Major Components, Standard Cabinets | APC 4075KVA208V, GLF50KF, 4000

Major Components

Rectifier	Converts AC input voltage to DC voltage. The rectifier uses IGBT (Insulated
	Gate Bipolar Transistor) power transistors and a Pulse Width Modulated (PWM)
	technique to provide input power factor correction and to minimize any harmonic
	reflected onto the input power lines.
Inverter	Converts DC voltage from the rectifier or from the batteries into AC output voltage
	to maintain the attached load. This module uses the IGBT technology to provide
	digital power quality.
Static Switch	Automatically supplies the attached load from the bypass source when the inverter
	is off.
Battery System	Stores energy for utilization by the inverter and attached load in the event that utility
	AC power is lost or is of unacceptable quality.

Single Line Diagram

During normal operation, the utility power (Main input) is supplied to the UPS rectifier. The rectifier converts the AC power to DC that is supplied to the inverter. The inverter converts the DC voltage to three-phase regulated AC voltage, which is supplied to the attached load.

During power failure conditions, the inverter is supplied by the stored energy in the battery system, and the load is powered continuously with no interruption.

The MGE Galaxy 4000 UPS is designed for internal operation of 208VAC input and output. External batteries, and an output distribution panel may be contained in auxiliary cabinets similar in design to the MGE Galaxy 4000 cabinet. Batteries or external maintenance bypass circuit breakers may also be contained in third party cabinets or wall mounted units.

Refer to Appendix “Single Line Diagram”.

Standard Cabinets

The MGE Galaxy 4000 individual cabinet dimensions are:

•UPS cabinet: 72.1in (1831mm) H x 33.5in (851mm) W x 35.6in (904mm) D.

•External battery cabinet: 72.1in (1831mm) H x 26.5in (673mm) W x 33.5in (851mm) D OR –

•External battery cabinet: 72.1in (1831mm) H x 33.5in (851mm) W x 33.5in (851mm) D.

•Distribution cabinet: 72.1in (1831mm) H x 19.5in (495mm) W x 33.5in (851mm) D.

The UPS cabinet is designed to provide for top and bottom entry of the utility power feed. An output voltage of 208VAC is standard with the MGE Galaxy 4000 and does not require any additional cabinetry. The complete list of additional cabinets that could be included with your MGE Galaxy 4000 system are: external maintenance bypass wall cabinet, external battery cabinet, and distribution cabinet.

The external battery cabinets are provided in two different cabinet sizes depending upon the battery type selected. Up to four battery cabinets may be provided. The cabinets may be installed adjacent to the UPS or remotely and are designed for top and bottom entry. The distribution cabinet provides a 42 pole panelboard, with an optional submain circuit breaker. The cabinet is designed for top and bottom entry.

990–3964–001

MGE Galaxy 4000 40–75 kVA 208 V

4075KVA208V, GLF50KF, 40004075KVA208Vi, 4000 specifications

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