Standard No.:	GB/T 14048.16-2006
Chinese Name:	低压开关设备和控制设备 第8部分：旋转电机用装入式热保护(PTC)控制单
English Name:	Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection(PTC) for rotating electrical machines
Professional Classification:	K31 Low-voltage distribution electrical equipment
Professional Classification:	GB National Standard
Issued by:
Issued on:	2006-11-09
Implemented on:	2007-04-01
Status:	ABOLISHED
Replace By:	GB/T14048.16-2016 Low-voltage switchgear and controlgear—Part 8:Control units for built-in thermal protection(PTC) forrotating electrical machines
Replace By Date:	2017-03-01
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
Delivery:	via email in 1-3 business day

1 Scope

This Part specifies rules for control units, which perform the switching functions in response to the thermal detectors incorporated in rotating electrical machines according to GB/T 13002-1991, and the industrial application.
It specifies rules for that type of system comprising a positive temperature coefficient (PTC) thermistor detector having particular characteristics, and its associated control unit.
The PT100 detectors are covered by IEC 60751:1983, where the resistor values are given according to the temperatures of the detector.
The present rules lay down the characteristics of association of this particular positive temperature coefficient thermistor detector and its associated control unit (designated “Mark A detector” and “Mark A control unit”), when they are used in thermal protection systems.
Note: 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 thermal detectors. 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 detector within the machine.
For these reasons, for each characteristic it is necessary to specify who is responsible for stating the required values and who is responsible for compliance with the requirement and for carrying out any confirmatory test.

2 Normative References

The following documents contain provisions which, through reference in this Part, become provisions of this Part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents apply. For undated references, the latest edition of the normative document referred to applies.