Itm Accutek III, Руководство по эксплуатации

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Section 7
Leakage
(Insulator Integrity Testing)
NOTE: It is very important to disconnect all connections to the ignition
source (eg. ignition generator or solid state module) and to the ignition
coils when performing the following tests. The ignition shut down lead
must also be disconnected at the ignition harness for the following tests.
The ACCUTEK III incorporates a high voltage source capable of sup-
plying from approximately 200 V.D.C. to approximately 900 V.D.C. to
the device under test. Low current output from the ACCUTEK III
reduces any danger to safe levels but contact with the high voltage out-
put should be avoided.
LEAKAGE TEST
The TEST switch in Leakage mode and MEASUREMENT switch in
PEAK VOLTS mode allows the user to select the voltage used for the
LEAKAGE test (approximately 200 to 900 volts). With the TEST
switch in LEAKAGE and the MEASUREMENT switch in any posi-
tion except PEAK, the behavior is as follows: The Accutek III turns
on the high voltage for 2 minutes in the LEAKAGE position once the
PUSH TO TEST switch is depressed. Any time the PUSH TO TEST
switch is pressed again, the 2 minute timer is restarted. Once the 2
minute timer expires, OFF is displayed and the high voltage oscillator
is turned off. Whenever the TEST is changed to any other switch
position, the 2 minute timer is immediately caused to expire and the
high voltage is turned off. A display reading of ‘----’ indicates no valid
measurement has been acquired and will change to show ‘OFF’ when
the 2 minute timer expires. While the 2 minute timer is not expired, the
value of the measured impedance is shown.
7.1 Leakage Testing Wiring Harnesses
The ACCUTEK III has the ability to generate a very high voltage
(approximately 900 V.D.C.) and can be used to test ignition harnesses by
determining if the wire insulation has failed or is failing and allowing
current to go to ground before it reaches its intended point.
7.11 Disconnect the shutdown lead, ignition source and all igni-
tion coils.
7.12 Set the TEST switch to the LEAKAGE position and the
MEASUREMENT switch to PEAK VOLTS.
7.13 Depress the PUSH TO TEST switch and set the voltage you
wish to test with by adjusting the VOLTAGE SET poten-
tiometer.
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