CENELEC
Project
| Reference | EN 62271-110:2005 |
|---|---|
| Title | High-voltage switchgear and controlgear - Part 110: Inductive load switching |
| Project Number | 16400 |
| Abstract/Scope | Applicable to a.c. circuit-breakers designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1000 V and applied for inductive current switching with or without additional short-circuit current breaking duties. The standard is applicable to circuit-breakers in accordance with EN 62271-100 that are used to switch high-voltage motor currents and shunt reactor currents and also to high-voltage contactors used to switch high-voltage motor currents. Switching unloaded transformers, i.e. breaking transformer magnetizing current, is not considered in this standard. The reasons for this are as follows: a) due to the non-linearity of the transformer core, it is not possible to correctly model the switching of transformer magnetizing current using linear components in a test laboratory. Tests conducted using an available transformer, such as a test transformer, will only be valid for the transformer tested and cannot be representative for other transformers; b) as detailed in the guide for application of EN 62271-100 and EN 60694, the characteristics of this duty are usually less severe than any other inductive current switching duty. It should be noted that such a duty may produce severe overvoltages within the transformer winding(s) depending on the circuit-breaker re ignition behaviour and transformer winding resonance frequencies. Short-line faults, out-of-phase current making and breaking and capacitive current switching are not applicable to circuit-breakers applied to switch shunt reactors or motors. These duties are therefore not included in this standard. |
| Status |
Withdrawn
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Status
| Current Stage code | 6060 |
|---|---|
| Current Stage code date | 2005-10-28 |
| Current Stage code deadline | 2006-07-01 |
| Deadline date for vote |
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Details
| IEC Technical Body | IEC/SC 17A |
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| Reference Document | IEC 62271-110:2005 (EQV) |
| ICS | 33.100.10 - Emission 33.100.20 - Immunity |
| Keywords | Switchgear; Controlgear; HV; Load switching; Inductive |
| Note | Superseded by EN 62271-110:2009 |
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Information
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History
Implementation Dates
| date of Ratification (DOR) (1) | 2005-10-01 |
|---|---|
| date of Availability (DAV) (2) | 2005-10-28 |
| date of Announcement (DOA) (3) | 2006-01-01 |
| date of Publication (DOP) (4) | 2006-07-01 |
| date of Withdrawal (DOW) (5) | 2008-10-01 |
Relations
| Supersedes | |
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| Superseded by | EN 62271-110:2009 |
| Normative reference (6) |
EN 62271-100:2001
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(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.
