16
Powerware 9315 (200 kVA---300 kVA) Operation
164201036 Rev. D 041500
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 w ithin acceptable limits. If the transfer does
not occur within 2 seconds, an alarm sounds.
--- Prevent t ransfer t o Normal mode when t he UPS is in Bypass mode.
--- S h u t d o w n t h e power processing unit (inverter and rectifier) of the UPS.
· The BA TTERY 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 O ff ” 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 t he 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.
IfabypasssourceisavailablewhenyouturntheSTART 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 Pa nel
indicate when the UPS is in Bypass mode and Normal mode.
7. Close battery breaker(s).
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