Schneider Electric Compact NSX User Manual

Download

CompactNSX

DOCA0140EN-01 01/2020

Compact NSX

Circuit Breakers and Switch-Disconnectors 100630 A User Guide

01/2020

DOCA0140EN-01

www.se.com

The information provided in this documentation contains general descriptions and/or technical character istics of the performance of the products contained herein. This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications. It is the duty of any such user or integrator to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use thereof. Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information contained herein. If you have any suggestions for improvements or amendments or have found errors in this publication, please notify us.

You agree not to reproduce, other than for your own personal, noncommercial use, all or part of this document on any medium whatsoever without permission of Schneider Electric, given in writing. You also agree not to establish any hypertext links to this document or its content. Schneider Electric does not grant any right or license for the personal and noncommercial use of the document or its content, except for a non-exclusive license to consult it on an "as is" basis, at your own risk. All other rights are reserved.

All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to help ensure compliance with documented system data, only the manufacturer should perform repairs to components.

When devices are used for applications with technical safety requirements, the relevant instructions must be followed.

Failure to use Schneider Electric software or approved software with our hardware products may result in injury, harm, or improper operating results.

2 DOCA0140EN-01 01/2020

Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

About the Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 1 Compact NSX Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Compact NSX Circuit Breaker Presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EcoStruxure Power Commission Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

De-Energizing the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Circuit Breaker With Toggle Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Face Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening, Closing, and Resetting the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Locking the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Circuit Breaker With Rotary Handle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Face Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening, Closing, and Resetting the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing a Circuit Breaker With Direct Rotary Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Locking a Circuit Breaker With Direct Rotary Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing a Circuit Breaker With Extended Rotary Handle. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Locking a Circuit Breaker With Extended Rotary Handle . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Motor-Operated Circuit Breakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Face Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening, Closing, and Resetting a Circuit Breaker With Motor Mechanism . . . . . . . . . . . . .

Opening, Closing, and Resetting Circuit Breakers With Communicating Motor Mechanism.

Locking the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2 Compact NSX Installation Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Plug-in Circuit Breaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Withdrawable Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3 Compact NSX Electrical Auxiliary Devices . . . . . . . . . . . . . . . . . . . . . . . . . 65

Electrical Auxiliary Device Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Indication Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SDx Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SDTAM Module (Micrologic 2 M and 6 E-M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BSCM Breaker Status Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NSX Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Insulated NSX Cord. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Auxiliaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4 Compact NSX Trip Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

4.1 Fault Currents and Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fault Currents in Electrical Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protection Against Overcurrents in Electrical Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protection Against Ground Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protection for Motor-Feeders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 11 17 19 20 22 24 25 26 28 29 31 32 34 36 37 40 42 44 45 47 50 51

54 58 64

66 70 71 74 76 79 81 83

86 87 88 89 91 93

DOCA0140EN-01 01/2020 3

4.2 TM-D, TM-G Thermal-Magnetic and MA Magnetic Trip Units . . . . . . . . . . . . . . . . . . . . . . . .

Thermal-Magnetic Trip Unit Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TM-D Thermal-Magnetic Trip Unit for 1P and 2P Circuit Breakers . . . . . . . . . . . . . . . . . . . .

TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A. . . . . . . . . . . .

TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80 A to 250 A . . . .

TM-G Thermal-Magnetic Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MA Magnetic Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Vigi Earth-Leakage Protection Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Vigi Earth-Leakage Protection Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4 Micrologic Electronic Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Characteristics of Micrologic Electronic Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 2 Electronic Trip Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 4 Electronic Trip Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 1.3 M Electronic Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 2 M Electronic Trip Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 2 G Electronic Trip Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Micrologic 2 AB and 4 AB Electronic Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 5 Maintenance Interfaces for Micrologic Trip Units . . . . . . . . . . . . . . . . . . . . . 137

Micrologic Maintenance Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pocket Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stand-Alone USB Maintenance Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

USB Maintenance Interface Connected to a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 6 Compact NSX Circuit Breakers Operation . . . . . . . . . . . . . . . . . . . . . . . . . 147

Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintaining the Circuit Breaker During Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Responding to a Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix A Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Fixed Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Plug-in / Withdrawable Circuit Breakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SDx Module With Micrologic 2, 4, 5, 6, and 7 Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SDTAM Module With Micrologic M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix B Additional Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Compact NSX100-250 - Distribution Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX100-250 - Motor-Feeder Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX400-630 - Distribution Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX400-630 - Motor-Feeder Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX100-630 - Reflex Tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compact NSX100-630 - Limitation Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

96 97

99 100 101 104 106 108 108 111 112 118 122 127 129 132 134

138 139 141 144

148 153 155 157

159

162 165 170 172 174

178 184 185 186 187 188 191

4 DOCA0140EN-01 01/2020

Safety Information

Important Information

NOTICE

Read these instructions carefully, and look at the equipment to become familiar with the device before trying to install, operate, service, or maintain it. The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

PLEASE NOTE

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

A qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and its installation, and has received safety training to recognize and avoid the hazards involved.

DOCA0140EN-01 01/2020 5

CYBERSECURITY SAFETY NOTICE

POTENTIAL COMPROMISE OF SYSTEM AVAILABILITY, INTEGRITY, AND CONFIDENTIALITY

 Change default passwords at first use to help prevent unauthorized access to device settings,

controls, and information.

 Disable unused ports/services and default accounts to help minimize pathways for malicious

attackers.

 Place networked devices behind multiple layers of cyber defenses (such as firewalls, network

segmentation, and network intrusion detection and protection).

 Use cybersecurity best practices (for example, least privilege, separation of duties) to help prevent

unauthorized exposure, loss, modification of data and logs, or interruption of services.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

6 DOCA0140EN-01 01/2020

At a Glance

Document Scope

Validity Note

About the Book

The aim of this guide is to provide users, installers and maintenance personnel with the technical information needed to operate Compact NSX circuit breakers and switch-disconnectors in compliance with the IEC/EN standards.

This guide applies to Compact NSX circuit breakers and switch-disconnectors. The information contained in this guide is likely to be updated at any time. Schneider Electric strongly

recommends that you have the most recent and up-to-date version available on

electric.com

Title of Documentation Reference Number

Compact NSX & NSXm Catalogue LVPED217032EN Compact NSX Micrologic 5/6/7 Electronic Trip Units - User Guide DOCA0141EN

Compact NSX - Modbus Communication Guide DOCA0091EN

Enerlin'X IO - Input/Output Application Module for One IEC Circuit Breaker - User Guide

Enerlin'X IFE - Ethernet Interface for One IEC Circuit Breaker - User Guide

ULP System (IEC Standard) - User Guide DOCA0093EN

DOCA0141ES DOCA0141FR DOCA0141ZH

DOCA0091ES DOCA0091FR DOCA0091ZH

DOCA0055EN DOCA0055ES DOCA0055FR DOCA0055ZH

DOCA0084EN DOCA0084ES DOCA0084FR DOCA0084ZH

DOCA0093ES DOCA0093FR DOCA0093ZH

www.schneider-

You can download these technical publications and other technical information from our website at https://www.se.com/ww/en/download/ .

Trademark Notice

All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.

DOCA0140EN-01 01/2020 7

8 DOCA0140EN-01 01/2020

CompactNSX Compact NSX Circuit Breakers DOCA0140EN-01 01/2020

Compact NSX Circuit Break ers

Chapter 1

Compact NSX Circuit Breakers

What Is in This Chapter?

This chapter contains the following sections:

Section Topic Page

1.1 Compact NSX Circuit Breaker Presentation 10

1.2 Circuit Breaker With Toggle Handle 24

1.3 Circuit Breaker With Rotary Handle 31

1.4 Motor-Operated Circuit Breakers 44

DOCA0140EN-01 01/2020 9

Compact NSX Circuit Breakers

CompactNSX Circuit Breaker Presentation

Section 1.1

Compact NSX Circuit Breaker Presentation

What Is in This Section?

This section contains the following topics:

Compact NSX Range 11 Operating the Circuit Breaker 17 EcoStruxure Power Commission Software 19 De-Energizing the Circuit Breaker 20 Environmental Conditions 22

Topic Page

DOCA0140EN-01 01/2020

Compact NSX Range

Description

The Compact NSX alternating current (AC) range consists of

 Circuit breakers and switch-disconnectors operating on alternating current:

 1-pole circuit breakers from 16 to 250 A, up to 240 Vac  2-pole circuit breakers from 16 to 160 A, up to 690 Vac  3 and 4-pole circuit breakers and switch-disconnectors from 16 to 630 A, up to 690 Vac

 A set of standard accessories and auxiliaries shared with the Compact NSX DC range

The Compact NSX range covers the following applications:

 Electrical distribution protection  Special protection for receivers (for example, motors, transformers) or generators

The Compact NSX range is compliant with the following standards:

 IEC/EN 60947-2 for circuit breakers  IEC/EN 60947-3 for switch-disconnectors  IEC/EN 60947-2 and IEC/EN 60947-4-1 for motor protection circuit breakers  UL 60947-4-1 for motor protection circuit breakers  CSA-C22.2 No.60947-4-1-14 for motor protection circuit breakers

Convention

In this guide, the term

circuit breaker

Compact NSX Circuit Breakers

covers circuit breakers and switch-disconnectors.

DOCA0140EN-01 01/2020 11

Compact NSX Circuit Breakers

Fixed Circuit Breaker

A Sealable terminal shields B Interphase barriers C BSCM module D Indication contact E Voltage release F SDTAM module G SDx module H NSX cord

I Motor mechanism J Extended rotary handle K Direct rotary handle L Terminal extensions M Rear connectors N Cable connectors O One-piece spreader P Toggle handle

DOCA0140EN-01 01/2020

Withdrawable or Plug-in Circuit Breaker

Compact NSX Circuit Breakers

A Sealable long terminal shields for plug-in base B Interphase barriers C Automatic withdrawable auxiliary connector D Manual auxiliary connector E Chassis side plate for withdrawable circuit breaker F Power connections G Power connections for circuit breaker with Vigi module

H Circuit-breaker side plate I Circuit-breaker plug-in base J Lugs K Rear connectors L Terminal extensions M Cable connectors N Rear connectors O Adapter

DOCA0140EN-01 01/2020 13

Compact NSX Circuit Breakers

Trip Units and Trip Unit Accessories

A TM-D, TM-G, or MA trip unit B Micrologic 1 or 2 trip unit C Micrologic 5 or 6 trip unit D Vigi module for additional earth-leakage

protection

E Micrologic 4 trip unit with earth-leakage

protection

F Micrologic 7 trip unit with earth-leakage

protection

DOCA0140EN-01 01/2020

Identification

Compact NSX Circuit Breakers

The faceplate on the front of the circuit breaker identifies the circuit breaker and its characteristics. The faceplate depends on the breaking performances:

Dial Settings

A Device size and rated current B Ui: rated insulation voltage C Uimp: rated impulse withstand voltage D Ics: rated service short-circuit breaking capacity E Icu: rated ultimate short-circuit breaking capacity F Ue: rated operational voltage G Type of device: circuit breaker or switch-disconnector, suitable for isolation H Standards I Color code indicating breaking performance

NOTE: R, HB1, and HB2 breaking performances are not compatible with Micrologic 4 and 7 trip units. NOTE: For extended rotary handles, open the door to view the faceplate label.

The dial positions on the front of the trip unit set the circuit breaker pickup settings. Example 1: TM-D thermal-magnetic trip unit

A Setting range for TM-D

thermal-magnetic trip unit

B Adjustment dial for the

thermal protection pickup Ir

C Adjustment dial for the

magnetic protection pickup Im (for TM-D 200/250 only)

DOCA0140EN-01 01/2020 15

Compact NSX Circuit Breakers

Example 2: Micrologic 2 and Micrologic 4 electronic trip units

Trip Unit Settings

For Micrologic 5, 6, and 7 electronic trip units, read all settings on the display unit. For more information, refer to

A Trip unit adjustment range B Adjustment dials for the

long-time protection pickup Io and Ir

C Adjustment dial for the

short-time protection pickup Isd

D Adjustment dial for the

earth-leakage current pickup IΔn

E Adjustment dial for the

earth-leakage time delay Δt

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic Trip Units - User Guide

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

Operating the Circuit Breaker

Circuit Breaker Operating Control Accessories

The following table shows the operating control accessories compatible with the Compact NSX circuit breakers. For more information, refer to

Operating control accessory NSX100 NSX160 NSX250 NSX400 NSX630

1P 2P 3P/4P 1P 2P 3P/4P 1P 2P 3P/4P 3P/4P 3P/4P Toggle handle ✔ ✔ ✔ ✔ ✔ ✔ ✔ – ✔ ✔ ✔ Rotary handle – – ✔ – – ✔ – – ✔ ✔ ✔ Motor mechanism – – ✔ – – ✔ – – ✔ ✔ ✔ Communicating motor

mechanism

––✔ ––✔ ––✔ ✔ ✔

Handle Position

The handle position indicates the state of the circuit breaker:

Toggle handle Rotary handle Motor mechanism

Compact NSX & NSXm Catalogue

 I (ON): Circuit breaker closed.

Closed manually.

 O (OFF): Circuit breaker open.

Opened manually.

 Trip or Tripped: Circuit breaker tripped.

Tripped by the protection (trip unit or trip auxiliaries), the push-to-trip button, or the USB maintenance interface.

