>=1

OR Gate

>=1



Comparator



Binary signal Input
BI



Signal input
SIG



xxx

xxx

Setting input
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Preface
SET



Enable input
EN



xxx

xxx

Timer
Optional definite-time or inverse-time characteristic
Timer
t
t



Timer
Fixed delay pickup (10ms), fixed delay dropout (2ms)
10ms



2ms

Timer
Settable delay pickup, fixed delay dropout
[Tset1]



0ms

Timer
Fixed delay pickup, settable delay dropout
0ms



[Tset2]

Timer
Settable delay pickup, settable delay dropout
[Tset1]



[Tset2]

Generator

G



Transformer

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

Reactor



Motor

M



Capacitor

C



Busbar



Circuit breaker

52



Current transformer
3CT

*



Voltage transformer

3VT



Disconnector

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

Earth

Three-phase Corresponding Relationship
Basic
A, B, C

L1, L2, L3

R, Y, B

AN, BN, CN

L1N, L2N, L3N

RN,YN, BN

ABC

L123

RYB

U (voltage)

V

U

Example
Ia, Ib, Ic, I0

IL1, IL2, IL3, IN

IR, IY, IB, IN

Ua, Ub, Uc

VL1, VL2, VL3

UR, UY, UB

Uab, Ubc, Uca

VL12, VL23, VL31

URY, UYB, UBR

U0, U1, U2

VN, V1, V2

UN, U1, U2

Warranty
This product is covered by the standard NR 10-year warranty. For warranty details, please consult
the manufacturer or agent for warranty information.

Document Structure
This manual is a comprehensive work covering the theories of protection, control, supervision,
measurement, etc. and the structure & technical data of relevant hardware. Read the sections that
pertain to your application to gain valuable information about using the PCS-9671S. To
concentrate on the target sections of this manual as your job needs and responsibilities dictate.
An overview of each manual section and section topics follows.

1 Introduction
Introduces PCS-9671S features, summarizes functions and applications of the device.

2 Technical Data
Lists device specifications, type tests, and ratings.

3 Protection Functions
Describes the function of various protection elements, gives detailed specifics on protection
scheme logic, provides the relevant logic diagrams.

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Preface

4 Measurement

Provides information on viewing fundamental and rms metering quantities for voltages and
currents, as well as power and energy metering data.

5 Supervision
Describes self-supervision technique to help diagnose potential difficulties should these occur and
includes the list of status notification messages. Provides a troubleshooting chart for common
device operation problems.

6 System Functions
Describes how to perform fundamental operations such as clock synchronization, communicating
with the device, switching active setting group, checking relay status, reading event reports and
SER (Sequential Events Recorder) records.

7 Hardware
Describes the hardware of the PCS series device family and provides general information on the
product structure and the modules technical data.

8 Settings
Provides a list of all settings and their ranges, unit, steps, defaults. The organization of the
settings is similar to the settings organization in the device and in the PCS-Studio software.

Appendix A Glossary
Describes the abbreviations adopted in this manual.

Document Revision History
PN: ZL_PCS-9671S_X_Technical Manual_EN_Overseas General_X
Current version: R1.11
Corresponding Version
Date

Description of change

Document

Software

R1.00

R1.00

2019-10-25



Form the original manual.

R1.10

R1.00

2019-12-09



Update of technical data.

PCS-9671S Transformer Relay

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Preface

R1.11

R1.11



Update of technical data.



Improved some description of 87T in Section 3.1.



Added PWR plug-in module NR6311A.



Added CPU plug-in module NR6106AH.



Added CPU plug-in module NR6106AP.



Added BIBO plug-in module NR6661A.

