The HPS Millennium G is a line of energy efficient medium voltage distribution transformers which meet the latest U.S. DOE 10 CFR Part 431 efficiency standards.HPS Millennium G transformers are rated for 2400 to 4160 volts. They are designed for commercial, industrial, or renewable energy applications. The standard NEMA 3R ventilated construction is ideally suited for indoor or outdoor applications.1 Year WarrantySpecificationsRatings from 15-1500 kVAHigh voltage: Up to 5kV Class; Up to 45kV BILLow voltage: 208Y/120V to 600Y/347V, 10kV BIL60 Hz frequency (others available upon request)220 deg. C (150 deg. rise) typical, 200 deg. C (130 deg. C rise) for some lower kVA unitsType 3/3R (Type 4/4X or Type 12 available. Enhanced Type 3R option available for improved outdoor performance.Front accessible separate high and low voltage terminals; connectors suitable for aluminum and copper are provided for easy cable installationMeets NEMA ST-12 standardsUL Listed, CSA Certified