Alpha Technologies AMPS80 HP - Manual (Page 13)

11 Doc. #: 026-069-B0 Rev F
AMPS modules also have a ‘Boost’ over-current feature with 10 times the rated current capacity for 20ms, al-
lowing it to trip breakers downstream, thus protecting the load.
2.1.1 AC or DC input priority
The user can choose either AC or DC input priority. If AC priority is chosen, the AMPS80 HP acts more
like an on-line, double conversion UPS. If AC commercial power is available, this power is filtered twice
and passed to the AC output. If the AC commercial power fails, the DC converter simply takes over and
supplies the power from the batteries.
If DC priority is chosen, the AMPS80 HP acts more like an Inverter with AC bypass function. Normally,
power is drawn from the batteries. If DC power fails, the AC-DC converter takes over, still providing regu-
lated and filtered power to the load.
DSP
400 Vdc
Boost
Telecom Grade
AC Output
DC In
AC
Mains
communication
CAN bus external
Dual redundant
synchronization
communication and
between modules