Load Indication

Circuit breakers equipped with a Micrologic trip unit provide precise information of the state of the circuit breaker or the installation. This information can be used for the management and maintenance of the installation.

For example, if the pre-alarm or alarm indicator is lit, performing load shedding may prevent tripping due to circuit breaker overload.

A The Ready LED (green) blinks slowly when the electronic trip unit is ready to provide protection. B The overload pre-alarm LED (orange) shows a steady light when the load exceeds 90% of the Ir setting. C The overload alarm LED (red) shows a steady light when the load exceeds 105% of the Ir setting.

 I (ON): Circuit breaker closed (in Auto or Manu

mode).

 O (OFF): Circuit breaker open or tripped (in

Auto or Manu mode).

Remote Indication

Information is available remotely:

 From the indication contacts  By using a communication network

These indication auxiliaries can be installed on site. For more information about the remote indication and communication options, refer to the summary tables

of auxiliaries

User Guide

DOCA0140EN-01 01/2020 17

(see page 66)

and to

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic Trip Units -

Compact NSX Circuit Breakers

Remote Electrical Stop Command

The remote electrical stop command can be given by electrical control auxiliaries regardless of the control type in use.

To obtain a remote electrical stop command, use:

 An MX shunt trip release, or  An MN undervoltage trip release, or  An MN undervoltage trip release with time-delay unit (the time-delay unit overcomes the problem of

micro-cuts). For more information about the electrical control auxiliaries, refer to the relevant topic NOTE: It is advisable to test operation of the remote electrical stop commands at regular intervals (every

six months).

(seepage83)

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

EcoStruxure Power Commission Software

Overview

EcoStruxure

EcoStruxure Power Commission software helps you to manage a project as part of testing, commissioning,

and maintenance phases of the project life cycle. The innovative features in it provide simple ways to

configure, test, and commission the smart electrical devices.

EcoStruxure Power Commission software automatically discovers the smart devices and allows you to add

the devices for an easy configuration. You can generate comprehensive reports as part of Factory

Acceptance Test and Site Acceptance Test to replace your heavy manual work. Additionally, when the

panels are under operation, any change of settings made can be easily identified by a yellow highlighter.

This indicates the difference between the project and device values, and hence provides a system

consistency during the operation and maintenance phase.

EcoStruxure Power Commission software enables the configuration of the following circuit breakers,

modules, and accessories:

Circuit breaker ranges Modules Accessories Masterpact MTZ circuit breakers

 Masterpact NT/NW circuit breakers  Compact NS circuit breakers  PowerPact P- and R-frame circuit breakers

 Compact NSX circuit breakers  PowerPact H-, J- and L-frame circuit

breakers

(1) For FDM121 display, only the firmware and language download are supported.

Power Commission is the new name of Ecoreach software.

 Micrologic X control unit  Communication interface modules: IFM

interface, IFE interface, IFE server, and EIFE interface

 ULP modules: IO module

 Micrologic trip units  Communication interface modules: BCM

module, CCM module, BCM ULP module, IFM interface, IFE interface, IFE server

 ULP modules: IO module, FDM121 display

 Micrologic trip units  Communication interface modules: BSCM

(1)

module, IFM interface, IFE interface, IFE server

 ULP modules: IO module, FDM121 display

(1)

M2C output module

M2C and M6C output modules

SDTAM and SDx output modules

Key Features

For more information, refer to the

EcoStruxure Power Commission Online Help

EcoStruxure Power Commission software is available at

www.se.com

EcoStruxure Power Commission software performs the following actions for the supported devices and

modules:

 Create projects by device discovery

 Save the project in the EcoStruxure Power Commission cloud for reference

 Upload settings to the device and download settings from the device

 Compare the settings between the project and the device

 Perform control actions in a secured way

 Generate and print the device settings report

 Perform a communication wiring test on the entire project and generate and print test report

 View the communication architecture between the devices in a graphical representation

 View the measurements, logs, and maintenance information

 Export Waveform Capture on Trip Event (WFC)

 View the status of device and IO module

 View the alarm details

 Buy, install, remove, or retrieve the Digital Modules

 Check the system firmware compatibility status

 Update to the latest device firmware

 Perform force trip and automatic trip curve tests

DOCA0140EN-01 01/2020 19

Compact NSX Circuit Breakers

De-Energizing the Circuit Breaker

Isolation Capacity

Compact NSX circuit breakers offer positive contact indication and are suitable for isolation in accordance with standards IEC/EN 60947-1 and 2. The O (OFF) position of the actuator is sufficient to isolate the circuit breaker concerned.

The following marking on the faceplate label indicates that the circuit breaker is capable of isolation:

To confirm this capability, standards IEC/EN 60947-1 and 2 require specific shock withstand tests. Compact NSX circuit breakers can be locked in the O (OFF) position to allow work to be carried out with

the power off in accordance with installation rules. The circuit breaker can only be locked in the open position if the circuit breaker is in the O (OFF) position.

NOTE: Locking a Compact NSX circuit breaker in the open position is sufficient to isolate the circuit breaker.

The locks depend on the type of actuator:

 For circuit breakers with toggle handles, refer to the locking accessories  For circuit breakers with rotary handles, refer to how to lock the circuit breaker with direct rotary handle

(see page 37)

 For circuit breakers with motor mechanisms, refer to how to lock the circuit breaker

Maintenance and Servicing Work on Installation

and how to lock the circuit breaker with extended rotary handle

(see page 29)

(see page 42)

(see page 51)

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E or CSA Z462 or local equivalent.

 This equipment must only be installed and serviced by qualified electrical personnel.  Turn off all power supplying this equipment before working on or inside equipment.  Always use a properly rated voltage sensing device to confirm that power is off.  Replace all devices, doors, and covers before turning on power to this equipment.  Repair the installation immediately if an insulation fault occurs during operation.

Failure to follow these instructions will result in death or serious injury.

Turn off all power supplying the equipment before working on or inside equipment. For a partial powering down of the installation, the installation and safety rules require clearly labeling and isolating the feed being worked on.

Maintenance Work Following Fault Trip

HAZARD OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream

electrical equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage.

DANGER

WARNING

The fact that a protection has tripped does not remedy the cause of the fault detected on the downstream electrical equipment.

The following table describes the procedure to be followed after a fault trip:

Step Action

1 Isolate the feed before inspecting the downstream electrical equipment. 2 Look for the cause of the detected fault. 3 Inspect and, if necessary, repair the downstream equipment. 4 Inspect the equipment in the event of a short-circuit trip. 5 Close the circuit breaker again.

DOCA0140EN-01 01/2020

For more information about troubleshooting and restarting following a fault, refer to what to do in the event

of a trip

Checking the Settings

Checking settings does not require any particular precautions. The checks must be carried out by a

qualified person.

Testing the Circuit Breaker

HAZARD OF NUISANCE TRIPPING Protection tests must be done by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

When testing circuit breaker trip mechanisms, precautions must be taken:

 To avoid disrupting operations.

 To avoid inappropriate actions or tripping of alarms.

For example, tripping the circuit breaker with the push-to-trip button or the LTU test software can lead to

inappropriate fault indications or corrective actions (such as switching to a replacement power source).

(see page 155)

Compact NSX Circuit Breakers

CAUTION

Setting the Trip Unit

WARNING

HAZARD OF NUISANCE TRIPPING OR FAILURE TO TRIP Protection setting adjustments must be done by qualified electrical personnel. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Modifying trip unit settings requires a thorough knowledge of the installation and safety rules.

DOCA0140EN-01 01/2020 21

Compact NSX Circuit Breakers

Environmental Conditions

Ambient Temperature

The ambient temperature refers to the temperature of the air immediately surrounding the circuit breaker.

 Operation temperature

 –25 to +70 °C (–13 to +158 °F): Normal operating temperature

NOTE: The minimum operating temperature for the earth-leakage fault indicator on the Micrologic 4 trip unit is -15 °C (5°F). Between -15 and -5 °C (5 and 23 °F), and when operating the device with an earth leakage fault and a very low load compared to the trip unit rating In, the earth leakage indicator may not work correctly (fault indication or reset).

 –35 to –25 °C (–31 to –13 °F): Commissioning possible  Storage temperature

 –50 to +85 °C (–58 to +185 °F): Without Micrologic trip unit

 –40 to +85 °C (–40 to +185 °F): With liquid crystal Micrologic trip unit

Extreme Atmospheric Conditions

Compact NSX circuit breakers are designed to operate in industrial atmospheres as defined in standard IEC/EN 60947-2 for the highest level of pollution (level 3).

They are tested for extreme storage conditions according to the following standards:

Standard Title IEC/EN 60068-2-2 Dry heat, severity level +85 °C (+185 °F) IEC/EN 60068-2-1 Dry cold, severity level –55 °C (–67 °F) IEC/EN 60068-2-30 Damp heat, cyclic

IEC/EN 60068-2-52 Salt-mist test

To obtain the best use from the circuit breakers, install them in properly ventilated switchboards where excessive dust is not a problem.

Vibration

Compact NSX circuit breakers are tested against vibration.

 temperature +55 °C (+131 °F)  relative humidity 95 %

Conformity tests are carried out in accordance with standard IEC/EN 60068-2-6 at the levels of severity required by the merchant shipping regulatory bodies (IACS, Veritas, Lloyd namely):

 2 Hz to 13.2 Hz with an amplitude of +/- 1 mm (+/- 0.04 in)  13.2 Hz to 100 Hz at a constant acceleration of 0.7 g

DOCA0140EN-01 01/2020

Electromagnetic Disturbances

Compact NSX circuit breakers are immune to electromagnetic disturbance.

They comply with the requirements of the electromagnetic compatibility (EMC) standard:

Standard Title IEC/EN 60947-2 appendixes F and J Overcurrent protection tests IEC/EN 60947-2 appendixes B and J Specific tests for earth-leakage protection

Check for compliance with EMC standards by testing for immunity to:

 Overvoltages produced by the operation of electromagnetic switchgear.

 Overvoltages produced by atmospheric disturbance that pass through the electrical network (for

example, lightning).

 The use of apparatus emitting radio waves (such as radio transmitters, walkie-talkies, or radar).

 Electrostatic discharges produced by the operators themselves.

Conformity with EMC standards as described above helps to ensure that:

 The circuit breaker operates correctly in a disturbed environment:

 Without nuisance tripping.  In accordance with the trip time.

 There is no disturbance to any type of industrial or commercial environment.

Compact NSX Circuit Breakers

Altitude

Compact NSX circuit breakers are designed to operate within specification at altitudes of up to 2,000 m

(6,600 ft).

Above 2,000 m (6,600 ft) modifying the characteristics of the surrounding air (dielectric strength, cooling

capacity) causes derating as follows:

Altitude (m/ft) < 2,000 m

(6,600 ft) Maximum operating voltage (V) 690 590 520 460 Rated thermal current (A) at 40 °C (104 °F) In 0.96 x In 0.93 x In 0.9 x In

3,000 m (9,800 ft)

4,000 m (13,000 ft)

5,000 m (16,500 ft)

DOCA0140EN-01 01/2020 23

Compact NSX Circuit Breakers

Circuit Breaker With Toggle Handle

Section 1.2

Circuit Breaker With Toggle Handle

What Is in This Section?

This section contains the following topics:

Front Face Description 25 Opening, Closing, and Resetting the Circuit Breaker 26 Testing the Circuit Breaker 28 Locking the Circuit Breaker 29

Topic Page

DOCA0140EN-01 01/2020

Front Face Description

Front Face

Compact NSX Circuit Breakers

A Faceplate B Toggle handle for opening, closing, and resetting C Push-to-trip button D Trip unit setting range E Trip unit F Trip unit adjustment dials

For more information about trip units, refer to the related description

(see page 85)

DOCA0140EN-01 01/2020 25

Compact NSX Circuit Breakers

Opening, Closing, and Resetting the Circuit Breaker

Opening and Closing Locally

 To close the circuit breaker, move the toggle handle from the O(OFF) position to the I(ON) position.  To open the circuit breaker, move the toggle handle from the I(ON) position to the O (OFF) position.

Resetting After a Trip on Electrical Fault

The circuit breaker has tripped on electrical fault, the toggle handle has moved from the I(ON) position to the Trip position.

WARNING

HAZARD OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream

electrical equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The fact that a circuit breaker has tripped does not remedy the cause of the fault detected on the downstream electrical equipment.

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

To reset after a fault trip:

Step Action Position

1 – Isolate the feed (refer to maintenance and servicing

work on installation inspecting the downstream electrical equipment.

2 – Look for the cause of the detected fault.

3 – Inspect and, if necessary, repair the downstream

equipment.

4 – Inspect the equipment in the event of a short-circuit

trip.

5 Reset the circuit breaker by moving the toggle

handle to O(OFF).

(see page 20)

) before

O (OFF)

6 Close the circuit breaker by moving the toggle

handle to I(ON).

I(ON)

DOCA0140EN-01 01/2020 27

Compact NSX Circuit Breakers

Testing the Circuit Breaker

Push-to-Trip Procedure

CAUTION

HAZARD OF NUISANCE TRIPPING Circuit breaker tests must only be done by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

When testing the trip mechanism take precautions against:

 Disrupting operations  Activating inappropriate alarms  Triggering unwanted actions

For example, tripping the circuit breaker with the push-to-trip button can lead to inappropriate fault indications or corrective actions (such as switching to an alternate power source).

