Megger IDAX 300, Руководство пользователя

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IDAX 300/322/350 ZP-AG03E AG033586EE
6 APPENDIX AERROR MESSAGES
6
A
ppendix A
Error messages
6.1 Error messages
No. Message Explanation
347 Output voltage is not
within specified levels. The applied voltage differs
from the desired.
361 Overvoltage An overvoltage occurred.
364 Measured capacitances
don’t match Disagreement between val-
ues of capacitance measured
for different configurations
365 Specimen capacitance
below limit. Measured capacitance below
specified limit.
366 Specimen capacitance
above limit. Measured capacitance above
specified limit.
367 Measured DC current>-
MaxDCCurrent Measured DC current ex-
ceeds limits set by MaxDC-
Current variable.
368 Measured hum current>-
MaxHumCurrent Measured interference (hum)
current exceeds limits set by
MaxHumCurrent variable.
(347) Output voltage is not within
specified limits
Measured output voltage is outside specified limits.
Possible reasons and countermeasures
1.
Voltage electrode, Generator, is grounded:
▪
check measurement set-up and disconnect ground
▪
change measurement configuration if terminal of
test object cannot be disconnected from ground
2.
Voltage electrode, Generator, is connected to
measuring electrode, Input or Ground:
▪
check measurement set-up and disconnect
measuring or guard electrodes from the voltage
electrode. Voltage electrode, Generator, must not be
connected to either measuring or guard electrode
3.
High stray capacitances to ground or high capaci-
tance of the test object:
▪
Lower the highest frequency used in measurement
plan (see also Measurement variables)
▪
Lower the InitFrequency in the measurement plan
(see also Measurement variables)
▪
Lower the test voltage
4.
If you try to use an old version of IDAX software,
version 3.2 or earlier but the firmware in IDAX is
for IDAX software 4.0 or newer, the IDAX software
do not understand the incapability and it usually
result in error 347.
▪
Please check IDAX software and if version 3.2 or
earlier upgrade to 4.0 or newer (this new software
will automatically upgrade firmware if necessary).
(361) Overvoltage
Measurement aborted due to overvoltage detected on
measuring electrode, Lo. Potential difference between
signal ground and real ground exceeds limiting value.
Possible reasons and countermeasures
1.
Ground electrode is not connected to true ground:
▪
connect Ground electrode to true station/substation
ground
2.
Transients caused by accidentally disconnected
ground connection:
▪
check ground connection
(364) Measured capacitances don’t
match
Values of capacitance measured for different
configurations, the uST, GST-Guard and GSTGround
are in disagreement.
Possible reasons and countermeasures
1.
When performing UST measurement, measuring
electrode, Lo, is connected together with Ground
electrode or Lo is connected to ground:
▪
check measurement set-up and make sure that
measuring electrode, Lo, is connected to a
nongrounded terminal of the test object and that
Ground electrode is connected to ground.
(365) Specimen capacitance below
limit
Measured capacitance below limit specified in C-file
by MinSpecimenC.
Possible reasons and countermeasures
1.
Measured capacitance higher than 10 pF.
Specimen size is very small which results in low
value of capacitance:
▪
change limit set by MinSpecimenC to an
approximately 10% lower value than measured
capacitance