IEC 60077-4 Ed. 2.0 b:2019

Current Revision

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

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IEC 60077-4 Ed. 2.0 b:2019

Name: IEC 60077-4 Ed. 2.0 b:2019 – Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers
Brand: International Electrotechnical Commission
SKU: IEC 60077-4 Ed. 2.0 b:2019
Price: 264.88 USD
Availability: InStock

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

PUBLISH DATE 2019

PAGES 64

Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers

IEC 60077-4:2019 is available as IEC 60077-4:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60077-4:2019 gives rules for AC circuit-breakers, the main contacts of which are connected to AC overhead contact lines; the nominal voltage of these circuits being in accordance with IEC 60850.

This document, together with IEC 60077-2, states specifically:

a) the characteristics of the circuit-breakers;
b) the service conditions with which circuit-breakers comply with reference to:
- operation and behaviour in normal service;
- operation and behaviour in short-circuit;
- dielectric properties;
c) the tests for confirming the compliance of the components with the characteristics under the service conditions and the methods to be adopted for these tests;
d) the information to be marked on, or given with the circuit-breaker.

This second edition cancels and replaces the first edition, issued in 2003. This edition includes the following main technical changes with regard to the previous edition:

a) standard values of transient recovery voltages and test procedure are reviewed;
b) procedure of verification of temperature rise is changed;
c) air-tightness test as type test, insulation resistance measurement are added.