Powerware 5075 kVA operation manual Using the Operating Controls, UPS Control Panel

Using the Operating Controls

Although the operating controls appear easy to use, you should read these instructions and thoroughly understand how the controls work before attempting to use them. Refer to oneline drawing 164201261---3 in Appendix A to clarify control functions. Refer to Chapter 9 --- Using the Monitor Panel for instructions on using the monitor panel.

CAUTION:

Incorrect use of the power controls can cause a loss of power to your critical load.

The following paragraphs describe the switches on the Control Panel (see Figure 34).:

•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.

	NORMAL
	OFF
PUSH
TO RESET
	BATTERY
	NORMAL
	BYPASS
START	MODE

Figure 34. UPS Control Panel

•The BATTERY switch is a two-position rotary switch that allows you to manually enable or disable the Battery Breaker CB2. The battery switch is also used to reset the DC to DC converter if the converter shuts down during normal operation.

•The PUSH TO RESET pushbutton is described in the “Resetting UPS System after Emergency Power Off” section of this chapter.

64 Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation

164291261 Rev. F 111503