Powerware 9315 operation manual To Place the UPS in Normal Mode

The following describes the switches on the Control Panel (see Figure 7):

·The MODE switch is a two-position rotary switch that controls the manual transfer of the UPS to and from Bypass mode. The MODE switch is used to:

---Place the critical load in Bypass mode when the UPS is operating in Normal mode and the bypass source is within acceptable limits. If the transfer does not occur within 2 seconds, an alarm sounds.

---Prevent transfer to Normal mode when the UPS is in Bypass mode.

---Shut down the power processing unit (inverter and rectifier) of the UPS.

·The BATTERY switch is a two-position rotary switch that allows you to manually shunt trip the battery breakers in remote cabinets.

·The circuit breaker (CB1) switch controls the operation of the rectifier and inverter. If CB1 is on (closed), the rectifier turns on when the START switch is activated and the proper voltage is at the input terminals.

·The PUSH TO RESET pushbutton is described in the “Resetting the UPS System after Load Off” section of Chapter 12.

·The START switch activates the power controls on the Control Panel. The START switch is center-biased (the key will rest only in the upright position). Its operation is similar to that of an automobile ignition switch. After setting the operator controls, you turn the START switch to the right momentarily to activate the controls. When you release it, it returns to the upright position.

The following sections describe how to operate these controls to start, stop, or change the operating mode of the UPS.

To Place the UPS in Normal Mode:

1.Close Input Power Feeder breaker

2.Be sure the Load Off PUSH TO RESET pushbutton is pressed in.

3.Turn the BATTERY switch to NORMAL.

4.Turn the MODE switch to NORMAL.

5.Move the CB1 switch to ON.

6.Turn the START switch to the right momentarily.

The rectifier turns on, then the inverter turns on. When the inverter reaches full voltage, it turns on and supplies power to the critical load. It takes less than 1 minute for the UPS to achieve Normal mode.

If a bypass source is available when you turn the START switch on, the critical load is immediately supplied by the bypass source in Bypass mode until the inverter turns on and the UPS transfers to Normal mode. The status indicators on the Monitor Panel indicate when the UPS is in Bypass mode and Normal mode.

7.Close battery breaker(s).

16	Powerware 9315 (200 kVA ---300 kVA) Operation
	164201036 Rev. D 041500