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PCS100 AVC-20 User Manual
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15 INSTALLATION REQUIREMENTS
15.1 Maintenance Bypass
ABB recommends that a maintenance bypass (not supplied with the PCS100 AVC-20) is fitted. The maintenance
bypass allows maintenance to be performed on the PCS100 AVC-20 without disruption to the load.
ABB requires the input and output breakers of a maintenance bypass to be lockable for an ABB service personnel
to carry out any work on the PCS100 AVC-20. Please note that ABB LV breakers do not provide this as standard
but as an option.
The PCS100 AVC-20 unit is designed to withstand significant short circuit current. Typical short circuit withstand
ratings are summarized in the model tables and also in the table above. The smaller systems rely on fault current
limiting protection from upstream circuit breakers or fuses provided by the customer.
For 1B frame size current limiting molded case circuit breakers (MCCB) are required to provide very fast clearing
of short circuit currents. ABB T5 series or equivalent are suitable.
15.2 Floor Requirements
All enclosures must be installed on a horizontal fireproof surface.
Do not exceed ± 0.2° change in slope between adjacent enclosures.
Do not exceed ± 5 mm in elevation between adjacent enclosures.
15.3 Electromagnetic Compatibility (EMC)
The PCS100 AVC-20 is designed for commercial and industrial applications. It is not suitable for connection to a
low-voltage utility that is supplying residences unless additional measures are taken.
The PCS100 AVC-20 is rated to carry short duration fault currents to 2000% for 200 ms, and the upstream
protection for small systems must be sized within this capability.
If required, the ABB factory can help with sizing appropriate protection. The PCS100 AVC-20 can sustain the fault
currents listed above without damage and can be returned immediately to service following the fault. Where
higher fault currents occur, service may be required following a downstream fault as an option.
15.4 Location
The PCS100 AVC-20 is designed for location in a restricted access location only.
The PCS100 AVC-20 is designed for connection by fixed wiring.
The PCS100 AVC-20 system should be located in a clean electrical room with a controlled environment
temperature and humidity according to the requirements under the Technical Specification section.
15.5 Cooling
For PCS100 AVC-20 particular application losses for cooling system sizing please see the PCS100 AVC-20 model
range tables in this Manual.
15.6 Power System
The PCS100 AVC-20 is designed for location in a restricted access location only.
The PCS100 AVC-20 is designed for connection by fixed wiring.
The PCS100 AVC-20 system should be located in a clean electrical room with a controlled environment
temperature and humidity according to the requirements under the Technical Specification section.
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