Follow these steps to test the trip mechanism:

Step Action Position

1 Close the circuit breaker. I (ON)

2 Press the push-to-trip button to trip the

circuit breaker.

3 Move the toggle handle to the

O(OFF) position to reset the circuit breaker.

4 Move the toggle handle to the I(ON)

position to close the circuit breaker.

O(OFF)

I(ON)

DOCA0140EN-01 01/2020

Locking the Circuit Breaker

Locking Accessories

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH When the circuit breaker toggle handle is locked in the (O) OFF position, always use a properly rated

voltage sensing device to confirm that power is off before working on equipment. Failure to follow these instructions will result in death or serious injury.

Use locking accessories to lock the toggle handle in the I(ON) or O (OFF) position.

Accessory Padlocks

Compact NSX Circuit Breakers

DANGER

Accessory that is part of the case Use up to 3 padlocks (not supplied) 5–8 mm

(0.2–0.3 in) in diameter

Accessory that is detachable Use up to 3 padlocks (not supplied) 5–8 mm

NOTE: Locking the toggle handle in the I(ON) position does not disable the circuit breaker protection functions. If there is an electrical fault, the circuit breaker trips without altering its performance. When unlocked, the toggle handle moves to the Trip position. To return the circuit breaker to service, refer to how to open, close, and reset the circuit breaker

(see page 26)

(0.2–0.3 in) in diameter

DOCA0140EN-01 01/2020 29

Compact NSX Circuit Breakers

Sealing Accessories

Use sealing accessories to prevent circuit breaker operations.

Seal Prohibited operations

Escutcheon mounting screw

 Dismantling the escutcheon  Accessing the auxiliaries  Dismantling the trip unit

Transparent protective cover

 Altering trip unit settings  Accessing the test port for the trip

units

Mounting screw for terminal shields Accessing the power connection

(protection against direct contact)

DOCA0140EN-01 01/2020

Circuit Breaker With Rotary Handle

Section 1.3

Circuit Breaker With Rotary Handle

What Is in This Section?

This section contains the following topics:

Front Face Description 32 Opening, Closing, and Resetting the Circuit Breaker 34 Testing a Circuit Breaker With Direct Rotary Handle 36 Locking a Circuit Breaker With Direct Rotary Handle 37 Testing a Circuit Breaker With Extended Rotary Handle 40 Locking a Circuit Breaker With Extended Rotary Handle 42

Compact NSX Circuit Breakers

Topic Page

DOCA0140EN-01 01/2020 31

Compact NSX Circuit Breakers

Front Face Description

Front Face with Direct Rotary Handle

The circuit breaker operating controls, operation indicators, settings, and locking mechanisms for the direct rotary handle are on the front of the circuit breaker.

There are two models of rotary handle:

 Black handle for standard applications  Red handle on yellow bezel for machine control applications

A Faceplate B Direct rotary handle for opening, closing, and

resetting C Push-to-trip button D Trip unit E Trip unit adjustment dials

For more information about trip units, refer to the related description

(see page 85)

DOCA0140EN-01 01/2020

Front Face with Extended Rotary Handle

For circuit breakers with an extended rotary handle:

 The circuit breaker operating controls are on the door escutcheon.  The operation indicators and settings are only accessible when the door is open  The locking mechanisms are on the circuit breaker (optional) and on the door escutcheon (door closed)

(see page 42)

There are two models of extended rotary handle:

 Black handle for standard applications  Red handle on yellow bezel for machine control applications

Cabinet door open Cabinet door closed

Compact NSX Circuit Breakers

A Faceplate B Open door shaft operator C Push-to-trip button D Trip unit E Trip unit adjustment dials F Extended rotary handle for opening, closing, and resetting

For more information about trip units, refer to the related description

(see page 85)

DOCA0140EN-01 01/2020 33

Compact NSX Circuit Breakers

Opening, Closing, and Resetting the Circuit Breaker

Opening and Closing Locally

 To close the circuit breaker, turn the rotary handle clockwise from the O (OFF) position to the I(ON)

position.

 To open the circuit breaker, turn the rotary handle counterclockwise from the I(ON) position to the

O(OFF) position.

Resetting After a Trip on Electrical Fault

The circuit breaker has tripped on electrical fault, the rotary handle has moved from the I(ON) position to the Trip position.

WARNING

HAZARD OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream

electrical equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The fact that a circuit breaker has tripped does not remedy the cause of the fault detected on the downstream electrical equipment.

To reset after a fault trip:

Step Action Position

1 – Isolate the feed

equipment. 2 – Look for the cause of the detected fault. Trip 3 – Inspect and, if necessary, repair the downstream equipment. Trip 4 – Inspect the equipment in the event of a short-circuit trip. Trip

(see page 20)

before inspecting the downstream electrical

Trip

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

Step Action Position

5 Reset the circuit breaker by turning the rotary handle counterclockwise from

O(OFF)

the Trip position to O(OFF).

6 Close the circuit breaker by turning the rotary handle clockwise to I(ON). I(ON)

DOCA0140EN-01 01/2020 35

Compact NSX Circuit Breakers

Testing a Circuit Breaker With Direct Rotary Handle

Push-to-Trip Procedure

CAUTION

HAZARD OF NUISANCE TRIPPING Circuit breaker tests must only be done by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

When testing the trip mechanism, take precautions against:

 Disrupting operations  Activating inappropriate alarms  Triggering unwanted actions

For example, tripping the circuit breaker with the push-to-trip button can lead to inappropriate fault indications or corrective actions (such as switching to an alternate power source).

Follow these steps to test the trip mechanism:

Step Action Comment

1 Close the circuit breaker. I (ON)

2 Press the push-to-trip button: the

circuit breaker trips.

3 Turn the rotary handle

counterclockwise to the O(OFF) position. The circuit breaker is open.

4 Turn the rotary handle clockwise from

the O(OFF) position to the I(ON) position. The circuit breaker is closed.

Trip

O(OFF)

I (ON)

DOCA0140EN-01 01/2020

Locking a Circuit Breaker With Direct Rotary Handle

Locking Accessories

Lock handle with up to three padlocks (not supplied) or a keylock.

Accessory Padlocks

Padlocking (standard) only in the O(OFF) position. Lock handle with up to three padlocks (not

supplied) with shackle diameters of 5–8 mm (0.2–

0.3 in).

Compact NSX Circuit Breakers

Padlocking (after modification to the rotary handle during installation) in the two positions I(ON) and O(OFF).

Keylocking with a Profalux® or Ronis® lock (optional). The circuit breaker can be locked in the O(OFF) position only or in the O(OFF) and I(ON) position, depending on the bolt chosen.

Lock handle with up to three padlocks (not supplied) with shackle diameters of 5–8 mm (0.2–

0.3 in).

A Profalux or Ronis lock can be installed on site. Keylocking can be used at the same time as padlocking.

NOTE: Locking the rotary handle in the I(ON) position does not disable the circuit breaker protection functions. If there is an electrical fault, the circuit breaker still trips. When unlocked, the handle moves to the Trip position. To return the circuit breaker to service, follow the resetting instructions

(see page 34)

Door Locking (MCC Function)

Further options are offered with the direct rotary handle in the MCC function. When the circuit breaker is in the I(ON) position, the direct rotary handle locks the door in the closed

position.

DOCA0140EN-01 01/2020 37

Compact NSX Circuit Breakers

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Only qualified persons are authorized to disable the door lock. Failure to follow these instructions will result in death or serious injury.

Temporarily disable this lock to open the door when the circuit breaker is in the I(ON) position.

Disabling this lock requires modifying the rotary handle. Refer to the instruction sheets on the Schneider Electric website:



GHD16292AA



GHD16320AA

If the lock has been disabled, the following direct rotary handle functions are inoperative:

 Door locking  Preventing the circuit breaker from being closed when the door is open

DANGER

, Direct rotary handle for Compact NSX100-250 , Direct rotary handle for Compact NSX400-630

Preventing Circuit Breaker Closing When the Door Is Open

The door locking device can also help to prevent the direct rotary handle from being moved to the I(ON) position when the door is open.

Sealing Accessories

Use sealing accessories to prevent circuit breaker operations.

Seal Prohibited operations

Escutcheon mounting screw

Transparent protective cover

 Dismantling the escutcheon  Accessing the auxiliaries  Dismantling the trip unit

 Altering trip unit settings  Accessing the test port for the trip units

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

Seal Prohibited operations

Mounting screw for terminal shields Accessing the power connection (protection

against direct contact)

DOCA0140EN-01 01/2020 39

Compact NSX Circuit Breakers

Testing a Circuit Breaker With Extended Rotary Handle

Push-to-Trip Procedure

CAUTION

HAZARD OF NUISANCE TRIPPING Circuit breaker tests must only be done by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

When testing the trip mechanism take precautions against:

 Disrupting operations  Activating inappropriate alarms  Triggering unwanted actions

For example, tripping the circuit breaker with the push-to-trip button can lead to inappropriate fault indications or corrective actions (such as switching to an alternate power source).

There is no push-to-trip button on the door of a circuit breaker with a front extended rotary handle. To check the trip mechanism, the door must first be opened.

Follow these steps to test the trip mechanism:

Step Action Position

1 Switch the circuit breaker to the open O(OFF) position. Open the door. O(OFF)

2 Turn the circuit breaker from the O(OFF) position to the I(ON) position,

using one of the following tools:

 An open door shaft operator (LV426937).  A flat wrench, taking care not to damage the extension shaft or its

surface treatment.The extension shaft is a hollow rectangular tube,15 x 10 mm (0.59 x 0.39 in).

The circuit breaker is ready for the test.

3 Press the push-to-trip button. The circuit breaker trips. Trip

4 Use a special tool (refer to step 2) to turn the extension shaft

counterclockwise and switch the circuit breaker from the Trip position to the O(OFF) position. The circuit breaker is in the open position.

I(ON)

O(OFF)

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

Step Action Position

5 Close the door. –

DOCA0140EN-01 01/2020 41

Compact NSX Circuit Breakers

Locking a Circuit Breaker With Extended Rotary Handle

Locking Accessories

The extended rotary handle offers several locking functions to:

 Prevent the rotary handle being operated.  Prevent the door being opened.

Some locking functions can be disabled on different adaptations. The handle can be locked with up to three padlocks (not supplied) or keylock.

Accessory Padlocks

Padlocking (standard) in the O (OFF) position. Padlocking the rotary handle in the O(OFF) position does not prevent the door from opening.

Lock rotary handle with up to three padlocks (not supplied) with shackle diameters of 5– 8 mm (0.2–0.3 in).

Padlocking (after modification to the rotary handle during installation) in the two positions I(ON) and O(OFF). There is a choice of two options when locking the rotary handle in the I(ON) position:

 Standard with the door opening locked.  As an option, door is not interlocked, and

locking the rotary handle does not stop the door from opening.

Keylocking with a Profalux® or Ronis® lock (optional). The lock is mounted on the case inside the switchboard. Lock the circuit breaker in the O(OFF) position only or in the O(OFF) and I(ON) positions depending on the bolt chosen.

Lock rotary handle with up to three padlocks (not supplied) with shackle diameters of 5– 8 mm (0.2–0.3 in).

A Profalux or Ronis lock can be installed on site. Keylocking can be used at the same time as padlocking.

NOTE: Locking the rotary handle in the I(ON) position does not disable the circuit breaker protection functions. If there is an electrical fault, the circuit breaker still trips. When unlocked, the rotary handle moves to the Trip position. To return the circuit breaker to service, follow the resetting instructions

(see page 34)

Door Locking (MCC Function)

The extended rotary handle locks the door in the I(ON) position as standard.

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Only qualified persons are authorized to disable the door lock. Failure to follow these instructions will result in death or serious injury.

Temporarily disable this lock to open the door when the circuit breaker is in the I(ON) position.

Disabling this lock requires modifying the rotary handle. Refer to the instruction sheets on the Schneider Electric website:



GHD16292AA



GHD16320AA

Example: An application includes a circuit breaker for a switchboard incoming supply and several receiver circuit breakers with extended rotary handles installed behind the same door. Locking the door with a single rotary handle (incoming supply circuit breaker) simplifies maintenance work on the switchboard.

, Extended rotary handle for Compact NSX100-250

, Extended rotary handle for Compact NSX400-630

Key-Operated Locking Procedure

Keylocking can be done with circuit breaker in either the O (OFF) position or the I(ON) position.

Step Action (circuit breaker in the O (OFF) position) Action (circuit breaker in the I (ON) position)

1 Open the door. Open the door by disabling the door locking device if necessary. 2 Use the keylock mounted on the case inside the switchboard to

lock the rotary handle.

3 Close the door. Close the door, disabling the door locking device if necessary.

Use the keylock mounted on the case inside the switchboard to lock the rotary handle.

Sealing Accessories

The sealing accessories for circuit breakers with extended rotary handles are identical to those for circuit breakers with direct rotary handles

(see page 37)

DOCA0140EN-01 01/2020 43

Compact NSX Circuit Breakers

Motor-Operated Circuit Breakers

Section 1.4

Motor-Operated Circuit Breakers

What Is in This Section?

