MGE UPS Systems Galaxy 3000 Specifications download pdf (Page 9)

MGE UPS SYSTEMS - Galaxy 3000 Specification 9 Effective: September, 2006

3.1 MECHANICAL DESIGN AND VENTILATION

A. Enclosure: The UPS shall be housed in a freestanding enclosure with dead front construction. The

mechanical structure of the UPS shall be sufficiently strong and rigid to withstand handling and

installation operations without risk. Access to UPS subassemblies shall be through the front or top. The

sheet-metal elements in the structure shall be protected against corrosion by a suitable treatment, such

as zinc electroplating, bichromating, epoxy paint or an equivalent.

B. Cable Access: The standard UPS available shall accommodate top and bottom entry cables. The 10 and

15 kVA Micro Cabinet version shall accommodate bottom entry cables as standard and top entry cables

with the addition of an auxiliary cabinet.

C. Cabinet Weights and Dimensions: The width of the UPS is [ ] (in inches) and has a maximum weight

of [ ] (in lbs).

D. Ventilation and Heat Rejection: The UPS shall be designed for forced air-cooling. Air inlets shall be

provided from the front bottom of the UPS enclosure. Air exhaust shall be from the top rear portion of the

unit. Full load heat rejection is [ ] BTU /hour.

3.2 BATTERY

The UPS module shall use a valve regulated sealed lead acid heavy-duty industrial battery designed for

auxiliary power service in a UPS application. The primary battery shall be furnished with impact resistant

plastic cases and housed in rack out containers inside the UPS module.

A. Protection Against Deep Discharge and Self-Discharge: The UPS shall be equipped with a device

designed to protect the battery against deep discharge, depending on discharge conditions, with

isolation of the battery by a circuit breaker. In particular, a monitoring device shall adjust the battery

shutdown voltage as a function of a discharge coefficient to avoid excessive discharge at less than the

rated output. A second device shall avoid self-discharge of the battery into the UPS control circuits

during an extended shutdown of the UPS (over two hours).

B. Battery Self-Tests: The battery monitoring system shall be to perform the following automatic

functions:

n Battery circuit checks every twelve hours

n Open-circuit battery test once a month

n Partial discharge test every three months

This self-test system shall signal faults via LEDs on the front panel or a message to remote supervision

systems.

4.0 ACCESSORIES

A. Extended Battery Cabinet: Matching battery cabinets shall be furnished in both adjacent or stand

alone versions for the 10-30 kVA 32.75” standard UPS cabinet. The cabinet shall match the width,

height, and depth of the UPS module. All power wiring and control cables shall be included for

adjacent models.

B. UL 924 Listed Battery Cabinet: A UL 924 listed battery cabinet shall be provided for 10, 15, 20, and

30 kVA UPS modules. The specific UPS and specific battery cabinet comprise the UL 924 listed

system. This system shall be in compliance with UL 924 criteria for a minimum of 90 minutes of

battery operation with a full load on the UPS. UL 924 recharge criteria shall be met with both normal

and reduced input voltage conditions. The battery cabinet shall be non-matching and available in stand

alone version only. Power wiring and control cables from the UPS to the battery cabinet are not

included. With multiple battery cabinets, interconnect cables shall be provided.

C. Automated monitoring / RemotePowerMonitoring™ Service: RemotePowerMonitoring™, which is

a twenty-four hour-per-day, seven day-per-week remote UPS monitoring and reporting service shall be

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MGE UPS Systems Galaxy 3000 Specifications Page 9

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