About the Book - NT/NW Maintenance Guide

Document Scope

@TechPub writer (07/2016): FYI, program maintenance description (English-French), translated in 2016 was the one in NT/NW Maintenance Guide "LVPED508016EN-02" and "LVPED508016FR-02" (2013); NT/NW Maintenance Procedures Level 2 and 3 "HRB16483-00" (2013); NT/NW Maintenance Procedures Level 4 "HRB16484-00" (2012). For translation in 2018, use latest version of PSE1217, PSE1287, PSE1416.

Schneider Electric recommends a preventive maintenance program to ensure that devices retain the operating and technical characteristics specified in the catalogs during their service life. Maintenance must be carried out by trained and qualified personnel, in accordance with instructions specified in this MasterPact™ NT/NW maintenance guide.

This guide contains information on:

Maintenance frequency depending on the environmental and operating conditions and criticality of the user application.
Maintenance required after prolonged storage.
Schneider Electric tools for maintenance assistance.
The parts of the MasterPact NT/NW devices that must be maintained:
- Elements of the breaking unit: case, arc chutes, and main contacts
- Power connections
- Chassis
- Charging Mechanism
- MicroLogic™ control unit
- Communication system
- Auxiliary circuits
- Mechanical interlocking systems
The risks involved when a part is not fully operational.
The preventive maintenance program to be carried out, and the competence level required for each program.
Environmental and operating conditions that cause accelerated aging of a device.
Limits governing the use of mechanical and electrical accessories and subassemblies.
Links to device guides and related documents that can help to maintain the MasterPact NT/NW devices in proper operating order.

Audience

This guide is intended for trained and qualified personnel in charge of equipment maintenance and for Schneider Electric field service representatives in charge of equipment maintenance and diagnostics.

Validity Note

This guide applies to MasterPact NT/NW IEC circuit breakers and switch-disconnectors.

Online Information

The information contained in this document 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 www.se.com/docs.

The technical characteristics of the devices described in the present document also appear online. To access the information online, go to the Schneider Electric home page www.se.com/ww/en/download/.

The characteristics that are described in the present document should be the same as those characteristics that appear online. In line with our policy of constant improvement, we may revise content over time to improve clarity and accuracy. If you see a difference between the document and online information, use the online information as your reference.

Convention

In this guide, the term MasterPact NT/NW device covers circuit breakers and switch-disconnectors.

Related Documents

@Translators (01/2019): 1) For Reference Numbers, change EN in the reference to the 2-letter ISO code of your translation and change the URL the same way. Example of translation into French: DOCA0103EN(URL: https://www.schneider-electric.fr/fr/download/document/DOCA0103EN/) becomes DOCA0103FR(URL: https://www.schneider-electric.fr/fr/download/document/DOCA0103FR/). 2) If a Reference Number is not translatable, nothing to do.

@TechPub writer (03/2019): XRefWebs restructured (in 01/2019) following policy change for Building&IT Business Unit. Links must be translated by translators, that is, translators MUST change the language code (2-letter ISO code) in the visible part of the link and in the URL. Therefore, tag a URL as an element in the XrefWeb so that it is visible for the translators (P>XRefWeb (reference) >TargetURL (full URL)). Catalogs (and some specific guides) are not translated so Links keep standard structure P>XRefWeb and are tagged NoTrans.

Title of Documentation	Reference Number
MasterPact NT - Circuit Breakers and Switch-Disconnectors – User Guide	51201116AA
MasterPact NW - Circuit Breakers and Switch-Disconnectors – User Guide	04443720AA
MasterPact NW – DC Circuit Breakers and Switch-Disconnectors - User Guide	04444163A
MicroLogic Control Units 2.0, 5.0 and 6.0 - User Guide	04443722AA
MicroLogic Control Units 2.0 A, 5.0 A, 6.0 A, 7.0 A 2.0 E, 5.0 E, 6.0 E – User Guide	04443724AA
MicroLogic Control Units 5.0 P, 6.0 P and 7.0 P – User Guide	04443726AA
MicroLogic Control units 5.0 H, 6.0 H and 7.0 H – User Guide	04443728AA