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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 desc

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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

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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

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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

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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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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”

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1 Introduction

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Introduces the features of this device, summarizes functions and applications of the device

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

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

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Date Description of change Document Software

R1.00 R1.10 2020-05-15  Form the original manual

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1

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1

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

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 & 3rdharmonic control element

 Instantaneous current differential protection

 Magnetic balance differential protection

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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

67G

50/51G Earth fault protection

 Up to 6 stages with independent logic

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

 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

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

 Short resetting is supported

50/51Q Negative-sequence

overcurrent protection

 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 RMS overcurrent protection

 Up to 2 stages with independent logic

 Full-current RMS value includes 2nd~11th harmonic components

 Selectable trip purpose or alarm purpose for each stage

49 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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1

59P Overvoltage protection

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

 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

overvoltage protection

 One stage of positive-sequence overvoltage protection

 Selectable trip purpose or alarm purpose

overvoltage protection

 Up to 2 stages with independent logic

 Selectable trip purpose or alarm purpose for each stage

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

27P Undervoltage protection

 Up to 2 stages with independent logic

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

 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

 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  Up to 6 stages with independent logic

 Voltage control element 81U Underfrequency protection  Up to 6 stages with independent logic

 Voltage control element

protection

 Up to 6 stages with independent logic

 Voltage control element

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1 50BF Breaker failure protection

 Breaker failure protection and re-trip function

 Optional current criterion (phase overcurrent element, zero-sequence overcurrent element, negative-sequence overcurrent element)

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

 Two time delays

supervision

supervision TCS Tripping circuit supervision

 DC power supply supervision

 System frequency supervision

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1

 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

6 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

7 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

8 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

 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

 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

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1

 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 4mm2 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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1

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

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2

2.10.1 Control Performance 2-12 2.10.2 Clock Performance 2-12 2.10.3 Fault and Disturbance Recording 2-12 2.10.4 Binary Input Signal 2-12

2.11 Protective Functions 2-12

2.11.1 Current Differential Protection (87M) 2-12 2.11.2 Phase Overcurrent Protection (50/51P) 2-13 2.11.3 Earth Fault Overcurrent Protection (50/51G) 2-14 2.11.4 Negative-sequence Overcurrent Protection (50/51Q) 2-15 2.11.5 RMS Overcurrent Protection (50/51R) 2-16 2.11.6 Undercurrent Protection (37) 2-16 2.11.7 Thermal Overload Protection (49) 2-16 2.11.8 Phase Overvoltage Protection (59P) 2-16 2.11.9 Positive-sequence Overvoltage Protection (59Pos) 2-17 2.11.10 Negative-sequence Overvoltage Protection (59Q) 2-17 2.11.11 Residual Overvoltage Protection (59G) 2-17 2.11.12 Phase Undervoltage Protection (27P) 2-17 2.11.13 Reverse Power Protection (32R) 2-18 2.11.14 Underpower Protection (37P) 2-18 2.11.15 Power Factor Protection (55) 2-18 2.11.16 Overfrequency Protection (81O) 2-19 2.11.17 Underfrequency Protection (81U) 2-19 2.11.18 Frequency Rate-of-change Protection (81R) 2-19 2.11.19 Breaker Failure Protection (50BF) 2-20

2.12 Communication Functions 2-20

2.12.1 GOOSE 2-20

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2

“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 and VT inputs on the device, labelled as A, B and C, must be connected to system phase A, B and C for correct operation

Number Up to 7 current inputs according to various applications

600V 660V

Phase-to-phase 519V

1038V 1141V

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100Vac/110Vac/115Vac 120Vac/127Vac/220Vac 230Vac/240Vac/250Vac

Permissible voltage range

IEC 61000-4-11-2007 IEC 61000-4-29-2000

Quiescent condition <15W (default hardware configuration)

Additional for each energized SFP

0.25W ~ 0.35W

Additional for each BI module

Quiescent condition : <1W Additional for each energized binary input:

