UPS Protection System

System Protection Features

The following schematic shows the electrical locations of the protection devices on the UPS.

Overheating Overcurrent

Current Limit

Overload

Overvoltage/

Undervoltage

Input

Low Battery

Abnormal

Level

System Protection Functions

The following charts show the built-in system fault protection functions on all the UPS models.

Built-In UPS Fault Protection Functions

Protection Item

Output Overvoltage

 

Output Undervoltage

Output Overload

LCD Message

OUT-OV

 

OUT-UV

OVERLOAD

 

 

 

 

 

Cause

Control malfunction;

 

Control malfunction;

Overload – Short circuit at load

chip error

 

Fuse opened; Load issue

 

 

 

Operation Mode

Bypass operation – Chopper and inverter are

Inverter OL: Transfer to bypass;

Bypass OL: Inverter, chopper

After Fault

stopped

stopped

 

 

 

 

Audible Alarm

Yes – Continuous buzzer

See Audible Alarm Functions on

page 26

 

 

 

 

Visible Alarm

Red Fault LED on

Inverter OL: Fault lamp off

Bypass OL: Fault lamp on

 

 

 

 

Relay Contact

Fault relay closed

Fault relay open;

Inverter OL: Bypass relay closed

Alarm

Bypass relay closed

Bypass OL: Bypass relay open

 

 

 

 

Auto-retransfer

 

No

Inverter OL: Yes if bypass is OK

 

Bypass OL: No

 

 

 

 

42

1600EP Series Instruction Manual

Page 50
Image 50
Toshiba 1600EP Series manual UPS Protection System, System Protection Features, System Protection Functions

1600EP Series specifications

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