Operation 25
Figure 9 System Control Cabinet Operator Controls (SCCB Pictured)
Item Description Function
1 UPSOutput Circuit
Breaker
Thismotorized circuit breaker connects the criticalload to the UPS system output.
2 SystemBypass Circuit
Breaker
Thismotorized circuit breaker connects the critical load tothe bypass line.
3 OperatorControl Panel Referto Figure 10 for controls available on this panel.
4 InterlockButton
(onrear of ControlPanel)
Refer to Figure 11.
5 CloseBypass Switch
(behinddoor)
Refer to Figure 11.
6 BypassReset Switch
(behinddoor)
Refer to Figure 11.
7 StaticSwitch Disconnects
(behinddoor)
Thesemanually operated switches disconnect the static switch from thebypass
lineand from the critical load. They are normally ON (closed). Turn them OFF
(open)only to isolate (disconnect) the static switch formaintenance procedures.
8 ResetSwitches (SW1) for
StaticSwitch Disconnects
(behinddoor)
Pressthese two switches before closing Static Switch Disconnects when
recoveringfrom a shutdown that includes loss of Control Power. Green LED on
meansControl Power is available. Red LED on means Reset Switch needs to be
pushed.
9 ControlPower Disconnect
(behinddoor)
NormallyON. Turn OFF Control Power only when required for maintenance
procedures.
DISCONTINUED
PROD U C T