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IEEE begins power switchgear standards, July 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.

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Circuit Breakers” (which will subsequently be withdrawn).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

IEEE has also approved a new switchgear standard, IEEE C37.16â„¢,
“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.

The group 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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