MGM Transformer Company Auto Transformers
Auto Transformers have the capability to supply a varying secondary voltage to an externally connected load. This is used predominantly is applications where various voltage outputs are required such as:
- DOE 2016 Efficiency Compliant
- UL 506, UL 1561 Listed
- Aluminum or Copper Windings
- 60 Hz
- Electrostatic Shield
- Min. 60 dB Common Mode Noise Attenuation (Single shield)
- 150¡C Temperature Rise
- ANSI C57.12.01
- Seismically Certified per ASCE/SEI 7-05
- OSHPD OSP Pre Approval
- Seismic Kits
- Wall Brackets
- Rodent Screens
- Weathershield Kits
STANDARD FEATURES
- DOE 2016 Efficiency Compliant
- UL 506, UL 1561 Listed
- Aluminum or Copper Windings
- 60 Hz
- Electrostatic Shield
- Min. 60 dB Common Mode Noise Attenuation (Single shield)
- 150¡C Temperature Rise
- ANSI C57.12.01
- Seismically Certified per ASCE/SEI 7-05
- OSHPD OSP Pre Approval
SOUND LEVELS
K Factor Rated dry type transformers are designed to meet NEMA ST-20 sound levels.
ACCESSORIES
- Seismic Kits
- Wall Brackets
- Rodent Screens
- Weathershield Kits
TESTING AND QUALITY ASSURANCE
As part of our quality assurance process, all K Factor Rated MGM Transformers go through a rigorous ANSI/IEEE test plan to ensure optimum performance. These tests include:
- Winding resistance test
- Turn ratio test
- Polarity and phase relation test
- No load losses and exciting current test
- Impedance and load loss test
- Applied potential test
ENCLOSURES
MGM ventilated transformers utilize a NEMA 2 rated drip proof metal enclosure with natural draft ventilation. MGM dual rated enclosures are suitable for indoor or outdoor applications and are standard on all models except the 225, 300, and 500 kVA transformers (optionalWeather-shield Kits are available for these units).
VOLTAGE TAPS
Taps will compensate for the high or low line voltages. K Factor Rated transformers are provided with 6 primary taps:
- 2@ 2-1/2% FCAN
- 4@ 2-1/2% FCBN