This section contains the following topics:

Front Face Description 45 Opening, Closing, and Resetting a Circuit Breaker With Motor Mechanism 47 Opening, Closing, and Resetting Circuit Breakers With Communicating Motor Mechanism 50 Locking the Circuit Breaker 51

Topic Page

DOCA0140EN-01 01/2020

Front Face Description

Front Face

The main controls, operation indicators, settings, and locking mechanisms are on the front of an electrically-operated circuit breaker (with motor mechanism).

Compact NSX Circuit Breakers

A Faceplate B Charging handle C Keylocking in O(OFF) position (option available for Compact NSX400-630 only) D Sealing accessory E Main contacts position indicator F Spring-charged and ready-to-close indicator G Padlocking in O(OFF) position H Closing (I(ON)) and opening (O(OFF)) pushbuttons I Manual/automatic operating mode selector J Trip unit

Main Contacts Position Indicator

Indicator Description

NOTE: Use the SD or SDE auxiliary contact to distinguish the Trip position from the O (OFF) position.

Spring-Charged and Ready-to-Close Indicator

Indicator Description

The circuit breaker is closed.

The circuit breaker is open or tripped.

Closing spring charged

Closing spring discharged

NOTE: The closing spring only provides the necessary energy for circuit breaker closing. The circuit breaker mechanism supplies the energy for tripping.

DOCA0140EN-01 01/2020 45

Compact NSX Circuit Breakers

Manu/Auto Selector

The Manu/Auto button selects the operating mode:

 In automatic operating mode, only electrical commands are executed.  In manual operating mode, all electrical commands are disabled.

DOCA0140EN-01 01/2020

Opening, Closing, and Resetting a Circuit Breaker With Motor Mechanism

Introduction

The motor mechanism can open and close a circuit breaker remotely with electrical commands. There are many applications:

 Automation of electrical distribution to optimize operating costs  Normal/standby source changeover: changes over to a replacement source to improve continuity of

service

 Load shedding/reconnection to optimize tariff-based contracts

CAUTION

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT Do not modify the wiring diagrams for the motor mechanism. Failure to follow these instructions can result in injury or equipment damage.

Compact NSX Circuit Breakers

Wire the motor mechanism in strict accordance with the motor mechanism wiring diagram in the Appendix

(see page 161)

In automatic operating mode, wiring the SDE contact helps to prevent the circuit breaker from resetting automatically on an electrical fault. For more information about the SDE contact, refer to the indication contacts

(seepage70)

Manual Operation: Opening, Closing, and Resetting Locally

Move the selector to the Manu position. Cycle of operation:

Manual Operation Description

Check that the spring-charged indicator is on charged (A). If not, reset the circuit breaker.

Step Action Comment

Close the circuit breaker by pressing the closing pushbutton .

2 Open the circuit breaker by pressing the opening pushbutton .When the circuit breaker is open:

3 Reset the circuit breaker: recharge the closing spring by operating

the charging handle (eight times).

DOCA0140EN-01 01/2020 47

When the circuit breaker is closed:

 The contact position indicator (B) changes to

I(ON).

 The spring-charged indicator (C) changes to

discharged.

 The contact position indicator (D) changes to

O(OFF).

 The spring-charged indicator (E) stays on

discharged.

When the circuit breaker is ready to be closed:

 The contact position indicator (F) stays on

O(OFF).

 The spring-charged indicator (A) changes to

charged.

Compact NSX Circuit Breakers

Automatic Operation: Opening, Closing, and Resetting Remotely

Move the selector to the Auto position. Cycle of operation:

Automatic Operation Description

Step Action Comment

1 Close the circuit breaker by sending a close (ON) command. When the circuit breaker is closed:

2 Open the circuit breaker by sending an open (OFF) command. When the circuit breaker is open:

3 Recharge the stored energy control by using one of the three reset

modes, depending on the wiring diagram:

 Automatic reset  Remote reset by using the pushbutton  Manual reset by operating the charging handle

 The contact position indicator (A) changes to

I(ON).

 The spring-charged indicator (B) changes to

discharged.

 The contact position indicator (C) changes to

O(OFF).

 The spring-charged indicator (D) stays on

discharged.

The circuit breaker is ready to be closed:

 The contact position indicator (E) stays on

O(OFF).

 The spring-charged indicator (F) changes to

charged.

Resetting After a Trip on Electrical Fault

Resetting after a trip on electrical fault can only be done locally. When operating in automatic mode, return to manual operation to reset the circuit breaker.

HAZARD OF CLOSING ON ELECTRICAL FAULT Do not close the circuit breaker again without first inspecting and, if necessary, repairing the downstream

electrical equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The fact that a protection has tripped the circuit breaker does not remedy the cause of the fault detected on the downstream electrical equipment.

WARNING

DOCA0140EN-01 01/2020

Compact NSX Circuit Breakers

To reset after a fault trip:

Step Action

1 Isolate the feed

(see page 20)

2 With selector on Manu, operate the charging handle 8 times to reset the circuit breaker in ready-to-close position.

Result: The spring-charged indicator changes to charged (B) and the internal mechanism goes from the Trip position to the

O(OFF) position (A). 3 Lock the circuit breaker. 4 Look for the cause of the detected fault. 5 Inspect and, if necessary, repair the downstream equipment. 6 Inspect the equipment in the event of a short-circuit trip. 7 Reset and close the circuit breaker.

before inspecting the downstream electrical equipment.

DOCA0140EN-01 01/2020 49

Compact NSX Circuit Breakers

Opening, Closing, and Resetting Circuit Breakers With Communicating Motor Mechanism

Introduction

Manage the communicating motor mechanism with the communication network. For this function, it is necessary to:

 Install a Breaker Status Control Module (BSCM)  Use a communicating motor mechanism.

(see page 77)

and the NSX cord

(see page 79)

Connect the BSCM module to the communication network with the NSX cord:

 To receive closing, opening, and reset commands.  To transmit the circuit breaker states: O(OFF), I(ON), Tripped by SDE.

NOTE: The communicating motor mechanism has a specific reference. For more information, refer to

Compact NSX & NSXm Catalogue

The BSCM module can be configured using EcoStruxure Power Commission software.

(see page 19)

The schematic for the communicating motor mechanism in the BSCM module can be configured. It must be created in strict accordance with the simplified schematic shown in the appendix

(see page 170)

CAUTION

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT Do not modify the wiring diagrams for the motor mechanism. Failure to follow these instructions can result in injury or equipment damage.

Manual Operation: Opening, Closing, and Resetting Locally

The process is the same as the standard motor mechanism.

Automatic Operation: Opening, Closing, and Resetting Remotely

The process is the same as the standard motor mechanism.

Resetting After a Trip on Electrical Fault

Without modifying the factory configuration, the process is the same as the standard motor mechanism

(see page 48)

Reconfiguration of the BSCM module using EcoStruxure Power Commission software authorizes remote resetting after a trip on electrical fault on a circuit breaker with communicating motor mechanism.

(see page 78)

DOCA0140EN-01 01/2020

Locking the Circuit Breaker

Locking Accessories

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH When the circuit breaker toggle handle is locked in the (O) OFF position, always use a properly rated

voltage sensing device to confirm that power is off before working on equipment. Failure to follow these instructions will result in death or serious injury.

Lock the mechanism with up to three padlocks (not supplied) or a keylock. Both locking methods can be used at the same time.

Step Action Comment Result

1 Switch the circuit breaker to the

O (OFF) position.

2 Pull out the tab –

–

Compact NSX Circuit Breakers

3 Lock the tab using:

 Up to three padlocks 5-8 mm (0.2-

0.3 in) in diameter.

 A keylock (optional).

The circuit breaker is locked. No commands in Auto mode or Manu mode are executed.

Sealing Accessories

Use sealing accessories to prevent circuit breaker operations.

Seal Prohibited operations

Motor mechanism mounting screw

Transparent cover for the motor mechanism

 Dismantling the escutcheon  Accessing the auxiliaries  Dismantling the trip unit

Accessing the manual/automatic selector (depending on its position,

manual operation

(1)

operation is disabled).

, or automatic

Transparent protective cover for the trip units

Altering any settings and accessing the test port.

(1) In this case no local operations are possible.

DOCA0140EN-01 01/2020 51

Compact NSX Circuit Breakers

Seal Prohibited operations

Mounting screw for terminal shields Accessing the power connection

(protection against direct contact)

(1) In this case no local operations are possible.

DOCA0140EN-01 01/2020

CompactNSX CompactNSX Installation Accessories DOCA0140EN-01 01/2020

Compact NSX Instal lation Accessories

Chapter 2

Compact NSX Installation Accessories

What Is in This Chapter?

This chapter contains the following topics:

Plug-in Circuit Breaker 54 Withdrawable Circuit Breaker 58 Accessories 64

Topic Page

DOCA0140EN-01 01/2020 53

Compact NSX Installation Accessories

Plug-in Circuit Breaker

Introduction

Plug-in base circuit breakers make it possible to:

 Extract and/or rapidly replace the circuit breaker without having to touch the connections on the base  Allow for the addition of future circuits by installing bases that will be equipped with a circuit breaker at

a later date

 Isolate the power circuits when the circuit breaker is mounted on or through a panel. It acts as a barrier

for the connections of the plug-in base. Insulation is made complete by the mandatory short terminal shields on the circuit breaker

The following types of circuit breaker can be installed in a plug-in base:

 3P and 4P circuit breakers  Circuit breakers with toggle handle, direct rotary handle, or extended rotary handle  Motor-operated circuit breakers  Circuit breakers with Vigi module

The plug-in circuit breaker is made up of the fixed circuit breaker and a plug-in kit, which includes:

 Plug-in base  Power connections  Short terminal shields  Safety trip interlock

Disconnecting the Circuit Breaker

(see page 56)

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalent.

 This equipment must only be installed and serviced by qualified electrical personnel.  The circuit breaker must be in the O (OFF) position.  Do not use tools to disconnect or connect the circuit breaker.

Failure to follow these instructions will result in death or serious injury.

Follow this procedure to disconnect the circuit beaker:

Step Action

1 Switch the circuit breaker to the O(OFF) position.

2 Remove both mounting screws.

DOCA0140EN-01 01/2020

Step Action

3 Pull out the circuit breaker, keeping it horizontal.

NOTE:

 The auxiliary circuits automatically disconnect because of the connectors located on the base and at

the rear of the circuit breaker.

 Open the circuit breaker before disconnecting it. If the circuit breaker is in the closed I(ON) position

when disconnecting, a pre-trip mechanism trips the circuit breaker before the pins are disconnected.

Connecting the Circuit Breaker

Compact NSX Installation Accessories

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalent.

Failure to follow these instructions will result in death or serious injury.

Follow this procedure to connect the circuit beaker:

Step Action

1 Switch the circuit breaker to the O(OFF) position.

2 Connect the circuit breaker.

DOCA0140EN-01 01/2020 55

Compact NSX Installation Accessories

Step Action

3 Replace both mounting screws. Tighten the screws to a

NOTE:

 The auxiliary circuits automatically connect because of the connectors located on the base and at the

rear of the circuit breaker.

 Open the circuit breaker before connecting it. If the circuit breaker is in the closed I(ON) position when

connecting, the pre-trip mechanism trips the circuit breaker before the pins are connected.

Protection Against Direct Contact With Power Circuits

The following table shows plug-in circuit breaker configurations with the corresponding protection indices (IP):

torque of 2.5 N•m (22.1 lb-in).

Configuration Protection

index IP20 Built-in plug-in base:

IP40 Built-in plug-in base and circuit breaker with terminal shields.

Description

 Without circuit breaker  With circuit breaker without terminal shields

IP40 Plug-in base with adapter, terminal shields and blanking plate without

circuit breaker:

 The adapter enables the use of all the connection accessories of the

fixed circuit breaker. It is required to equip the plug-in circuit breaker with long and short terminal shields and interphase barriers.

 Terminal shields are mandatory for plug-in circuit breakers. Short

terminal shields are supplied in the plug-in kit. They can be replaced by long terminal shields available as an option.

 The blanking plate is not supplied by Schneider Electric.

DOCA0140EN-01 01/2020

Compact NSX Installation Accessories

Configuration Protection

index IP40 Plug-in base with adapter and terminal shields, and circuit breaker with

For more information about configurations and installation, consult the instruction sheets on the Schneider Electric website:



GHD16276AA



GHD16316AA

, Plug-in base for Compact NSX100-250 , Plug-in base for Compact NSX400-630

Description

terminal shields.

DOCA0140EN-01 01/2020 57

Compact NSX Installation Accessories

Withdrawable Circuit Breaker

Introduction

In addition to the advantages provided by a plug-in base, installation of the circuit breaker on a chassis facilitates handling. Withdrawable chassis circuit breakers offer three positions, with transfer from one to the other after mechanical unlocking:

 Connected: the power circuits are connected.  Disconnected: the power circuits are disconnected, the circuit breaker can be operated to check

auxiliary operation.

 Removed: the circuit breaker is free and can be removed from the chassis.

The following types of circuit breaker can be installed in a chassis:

 3P and 4P circuit breakers  Circuit breakers with toggle handle, direct rotary handle, or extended rotary handle  Motor-operated circuit breakers  Circuit breakers with Vigi module

The withdrawable circuit breaker is made up of:

 The fixed circuit breaker  A plug-in kit  Two chassis side plates for the plug-in base  Two chassis side plates for the circuit breaker

Disconnecting the Circuit Breaker

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalent.

