
11 Powering up the SPC controller
The SPC controller has two power sources, the mains supply and the integral standby battery. A qualified
electrician should undertake connection to the mains and the mains supply should be connected from a
spur that can be isolated. See
Wiring of mains cable to the controller
on page 377 for full details of
conductor sizes/fuse ratings, etc.
The SPC should be powered from the mains first and then the internal standby battery. For compliance to
EN only one battery should be fitted of the appropriate capacity.
11.1 Powering from battery only
It is recommended that when powering a system from battery only, the battery should be in a fully charged
state (>13.0V). The system will not power up when using a battery with less than 12V and no mains is
applied.
NOTICE: The battery will continue to power the system until deep discharge level (10.5V to 10.8V)
has been detected. The time duration that the system will hold up on battery will depend on the
external loading and Ah rating of the battery.
© Vanderbilt 2018
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