0.004W @ 24VDC 0.008W @ 48VDC 0.015W @ 110VDC 0.32W @ 220VDC 0.41W @ 250VDC Additional for each BO

module

Quiescent condition: <0.1W Additional for each energized binary output: <0.44W

2.1.4 Binary Input

Settable pickup voltage and drop-out voltage

On value (default set) 69.3~132Vdc 78.75~160Vdc 138.6~264Vdc 157.5~300Vdc

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2

Maximum permissible voltage 300Vdc

Withstand voltage 2000Vac, 2800Vdc (1 min)

Number

Up to 34 (6U, 1/3 × 19", ring ferrule), 41 (6U, 1/3 × 19", pin ferrule), 84 (6U, 1/2 × 19", ring ferrule) or 105 (6U, 1/2 × 19", pin ferrule) binary inputs according to various hardware configurations

Settable pickup voltage and drop-out voltage

Maximum permissible voltage 300Vac

Withstand voltage 2000Vac, 2800Vdc (1 min)

Number

Up to 34 (6U, 1/3 × 19", ring ferrule), 41 (6U, 1/3 × 19", pin ferrule), 84 (6U, 1/2 × 19", ring ferrule) or 105 (6U, 1/2 × 19", pin ferrule) binary inputs according to various hardware configurations

Settable pickup voltage and drop-out voltage

Maximum permissible voltage 300Vdc

Withstand voltage 2000Vac, 2800Vdc (1 min)

Number

Up to 34 (6U, 1/3 × 19", ring ferrule), 41 (6U, 1/3 × 19", pin ferrule), 84 (6U, 1/2 × 19", ring ferrule) or 105 (6U, 1/2 × 19", pin ferrule) binary inputs according to various hardware configurations

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2

2.1.5 Binary Output

Tripping/signalling contact

Maximum system voltage 250Vac, 300Vdc

Pickup time (Typical value) <5ms

Drop-off time (Resistive load) <6ms

Breaking capacity (L/R=40ms)

0.5A@48Vdc 0.35A@110Vdc 0.30A@125Vdc 0.20A@220Vdc 0.15A@250Vdc

Cyclic capacity (2.5 cycle/second,

L/R=40ms)

0.5A@48Vdc 0.35A@110Vdc 0.30A@125Vdc 0.20A@220Vdc 0.15A@250Vdc

Short duration current

30A@3s 50A@1s Durability (Loaded contact) 10000 operations

Number

Up to 18 (6U, 1/3 × 19", ring ferrule), 22 (6U, 1/3 × 19", pin ferrule), 44 (6U, 1/2 × 19", ring ferrule) or 56 (6U, 1/2 × 19", pin ferrule) binary outputs according to various hardware configurations

Heavy-capacity tripping contact

MOV protection (Maximum voltage) 350Vdc, 275Vac

Pickup time (Typical value) <1ms

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2

Breaking capacity (L/R=40ms)

10A@48V 10A@110V 10A@125V 10A@250V

Cyclic capacity (4 cycle/second,

followed by 2 minutes idle for thermal

dissipation)

10A@48V L/R=40ms 10A@110V L/R=40ms 10A@125V L/R=40ms 10A@250V L/R=20ms

Short duration current

30A@3s 50A@1s Durability (Loaded contact) 10000 operations

Number

Up to 4 (6U, 1/3 × 19", ring ferrule) or 12 (6U, 1/2 × 19", ring ferrule) heavy-capacity binary outputs according to various hardware configurations

2.2 Mechanical Specifications

Weight per device

Approx 8.66kg (6U, 1/2 × 19") Approx 6.93kg (6U, 1/3 × 19")

Location of terminal Rear panel of the device

Device structure Plug-in modular type @ rear side, integrated front plate

Protection Class

Front side

IP52 IP54 (valid for surface mounting mode of 6U, 1/3 × 19" or 6U, 1/2 × 19"

case with sealing strip)

Rear side, connection terminals IP20

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Baud rate 4.8kbit/s, 9.6kbit/s, 19.2kbit/s, 38.4kbit/s, 57.6kbit/s, 115.2kbit/s

