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TM
6000 : Specification guide
Parallel UPS, three-phase, 250 to 3000 kVA*
* Power rating for an N+1 redundant configuration
APC By Schneider Electric Edition - 03/2009 Spec. E - 3
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
hours
Non availability
Single-UPS unit with static bypass 475000 2.1x10
-5
Active modular redundancy n+1 with centralized
bypass
2 UPS units 3.11x10
6
3.22x10
-6
3 UPS units 2.42x10
6
4.14x10
-6
4 UPS units 1.97 x10
6
5.07 x10
-6
5 UPS units 1.67x10
6
6 x10
-6
6 UPS units 1.44x10
6
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:
ω rectifier;
ω battery charger;
ω inverter;
ω battery;
ω a battery-management system.
In addition, the UPS shall be equipped with:
…………………………………………………………………………………………………………………………..
(
)
for parallel connection of two single UPS units, with redundancy)
ω static bypass (via a static switch) on each unit;
ω manual maintenance bypass on each unit;
ω user and communications interface on each unit.
…………………………………………………………………………………………………………………………..
(
)
for parallel connection with an external maintenance-bypass cabinet, up to four units)
ω static bypass (via a static switch) on each unit;
ω common, external, maintenance bypass for all units, installed in a cabinet;
ω user and communications interface on each unit.
…………………………………………………………………………………………………………………………..
(
)
for parallel connection with a centralized-bypass cabinet, up to six units)
ω a 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.
ω a 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.