PCS 9641s x technical manual EN overseas general x r1 00

Copyright © 2020 NR. All rights reserved.
NR, the NR logo are either registered trademarks or trademarks of NR Electric Co., Ltd. No NR
trademarks may be used without written permission. NR products appearing in this document may
be covered by P.R. China and foreign patents. NR Electric Co., Ltd. reserves all rights and
benefits afforded under P.R. China and international copyright and patent laws in its products,
including but not limited to software, firmware and documentation. NR Engineering Co., Ltd. is
licensed to use this document as well as all intellectual property rights owned or held by NR
Electric Co., Ltd, including but not limited to copyright, rights in inventions, patents, know-how,
trade secrets, trademarks and trade names, service marks, design rights, database rights and
rights in data, utility models, domain names and all similar rights.
The information in this document is provided for informational use only and does not constitute a
legal contract between NR and any person or entity unless otherwise specified. Information in this
document is subject to change without prior notice.
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
1.1 About This Manual
The technical manual describes the protection, automation, control, and supervision functions of

PCS S series device, and contains operation principle descriptions, and lists function blocks, logic
diagrams, input and output signals, setting parameters and technical data, sorted per function, as
well as the hardware of the device. The manual can be used as a technical reference during the
engineering phase and during normal service. In addition, the manual also includes a glossary
that lists and defines technical terms used throughout the manual.

1.2 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 device, product handling or a certain
section of the documentation which must be given particular attention.

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

PCS-9641S Motor Relay
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Preface

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.

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.

II

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Preface

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

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.

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Preface

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.

1.4 Document Conventions


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”.

1.5 Symbols


AND Gate

&



IV

&

>=1

>=1

OR Gate

>=1



&

Comparator

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Preface



Binary signal Input
BI



xxx

Signal input
SIG



Setting input
SET



xxx

Enable input
EN



xxx

xxx

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



Timer
Fixed delay pickup (10ms), fixed delay drop-out (2ms)
10ms



2ms

Timer
Settable delay pickup, fixed delay drop-out
[Tset1]



0ms

Timer
Fixed delay pickup, settable delay drop-out
0ms



[Tset2]

Timer
Settable delay pickup, settable delay drop-out
[Tset1]

[Tset2]

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

Generator

G


Transformer



Reactor



Motor

M


Capacitor

C


Busbar



Circuit breaker
52



Current transformer
3CT

*



VI

Voltage transformer

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Preface

3VT



Disconnector



Earth

1.6 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

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

1.8 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 this device. 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

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Preface

Introduces the features of this device, 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, and provides the relevant logic diagrams.

4 Control Functions
Describes the logic for the control of disconnectors and circuit breakers.

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

6 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.

7 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.

8 Hardware
Describes the hardware of the PCS S series device family and provides general information on
the product structure and the modules’ information.

9 Settings
Provides a list of all settings of this device, setting ranges, units, steps and default values are also
listed. Organization of the settings is similar to the settings organization in the device and in the
PCS-Studio configuration tool.

Appendix A Glossary
Describes the abbreviations adopted in this manual.

1.9 Document Revision History

PN: ZL_PCS-9641S_X_Technical Manual_EN_Overseas General_X
Current version: R1.00

VIII

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Preface
Corresponding Version
Date
Document

Software

R1.00

R1.10

2020-05-15

Description of change



Form the original manual.

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Preface

X

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Introduction

1 Introduction

1

Table of Contents
1.1 Application ....................................................................................................... 2-1
1.2 Functions ......................................................................................................... 2-1
1.3 Features ............................................................................................................ 2-6

List of Figures
Figure 1.1-1 Functional diagram of PCS-9641S ....................................................................... 2-1

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1 Introduction

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2-b

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Introduction

1.1 Application
The PCS-9641S relay is a protection, control and monitoring unit for various kinds of motors on
solidly grounded, impedance grounded, Peterson coil grounded and ungrounded system. This
relay is suitable for wall surface mounted indoors or outdoors or flush mounted into a control panel.
With its flexibility and the powerful PCS-Studio configuration tool, the PCS-9641S offers
future-oriented system solutions with high investment security and low operating costs.
The function diagram of this relay is shown in Figure 1.1-1.
Busbar
3VTs

27P

59P

59Q

81U

81O

81R

VTS

59G

52
32R

*

55

3CTs

50P

*

37P

51P

37

67P

51Q

49

50BF

CTS

1CT

50G

Motor

CLP

51G

M

67G

87M

FR

1VT

*

3CTs

Figure 1.1-1 Functional diagram of PCS-9641S

The PCS-9641S is widely adopted not only for conventional substations, but also for digital
substations. It supports IEC 61850 Editions 1 and 2 and provides GOOSE network interfaces with
high real-time performance. The process level network supports peer-to-peer (P2P) mode and
networking mode, including single network mode and dual network mode. The station level
network can also receive and send MMS messages (such as interlocking signals) or process level
GOOSE messages (such as circuit breakers or disconnectors positions and trip signals).

