Account:  - Login  |  Webstore  |  Shopping basket cart
English  |  Franšais  |  Nederlands

Publication details

Publication CODE Title
NBN EN IEC 60947-8:2023 (2023-04) LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 8: CONTROL UNITS FOR BUILT-IN THERMAL PROTECTION (PTC) FOR ROTATING ELECTRICAL MACHINES
 
Price Excl. VAT Total number of pages, tables and drawings
18.00 € 5.
Description
This part of IEC 60947 series specifies requirements for control units, which control a switching device in response to the PTC thermistors incorporated in rotating electrical machines and the industrial application. It specifies requirements for that type of system comprising a positive temperature coefficient (PTC) thermistor having particular characteristics, and its associated control unit. This document includes: - the characteristics, construction, performance and tests of the control unit; and - its association with a PTC thermistor designated "Mark A". This document does not cover: - the incorporation of thermal protections into rotating machines and their maximum winding temperature. See IEC 60034-11; - use of the product within explosive atmospheres (see IEC 60079 (all parts)); - software and firmware requirements; NOTE 1 Guidance on embedded software is given in IEC TR 63201. - cyber security aspects (see IEC TS 63208). NOTE 2 It is not possible to specify all the requirements for the operating characteristics of a control unit, as they are dependent on some aspects of the PTC thermistors. Some aspects of the requirements of the thermal protector system can only be specified when account is taken of the characteristics of the rotating machine to be protected and the method of installation of the PTC thermistor within the machine.
Class  C
Available files
Not available under electronic format.
The publication in paper format can be ordered << here >>.
Status
Status IEC PUBLICATION
Situation Currently active
Replaces  NBN EN 60947-8:2004
Replaces  NBN EN 60947-8:2004/A1:2007
Replaces  NBN EN 60947-8:2004/A2:2013
Origin
Committee CLC/TC 121A
Low-voltage switchgear and controlgear
Approval
BEC Approval 2023-01-11
NBN Approval 2023-04-12
NBN Status New
Date of ratification (d.o.r.) 2023-01-11
Date of announcement (d.o.a.) 2023-04-11
Date of publication (d.o.p.) 2023-10-11
Date of withdrawal former edition (d.o.w.) 2026-01-11
IEC file modification date 2023-04-08