2020-06-11

PCS-9671S Transformer Relay

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Date: June 15, 2020



1 Introduction

1 Introduction

1
Table of Contents
1.1 Application ....................................................................................................... 1-1
1.2 Functions ......................................................................................................... 1-2
1.3 Features ............................................................................................................ 1-4

List of Figures
Figure 1.1-1 Two-winding transformer .................................................................................... 1-1
Figure 1.1-2 Three-winding transformer ................................................................................. 1-1
Figure 1.1-3 Typical application of a 3-winding transformer ................................................ 1-2

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1 Introduction

1.1 Application
PCS-9671S can be applied for a two-winding transformer, three-winding transformer,
auto-transformer in any voltage level. PCS-9671S provides the main protection elements, such as:
current differential protection and restricted earth fault protection. Ancillary functions of fault
diagnostic, disturbance records, event records and communication function are integrated in the
device.
PCS-9671S is adaptive to the following 2/3-winding transformers.

Figure 1.1-1 Two-winding transformer

Figure 1.1-2 Three-winding transformer

The function diagrams for protecting a 3-winding transformer is shown below.

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1 Introduction

Side 1

1

*
3CT

52

87T
1CT

64REF

64REF

64REF

50/51P

50/51P

50/51P

50/51G

50/51G

50/51G

*

*
1CT
1CT

*

52

52

3CT

*
3CT

*
Side 2

Side 3

Figure 1.1-3 Typical application of a 3-winding transformer

1.2 Functions
1.

Protection Functions
ANSI

Protection Functions

Remark


Biased differential protection with three slopes



Biased DPFC differential protection



Unrestrained instantaneous differential protection



Optional

inrush

current

distinguished

principles:

harmonic criterion or waveform distortion
87T

Transformer differential protection



Optional harmonic blocking modes: self-adaptive
1Pblk1P mode, 2PBlk3P mode, 1Pblk3P mode



Overexcitation detection: fifth harmonic or third
harmonic criterion

64REF

Restricted earth-fault protection



Optional transfer methods: △→Y or Y→△



Independent CT saturation criterion



Differential CT circuit failure supervision



CT transient characteristic difference detection



CT saturation detection based on 2nd and 3rd
harmonics

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1 Introduction


2 stages with independent logic by default for each
side

50/51P



Phase overcurrent protection

Optional definite-time characteristic and inverse-time
characteristic for each stage



Trip purpose or alarm purpose for each stage



Harmonic control element for each stage



2 stages with independent logic by default for each
side



Optional

measured

zero-sequence

current

or

calculated zero-sequence current
50/51G



Earth fault protection

Optional definite-time characteristic and inverse-time

characteristic for each stage



Selectable trip purpose or alarm purpose for each
stage



2.

Measurement and Metering Functions


3.

4.

Harmonic control element for each stage

Positive sequence currents, zero sequence currents and phase angles

Supervision Functions


CT circuit failure supervision (CTS)



Self-diagnostic



Powerful faults recording (max. buffer for 10,000 sampled points at 4.8 or 9.6 kHz)



Event Recorder including 1024 disturbance records, 1024 binary events, 1024
supervision events, 256 control logs and 1024 device logs.



Disturbance recorder including 64 disturbance records with waveforms (The file format of
disturbance recorder is compatible with international COMTRADE file.)



Single line diagram representation in display

Communication Functions


Support of various protocols
Modbus, DNP3.0, IEC 60870-5-103, IEC 61850 Ed.1 & Ed.2, IEC 61850 MMS Server,
IEC 61850-8-1 GOOSE, IEC 61850-9-2LE SV, IEC 62439 Parallel Redundancy Protocol
(PRP), IEC 62439 High-availability Seamless Ring (HSR) Redundancy Protocol, IEEE
802.1w Rapid Spanning Tree Protocol (RSTP).



Up to four 10Base-T/100Base-TX copper Ethernet ports



Up to four 100Base-FX optical Ethernet ports



Two RS-485 serial ports for communication or printer



One RS-485/TTL serial port for clock synchronization

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1 Introduction



1

5.

6.

