Power-Sure™ 700 — Three Phase Power Conditioners

3.2Troubleshooting Guide

SYMPTOM

PROBABLE CAUSES

 

 

1. No Output on One or More Phases.

A.Blown Fuse.

B.Defective SCR or Power Module

C.Defective Control Card.

D.Defective Sense Card.

E.No Input.

2.

Output is to High or to Low.

A. Control Card Adjustment.

 

 

 

B. Defective Control Card.

 

 

 

C. Defective Sense Card.

 

 

 

D. Defective SCR or Power Module

 

 

 

E. Input Out of Range.

 

 

 

3.

Input Breaker Tripping Off.

A. Defective Breaker.

 

 

 

B. System Overloaded.

 

 

 

C. Over/Under Voltage Detection is Shutting

 

 

 

Down System (See Symptom #2).

 

 

 

D. Defective Over/Under Detection Card.

 

 

 

E. Shorted Taps.

 

 

 

4.

Blowing Semi-Conductor Fuses.

A. Shorted SCRs or Power Modules

 

 

 

B. Output Loads Shorted.

 

 

 

 

5.

No Output Voltage.

 

A. Defective Over/Under Output

 

 

 

Detection PCB.

 

 

 

 

 

 

 

WARNING:

THERE ARE DANGEROUSLY HIGH VOLTAGES PRESENT WITHIN THE

 

 

ENCLOSURE OF THE POWER SUPPLY SYSTEM. UNDER NO CIRCUMSTANCES

 

 

SHOULD ANY PERSON REACH WITHIN THE ENCLOSURE OF THIS EQUIPMENT.

ALL SERVICE TO THIS PIECE OF EQUIPMENT SHOULD BE PERFORMED BY

QUALIFIED PERSONNEL ONLY.

3.3Troubleshooting Power Line and Electrical Connections

NOTE:

Circuit diagrams in this manual are for reference only. Always refer to the actual

 

circuit diagrams received with the system.

 

 

This procedure is written in a specific order and must be used from start to finish when troubleshooting. Any steps skipped over may cause serious damage to the system.

Required equipment for troubleshooting the Power-Sure™ 700 is a True RMS Digital multimeter, SCR tester, common hand tools, and a spare parts kit.

3 —4

Maintenance

86-108814-00 B01