APC 7000 Specification guide Single UPS, three-phase, 160 to 500 kVA

Specification guide

Single UPS, three-phase, 160 to 500 kVA (cont.)

APC by Schneider Electric Edition - 01/2010 Single UPS spec - p. 6

initiated transfer shall also be possible.

If the bypass power is outside the specified tolerances or is not synchronized with the inverter, automatic transfer of

the load from the inverter to bypass power shall be disabled or shall take place after a calibrated interruption

adjustable from 15 to 1000 ms.

The static switch shall be equipped with an RC filter for protection against switching over voltages and ligh tning

strikes.

For the specified power rating of …[ 500 / 400 / 300 / 250 / 200 / 160 ]… kVA, the static switch shall be capable of

handling an over current of …[ 16 / 16 / 21 / 25 / 18 / 23 ]…. times the rated current of the UPS to facilitate

discrimination within the electrical installation.

If the bypass power is within the tolerances specified in section 4.2, the presence of the static switch shall make it

possible to use the short-circuit power of the bypass source to trip the downstream protection devices of the

inverter.

To ensure tripping in a selective manner, the available power shall be sufficient to trip protection devices with high

ratings (circuit breaker rated In/2 or UR fuses rated In/4, where In is the rated inverter current).

If the bypass source is outside the specified tolerances, the inverter on its own shall, for the same discrimination

requirements, be capable of tripping circuit breakers rated In/2 or UR fuses rated In/4, irrespective of the type of

short-circuit.

The UPS shall be compatible with the following system earthing arrangements (SEA):

ω Upstream source SEA: …[TT/ IT / TNS / TNC]…

ω Downstream installation SEA: …[ TT/ IT / TNS / TNC ]…

If the upstream and downstream SEAs are different, galvanic isolation shall be provided on the normal and bypass

lines.

6. Mechanical characteristics

The UPS and batteries shall be installed in cabinet(s) with an [ IP 20 / IP 32 ] degree of protection (standard IEC

60529). Access to the subassemblies making up the system shall be exclusively through the front.

The UPS shall require as little floor space as possible. To gain space, it shall be possible to install the UPS with the

back to the wall or back to back with another UPS unit.

To facilitate connections, all terminal blocks must be easily accessible from the front when the UPS is installed with

the back to the wall. Entry of upstream and downstream power cables, as well as any auxiliary cables, shall be

possible through the bottom without requiring a false floor.

The UPS shall be equipped with an earth-circuit connector, in compliance with the standards listed in section 12.

The cables shall comply with the standards listed in section 12 and be mounted in compliance with the safety

stipulations in section 6.6.

System cooling shall be by forced-air ventilation. To facilitate layout of cabinets (particularly when installed back to

the wall), air input shall be through the front and bottom, exit through the top.

All power electronics shall be equipped with a redundant ventilation system including fault detection.