Operation
Figure 3–1 2T-HA10F-CD UPS Front Panel
MKV−040000216−03−91−RAGS
Normal
Bypass
On Battery
Fault
Low Battery
ALARM
SILENCE
AC INPUT
1
0
1
0
BATTERY
Status Lights
Ventilation
Alarm Silence
Button
Battery
Circuit Breaker
AC Input
Circuit Breaker
3.1.1 UPS Controls
The following sections describe the controls for the UPS unit.
3.1.1.1 AC Input Circuit Breaker
The ac input circuit breaker on the front panel must be ON before the UPS can
receive power from an ac input source and charge the batteries. It opens and
closes the circuit between the ac input power and the UPS. When the ac input
circuit breaker is OFF, or the ac input power has failed for other reasons, the
UPS will draw power from the batteries (if they are available).
3–2 Operation