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3. The auxiliary power supply cable is fed
through the gland in the power isolation
unit. Ensure the gland seals around the
insulation of the auxiliary power supply
cable.
4. The two power wires of the auxiliary
power supply cable are connected into
the power isolation unit terminal block
and tightened in place. Connect the
ground wire as shown.
Ensure the correct wire is installed into
the matching terminal block.
5. Fit the power isolation unit cover and
screw in place (torque 13 in-lb (1.5 Nm))
using screwdriver.
6. Plug the cable from the RCU electronics
compartment into the labelled socket on
the power isolation unit.
Figure 27: Power isolation unit connection details
A
B
C
Item
Description
A
Line
B
Neutral
C
RCU electronics power cable
Solar power supply
The solar cable should be connected
according to the following process:
1. The solar cable is fed through the cable
gland on the RCU enclosure a suitable
amount to allow connection into the
power supply compartment. The cable
gland (item D in Figure 3 on page 10)
should be tightened to clamp the solar
cable.
2. Positive (red) and negative (black) of the
solar cable are connected into the power
supply compartment terminal block and
tightened in place. Ensure the correct
wire is installed into the matching
terminal block.
3. The plastic wire entry blanking plate
suitable for the solar cable is selected
from the various plates provided and is
slid into place over the solar cable.
4. Fit the power compartment cover and
screw in place (torque 13 in-lb (1.5 Nm))
using screwdriver.
Figure 28: Solar cable connection details
A
D
Item
Description
A
Positive wire (red)
B
Negative wire (black)
C
Ground wire
D
Wire-entry blanking plate - solar
Reversing the connections to the solar panel will
not cause damage to the RCU electronics in the
short term; however this should not be allowed to
persist since at high-sunlight conditions for long
periods the RCU electronics could be damaged by
the current from the panel in high-sunlight
conditions.
Shorting the solar supply terminals to
ground will not damage the RCU.
B
C
33
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