Sharp CD-M4000 Guia do Utilizador descarregar pdf (Página 103)

M4000 Insulation Analyzer User Guide

72A-1230 Rev. F 4-13

July 22, 2005

Cannot begin a test; the test

set trips, with an overcurrent

error message

1. Isolate the cause by restarting a test after

alternately:

• Disconnecting the High Voltage Test

Cable from the M4100

• Disconnecting the High Voltage Test

Cable from the specimen (but still

connected to the M4100)

If the symptom disappears, test the cable

by referring to ”Checking the High

Voltage Test Cable” on page 4-42.

Replace the High Voltage Test Cable if

necessary.

2. Check connections to the specimen.

3. The size of the specimen may be beyond

the capacity of the test set, or the point

to which the High Voltage Test Cable is

connected may be grounded.

4. Check the HV Pothead for tracking,

arcing, pothead separation and

cleanliness. If it is faulty, replace it.

Table 4.4 M4100 Troubleshooting from Symptoms (Continued)

Symptom Suggested Action

DANGER

Avoid personal contact with

the High Voltage Test Cable

while it is connected to the

M4100. Death or severe

injury is an imminent risk.

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Sharp CD-M4000 Guia do Utilizador Página 103