Two RJ45 debugging ports (front and rear)

User Interfaces


Friendly HMI interface with LCD, easy-to-use keypad aids simple navigation and
set-point adjustment



Push buttons for open/close, switch for selection between local and remote control, and
user's login and logout authority management



4 Programmable operator pushbuttons with user-configurable labels



Up to 15 programmable target LEDs with user-configurable labels



1 RS-232 or RS-485 rear ports for printer



Language switchover—English+ selected language



Configuration tool—PCS-Studio

Additional Functions


User programmable logic



Switching system phase sequences function (ABC or ACB)



Clock synchronization





IRIG-B: IRIG-B via RS-485 differential level, TTL level or optical fibre interface



PPS: Pulse per second (PPS) via RS-485 differential level or binary input



PPM: Pulse per minute (PPM) via RS-485 differential level or binary input



IEEE 1588: Clock message based on IEEE 1588 via optical fibre interface



SNTP (PTP): Unicast (point-to-point) SNTP mode via Ethernet network



SNTP (BC): Broadcast SNTP mode via Ethernet network



Message (IEC103/Modbus/DNP3.0): Clock messages through IEC103 protocol,
Modbus protocol and DNP3.0 protocol

Cyber security


NERC CIP



IEC 62351



IEC 62443



IEEE 1686

1.3 Features


Unified software and hardware platform, comprehensive power grid solutions of protection,
measurement and monitoring, easy to use and maintain.
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1 Introduction



High reliability and redundancy design for drive systems of the sampling circuit and the output
circuit ensure that overall reliability of the device is high. Real-time sampling based on dual AD
can mutually check and detect the potential abnormality in the sampling circuit in time. The
control power supply of the output relay is independent with the control circuit of trigger signals,
which can prevent from undesired operation caused by the abnormality of drive circuit of
output relays.



Various function modules can satisfy various situations according to the different requirements
of users. Flexible and universal logic programming, user-defined configuration of BI/BOs,
buttons and LEDs and powerful analog programming are supported.



Modularized hardware design makes the device be easily upgraded or repaired by a qualified
service person. It can be mixed with different I/O modules, with online self-check and
monitoring function, and the device can be restored from abnormal operation only need to
replace a single abnormal module.



Support memory check and error correction function, ensure high reliability and safety.



Support the internet communication protocol of native PRP/HSR and RSTP.



Fully compatible with IEC 61850 edition 1 & edition 2, support MMS service, IEC 62351
communication service, GOOSE communication in station level & process level, SV
communication with multi-sampling rate.



Full comply with cyber security standards, including IEC62443, IEC62351, IEEE1686,
NERC-CIP, support role based access control (RBAC), security audit, security encryption
communication and security tool, improve the cyber security capability of devices.



Powerful COMTRADE fault and disturbance recording function is supported. The whole
recording time is automatically configurable by the fault duration, which is convenient to fault
analysis and replay. The recording sample rate is up to 9.6kHz.



Settable secondary rated current (1A/5A) and settable voltage threshold of binary input



Support LCD, control and multifunction button



Support flush mounting, semi-flush mounting, surface mounting, wall mounting and other
mounting methods.



Cross screw IO, CT/VT terminals can support AWG12 specification connector and 4mm 2 lead



Protection class of front side is up to IP54



PCS-Studio is the application software on the user's PC for the interface with PCS S series
devices providing all the related functionality. It ranges from device configuration to full
substation design of bay integration.



Support IEEE1588, IRIG-B clock synchronization



Support actual system phase sequence, either ABC or ACB, incorrect connection of actual
phase sequence can automatically be verified and relevant protection functions can be
blocked.

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1 Introduction



Equipped with high-speed large capacity output relay, its operation speed is less than 1ms and
its break capacity is up to 10A. The real-time supervision for output drive circuit can detect the
abnormality in advance.



Support setup up to 40 users and allow each user to own different password and access
authority.



The tripping output contacts can be configured by tripping matrix, which is flexible, convenient
and suitable to any mode of tripping.



Multiple inrush current blocking options are provided. Self-adaptive inrush current blocking
criterion can ensure the relay fast operation for transformer energized on to a slight fault,
meanwhile it will avoid the unwanted operation in the case of the energization inrush current
caused by energizing transformer with no load, the recovery inrush current caused by cutting
off the transformer external fault, and the sympathetic inrush current.



