ST–III Series Power Supplies
USER INSTRUCTIONS
Cabling sizes:
DC cables must be sized to carry the maximum full load current and not exceed the
system volt drop requirements. The following cable sizes are recommended.
Current
AWG
mm
2
0 -10 A
18
1.0
10 - 20 A
14
3.0
20 - 30 A
10
5.5
Where cables pass through any part of a metal panel or cover, ensure that a cable gland or bush is
fitted to the hole.
Battery Connection Procedures:
Battery should be connected as per the following steps.
Turn power supply off and all 12 volt equipment connected to power supply.
Connect positive battery terminal to “Batt +VE” power supply terminal.
Connect negative battery terminal to “Batt -VE” power supply terminal or negative chassis ground.
If battery is connected to chassis, ensure a connection exist from chassis to “Batt –VE”
terminal of power supply.
Battery Disconnection Procedures:
Battery should be disconnected as per the following steps.
Turn power supply off and all 12 volt equipment connected to power supply.
Disconnect negative battery terminal connection to “Batt –VE” power supply terminal or negative
chassis ground.
1.
Disconnect positive battery terminal to “Batt +VE” power supply terminal.
Batteries
When using batteries with this product always consult with the battery manufacturer for a detailed
description of the installation, use and maintenance of the battery.
Ensure battery has been charged for several days before a major camping trip (Leave the power
supply on for at least 2 – 5 days with battery connected).
This product is suitable for charging 12V-Sealed Lead-Acid (SLA) batteries including Valve-
Regulated Lead-Acid (VRLA) batteries both Absorbed Glass Mat (AGM) and Gel batteries. One or
two batteries with max.100Ah capacity each can be charged. Charging current is limited to 10A
(ST20-II) and 15A(ST35-II).
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