CENELEC
Project
| Reference | EN 60947-8:2003 |
|---|---|
| Title | Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines |
| Project Number | 15182 |
| Abstract/Scope | Specifies rules for control units, which perform the switching functions in response to the thermal detectors incorporated in rotating electrical machines according to EN 60034-11, 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 EN 60751, 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. |
| Status |
Published
|
Status
| Current Stage code | 6060 |
|---|---|
| Current Stage code date | 2003-07-18 |
| Current Stage code deadline | 2004-04-01 |
| Deadline date for vote |
Legal
| Directive(s) | EMC (2004/108/EC), LVD (2006/95/EC) |
|---|---|
| Mandate(s) | M/404 |
| Order Voucher |
Details
| IEC Technical Body | IEC/SC 17B |
|---|---|
| Reference Document | IEC 60947-8:2003 (EQV) |
| ICS | 29.130.20 - Low voltage switchgear and controlgear |
| Keywords | Switchgear; Controlgear; LV; Control unit; Thermal protection |
| Note | |
| A-Deviation(s) | |
| Special National Condition(s) |
Environment
History
Implementation Dates
| date of Ratification (DOR) (1) | 2003-07-01 |
|---|---|
| date of Availability (DAV) (2) | 2003-07-18 |
| date of Announcement (DOA) (3) | 2003-10-01 |
| date of Publication (DOP) (4) | 2004-04-01 |
| date of Withdrawal (DOW) (5) | 2006-07-01 |
Relations
| Supersedes | |
|---|---|
| Superseded by | |
| Normative reference (6) |
EN 55011:1998
A1:1999 EN 55022:1998 corr. August 1999 corr. July 2001 corr. July 2003 corr. March 2005 A1:2000 IEC 60034-11:1978 IEC 60410:1973 EN 60738-1:1999 EN 60751:1995 : : A2:1995 EN 60947-1:1999 corr. October 1999 A1:2000 A2:2001 EN 60947-5-1:1997 A1:1999 A2:2000 A11:1997 A12:1999 EN 61000-4-2:1995 A1:1998 A2:2001 EN 61000-4-3:2002 EN 61000-4-4:1995 A1:2001 A2:2001 EN 61000-4-5:1995 A1:2001 EN 61000-4-6:1996 A1:2001 EN 61000-4-8:1993 A1:2001 EN 61000-4-11:1994 A1:2001 EN 61000-4-13:2002 IEC 60417-DB:2002 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
