MGE EPE EPS-2101/44.66 125KVA 3-Phase 480V Uninterruptible Power Supply UPS

MGE EPE EPS-2101/44.66 125KVA 3-Phase 480V Uninterruptible Power Supply UPS

The EPE Technologies EPS-2101/44.66 is a 125KVA three-phase online uninterruptible power supply from the MGE EPS 2000 series, manufactured in 1997 by EPE Technologies, Inc. — a subsidiary of Square D and produced under license from Merlin Gerin (MGE). It provides 480V three-phase input and output power conditioning with an internal battery plant (battery not included with this unit). The EPS 2000 series was designed for large commercial and industrial critical-power applications requiring continuous, conditioned three-phase power.

Specifications & What's Included

• Model: EPS-2101/44.66
• Power Rating: 125 kVA
• Phase: 3-Phase
• Frequency: 60 Hz
• UPS Input: 480V, 3PH, 60Hz, 3W+G, 148A, 0.9 PF LAG
• UPS Output: 480V, 3PH, 60Hz, 3W+G, 120A, 0.8 PF
• Bypass Input: None
• Battery Input Voltage: 390–480 VDC
• Battery Current: 218A at 390 VDC
• Battery: Not included
• Internal transformer: 3-phase, 125 kVA, 60 Hz — Cat. No. 8-96125-53
• Transformer voltage: 265 Delta – 493Y/285V
• Transformer insulation system: Class 240A
• Transformer temperature rise: 150°C
• Manufacturer: EPE Technologies, Inc. (subsidiary of Square D; licensed from Merlin Gerin)
• Manufacture year: 1997
• Form factor: Floor-standing two-door cabinet
• Front panel controls: Emergency Power Off (dual-button), Silence Alarm, LCD status display, Scroll/Volts/Current/Menu/Enter keypad, Alarm indicator
• Interior: Three-phase transformer cores, power bus bars, capacitor banks, control wiring, high-voltage circuit breakers (Q45, Q1)
• Rear/interior: High-voltage terminal bus bars with multi-conductor wiring, red-handled disconnect switch

Applications

The MGE EPS 2000 series represents large-scale, double-conversion online UPS systems designed for three-phase critical power infrastructure. At 125 kVA, this class of system was commonly deployed to protect data centers, manufacturing facilities, telecommunications switch rooms, hospitals, and other environments where a power interruption or line disturbance to three-phase equipment would cause significant operational or financial harm. The EPS 2000 series operates as a true online double-conversion UPS: input AC is rectified to DC, used to float the battery bank, and simultaneously inverted back to clean AC for the output — meaning the load is always running from the inverter, fully isolated from input line disturbances. EPE Technologies produced this line in the mid-to-late 1990s under license from Merlin Gerin (the French power protection brand that later became part of Schneider Electric's MGE UPS Systems division). Today these units are sought for parts, transformer salvage, rebuilds, or as the foundation for a refurbished three-phase UPS installation where a compatible external battery string can be supplied.