Vanguard UPS S2 User Manual download pdf (Page 10)

Operating Procedures UPS-S2

5.0 UPS-S2 CABLE CONNECTIONS

Always connect the UPS-S2 to the substation ground before connecting any test cables.

A typical connection is shown in figure 3

Figure 3 Typical UPS-S2 Cable Connection

6.0 UPS-S2 OPERATIONAL PROCEDURES

6.1 UPS-S2 DC 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 a DC volt-meter to the UPS-S2 DC output.

7. Select the DC voltage output on the UPS-S2.

8. Turn on the UPS-S2 power switch.

9. Turn the Voltage Control Knob to set the DC voltage.

10. Turn off the UPS-S2 power switch.

11. Connect the DC 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 DC control circuit.

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Vanguard UPS S2 User Manual Page 10