MGM Transformer Company Medium Voltage Dry General Purpose Transformer
MGM’s Medium Voltage distribution transformers are used in a wide variety of Commercial, Residential, and Industrial applications.Ê These ventilated transformers come in single-phase and three-phase and are available in a variety of primary and secondary voltage combinations including non-standard voltage arrangements.
All products are designed, manufactured and tested in accordance with applicableÊ UL, cUL, NEMA, IEEE and ANSI standards and have efficiency levels at or above DOE 2016 requirements.ÊÊ
- 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
- Copper Windings
- Outdoor NEMA-3R Kit
- 80 & 115C Rise
- K Factor up to K-30
- Wall Mount Brackets (15-115.5 KVA)
- 50 Hz; 50/60 Hz
- Totally Enclosed Non Ventilated
- Stainless Steel Case
- Reduced Sound Level
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
COMMON OPTIONS
- Copper Windings
- Outdoor NEMA-3R Kit
- 80 & 115C Rise
- K Factor up to K-30
- Wall Mount Brackets (15-115.5 KVA)
- 50 Hz; 50/60 Hz
- Totally Enclosed Non Ventilated
- Stainless Steel Case
- Reduced Sound Level
SOUND LEVELS
MGM 600 Volt class general purpose dry type transformers are designed to meet NEMA ST-20 sound levels.
- 0-9 KVA: 40dB
- 10-50 KVA:L 45dB
- 51-150 KVA: 50 dB
- 151-300 KVA: 55 dB
- 301-500 KVA: 60 dB
TESTING AND QUALITY ASSURANCE
As part of our quality assurance process, all 600 Volt 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).
