Amplifier Power Supply - Bosch PRAESENSA Installation Manual

116 en | Multifunction power supply, large | PRA-MPS3
Caution!
Only replace with a fuse of the same type, certified for IEC 60217 or UL 248.
!
11.5.4

Amplifier power supply

The multifunction power supply has three independent 48 VDC outputs to supply power to
three PRAESENSA 600 W power amplifiers. Each output has dual A/B connectors for
connection and cable redundancy. This is especially useful when the amplifiers and the power
supply are not in the same rack and the power supply cable is accessible or vulnerable. It is
recommended to always use both connections.
Connection procedure
1.
2.
3.
2019.11 | V1.00 |
– Because the fuse is only connected in line with one of the mains conductors (L or N),
never use the fuse as a means to interrupt the mains in case of service. Pull out the
C13‑connector of the power cord to disconnect the mains.
3
The power supply interconnection wiring and ferrules are delivered with the amplifier.
– The power supply terminal plugs (B) are delivered with the multifunction power
supply.
Follow the power supply cable assembly instructions as provided for the amplifiers.
– Observe polarity.
Insert the power supply terminal plugs of the interconnection cables into the A/B sockets
of one of the three 48 VDC outputs.
– It is good practice to connect output A of the power supply to input A of the
amplifier and the same for B. Cross coupling is allowed, but may be confusing in
case of fault finding.
2
1
B
+
+
PRA-AD60x
Installation manual
PRAESENSA
Bosch Security Systems B.V.