MGE UPS Systems 6000 manual UPS definition, Purpose, Brief description

MGETM GalaxyTM 6000 : Specification guide

Parallel UPS, three-phase, 250 to 3000 kVA*

* Power rating for an N+1 redundant configuration

1 - UPS definition

1.1 - Purpose

The purpose of this specification is to define the design, manufacture and testing characteristics required in view of supplying, putting into operation and maintaining an Uninterruptible Power Supply (referred to as a UPS in the rest of this document).

The UPS shall be designed to supply dependable electric power to:

For information purposes	MTBF in	Non availability
	hours
Single-UPS unit with static bypass	475000	2.1x10-5
Active modular redundancy n+1 with centralized
bypass
2 UPS units	3.11x106	3.22x10-6
3 UPS units	2.42x106	4.14x10-6
4 UPS units	1.97 x106	5.07 x10-6
5 UPS units	1.67x106	6 x10-6
6 UPS units	1.44x106	6.95 x10-6

1.2 - Brief description

The UPS system shall be made up of …[ 2 / 3 / 4 / 5 / 6 ]…identical parallel-connected UPS units with the same power rating, operating in double-conversion mode (also called on-line mode) in accordance with the VFI category described in standard IEC 62040-2.

Each UPS unit shall have a unit rating of …[ 250 / 300 / 400 / 450 500 / 600 / 800 ]… kVA, made up of the following components, described in this specification:

ωrectifier;

ωbattery charger;

ωinverter;

ωbattery;

ωa battery-management system.

In addition, the UPS shall be equipped with:

…………………………………………………………………………………………………………………………..

() for parallel connection of two single UPS units, with redundancy)

ωstatic bypass (via a static switch) on each unit;

ωmanual maintenance bypass on each unit;

ωuser and communications interface on each unit.

…………………………………………………………………………………………………………………………..

() for parallel connection with an external maintenance-bypass cabinet, up to four units)

ωstatic bypass (via a static switch) on each unit;

ωcommon, external, maintenance bypass for all units, installed in a cabinet;

ωuser and communications interface on each unit.

…………………………………………………………………………………………………………………………..

() for parallel connection with a centralized-bypass cabinet, up to six units)

ωa centralized bypass shall be made up of the following components:

-static bypass (via a static switch);

-manual maintenance bypass.

The centralized bypass shall be sized to support the entire load. Consequently, its power rating shall be …[ 250 / 500 / 800 / 1200 / 2000 …] kVA.

ωa user and communications interface for the entire UPS system.

The UPS system shall also comprise any and all other devices required for safe operation and maintenance, including circuit breakers, switches, etc.

The UPS system shall ensure continuity of electric power to the load within the specified tolerances, without interruption upon failure or deterioration of the normal AC source (utility power) for a maximum protection time determined by the capacity of the backup batteries installed.

APC By Schneider Electric Edition - 03/2009 Spec. E - 3