Failure to follow these instructions will result in death or serious injury.

Follow this procedure to disconnect the circuit breaker:

Step Action

1 Switch the circuit breaker to the O(OFF)

2 Move both locking levers down as far as

position.

they can go.

DOCA0140EN-01 01/2020

Compact NSX Installation Accessories

Step Action

3 Push down both operating handles at the

same time until you hear a double-click from the locking levers (as the locking levers return to their original position). The circuit breaker is disconnected.

NOTE:

 The auxiliary circuits can be:

 Automatically disconnected because of the connectors located on the chassis and at the rear of the

circuit breaker.

 Left connected for a circuit breaker with a manual auxiliary connector.

 Open the circuit breaker before disconnecting it. If the circuit breaker is in the closed I(ON) position

when disconnecting, a safety mechanism ensures that the poles open automatically by tripping the circuit breaker before the pins disconnect.

Removing the Circuit Breaker

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalent.

Failure to follow these instructions will result in death or serious injury.

Follow this procedure to remove the circuit breaker:

Step Action

1 Move both locking levers down.

DANGER

2 Push down both operating handles as far as

DOCA0140EN-01 01/2020 59

the next notch.

Compact NSX Installation Accessories

Step Action

3 Remove the circuit breaker, keeping it

Connecting the Circuit Breaker

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

 Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See

NFPA 70E, CSA Z462, NOM-029-STPS, or local equivalent.

Failure to follow these instructions will result in death or serious injury.

horizontal.

DANGER

Follow this procedure to connect the circuit breaker:

Step Action

1 Switch the circuit breaker to the open

O(OFF) position. Move both operating handles down to the low position on the chassis. Push in the circuit breaker until the locking levers clicks.

2 Move both locking levers forward.

DOCA0140EN-01 01/2020

Step Action

3 Raise both locking levers at the same time.

NOTE: Open the circuit breaker before connecting it. If the circuit breaker is in the closed I(ON) position when connecting, a mechanism opens the poles automatically by tripping the circuit breaker before the pins connect.

Withdrawable Circuit Breaker Protection Against Direct Contact With Power Circuits

The following table shows withdrawable circuit breaker configurations with the corresponding protection indices (IP):

Compact NSX Installation Accessories

Configuration Protection

index IP20 Built-in chassis:

IP40 Built-in chassis and circuit breaker with terminal shields.

Description

 Without circuit breaker  With circuit breaker without terminal shields

IP40 Chassis with adapter, terminal shields and blanking plate without circuit

breaker:

 The adapter enables the use of all the connection accessories of the

withdrawable circuit breaker. It is required to equip the withdrawable circuit breaker with long and short terminal shields and interphase barriers.

 Terminal shields are mandatory for withdrawable circuit breakers. Short

terminal shields are supplied in the plug-in kit. They can be replaced by long terminal shields available as an option.

 The blanking plate is not supplied by Schneider Electric.

DOCA0140EN-01 01/2020 61

Compact NSX Installation Accessories

Configuration Protection

index IP40 Chassis with adapter and terminal shields, and circuit breaker with terminal

Description

shields.

For more information about configurations and installation, consult the instruction sheets on the Schneider Electric website:



GHD16277AA



GHD16317AA

, Chassis side plates for Compact NSX100-250 , Chassis side plates for Compact NSX400-630

Auxiliary Circuit Test with Circuit Breaker Disconnected (Optional)

The auxiliary circuit test function is possible with circuit breakers which have manual auxiliary connectors.

In the disconnected position, operate the circuit breaker (by the actuator or push-to-trip button) to check whether the auxiliary circuits are working correctly.

Disconnect the manual auxiliary connector (if the circuit breaker has one) before removing the circuit breaker.

Carriage Switches (Optional)

Two changeover contacts can be installed on the chassis:

A Connected-position carriage switch (CE) B Disconnected-position carriage switch (CD)

For more information about contact operation, refer to control auxiliaries Carriage switches, in conjunction with the IO module, provide the chassis management function, which is

used to:

 Record and check the position of the moving part of the withdrawable circuit breaker in the chassis  Provide information about preventive maintenance actions  Notify the remote controller about the position of the withdrawable circuit breaker.

For more information about the chassis management function, refer to

Input/Output Application Module for One IEC Circuit Breaker - User Guide

(seepage83)

DOCA0055EN, Enerlin'X IO -

DOCA0140EN-01 01/2020

Locking the Chassis

Compact NSX Installation Accessories

The operating handle can be locked with up to four padlocks (not supplied) or keylock.

Illustration Description

Lock the circuit breaker in disconnected position using up to four padlocks (not supplied) with a shackle diameter of 5–8 mm (0.2–0.3 in) to prevent connection.

Lock the circuit breaker using a keylock (optional) in the connected position when the locking kit accessory is installed.

Lock the circuit breaker using a keylock (optional) in the disconnected position when the locking kit accessory is installed.

For more information about the accessory offer, refer to

Compact NSX & NSXm Catalogue

DOCA0140EN-01 01/2020 63

Compact NSX Installation Accessories

Accessories

Accessories for Compact NSX Circuit Breakers

A comprehensive accessory offer is available for Compact NSX circuit breakers. Accessories can be installed on site to improve safety and ease of operation.

Sealed boot for the toggle handle, providing IP43 protection on the front

For more information about the accessory offer, refer to

Terminal Shields with Precut Grids

1 Cutting a grid 2 Adjusting the size of the grid 3 Inserting the grid in the terminal shield

Terminal shields with precut grids simplify the onsite connection of circuit breakers regardless of the number of conductors to be connected. The procedure for installing precut guides is described in the following instruction sheets on the Schneider Electric website:



GHD16242AA



GHD16243AA

Short or long terminal shields, providing IP40 protection

, Compact NSX100–250 , Compact NSX400–630

Flexible interphase barriers improving isolation between power connections

Compact NSX & NSXm Catalogue

DOCA0140EN-01 01/2020

CompactNSX CompactNSX Electrical Auxiliary Devices DOCA0140EN-01 01/2020

CompactNSX Electrical Auxiliary Devices

Chapter 3

Compact NSX Electrical Auxiliary Devices

What Is in This Chapter?

This chapter contains the following topics:

Electrical Auxiliary Device Summary 66 Indication Contacts 70 SDx Module 71 SDTAM Module (Micrologic 2 M and 6 E-M) 74 BSCM Breaker Status Control Module 76 NSX Cord 79 Insulated NSX Cord 81 Control Auxiliaries 83

Topic Page

DOCA0140EN-01 01/2020 65

Compact NSX Electrical Auxiliary Devices

Electrical Auxiliary Device Summary

Electrical Auxiliary Devices

The following table shows the electrical auxiliary devices that can be added to the Compact NSX circuit breakers. For more information, refer to

Electrical auxiliary device NSX100 NSX160 NSX250 NSX400 NSX630

1P 2P 3P/4P 1P 2P 3P/4P 1P 3P/4P 3P/4P 3P/4P OF or SD auxiliary contact – ✔ ✔ – ✔ ✔ – ✔ ✔ ✔ SDE auxiliary contact – – ✔ – – ✔ – ✔ ✔ ✔ SDx module ––✔ ––✔ –✔ ✔ ✔ SDTAM module – – ✔ – – ✔ – ✔ ✔ ✔ MN undervoltage trip release – ✔ ✔ – ✔ ✔ – ✔ ✔ ✔ MX shunt trip release – ✔ ✔ – ✔ ✔ – ✔ ✔ ✔ BSCM breaker status control

mode NSX cord ––✔ ––✔ –✔ ✔ ✔

––✔ ––✔ –✔ ✔ ✔

Slots for Electrical Auxiliary Devices on Compact NSX100/160 2P Circuit Breakers

The following table shows the possible slots for electrical auxiliary devices mounted in the case. Only one auxiliary device can be installed per slot. For more information, refer to

Compact NSX & NSXm Catalogue

Name Slot

A B C OF1 ✔ – – SD – ✔ – MN – – ✔ MX – – ✔

Slots for Electrical Auxiliary Devices on Compact NSX100-250 3P/4P Circuit Breakers

The following table shows the possible slots for electrical auxiliary devices mounted in the case. Only one auxiliary device can be installed per slot. For more information, refer to

Compact NSX & NSXm Catalogue

DOCA0140EN-01 01/2020

Compact NSX Electrical Auxiliary Devices

Name Slot Comments

A B C D E F Standard remote indication and control auxiliaries OF1 ✔ – – – – – For all trip unit types and control types (toggle handle, rotary OF2 –––✔–– SD –✔–––– SDE ––✔––– SDV – – – – – ✔ Indication contact in Vigi module MN – – – – ✔ – For all trip unit types and control types (toggle handle, rotary MX ––––✔– Remote indication on communication network BSCM – – ✔ ✔ – – For connection of the BSCM module to the communication NSX cord –✔–––– NSX cord – – – ✔ – – For connection of the Micrologic 5, 6, and 7 trip units to the

Specific remote indication with Micrologic trip units SDx ✔ – – – ✔ – Including SDV for Micrologic 4 and 7 trip units. SDTAM ✔ – – – ✔ – Only for circuit breakers with a Micrologic 2 M or 6 E-M trip unit

24 Vdc power supply terminal block – – – ✔ – – Only for Micrologic 5, 6, and 7 trip units.

handle, or motor mechanism).

network.

communication network when no BSCM module is installed.

designed to protect motors.

NOTE: It is not possible to install all the accessories at the same time on one trip unit. For example, the SDx remote indication option cannot be installed at the same time as an MN or MX release and the OF1 contact.

Slots for Electrical Auxiliary Devices on Compact NSX400-630 3P/4P Circuit Breakers

Compact NSX400-630 circuit breakers are exclusively equipped with Micrologic trip units. The following table shows the possible slots for the electrical auxiliary devices mounted in the case. For

more information, refer to

Name Slot Comments

A B C D E F G H I Standard remote indication and control auxiliaries OF1 ––✔–––––– OF2 – ✔ – – – – – – – For all trip unit types and control types OF3 ✔–––––––– OF4 ––––––✔–– SD ––––––––✔ SDE –––––––✔– SDV – – – – – ✔ – – – Indication contact in Vigi module

Compact NSX & NSXm Catalogue

(toggle handle, rotary handle, or motor mechanism).

DOCA0140EN-01 01/2020 67

Compact NSX Electrical Auxiliary Devices

Name Slot Comments

A B C D E F G H I MN – – – – ✔ – – – – For all trip unit types and control types MX ––––✔––––

(toggle handle, rotary handle, or motor

mechanism). Remote indication on communication network BSCM – – – – – – ✔ ✔ – For connection of the BSCM module to the NSX cord ––––––✔––

communication network.

NSX cord – – – – – – – – ✔ For connection of the Micrologic 5, 6, and 7

trip units to the communication network

when no BSCM module is installed. Specific remote indication with Micrologic trip units SDx – – – ✔ ✔ – – – – Including SDV for Micrologic 4 and 7 trip

units. SDTAM –––✔✔––––– 24 Vdc power supply terminal

– – – – – – ✔ – – Only for Micrologic 5, 6, and 7 trip units.

block

NOTE: It is not possible to install all the accessories at the same time on one trip unit. For example, the SDx remote indication option cannot be installed at the same time as an MN or MX release.

Operation of the Auxiliary Indication Contacts

The following table shows the position of the indication contacts (or outputs) relative to the position of the actuator and main contacts.

Position of the actuator and the main contacts

Tripped by: OFF MN/MX

(1)

Trip unit

(2)

L S or So I R G Name Position of indication contacts OF ✔–––––––– SD – ✔✔✔✔✔✔✔– SDE –––✔✔✔✔✔– SDV ––––––✔––

SDx outputs

(3)

SD2SDT –––✔––––– SD4PAL –––✔–––––

SDG–––––––✔–

SDV ––––––✔–– SDTAM outputs SD2 Early SD4 Contactor control

make/break

SDT

–––✔✔–––––

✔: Contact closed, ✔✔: Early-make output (400 ms) (1) PT: Push-to-trip

(2) L: Long-time protection S or So: Short-time protection I: Instantaneous protection R: Vigi protection (earth-leakage) G: Ground-fault protection (3) SDx output assignment can be customized for Micrologic 5, 6, and 7 trip units, by using EcoStruxure Power Commission software.

DOCA0140EN-01 01/2020

Compact NSX Electrical Auxiliary Devices

NOTE: The indication auxiliary (changeover) contacts are represented in the switchboard by the state of the Normally Open (NO) contact. The state of the NO contact is open:

 for OF contacts when the circuit breaker is in the O(OFF) position.  for SD, SDE, and SDV contacts when the associated function is not active.

Sequence chart of the OF contacts relative to the main contacts

A Main contacts B Position of OF changeover contacts

DOCA0140EN-01 01/2020 69

Compact NSX Electrical Auxiliary Devices

Indication Contacts

Introduction

One indicator contact model provides OF, SD, SDE, and SDV indication functions. The position of the contact inside the case determines the function.

Indication contacts are either under the front face of the circuit breaker, under the motor mechanism, or in the rotary handle. Installation is in a compartment isolated from the power circuits. There are two types:

 Standard contact  Low-level contact

Standard and Low-Level Contacts

Standard and low-level contacts are the common point changeover type.

