Auxiliary AC Input Wiring for the HVB and TMS
NOTICE |
EQUIPMENT DAMAGE The Auxiliary AC input voltage supplied to the High Voltage Box (HVB) and Thermal Management System (TMS) must not exceed 275 Vac. Overvoltage can damage the equipment and void the warranty. Failure to follow these instructions may result in equipment damage. |
AC Supply Rating: Use wiring rated for up to 30 A. A 32 A miniature circuit breaker protects the HVB and auxiliary systems. The wiring is terminated within an AC junction box near the top of the HVB.
Voltage Limit: Supply voltage must be single-phase, 200–275 Vac. Do not exceed 275 Vac.
Transformer Use:
If needed, use a step-down transformer to provide ~240 Vac.
A transformer can be single-phase or three-phase, but each HVB requires only a single-phase input.
Minimum transformer size: 5 kVA for single-phase.
A transformer may serve multiple AES 210HV cabinets if adequately sized and wired.
NOTE |
If a 240 V single-phase source is unavailable, a transformer can step down 277 V or 480 V to 240 V. The transformer should be rated at least 5 kVA per cabinet. |