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IEEE four new power switchgear standards May 2009


May 26, 2009

IEEE has launched work on a new standard, PC37.20.8 “Standard for Metal-Enclosed Low-Voltage (3200V and Below) Direct Current Power Circuit Breaker Switchgear for Traction Power Applications”. The intent of the project is to identify specific requirements of metal-enclosed low-voltage direct current power circuit breaker switchgear used in traction power applications.

It has also approved work to begin on revisions to three existing
switchgear standards. The first, PC37.10 “Guide for Investigation,
Analysis and Reporting of Power Circuit Breaker Failures”, will combine
the existing C37.10 standard with 1325 “IEEE Recommended Practice for
Reporting Field Failure Data for Power Circuit Breakers”, which will
then be withdrawn.

The next two revisions, PC37.013 “Standard for AC High Voltage (Rated
Above 1000 V) Generator Circuit Breakers for Use With Generators Rated
10 MVA or More” and PC37.016 “Standard for AC High Voltage Circuit
Switchers Rated 15.5kV through 245kV” will each be revised in
coordination with the International Electrotechnical Commission (IEC)
as part of the two organizations’ harmonization efforts.

IEEE has also approved a new switchgear standard, C37.16 “Standard for
Preferred Ratings, Related Requirements, and Application
Recommendations for Low-Voltage AC (635V and Below) and DC (3200V and
Below) Power Circuit Breakers”. The standard defines the preferred
ratings for low-voltage AC (635V and below) power circuit breakers,
general purpose DC (325V and below) power circuit breakers, heavy duty
low-voltage DC (3200V and below) power circuit breakers, and fused
(integrally or non-integrally) low-voltage AC (600V and below) power
circuit breakers.

IEEE has also reaffirmed two existing standards: C37.26 “IEEE Guide for
Methods of Power Factor Measurement for Low-Voltage Inductive Test
Circuits” and C37.40 “IEEE Standard Service Conditions and Definitions
for High-Voltage Fuses, Distribution Enclosed Single-Pole Air Switches,
Fuse Disconnecting Switches, and Accessories”.

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