Alpha Technologies AMP24 HP - Manual (Page 14)

Doc. #: 0260011-J0 Rev B 12
DSP
400 Vdc
Boost
Telecom Grade
AC Output
DC In
AC
Mains
communication
CAN bus external
Dual redundant
synchronization
communication and
between modules
AMPS modules also have a ‘Boost’ over-current feature with 10 times the rated current capacity
for 20ms, allowing 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 AMPS24 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, AMPS24 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 regulated and filtered power to the load.