Vanguard UPS S2 - Manual (Page 11)

Operating Procedures UPS-S2 
8
6.2 UPS-S2 AC Supply Setting
The following steps are recommended for a typical circuit breaker operation:
1. Ground the UPS-S2 to a substation safety ground.
2. Make sure theUPS-S2 power switch is in the off position.
3. Turn the Voltage Control knob to zero output.
4. Set the Voltage Range switch to “LOW RANGE”.
5. Connect AC power to the UPS-S2.
6. Connect an AC volt-meter to the UPS-S2 AC output.
7. Select the AC voltage output on the UPS-S2.
8. Turn on the UPS-S2 power switch.
9. Turn the Voltage Control Knob to set the AC voltage.
10. Turn off the UPS-S2 power switch.
11. Connect the AC voltage leads to the circuit breaker control circuit.
12. Turn on the UPS-S2 power switch.
The UPS-S2 is now powering the circuit breaker AC control circuit.