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NEMA DC 20 - Residential Controls - Class 2 Transformers
January 1, 1992 - NEMA

This Standards Publication covers Class 2 transformers intended primarily for use in 30 volts rms maximum low-voltage residential control circuits. It includes definitions, electrical ratings, performance standards, mounting dimensions, and marking requirements.

NEMA VSP 1 - Susceptibility of Electrical and Electronic Components to Surge Damage
January 1, 2017 - NEMA

The purpose of this paper is to present the test results of actual devices in a real-world surge environment. This white paper will generate some information on the surge susceptibility for various electrical components. This white paper is not meant to be an exhaustive study, nor a complete test...

CSA C88.1 - Power transformer and reactor bushings
January 1, 2018 - CSA

This Standard applies to outdoor bushings that have lightning impulse insulation levels 110 - 1950 kV. They are for use as components of liquid-filled transformers and reactors on systems with a nominal voltage of 15-765 kV. This Standard provides electrical characteristics and provides...

NEMA C57.12.10 - Transformers - 230 kV and Below 833 / 958 through 8333 / 10 417 kVA, Single-Phase, and 750 / 862 through 60 000 / 80 000 / 100 000 kVA, Three-Phase Without Load Tap Changing; and 3750 / 4687 through 60 000 / 80 000 / 100 000 kVA with Load Tap Changing - Safety Requirements
January 1, 1997 - NEMA

This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of 60-Hz, two-winding, liquid-immersed transformers rated as follows, and used for stepdown or step-up purposes: a) 833/958 through 8333/10 417 kVA,...

NEMA 260 - Safety Labels for Pad-Mounted Switchgear and Transformers Sited in Public Areas
January 1, 1996 - NEMA

These labels are for use on pad-mounted switchgear and transformers sited in public areas, such as utility easements adjacent to residential properties, shopping centers, schools, etc. They may also be used for such equipment sited in utility or industrial properties which are not normally...

MIL-PRF-27/290 - TRANSFORMER, AUDIO FREQUENCY
March 17, 2017 - NPFC
A description is not available for this item.
MIL-PRF-27/157 - TRANSFORMER POWER, STEPDOWN
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/134 - TRANSFORMER, POWER, STEP-DOWN
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/103 - TRANSFORMER, AUDIO FREQUENCY
November 1, 2016 - NPFC
A description is not available for this item.
MIL-PRF-27/165 - TRANSFORMER AUDIO FREQUENCY
November 1, 2016 - NPFC
A description is not available for this item.
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