Clinton DC-1, Инструкция по эксплуатации, Страница: 40 / 58

Models DC-1, -10, -20B DC Spark Testers
DC-1, -10, -20B Instruction Manual – Page 39
Testing Your Product
CAUTION: During installation, the spark tester was programmed to report and
respond to faults in specific ways. Internal settings must not be changed except
by qualified personnel.
1. Place your product in the bead chain electrode. Be sure the wire is
centered in the electrode.
2. Verify that the product conductor(s) are grounded. If this is not the case,
do not proceed. Contact service personnel to review the spark tester
installation.
3. Turn ON the external disconnecting device to bring power to the spark
tester.
4. Turn the spark tester power switch ON. Push the front panel ‘R’ (Reset)
button and the ‘CR’ (Counter Reset) button if necessary, so that the fault
counter displays 0.
5. Start the wire line. Press the VOLTAGE ADJUST up arrow button until the
voltmeter indicates the desired test voltage value.
6. CAUTION: Do not touch the wire while it is being tested.
7.
The spark tester will operate in accordance with the settings selected
du
ring “Installation” and “Front Panel Programming.”
CAUTION: When the spark tester is operated with bare wire in the electrode for
an extended length of time, i.e., several minutes or longer, damage to the
equipment may result. This condition should be avoided, either by switching the
spark tester OFF manually or by a zero speed switch operated by the machinery.
Similarly, if the HV remains ON in the electrode while your wire line is stationary,
the product insulation within the electrode will heat and there is a
danger of
combustion. Refer to the table “Terminal Block Wiring ” in the Installation sec tion
of this manual on how to safely install your spark tester.
Preparing your Product for Testing
•
Ensure that the product to be tested is dry as it enters the spark test electrode. A
continuous film or sheath of water on the product can provide an effective
electrical path to the nearest grounded point. Surface leakage can trigger a false
count in the spark tester.
•
Ground the product conductor(s). This is a safety precaution as well as a
requirement of most spark test specifications. Please see the paper, “Grounding
of Conductors during the Spark Test,” included in this manual.
•
Position the product in the center of the electrode, through the safety end
guards. Be sure it will remain centered as it is being drawn through the electrode
assembly. Lateral wire vibration which may be imperceptible can cause phantom
faults to register on the spark tester. Properly positioned guides installed at entry
to and exit from the electrode can eliminate this condition.