NC Normally Closed contact NO Normally Open contact

The following table describes the operation of standard and low-level volt-free contacts:

Name Definition OF auxiliary

Changeover: The NO contact is normally open when the circuit breaker is in the O(OFF) position.

contact SD auxiliary

contact

SDE auxiliary contact

SDV auxiliary contact

Trip indication: The SD contact indicates that the circuit breaker has tripped due to:

 Long-time protection  Short-time protection  Ground-fault protection  Earth-leakage protection (trip by Micrologic 4 or 7 trip unit, or by Vigi module)  Operation of the MX or MN voltage releases  Operation of the push-to-trip button  Connecting/Disconnecting the circuit breaker  Manually opening the motor mechanism

Electrical fault indication: The SDE contact indicates that the circuit breaker has tripped on an electrical fault due to:

 Long-time protection  Short-time protection  Ground-fault protection  Earth-leakage protection (trip by Micrologic 4 or 7 trip unit, or by Vigi module)

Earth-leakage fault indication: The SDV contact indicates that the circuit breaker has tripped due to an earth-leakage fault detected by the earth-leakage protection of the Vigi module.

NOTE: Use the SDx module to indicate an earth-leakage fault detected by a Micrologic 4 or 7 or Micrologic 4 AL or 7 AL trip

unit.

DOCA0140EN-01 01/2020

SDx Module

Introduction

Description

Compact NSX Electrical Auxiliary Devices

An SDx module can be used with Compact NSX circuit breakers equipped with Micrologic trip units. The SDx module receives data from the trip unit through an optical link:

 For Micrologic 2 trip units, one output (non-configurable) for remote monitoring of the thermal trip alarm  For Micrologic 4 trip units, two outputs (non-configurable) for remote monitoring of:

 The thermal trip alarm  The earth-leakage trip alarm

 For Micrologic 5, 6, and 7, two outputs (configurable) for remote monitoring of alarms

Installation

A Output terminal block B SDx module

The slots used to install the SDx module depend on the circuit breaker type.

Compact NSX100-250 Compact NSX400-630

The SDx module cannot be installed at the same time as an MN/MX release and OF contact.

DOCA0140EN-01 01/2020 71

Compact NSX Electrical Auxiliary Devices

Connection

Connect the SDx module and the outputs in strict accordance with the wiring diagram.

Micrologic 2 Micrologic 4

Micrologic 5 Micrologic 6 Micrologic 7

The characteristics of the SDx module outputs are:

 Voltage: 24–415 Vac/Vdc  Current:

 Active outputs: 80 mA maximum  Idle outputs: 0.25 mA

Output Assignment Factory Setting

The functions offered by the SDx module outputs depend on the type of trip unit installed with the module

Micrologic Output 1 (SD2/OUT1) Output 2 (SD4/OUT2) 2 Thermal fault indication alarm (SDT) Not available 4 Thermal fault indication alarm (SDT) Earth-leakage fault indication alarm (SDV) 5 Thermal fault indication alarm (SDT) Long-time pre-alarm (PAL Ir).

6 Thermal fault indication alarm (SDT) Ground-fault indication alarm (SDG) 7 Thermal fault indication alarm (SDT) Earth-leakage fault indication alarm (SDV)

Alarm activated as soon as the current in the load reaches 90% Ir.

NOTE: Outputs SDT, SDG, and SDV return automatically to their initial state when the circuit breaker closes.

DOCA0140EN-01 01/2020

Reconfiguring the SDx Module Outputs

Use EcoStruxure Power Commission software to reconfigure the assignment of SDx output 1 (SD2/OUT1) and output 2 (SD4/OUT2), when they are used with Micrologic 5, 6, and 7 trip units.

For more information about the list of alarms and configuration options using EcoStruxure Power Commission software, refer to

Guide

The operating mode of the outputs can be configured:

 Without latching  With latching (the return to the initial state takes place by acknowledging the latched output using the

communication network or the Micrologic keypad)

 Time-delayed without latching (the return to the initial state takes place at the end of the time delay)  Forced to the closed state (the return to the initial state takes place by acknowledging the latched output

using the communication network or the Micrologic keypad)

 Forced to the open state (the return to the initial state takes place by acknowledging the latched output

using the communication network or the Micrologic keypad)

Compact NSX Electrical Auxiliary Devices

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic Trip Units - User

DOCA0140EN-01 01/2020 73

Compact NSX Electrical Auxiliary Devices

SDTAM Module (Micrologic 2 M and 6 E-M)

Introduction

An SDTAM module can be used with circuit breakers with a Micrologic 2 M or 6 E-M trip unit designed to protect motors.

The SDTAM module receives data from the Micrologic trip unit through an optical link and makes available two outputs assigned to manage tripping due to overload.

Description

A Output terminals B SDTAM module C Operating mode adjustment dial

Installation

Connection

The slots used to install the SDTAM module depend on the circuit breaker type.

Compact NSX100-250 Compact NSX400-630

The SDTAM module cannot be installed at the same time as an MN/MX release and OF contact.

Connect the SDTAM module and the two outputs in strict accordance with the wiring diagram.

The characteristics of the SDTAM module outputs are:

 Voltage: 24–415 Vac/Vdc  Current:

 Active outputs: 80 mA maximum  Idle outputs: 0.25 mA

DOCA0140EN-01 01/2020

Output Assignment

Contactor Control

Compact NSX Electrical Auxiliary Devices

Output 1 (SD2/OUT1): normally open, indicates thermal faults. Output 2 (SD4/OUT2): normally closed, opens the contactor KM. Outputs are activated 400 ms before the circuit breaker trips in the case of:

 Long-time protection  Phase-unbalance protection  Locked rotor protection (Micrologic 6 E-M)  Undercurrent protection (Micrologic 6 E-M)

Contactor control by the output 2 signal (SD4/OUT2) optimizes continuity of service and provides the following additional benefits:

 Lower risk of motor deterioration.  Activation of the output indicates that the application is not working normally. Abnormal operation is not

the result of an anomaly or internal fault in the motor-feeder.

 The cause of this abnormal operation can be temporary (for example, a voltage drop causing an overly

long starting time). When the cause of the overload or unbalance has disappeared, the equipment can be powered up again. NOTE: To control a contactor with a consumption exceeding 80 mA, it is necessary to provide an interface

(RBN or RTBT relay).

Operating Mode

The SDTAM module incorporates an operating mode adjustment dial:

To return the outputs to their initial state following activation:

 Manual (SDTAM dial in the OFF position) after canceling the module power supply  Automatic (SDTAM dial on one of the time delay adjustment settings) following a time delay (set from 1

to 15 minutes to allow for the motor cooling time).

DOCA0140EN-01 01/2020 75

Compact NSX Electrical Auxiliary Devices

BSCM Breaker Status Control Module

Introduction

The BSCM Breaker Status Control Module can be used to send the following data via the communication network:

 Circuit breaker states from OF, SD, and SDE auxiliary contacts  Control instructions for the communicating motor mechanism (if present): opening, closing, and

resetting

 Information to assist the operator: storage of the last 10 events

Use the BSCM module with all Compact NSX circuit breakers equipped with thermal-magnetic and Micrologic electronic trip units and with all Compact NSX switch-disconnectors.

Installation of the BSCM module requires:

 The NSX cord  Pre-installation of the communicating motor mechanism (if present)

For more information about integrating Compact NSX circuit breaker communication functions, refer to:



DOCA0093EN, ULP System (IEC Standard) - User Guide



DOCA0091EN, Compact NSX - Modbus Communication Guide

Description

Marker Data medium Data transmitted Comments A BSCM module

microswitches

B Connector for the NSX cord Communication network and state of SD

C Connector for the

Micrologic 5, 6, or 7 trip units

D Connector for the

communicating motor mechanism

State of OF and SDE contacts The BSCM module takes the place of the auxiliary

contacts in the OF and SDE slots.

The NSX cord goes in the SD slot instead of the contact through the microswitch on the NSX cord

Communication network Only with Micrologic 5, 6, or 7 trip units

Controlling the communicating motor mechanism Status of the communicating motor mechanism

auxiliary contact.

Use the connector supplied with the communicating

motor mechanism.

DOCA0140EN-01 01/2020

Installing the BSCM Module

The slots used to install the BSCM module depend on the circuit breaker type.

Compact NSX100-250 Compact NSX400-630

A BSCM module B NSX cord

The BSCM module cannot be installed at the same time as an OF contact or the SDE contact. The BSCM module can be installed on site.

Connecting the BSCM Module

To install the BSCM module:

 Plug in the module.  Connect the 4 connectors.

Compact NSX Electrical Auxiliary Devices

Setting Up the BSCM Module

Setting up the BSCM module on the communication network requires no addressing.

LED Indication on BSCM Module

The LED on the BSCM module is only visible when the front of the case is removed. Use the LED indication on the BSCM module to confirm that the BSCM module is working during commissioning or maintenance operations.

ULP LED Mode Action

Nominal None

Conflict Remove extra ULP

Degraded Replace BSCM module

Test None

Non-critical firmware discrepancy

Non-critical hardware discrepancy

Configuration discrepancy

Critical firmware discrepancy

Critical hardware discrepancy

Stop Replace BSCM module

module

at the next maintenance operation

Upgrade firmware at the next maintenance operation

Replace BSCM module at the next maintenance operation

Install missing features

Use EcoStruxure Power Commission software to check the firmware and hardware compatibility and follow the recommended actions

Power off Check power supply

DOCA0140EN-01 01/2020 77

Compact NSX Electrical Auxiliary Devices

Data Provided by the BSCM Module

Configuration Information Can be

reset

All circuit breakers with BSCM module Count of the total number of times the circuit breaker opens and closes (count of

Circuit breakers with BSCM module and communicating motor mechanism

(1) The user can modify the content of the counter if, for example, the BSCM module is installed or replaced during operation. (2) Overshooting the threshold results in a medium priority alarm. To acknowledge the alarm, modify the content of the counter or the value of the threshold.

OF contact operations). This counter (totalizer) cannot be reset.

Count of the total number of times the circuit breaker opens and closes (count of OF contact operations)

Maximum number of times the circuit breaker can open and close Count of the number of fault trips by the circuit breaker (count of SD contact

operations) Count of the number of electrical fault trips by the circuit breaker (count of SDE

contact operations)

Count of the number of times the communicating motor mechanism opens

Count of the number of times the communicating motor mechanism closes

Maximum number of times the communicating motor mechanism closes

Count of the number of times the communicating motor mechanism resets

(1)

(2)

(1)

(2)

Yes

(1)

Yes

(1)

Yes

Configuring the BSCM Module

To configure the BSCM module, use a PC running EcoStruxure Power Commission software and connected to the USB maintenance interface.

The USB maintenance interface must be connected:

 To the RJ45 connector of a ULP module (for example, IFM Modbus-SL interface).  To the test port of Micrologic 5, 6, and 7 trip units.

With EcoStruxure Power Commission software, you can configure:

 The maximum number of times the circuit breaker can open and close.  The maximum number of times the communicating motor mechanism can close.  The reset mode of the communicating motor mechanism.

Configuring the Resetting of the Communicating Motor Mechanism

HAZARD OF REPEATED CLOSING ON ELECTRICAL FAULT Reconfiguring of the BSCM Breaker Status Control Module must be done only by qualified electrical

personnel. Failure to follow these instructions can result in injury or equipment damage.

The reset mode of the communicating motor mechanism can be configured using the EcoStruxure Power Commission software:

 Enable Reset even if SDE to authorize resetting of the mechanism using the communication network

even after an electrical fault trip.

 Enable Automatic Reset to authorize automatic resetting after tripping by the MN, MX trip release, or

push-to-trip button.

 Enable Reset even if SDE and Enable Automatic Reset to authorize automatic resetting even after an

electrical fault trip.

CAUTION

DOCA0140EN-01 01/2020

NSX Cord

Introduction

Description

Compact NSX Electrical Auxiliary Devices

The NSX cord connects a circuit breaker to the communication network. The NSX cord can be used:

 By itself for communicating measurements and settings (only with Micrologic 5, 6, and 7 trip units)  Or with a BSCM module:

 For communicating measurements and settings (only with Micrologic 5, 6, and 7 trip units)  For communicating states (with standard and advanced trip units)

For more information about integrating Compact NSX circuit breaker communication functions, refer to:



DOCA0093EN, ULP System (IEC Standard) - User Guide



DOCA0091EN, Compact NSX - Modbus Communication Guide

The NSX cord consists of a junction box, a cable equipped with an RJ45 connector, and a cable equipped with a screw terminal block.

No. Data medium Data transmitted Comments A NSX cord microswitch State of SD contact The NSX cord goes into the SD slot instead of the

auxiliary contact.

B Cable equipped with an RJ45 connector for

connection to a ULP module.

C Internal link to the Micrologic 5, 6, or 7 trip unit

or the BSCM module

Communication network Three cable lengths are available: 0.3 m (9.84 ft),

1.3 m (4.27 ft), and 3 m (14.7 ft).

Communication network With the BSCM module, the NSX cord also

transmits the circuit breaker states.

The NSX cord also provides the 24 Vdc power supply:

 For the Micrologic 5, 6, or 7 trip unit (without BSCM module)  For the BSCM module (when this module is installed)

Installation

The slots used to install the NSX cord depend on the circuit breaker type.