1.2 Functions
1

Protection functions
ANSI

Protection Functions

Remark


87M

Current differential protection

Biased current differential protection with 2nd & 3rd
harmonic control element



Instantaneous current differential protection



Magnetic balance differential protection

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1 Introduction

1

67P
50/51P

Phase overcurrent protection



Up to 6 stages with independent logic



Voltage control element for each stage



Optional direction element for each stage, including
forward direction, reverse direction and non-direction



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



Selectable trip purpose or alarm purpose for each
stage



Up to 6 stages with independent logic



Optional direction element for each stage, including
forward direction, reverse direction and non-direction

67G
50/51G


Earth fault protection

Optional

measured

zero-sequence

current

or

calculated zero-sequence current


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



Selectable trip purpose or alarm purpose for each
stage


CLP

50/51Q

Cold load pickup

Negative-sequence
overcurrent protection

It can be triggered by on-load signal or circuit breaker
position



Short resetting is supported



Up to 2 stages with independent logic



Optional direction element for each stage, including
forward direction, reverse direction and non-direction



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



Selectable trip purpose or alarm purpose for each
stage

50/51R



Up to 2 stages with independent logic



Full-current RMS value includes 2 ~11

RMS overcurrent protection

nd

th

harmonic

components


Selectable trip purpose or alarm purpose for each
stage


37

Undercurrent protection

Optional blocking condition, including circuit breaker

position and current criterion



Selectable trip purpose or alarm purpose for each
stage

49

2-2

Thermal overload protection



Two stages of thermal overload protection, one stage
for alarm purpose and the other stage for trip purpose

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Introduction


Up to 2 stages with independent logic



Optional definite-time characteristic and inverse-time

1

characteristic for each stage
59P

Overvoltage protection



Optional phase voltage or phase-to-phase voltage



Optional “1-out-of-3” logic or “3-out-of-3” logic



Selectable trip purpose or alarm purpose for each
stage

59Pos

59Q

59G

Positive-sequence



One stage of positive-sequence overvoltage protection

overvoltage protection



Selectable trip purpose or alarm purpose



Up to 2 stages with independent logic



Selectable trip purpose or alarm purpose for each

Negative-sequence
overvoltage protection

Residual

stage

overvoltage

protection



Up to 2 stages with independent logic



Optional

measured

zero-sequence

voltage

or

calculated zero-sequence voltage


Selectable trip purpose or alarm purpose for each
stage



Up to 2 stages with independent logic



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

27P

Undervoltage protection



Optional phase voltage or phase-to-phase voltage



Optional “1-out-of-3” logic or “3-out-of-3” logic



Check mode using circuit breaker position and current
criterion



Blocked by instantaneous VT circuit failure



Selectable trip purpose or alarm purpose for each
stage

32R

Reverse power protection



Up to 2 stages with independent logic



Selectable trip purpose or alarm purpose for each
stage

37P

Underpower protection



Up to 2 stages with independent logic



Selectable trip purpose or alarm purpose for each
stage

55

Power factor protection



1 stage logic



Selectable trip purpose or alarm purpose for each
stage

81O

Overfrequency protection

81U

Underfrequency protection

81R

Frequency
protection

rate-of-change



Up to 6 stages with independent logic



Voltage control element



Up to 6 stages with independent logic



Voltage control element



Up to 6 stages with independent logic



Voltage control element

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1 Introduction

1



Breaker failure protection and re-trip function



Optional current criterion (phase overcurrent element,

zero-sequence

50BF

Breaker failure protection

overcurrent

element,

negative-sequence overcurrent element)


It can be initiated by current, circuit breaker position or
external binary input


Voltage

VTS

Current

Tripping circuit supervision

Control functions


4

5

2-4

transformer

supervision

TCS

3

transformer

supervision

CTS

2

Two time delays

Circuit breaker & disconnector control (Remote/Local)

Measurement functions


Energy metering (active and reactive energy are calculated in import and export direction
respectively)



Power (Apparent/Active/Reactive)



Power factor



Frequency



Event recorder including 1024 disturbance items, 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.)

