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5.0
Operating the UPS
5.2
Overcurrent
MCCB1
Input
Input
Abnormal
Overcurrent
MCCB1
Input
System Protection Features
The schematic shown below depicts the electrical locations of the protection devices
on the 2000 VA 120V UPS model.
Input
Xfmr
Rectifier/
Charger/
Chopper
Low Battery
Level
The schematic shown below depicts the electrical locations of the protection
devices on the 2000VA 230V UPS model.
Input
Xfmr
230V
Rectifier/
Charger/
Chopper
Input
Low Battery
Abnormal
Level
Note:
The three UPS rear panel output receptacles are supplied from the UPS inverter
section through separate 20A breakers (10A for the 230V model). Thus, an
overload on one of the receptacle sets can cause a loss of power to it while the
other receptacle sets remain active. If all of the UPS indicator lights appear
normal and power is not available at one of the receptacle sets, check the
associated output breaker.
TOSHIBA
Bypass
Inverter
+
Batteries
-
Overheating
Bypass
Inverter
+
Batteries
-
Overheating
16
Overvoltage/
Undervoltage
MCCB
2
3
4
Current Limit
Overload
Power flow
Overvoltage/
Undervoltage
Output
Xfmr
230V
MCCB
2
3
4
Current Limit
Overload
Output 2
Output 3
Output 4
Output 2
Output 3
Output 4
Power flow
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