Maximum transmission distance 500m

2.4.2 Ethernet Port

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2

For Station Level and Process Level

Maximum transmission distance 2km

Minimum receiving power -31dBm

2.4.4 Print Port

Baud rate 4.8kbit/s, 9.6kbit/s, 19.2kbit/s, 38.4kbit/s, 57.6kbit/s, 115.2kbit/s

2.4.5 Clock Synchronization Port

Damp heat test, cyclic IEC60068-2-30:2005

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2

2.5.2 Mechanical Tests

2.5.3 Electrical Tests

Dielectric tests Test voltage 2kV, 50Hz, 1min

Impulse voltage tests Test voltage 5kV

Electrostatic discharge test

IEC 61000-4-2:2008 class Ⅳ For contact discharge: 8kV For air discharge: 15kV

Radio frequency interference tests

IEC 60255-26:2013 class Ⅲ Frequency sweep

Radiated amplitude-modulated 10V/m (rms), f=80~1000MHz, 1400~2700MHz Spot frequency

Radiated amplitude-modulated 10V/m (rms), f=80MHz/160MHz/450MHz/900MHz

Fast transient disturbance tests

IEC 60255-26:2013 Power supply, I/O, Earth: class Ⅳ, 4kV, 5kHz, 5/50ns Communication terminals: class Ⅳ, 2kV, 5kHz, 5/50ns

Surge immunity test

IEC 60255-26:2013 Power supply, AC input, I/O port: class Ⅳ, 1.2/50μs

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Spot frequency 10V (rms), f=27MHz/68MHz Power frequency magnetic field

immunity

IEC 61000-4-8: 2009 class Ⅴ, 100A/m for 1min, 1000A/m for 3s

Pulse magnetic field immunity

IEC 61000-4-9:2016 class Ⅴ, 6.4/16μs, 1000A/m for 3s Damped oscillatory magnetic field

immunity

IEC 61000-4-10:2016 class Ⅴ, 100kHz & 1MHz–100A/m

Conducted emission

IEC 60255-26:2013 0.15MHz~0.50MHz: 79dB (μV) quasi peak, 66dB (μV) average 0.50MHz~30MHz: 73dB (μV) quasi peak, 60dB (μV) average

Radiated emission

IEC 60255-26:2013

Below 1GHz

30MHz~230MHz: 40dB (μV/m) quasi peak @10m, 50dB (μV/m) quasi peak @3m

230MHz~1000MHz: 47dB (μV/m) quasi peak @10m, 57dB (μV/m) quasi peak @3m

Above 1GHz

1GHz~3GHz: 56dB (μV/m) average, 76dB (μV/m) peak @3m

3GHz~6GHz: 60dB (μV/m) average, 80dB (μV/m) peak @3m

Auxiliary power supply performance IEC 60255-26:2013

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2

- Voltage dips

-Voltage short interruptions

Up to 200ms for dips to 40% of rated voltage without reset 50ms for interruption without rebooting without energy storage board (Typical configuration)

500ms for interruption without rebooting with energy storage board (Typical configuration)

 EMC: 2014/30/EU, EN60255-26:2013

 Products safety (LVD): 2014/35/EU, EN60255-27:2014

 IEC 61850: Edition 2, Parts 6, 7-1, 7-2, 7-3,7-4 and 8-1

 IEC 61850: Edition 2, GOOSE Performance Class P1 (3ms)

 IEEE 1588: IEEE Std C37.238TM-2017

 DNP: DNP 3.0

 PRP: IEC 62439-3 Ed.3 (IS 2016)

 HSR: IEC 62439-3 Ed.3 (IS 2016)

2.7 Liquid Crystal Display (LCD)

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2

2.8.1 Ring Ferrule

Connection Type Wire Size Screw Type Torque

Grounding (Earthing) Connection BVR type, 0.8~4mm2 lead M3 0.6~0.8 N⋅m

2.8.2 Pin Ferrule

Connection Type Wire Size Screw Type Torque

2.9 Measurement Scope and Accuracy

Item Range Accuracy

≤ 2.0% of rating (0.05~1.00In, 0.05~1.00Un)

≤ 1.0% of applied quantities (1.00~4.00In, 1.00~1.50Un)

Reactive power (VAr)

0.05~1.50Un 0.05~4.00In

≤ 2.0% of rating (0.05~1.00In, 0.05~1.00Un)

≤ 1.0% of applied quantities (1.00~4.00In, 1.00~1.50Un)

Apparent power (VA)

0.05~1.50Un 0.05~4.00In

≤ 2.0% of rating (0.05~1.00In, 0.05~1.00Un)

