Ups Protection System; System Protection Features; System Protection Functions - Toshiba 1600EP SERIES Instruction Manual

UPS Protection System

System Protection Features

The following schematic shows the electrical locations of the protection devices on the 1600EP models.
MCCB
Input
power
Surge
absorber
Input
Abnormal

System Protection Functions

The following charts show the built-in UPS system fault protection functions on all the 1600EP models.
Protection Item
LCD Message
Cause
Operation Mode
After Fault
Audible Alarm
Visible Alarm
Relay Contact
Alarm
Auto-retransfer
1600EP Series Instruction Manual
Bypass
Input
fuse
Line Filter
Batteries
Low Battery
Level
BUILT-IN UPS FAULT PROTECTION FUNCTIONS
Output Overvoltage
OUT-OV
Control malfunction;
chip error
Bypass operation;
Chopper and inverter are stopped.
Yes; continuous buzzer
Red Fault LED "ON"
Fault relay closed;
Bypass relay closed
No
Overcurrent
*Static
switch
Output
fuse
Rectifier/
Inverter
Chopper
+
*Switches are
solid state
_
devices
Overheating
Output Undervoltage
OUT-UV
Control malfunction;
wire disconnected
Current Limit
Overload
Isolation
Transformer
Line Filter
Power flow
Overvoltage/
Undervoltage
Output Overload
OVERLOAD
Overload; Short circuit at load
Inverter OL: Transfer to bypass;
Bypass OL: inverter, chopper
see 'Audible Alarm Functions' on
page 31
Inverter OL: no fault lamp
Bypass OL: fault lamp "on"
Fault relay open;
Inverter OL: Bypass relay closed
Bypass OL: Bypass relay open
Inverter OL: Yes if bypass is OK
Bypass OL: No
Output
power
47