5.5 POWER
The operang power is 115/230 VAC as primary, and 24VDC, alternavely 115/230 VAC as secondary. The Compact MPA
system will automacally switch between primary and secondary power sources in case of power supply failure. A secondary
power supply must be present at transion to emergency power supply in order to avoid the system boot sequence of
approximately 30 seconds. The system is unavailable for operaon during the boot sequence.
As an oponal safety precauon, the mains operang power may be pre-switched by means of a mechanical contactor/
switch-over module as long as the secondary supply is present to keep the system from power fail during the switching
period.
5.6 GLANDS
The cables enter the central and weatherproof units by means of cable glands. Where cable glands are not supplied from
the factory, the installer must t glands sized appropriately to the actual cable outer diameter to obtain the specied ingress
protecon.
The installer may drill holes as needed for cable glands in the removable gland plate which is mounted as standard in
Compact Cabinet. Ensure that holes are within cross-hatched area on illustraon above.
5.7 FERRULING
The conductors should be ferruled prior to terminaon onto the screw terminals.
5.8 MARKING
• Each cable is to be marked with cable numbers.
• Each conductor is to be marked with the specic terminaon numbers.
To Next Page
Loading...
Need help?
General