≤ 1.0% of applied quantities (1.00~4.00In, 1.00~1.50Un)

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2

Energy (Wh)

0.05~1.50Un 0.05~4.00In

≤ 2.0% of rating (0.05~1.00In, 0.05~1.00Un)

≤ 1.0% of applied quantities (1.00~4.00In, 1.00~1.50Un)

Energy (VAh)

0.05~1.50Un 0.05~4.00In

≤ 2.0% of rating (0.05~1.00In, 0.05~1.00Un)

≤ 1.0% of applied quantities (1.00~4.00In, 1.00~1.50Un)

2.10 Management Function

2.10.1 Control Performance

Response time of local control ≤1s

Response time of remote control ≤3s

2.10.2 Clock Performance

Real time clock accuracy ≤1s/day

Accuracy of GPS synchronization ≤1ms

External time synchronization IRIG-B (200-98), PPS, IEEE1588 or SNTP protocol

2.10.3 Fault and Disturbance Recording

Duration & Recording position Settable pre-disturbance, post-disturbance and maximum recorded

duration

2.10.4 Binary Input Signal

Resolution of binary input signal ≤1ms

Binary input mode Potential-free contact

2.11 Protective Functions

2.11.1 Current Differential Protection (87M)

2.11.1.1 Instantaneous Current Differential Protection

Current setting accuracy ≤5%×Setting or 0.02 p.u., whichever is greater

Pickup time ≤ 25ms (at 2 times current setting)

Operating time ≤ 25ms (at 2 times current setting)

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2.11.1.2 Biased Current Differential Protection

Current setting accuracy ≤2.5%×Setting or 0.02 p.u., whichever is greater

Pickup time ≤ 25ms (at 2 times current setting)

Operating time (with blocking criteria) ≤ 35ms (at 2 times current setting)

2.11.1.3 Magnetic Balance Differential Protection

Current setting accuracy ≤1%×Setting or 0.01In, whichever is greater

Pickup time ≤ 25ms (at 2 times current setting)

Operating time ≤ 25ms (at 2 times current setting)

2.11.2 Phase Overcurrent Protection (50/51P)

Without direction controlled element

Current setting accuracy ≤1%×Setting or 0.01In, whichever is greater

Voltage setting accuracy ≤1%×Setting or 0.1V, whichever is greater

Operating time delay accuracy

(Definite-time characteristics) ≤1%×Setting or 25ms (at 2 times current setting)

Operating time delay accuracy

(Inverse-time characteristics) ≤5% of calculated value + 1% current tolerance or 35ms (1.2≤I/Ip≤30)

Drop-out time accuracy (Definite-time

Drop-out time accuracy (Inverse-time

characteristics) ≤5% of calculated value or 30ms

With direction controlled element

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Current setting accuracy ≤1%×Setting or 0.01In, whichever is greater

Voltage setting accuracy ≤1%×Setting or 0.1V, whichever is greater

Operating time delay accuracy

(Definite-time characteristics) ≤1%×Setting or 40ms (at 2 times current setting)

Operating time delay accuracy

(Inverse-time characteristics) ≤5% of calculated value + 1% current tolerance or 35ms (1.2≤I/Ip≤30) Drop-out time accuracy (Definite-time

Drop-out time accuracy (Inverse-time

characteristics) ≤5% of calculated value or 30ms

2.11.3 Earth Fault Overcurrent Protection (50/51G)

Without direction controlled element

Current setting accuracy ≤1%×Setting or 0.01In, whichever is greater

Operating time delay accuracy

(Definite-time characteristics) ≤1%×Setting or 25ms (at 2 times current setting)

Operating time delay accuracy

(Inverse-time characteristics) ≤5% of calculated value + 1% current tolerance or 35ms (1.2≤I/Ip≤30) Drop-out time accuracy (Definite-time

Drop-out time accuracy (Inverse-time

characteristics) ≤5% of calculated value or 30ms

With direction controlled element

Current setting accuracy ≤1%×Setting or 0.01In, whichever is greater

Voltage setting accuracy ≤1%×Setting or 0.1V, whichever is greater

Operating time delay accuracy

(Definite-time characteristics) ≤1%×Setting or 40ms (at 2 times current setting)

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