NSX cord used alone NSX cord and BSCM module Compact NSX100-250 Compact NSX400-630 Compact NSX100-250 Compact NSX400-630

A NSX cord B BSCM module

The NSX cord cannot be installed at the same time as the SD contact. The NSX cord can be installed on site.

DOCA0140EN-01 01/2020 79

Compact NSX Electrical Auxiliary Devices

Communication with the NSX Cord

The NSX cord connects to the following ULP modules:

 IFM or IFE communication interface  FDM121 display  IO module

The figure below illustrates the connections from the NSX cord to the IFM Modbus-SL interface

Example 1: Connection of the IFM interface to the Micrologic 5, 6, or 7 trip unit

Example 2: Connection of the IFM interface to the BSCM module

A IFM Modbus-SL interface for one circuit breaker B NSX cord C Micrologic 5, 6, or 7 trip unit D BSCM module

Example 3: Connection of the IFM interface to the BSCM module and the Micrologic 5, 6, or 7 trip unit

DOCA0140EN-01 01/2020

Insulated NSX Cord

Introduction

For system voltage greater than 480 Vac, an insulated variant of the NSX cord needs to be used, terminated by an electronic module with a female RJ45 connector. A ULP cord must be used to connect the insulated NSX cord electronic module to a ULP module.

The reference for the insulated NSX cord is LV434204. The insulated NSX cord electronic module must be supplied with 24 Vdc in order to guarantee isolation of

the ULP system.

Electronic Module Characteristics

The following table summarizes the electronic module characteristics:

Characteristic Value Dimensions 27 x 27 x 27 mm Mounting On DIN rail Degree of protection of the installed module

Operating temperature -25 to +70 °C Power supply voltage 24 Vdc -20%/+10% (19.2–26.4 Vdc) Consumption

Compact NSX Electrical Auxiliary Devices

 On the front panel (wall-mounted enclosure): IP40  On the connections (behind the enclosure door): IP20

 Typical: 20 mA/24 Vdc at 20 °C  Maximum: 30 mA/19.2 Vdc at 60 °C

DOCA0140EN-01 01/2020 81

Compact NSX Electrical Auxiliary Devices

Insulated NSX Cord Connection

The NSX cord connects to a ULP module:

 IFM or IFE communication interface  FDM121 display  IO module

The figure below illustrates the connections from the insulated NSX cord to the Modbus-SL interface for one circuit breaker:

A IFM Modbus-SL interface for one circuit breaker B RJ45 male/male ULP cable C Insulated ULP module for system voltage greater than 480 Vac D Insulated ULP cord for system voltage greater than 480 Vac E Connector for Compact NSX circuit breaker internal connection

DOCA0140EN-01 01/2020

Control Auxiliaries

Control and Indication Contacts Installed Outside the Circuit Breaker

Control and indication contacts installed outside the case are contacts for specific applications. Refer to

Compact NSX & NSXm Catalogue

CAM contacts Early-operation contacts

Install in the rotary handle:

 Early-make contacts (CAF1, CAF2) actuate before the poles close when a circuit breaker

manual command is given.

 The early-break changeover contact (CAO1) actuates before the poles open when a

circuit breaker manual command is given.

Carriage switches Connected (CE)/Disconnected (CD) carriage switches

Install on the chassis to indicate the position of the circuit breaker in the chassis: A Connected position carriage switch (CE) B Disconnected position carriage switch (CD)

Operation of connected/disconnected carriage switches

Compact NSX Electrical Auxiliary Devices

CE Connected position carriage switch CD Disconnected position carriage switch

Voltage Trip Releases

Use voltage trip releases to trip circuit breakers deliberately using an electrical signal. Install these auxiliaries in the case under the front face.

The characteristics of these auxiliaries comply with the recommendations of the standard IEC/EN 60947-2.

MN MN undervoltage trip release

This release:

 Trips the circuit breaker when the voltage is less than 0.35 times the rated voltage Un. If the voltage is between

0.35 and 0.7 times the rated voltage Un, tripping is possible but not guaranteed. Above 0.7 times the rated voltage Un, tripping is impossible.

 Closes the circuit breaker again once the voltage reaches 0.85 times the rated voltage.

Use this type of trip release for fail-safe emergency stops.

Time-delay unit Time-delay unit for MN undervoltage trip release

The time-delay unit eliminates nuisance tripping of an undervoltage trip release due to transient voltage dips lasting < 200 ms. There are two types of time-delay units: adjustable or fixed.

MX MX shunt trip release

This release trips the circuit breaker when the voltage exceeds 0.7 times the rated voltage Un.

DOCA0140EN-01 01/2020 83

Compact NSX Electrical Auxiliary Devices

DOCA0140EN-01 01/2020

CompactNSX Compact NSX - Trip Units DOCA0140EN-01 01/2020

CompactNSX Trip Units

Chapter 4

Compact NSX Trip Units

What Is in This Chapter?

This chapter contains the following sections:

Section Topic Page

4.1 Fault Currents and Trip Units 86

4.2 TM-D, TM-G Thermal-Magnetic and MA Magnetic Trip Units 96

4.3 Vigi Earth-Leakage Protection Module 108

4.4 Micrologic Electronic Trip Units 111

DOCA0140EN-01 01/2020 85

Compact NSX - Trip Units

Fault Currents and Trip Units

Section 4.1

Fault Currents and Trip Units

What Is in This Section?

This section contains the following topics:

Applications 87 Fault Currents in Electrical Distribution 88 Protection Against Overcurrents in Electrical Distribution 89 Protection Against Ground Faults 91 Protection for Motor-Feeders 93

Topic Page

DOCA0140EN-01 01/2020

Applications

The Two Main Types of Application Requiring Protection

Compact NSX circuit breaker trip units offer protection for all applications due to the great flexibility of their settings.

Two types of application are taken into consideration:

 Electrical distribution protection  Special protection for receivers (for example, motors, transformers) or generators

Compact NSX - Trip Units

DOCA0140EN-01 01/2020 87

Compact NSX - Trip Units

Fault Currents in Electrical Distribution

The Fault Current Types

There are four types of fault current, divided into two categories:

 The overcurrent category:

 Overload currents  Short-circuit currents

 The ground fault category:

 Low intensity ground faults  High intensity ground faults

The Overcurrent Category

The main characteristics and associated risks are described below:

 Overload currents:

These are mainly due to problems with excessive loads on receivers. For example, operating too many consumers in a workshop at the same time (lighting, heating, power) can bring about an electrical distribution overload. The main risks from overload currents are gradual deterioration in equipment, or a fire.

 Short-circuit currents:

These can be due to deterioration in the plant or within a receiver. For example, a short-circuit between two phases in the winding of a motor being operated in severe conditions (vibration, damp and/or corrosive atmosphere). The risks associated with short-circuit currents are the instantaneous deterioration of equipment, a fire, or even an explosion due to the high energy level at the site of the short-circuit.

The Ground Fault Category

Ground faults can be due to abnormal aging of the plant, of a load or conductors, that have deteriorated in damp conditions.

The intensity of such fault currents depends on the ground connection diagram used. These currents can be:

 Very low in value, that is, well below the rated feed current in the TT system (these are known as

leakage currents or residual ground fault currents).

 High in value, that is, identical to a short-circuit current in the TN-S system (these are known as ground

fault currents).

Whatever the value of ground leakage currents, they present a very grave risk of electrocution or fire.

DOCA0140EN-01 01/2020

Protection Against Overcurrents in Electrical Distribution

Compact NSX Circuit Breaker Overcurrent Trip Units

Compact NSX circuit breaker trip units are designed to handle overcurrents (overload currents and shortcircuit currents) and in certain cases, ground fault currents.

 Pickup adjustments are calculated relative to the downstream circuit to be protected.  Time delay adjustments are calculated in relation to the protection management (coordination).

NOTE: The protection plan is based on coordination of the protections - and in particular on discrimination. This can be achieved by time delays (time-related discrimination) while complying with ammeter- and power-related discrimination rules.

There are two types of trip unit:

 Thermal-magnetic trip units for Compact NSX100-250 circuit breakers  Micrologic electronic trip units for Compact NSX100-630 circuit breakers

Standard Settings for Overcurrent Protections

Standard IEC/EN 60947-2 states the trip characteristics at the circuit breaker limits. The following table summarizes the recommendations of standard IEC/EN 60947-2 for the circuit breaker

protection function:

Protection function Setting recommendations Long-time protection

Short-time protection Short-time protection is

Instantaneous protection Instantaneous protection is

Long-time protection of the

 No trip for a current below 105% of Ir  Trip in less than two hours for a current equal to:

 120% of Ir for an electronic trip unit  130% of Ir for a thermal-magnetic trip unit

For a higher fault current, the trip time is inversely proportional to the fault current value.

 No trip for a current below 80% of the short time setting  Trip for a current equal to 120% of the short time setting

The trip time is:

 Less than 0.2 s for a short time protection with no time delay  Equal to the value of the time delay tsd for a protection with time delay

 No trip for a current below 80% of the instantaneous setting  Trip for a current equal to 120% of the instantaneous setting

The trip time is less than 0.2 s.

inverse time

definite time

type (with I 2t constant):

Compact NSX - Trip Units

The Neutral Conductor

The installation rules closely define the type of protection to be used having regard to:

 Potential overcurrents (overloads and short-circuits).  Conductors to be protected.  Simultaneous cutoff of all conductors including the neutral conductor (multi-pole breaking).

NOTE: All three of the phase conductors must be protected at all times. The neutral conductor (if it is distributed and identical to the phases in size, that is, full neutral) is normally protected by the phase protection.

DOCA0140EN-01 01/2020 89

Compact NSX - Trip Units

Description of the Neutral Protection

The neutral must have specific protection if:

 It is reduced in size compared to the phases.  Nonlinear loads generating third order harmonics and multiples thereof are installed.

It may be necessary to cut off the neutral for functional reasons (multiple source diagram) or safety reasons (working with power off).

To summarize, the neutral conductor can be:

 Non-distributed (3P).  Distributed, not cut off and not protected (3P).  Distributed, not cut off but protected (3P with ENCT option). Refer to

Micrologic 5/6/7 Electronic Trip Units - User Guide

 Distributed, cut off and protected (4P).

DOCA0141EN, Compact NSX

Compact NSX trip units are suitable for all protection types.

Compact NSX Possibilities Neutral protection 3P 3P, 3D None 3P + ENCT 3P, 3D None

3P, 3D + N/2 Half neutral 3P, 3D + N Full neutral

3P, 3D + OSN

(1)

4P 4P, 3D None

4P, 3D + N/2 Half neutral 4P, 4D Full neutral

4P, 4D + OSN

(1)

(1) OSN (OverSized Neutral) protection is used when high third harmonic (and multiples of the third harmonic) currents are present. OSN protection is installed on Micrologic 5, 6, and 7 trip units. Refer to

Guide

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic Trip Units - User

P: Breaking pole, D: Pole protected by the trip unit, N: Neutral protection.

Oversized neutral

DOCA0140EN-01 01/2020

Protection Against Ground Faults

Introduction

Protection against ground faults is provided by:

 Earth-leakage protection in the case of low intensity fault currents (fault current limitation is linked to

ground connection diagram TT or TN-S). Earth-leakage protection is provided by:

 Earth-leakage protection embedded in Micrologic 4 and 7 trip units.  Vigi earth-leakage protection module added to the circuit breaker.

 Ground-fault protection embedded in Micrologic 6 trip units in the case of high intensity fault currents

(this protection can be used only with ground connection diagram TN-S)

Embedded Earth-Leakage Protection

Earth-leakage protection is embedded within the Micrologic 4 and 7 trip units. The maximum value of IΔn depends on the circuit breaker frame size:

Circuit breaker frame size 100 - 250 400 - 630 Maximum value IΔn 5 A 10 A

The range provides two types of device:

 Trip devices trip on an earth-leakage fault  Alarm devices measure and signal an earth-leakage fault without tripping:

 On the front face  Through the SDx output contact

The following illustrations show the two types of Micrologic 4 trip units:

Compact NSX - Trip Units

Micrologic 4 trip Micrologic 4 alarm

For more information about Micrologic 7, refer to

Trip Units - User Guide

Earth-Leakage Protection with Vigi Module

The Vigi module is external to the trip unit and is designed to provide earth-leakage protection for the following situations:

 For system voltages up to 550 Vac  For breaking capacity over 150 kA  For IΔn, pickup can be set over 10 A (Vigi MB only)

The module can be installed on Compact NSX circuit breakers with Micrologic 2 and 5 trip units. Vigi module installed on a Compact NSX circuit breaker

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic

Ground-Fault Protection

Ground-fault protection is embedded in Micrologic 6 trip units. For more information, refer to

DOCA0141EN, Compact NSX Micrologic 5/6/7 Electronic Trip Units - User Guide

DOCA0140EN-01 01/2020 91

Compact NSX - Trip Units

Setting the Earth-Leakage Protection

Installation standards require or recommend particular sensitivity and trip time values for earth-leakage protection:

Type of protection IΔn Δt Installation standards Protection against direct contact ≤ 30 mA

Fire protection ≤ 300 mA or ≤

500 mA

Protection against indirect contact IΔn ≤ 1 s Lowest possible recommended values of IΔn and Δt (the value

(1) Value of Δt for a fault current ≥ 10 IΔn

≤ 40 ms

(1)

Required

Required if necessary

of IΔn depends on the ground resistance)

Setting the Ground-Fault Protection

Installation standards (in particular the NEC - National Electrical Code - defining installation rules in the USA) require or recommend the pickup and trip time values for ground-fault protection.

