Mains Breakdown Relay
To be able to distinguish PSM faults from power failure, a mains
breakdown relay must be used on the repeater mains supply.
The mains breakdown relay is not included in the repeater. So, it has to
be mounted outside the repeater chassis. The relay intended for this
purpose must fulfil the following specifications:
Relay specifications
Closing time:
max. 30 milliseconds
Insulation coil/contact:
min. 4KV
Mains connected relay must be in compliance with valid local regulations.
Connection
•
Connect a normally closed relay contact to pin AI1 and AIC on the
P119 alarm connector (closed contact at no current). Alarm is initiated
by short circuiting the AI1 and AIC inputs as shown in Figure 3-8. The
P119 alarm connector is detailed on
•
Connect the relay coil. It must be supplied from the same fuse as the
repeater.
•
After commissioning, set the mains breakdown feature as described in
the
AR Repeaters and OMT32, User’s Manual.
ANT
HI
LO
ANT
LO
HI
P119
P119:
AI1
P119:
AIC
V
Figure 3-8. Mains breakdown relay connection
ALLGON Systems AB
ALR Compact Repeater
Installation
VD203 67/EN - User’s Manual
Rev. 1A 2000-07
3 - 13