Supervision functions


VT circuit supervision



CT circuit supervision



Trip/Close coil supervision



Self-diagnostic



DC power supply supervision



System frequency supervision

Communication functions


Up to four 10Base-T/100Base-TX copper Ethernet ports using IEC 61850, DNP3.0 or
IEC 60870-5-103 over TCP/IP



Up to four 100Base-FX optical Ethernet ports using IEC 61850, DNP3.0 or IEC
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Introduction

60870-5-103 over TCP/IP

6

7

8



Two RS-485 serial ports using IEC 60870-5-103 or Modbus



One RS-485 serial port for clock synchronization



Support GOOSE communication module using IEC 61850-8-1 GOOSE



Full compatibility between IEC 61850 Editions 1 and 2



Redundancy protocols PRP and HSR



One front RJ45 port for debugging

1

Digital interface


Support IEC 61850 MMS Server via extendable electrical or optical Ethernet port



Support IEC 61850-8-1 GOOSE via extendable electrical or optical Ethernet port

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 15/18 (6U, 1/3 × 19" or 6U, 1/2 × 19" chassis) 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



Fault location



Fault phase selection



System phase sequences rotation function (ABC or ACB)



Clock synchronization


IRIG-B: IRIG-B via RS-485 differential level or TTL level



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



IEEE1588: Clock message based on IEEE1588 via optical fiber interface

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1 Introduction

1




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,
control, measurement and monitoring, easy to use and maintain.



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 analogue programming are supported.



Modularized hardware design makes the device be easily upgraded or repaired by a qualified
service person. It can be combined 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.



Fully 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

2-6

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Introduction

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 small size and large size 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



Multiple variants with case size 1/3 or 1/2 × 19"



Protection class of front side is up to IP54



PCS-Studio engineering tool 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 entire 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.



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.



Fully integrates multi functions into one device and can realize the protection and monitoring

function of feeder and capacitor etc.



Comprehensive functionality includes phase overcurrent protection, earth fault overcurrent
protection, negative-sequence overcurrent protection, overvoltage protection, undervoltage
protection, frequency protection, reverse power protection, breaker failure protection,
undercurrent protection etc. The breaker failure, measuring, monitoring and control function
are supported.



The overcurrent protection is combined with harmonic blocking and cold load pickup logic,
which can prevent mal-operation affected by inrush current while the transformer is no-load
energized.



Selectable IEC, ANSI inverse-time characteristic curves that can be defined by users, and the
inverse-time drop-out curve selection is supported.



Overvoltage and undervoltage protection support single phase and three-phase operation
criteria setting, phase voltage and phase-to-phase voltage measurement mode are selectable,
which can be for various applications.



Complete event recording function is provided: 64 latest protection operation reports, 1024

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2-7


1 Introduction

latest supervision records, 1024 latest control operation records, 1024 latest user operation
records and 1024 latest records of time tagged sequence of event (SOE) can be recorded.

1

2-8

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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 AC Voltage Input ................................................................................................................... 2-1
2.1.3 Power Supply ....................................................................................................................... 2-2

2.1.4 Binary Input .......................................................................................................................... 2-2
2.1.5 Binary Output........................................................................................................................ 2-4

2.2 Mechanical Specifications .............................................................................. 2-5
2.3 Ambient Temperature and Humidity Range .................................................. 2-6
2.4 Communication Port ....................................................................................... 2-6
2.4.1 EIA-485 Port ......................................................................................................................... 2-6
2.4.2 Ethernet Port ........................................................................................................................ 2-6
2.4.3 Optical Fiber Port ................................................................................................................. 2-7
2.4.4 Print Port ............................................................................................................................... 2-7
2.4.5 Clock Synchronization Port .................................................................................................. 2-7

2.5 Type Tests ........................................................................................................ 2-7
2.5.1 Environmental Tests ............................................................................................................. 2-7
2.5.2 Mechanical Tests .................................................................................................................. 2-8
2.5.3 Electrical Tests ...................................................................................................................... 2-8
2.5.4 Electromagnetic Compatibility .............................................................................................. 2-8

2.6 Certifications .................................................................................................. 2-10
2.7 Liquid Crystal Display (LCD) ........................................................................ 2-10
2.8 Terminals .........................................................................................................2-11
2.8.1 Ring Ferrule ........................................................................................................................ 2-11
2.8.2 Pin Ferrule .......................................................................................................................... 2-11

2.9 Measurement Scope and Accuracy ..............................................................2-11
2.10 Management Function................................................................................. 2-12
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2