Location Ig tg NEC On the incoming supply to the low voltage

distribution (and for In > 1,000 A)

Downstream of the low voltage distribution Ig – Lowest possible recommended values for Ig

≤ 1,200 A – Required ≤ 3,000 A ≤ 1 s Required

DOCA0140EN-01 01/2020

Protection for Motor-Feeders

Structure of a Motor-Feeder

Direct-on-line starting is the most widely used type of motor-feeder. The direct-on-line starting motor-feeder can comprise up to four different items of switchgear providing one

or more functions. It must also incorporate the specific characteristics of the application.

A Switchgear for short-circuit protection B Control gear C Switchgear for overload protection D Switchgear for ground-fault protection E Characteristic t = f(I) of an asynchronous D.O.L. starting motor F Starting phase G Current peak on activation

Compact NSX - Trip Units

Characteristics Defined by Standard IEC/EN 60947-4-1

A motor-feeder must satisfy the general rules of standard IEC/EN 60947-4-1, in particular the rules concerning the protection of contactors and motor-feeders.

In the matter of protection, this standard defines:

 Coordination of motor-feeder protections  Thermal relay trip classes  Insulation coordination

Coordination According to Standard IEC/EN 60947-4-1

Two types of coordination are allowed: type 1 coordination or type 2 coordination.

 In type 1 coordination, deterioration of the contactor and relay is accepted under the two following

conditions:

 The contactor or starter does not represent a danger to people or installations.  The starter can operate correctly when parts have been repaired or replaced.

 In type 2 coordination, some slight welding of the contactor or starter contacts is allowed if, following

type 2 coordination tests:

 They are easy to separate  The control and protection switchgear functions then work without the need for repair

To ensure type 2 coordination, standard IEC/EN 60947-4-1 lays down three Id fault current tests intended to check that the equipment behaves correctly in overload and short-circuit conditions.

1 Overload zone Id < 10 In 2 Impedant short-circuit zone 10 In < Id < 50 In 3 Short-circuit zone Id > 50 In

DOCA0140EN-01 01/2020 93

Compact NSX - Trip Units

Thermal Relay Trip Classes

The four thermal relay trip classes are 5, 10, 20 and 30 (values correspond to the maximum relay trip time in seconds at 7.2 In).

Standard trip time values

Class 1.05 In 1.2 In 1.5 In 7.2 In 5 t > 2 hours t > 2 hours t < 2 minutes 0.5 s ≤ t ≤ 5 s 10 t > 2 hours t > 2 hours t < 4 minutes 4 s ≤ t ≤ 10 s 20 t > 2 hours t > 2 hours t < 8 minutes 6 s ≤ t ≤ 20 s 30 t > 2 hours t > 2 hours t < 12 minutes 9 s ≤ t ≤ 30 s

Classes 5 and 10 are most commonly used. Classes 20 and 30 concern applications in which motor starting conditions are difficult.

Additional Protection

Depending on the application and the operating constraints, additional protection may be required concerning:

 Phase unbalance or phase loss  Locked rotor  Undercurrent  Long starts

Compact NSX Motor Circuit Breakers

Compact NSX motor circuit breakers incorporate MA thermal-magnetic trip units and Micrologic type M electronic trip units.

Protection functions by trip unit type

Protection

Overloads – – ✔ ✔ Short-circuits ✔ ✔ ✔ ✔ Insulation faults (ground-fault

protection) Phase unbalance or phase loss – – ✔ ✔ Locked rotor – – – ✔ Undercurrent – – – ✔ Long starts – – – ✔

Trip unit type MA Micrologic 1.3MMicrologic 2 M Micrologic 6 E-M

––– ✔

The protection against insulation faults in the Micrologic 6 E-M trip unit is the ground-fault protection type. Type 1 and 2 coordination tests have been carried out with motor-feeder components in respect of all

Compact NSX motor circuit breakers.

DOCA0140EN-01 01/2020

Trip classes by trip unit type

Class MA Micrologic 1.3 M Micrologic 2 M Micrologic 6 E-M 5––✔✔ 10 – – ✔ ✔ 20 – – ✔ ✔ 30 –––✔

Trip Unit Long-Time Protection

The pickup setting Ir for trip unit long-time protection is expressed in amperes:

 This value corresponds to the operating current used in the motor application  The maximum Ir setting corresponds to the trip unit rating In

Compact NSX - Trip Units

Trip unit type

DOCA0140EN-01 01/2020 95

Compact NSX - Trip Units

TM-D, TM-G Thermal-Mag netic and MA Ma gnetic Trip Units

Section 4.2

TM-D, TM-G Thermal-Magnetic and MA Magnetic Trip Units

What Is in This Section?

This section contains the following topics:

Thermal-Magnetic Trip Unit Summary 97 TM-D Thermal-Magnetic Trip Unit for 1P and 2P Circuit Breakers 99 TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A 100 TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80 A to 250 A 101 TM-G Thermal-Magnetic Trip Unit 104 MA Magnetic Trip Unit 106

Topic Page

DOCA0140EN-01 01/2020

Compact NSX - Trip Units

Thermal-Magnetic Trip Unit Summary

Introduction

Thermal-magnetic trip units are designed to provide protection for distribution or for specific applications.

Identification Type of protection TM-D Thermal-magnetic trip unit TM-G Thermal-magnetic trip unit with low pickup (for protecting generators, very long feeds) MA Magnetic-only trip unit (for example, for protecting motors, transformers)

The following table shows the trip units compatible with the Compact NSX circuit breakers. For more information, refer to

Trip units Built-in / Interchangeable NSX100 NSX160 NSX250 NSX400 NSX630

NA (switch-disconnector) Built-in – – – – – – – ✔ ✔ TM-D Built-in ✔✔– ✔✔– – – – TM-D Interchangeable – – ✔ – – ✔ – – – TM-AC Built-in ––– ––– – ✔ ✔ TM-AC Interchangeable – – ✔ – – ✔ ✔ – – TM-G Interchangeable – – ✔ – – ✔ ✔ – – MA Interchangeable – – ✔ – – ✔ ✔ – –

Compact NSX & NSXm Catalogue

1P 2P 3P/4P 1P 2P 3P/4P 3P/4P 3P/4P 3P/4P

Protections and Settings of Thermal-Magnetic Trip Units

The adjustment dials are on the front of the trip units:

Item Parameter Description

A – Trip unit setting range: minimum setting/maximum setting.

Trip unit rating In corresponds to the maximum value of the setting

range. B Ir Thermal protection pickup ✔ ✔ – C tr Thermal protection time delay O O – D Im Magnetic protection pickup ✔/O O ✔ E tm Magnetic protection time delay O O O (1) Functions:

✔: Adjustable O: Non-adjustable ✔/O: Adjustable or non-adjustable according to the trip unit rating –: Not present

(1)

Type TM-D TM-G MA OOO

DOCA0140EN-01 01/2020 97

Compact NSX - Trip Units

Upgradeability of Thermal-Magnetic Trip Units

HAZARD OF DESTRUCTION OF THE MICROLOGIC TRIP UNIT It is mandatory to use snap-off screws LV429513 to install a Micrologic trip unit. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Upgradeability of trip units depends on the circuit breaker type:

 For 1 or 2 poles, trip units are built-in.  For 3 or 4 poles, trip units are interchangeable.

NOTE: In Compact NSX circuit breakers with R, HB1, and HB2 breaking performances, the trip units are not interchangeable.

Onsite swapping of trip units is simple and reliable:

 No connections to make  No special tools (for example, calibrated torque wrench)  Compatibility of trip units provided by mechanical cap  Torque limited screw provides proper mounting (see drawing below)

WARNING

Sealing the Protection

The design of the trip units limits the risk of incorrect tightening or oversights. The simplicity of the swapping process means that it is easy to make the necessary adjustments as operation and maintenance processes evolve.

NOTE: When the trip unit has been mounted by this means, the trip unit can still be removed: the screw head is accessible. When a trip unit is reinstalled after being removed, it is mandatory to use torque limiting snap-off screws LV429513 for the reinstallation.

The transparent cover on thermal-magnetic trip units can be sealed to prevent modification of the protection settings:

DOCA0140EN-01 01/2020

Compact NSX - Trip Units

TM-D Thermal-Magnetic Trip Unit for 1P and 2P Circuit Breakers

Introduction

The TM-D thermal-magnetic trip unit for 1P/2P circuit breakers up to 160 A are built-in trip units. They are designed for AC and DC general-purpose applications. The TM-D built-in 1P/2P trip units provide:

 fixed thermal threshold  fixed magnetic pickup

Setting the Thermal Protection

The thermal protection pickup Ir cannot be adjusted and equals the value shown below:

Trip unit rating In (A) at 40 °C (104 °F) 16 20 25 32 40 50 63 80 100 125 160 Fixed Pickup Ir (A) at 40 °C (104 °F) 16 20 25 32 40 50 63 80 100 125 160

Setting the Magnetic Protection

The magnetic protection pickup cannot be adjusted and equals the value shown below:

Trip unit rating In (A)

Fixed pickup Im (A) +/– 20%

Marked AC value True DC value 260 260 400 400 700 700 700 800 1,000 1,200 1,250 (1) TM-D 1P/2P trip units are marked with AC values. A correction coefficient is required to obtain the DC pickup values indicated.

(1)

16 20 25 32 40 50 63 80 100 125 160 190 190 300 300 500 500 500 640 800 1,000 1,250

DOCA0140EN-01 01/2020 99

Compact NSX - Trip Units

TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A

Introduction

The TM-D thermal-magnetic trip unit for 3P/4P circuit breakers up to 63 A are interchangeable trip units. They are designed for AC and DC general-purpose applications. The TM-D interchangeable 3P/4P trip units provide:

 adjustable thermal threshold  fixed magnetic pickup

Description

The setting range and adjustment dials are on the front of the trip unit.

A Setting range for TM-D thermal-magnetic 3P/4P trip unit B Adjustment dial for the thermal protection pickup Ir

Setting the Thermal Protection

The thermal protection pickup Ir is set by a 4-setting dial. Turning the thermal protection adjustment dial (A) modifies the trip curve as shown (B).

The table below shows the values of the pickup Ir (in amperes) for thermal protection (values indicated on the dial) with respect to every trip unit rating, relative to the position of the dial Ir.

Trip unit rating In (A) at 40 °C (104 °F) 16 25 32 40 50 63 Pickup Ir (A) at 40 °C (104 °F) 11 18 22 28 35 44

13 20 26 32 40 50 14 23 29 36 45 57 16 25 32 40 50 63

Setting the Magnetic Protection

The magnetic protection pickup cannot be adjusted and equals the value shown below:

Trip unit rating In (A)

Fixed pickup Im (A) +/– 20%

Marked AC value True DC value 260 400 550 700 700 700 (1) TM-D 3P/4P trip units up to 63 A are marked with AC values. A correction coefficient is required to obtain the DC pickup values indicated.

(1)

16 25 32 40 50 63 190 300 400 500 500 500

100

DOCA0140EN-01 01/2020

Schneider Electric Compact NSX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CompactNSX

Table of Contents

Safety Information

About the Book

Compact NSX Circuit Break ers

CompactNSX Circuit Breaker Presentation

Compact NSX Range

Operating the Circuit Breaker

EcoStruxure Power Commission Software

De-Energizing the Circuit Breaker

Environmental Conditions

Circuit Breaker With Toggle Handle

Front Face Description

Opening, Closing, and Resetting the Circuit Breaker

Testing the Circuit Breaker

Locking the Circuit Breaker

Circuit Breaker With Rotary Handle

Front Face Description

Opening, Closing, and Resetting the Circuit Breaker

Testing a Circuit Breaker With Direct Rotary Handle

Locking a Circuit Breaker With Direct Rotary Handle

Testing a Circuit Breaker With Extended Rotary Handle

Locking a Circuit Breaker With Extended Rotary Handle

Motor-Operated Circuit Breakers

Front Face Description

Opening, Closing, and Resetting a Circuit Breaker With Motor Mechanism

Opening, Closing, and Resetting Circuit Breakers With Communicating Motor Mechanism

Locking the Circuit Breaker

Compact NSX Instal lation Accessories

Plug-in Circuit Breaker

Withdrawable Circuit Breaker

Accessories

CompactNSX Electrical Auxiliary Devices

Electrical Auxiliary Device Summary

Indication Contacts

SDx Module

SDTAM Module (Micrologic 2 M and 6 E-M)

BSCM Breaker Status Control Module

NSX Cord

Insulated NSX Cord

Control Auxiliaries

CompactNSX Trip Units

Fault Currents and Trip Units

Applications

Fault Currents in Electrical Distribution

Protection Against Overcurrents in Electrical Distribution

Protection Against Ground Faults

Protection for Motor-Feeders

TM-D, TM-G Thermal-Mag netic and MA Ma gnetic Trip Units

Thermal-Magnetic Trip Unit Summary

TM-D Thermal-Magnetic Trip Unit for 1P and 2P Circuit Breakers

TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers up to 63 A