MGM - Medium Voltage General Purpose Distribution Transformers

Standard Features

• Doe 10 CFR Part 431 Energy Efficiency
• UL 506, UL 1561 Listed
• Aluminum Windings
• 60 Hz
• Electrostatic Shield
• Min. 60 dB Common Mode Noise Attenuation (Single Shield)
• 150 C Temperature Rise
• ANSI C57.12.01
• Seismic Zone IV Compliant

Three-Phase dry type transformers (20kV BIL, 30 kV BIL – 2.5 KV, 5KV Class)

NOTES:

• Higher kV BIL, K-Factor or other special designs may require different case size.
• Temperature-rise test maybe required if to use smaller case.
• A general purpose (GP) unit that is bus ends goes into a substation case: consult MGM for case size.

STANDARD TAPS

• 2.5 & 5 Prl.V (all kva) – 2.5%, 2A2B

TYP IMPEDANCE (+/- ANSI TOL)

• 5kV, 30 BIL 4.5 ~ 5.5% or 5.25% +/- TOL+

Common Options

• Copper Windings
• Outdoor NEMA-3R Kit
• 80 & 115 C Temperature Rise
• K-Factor: up to K-30
• Wall Mount Brackets (15 – 115.5 KVA)
• 50 Hz; 50/60 Hz
• Totally Enclosed Non Ventilated (not UL listed)
• Any Voltage Arrangement
• Stainless Steel Case
• Reduced Sound Level

Testing and Quality Assurance

As part of our quality assurance process, all MGM Dry Type Transformers go through a rigorous ANSI/IEEE test plan to ensure optimum preformance. These tests include

• Winding resistance
• Turn ratio test
• Polarity and phase relation test
• No load losses and exciting current test
• Impedance and load loss test
• Applied potential test