Biased DPFC differential protection is regardless of load current and is sensitive to small
internal fault current within the transformer. Its anti CT saturation performance is also strong.

1

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2 Technical Data

2 Technical Data
Table of Contents
2.1 Electrical Specifications ................................................................................. 2-1
2.1.1 AC Current Input ................................................................................................................... 2-1
2.1.2 Power Supply ....................................................................................................................... 2-1
2.1.3 Binary Input .......................................................................................................................... 2-2
2.1.4 Binary Output........................................................................................................................ 2-3

2.2 Mechanical Specifications .............................................................................. 2-4
2.3 Ambient Temperature and Humidity Range .................................................. 2-5
2.4 Communication Port ....................................................................................... 2-5
2.4.1 EIA-485 Port ......................................................................................................................... 2-5
2.4.2 Copper Ethernet Port ........................................................................................................... 2-5
2.4.3 Optical Fibre Port ................................................................................................................. 2-6
2.4.4 Print Port ............................................................................................................................... 2-6
2.4.5 Clock Synchronization Port .................................................................................................. 2-6

2.5 Type Tests ........................................................................................................ 2-7
2.5.1 Environmental Tests ............................................................................................................. 2-7
2.5.2 Mechanical Tests .................................................................................................................. 2-7
2.5.3 Electrical Tests ...................................................................................................................... 2-7
2.5.4 Electromagnetic Compatibility .............................................................................................. 2-7

2.6 Certifications .................................................................................................... 2-9
2.7 Liquid Crystal Display (LCD) ........................................................................ 2-10
2.8 Terminals ........................................................................................................ 2-10
2.8.1 Ring Ferrule ........................................................................................................................ 2-10

2.8.2 Pin Ferrule .......................................................................................................................... 2-10

2.9 Measurement Scope and Accuracy ............................................................. 2-10
2.10 Management Function..................................................................................2-11

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2 Technical Data

2.10.1 Clock Performance ........................................................................................................... 2-11
2.10.2 Fault and Disturbance Recording..................................................................................... 2-11
2.10.3 Binary Input Signal ........................................................................................................... 2-11

2.11 Protective Functions ....................................................................................2-11

2

2.11.1 Transformer Current Differential Protection (87T) ............................................................ 2-11
2.11.2 Restricted Earth Fault Protection (64REF) ....................................................................... 2-12
2.11.3 Phase Overcurrent Protection (50/51P) ........................................................................... 2-12
2.11.4 Earth Fault Overcurrent Protection (50/51G) ................................................................... 2-13

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2 Technical Data

2.1 Electrical Specifications

“System phase sequence”, which can be set by PCS-Studio, this setting
informs the device of the actual system phase sequence, either ABC or
ACB. CT inputs on the device, labeled as A, B and C, must be connected
to system phase A, B and C for correct operation.

2.1.1 AC Current Input
Phase rotation

ABC or ACB

Nominal frequency (fn)

50Hz, 60Hz

Rated current (In)

1A/5A (settable)

Linear to

0.05In~40In

Thermal withstand
-continuously

4In

-for 10s

30In

-for 1s

100In

-for half a cycle

250In

Burden

<0.05VA/phase @1A, <0.25VA/phase @5A

Number

Up to 12 AC current inputs

2.1.2 Power Supply
IEC 61000-4-11:2017
Standard
IEC 61000-4-29:2000
100Vac/110Vac/

115Vac/120Vac/
110Vdc/125Vdc/
Rated voltage

24Vdc/48Vdc

127Vac/220Vac/
220Vdc/250Vdc
230Vac/240Vac/
250Vac

Permissible voltage range

18~72Vdc

Permissible AC ripple voltage

Max. 15% of the nominal auxiliary voltage

Burden

Max. 15W (default hardware configuration)

Quiescent condition

PCS-9671S Transformer Relay

88~300Vdc

80~275Vac

2-1
Date: June 15, 2020

2