Page 20 - FL-20A Instruction Manual
Model FL-20A Cable Fault Locator
Performing an Open Tests
Caution.
It is imperative that only personnel trained in the dangers of high voltage
operate this equipment.
A stored charge in a test cable can kill!
A charge
can remain in a cable if the cable has not been properly discharged, even
when it is no longer attached to the FL-20A.
Caution. Discharge all conductors of the test cable prior to connecting
to the FL-20A Fault Locator to remove any stored charge from a previ-
ous operation. A stored charge in the cable can be lethal.
Note: to determine the accuracy of the Opens test that you can expect
on your test product, please refer to the chart entitled, “Cable Capaci-
tance Chart.”
1. Review the Opens Parameters settings that have been entered
before proceeding with the test. They are found in the Settings
menu.
2.
Select the first conductor to be tested. Strip back by 1” and
insert the exposed conductor into the red test probe. Be sure
that insulation does not obstruct the connection between the
metal in the probe and the exposed conductor. Strip the other
end of the conductor and insert into the blue test probe.
3. Ground all untested conductors.
On one end of the test cable,
strip back all conductors not under test by 1”, carefully bunch
them together with the cable shield so that they make a good
connection with one another, and insert into the green ground
probe. Be sure that insulation does not obstruct the connection
between the metal in the probe and the exposed conductors.
NOTE:
If conductors are too large to insert into the probes, see
the section entitled, “Testing Large Cables with the FL-20A.” It
is critical that conductors be connected properly. Poor connec-
tions can be dangerous to personnel. Additionally, the FL-20A
graphics display may not function correctly due to noise.
4. At the main menu, press the Opens button to begin a test for
opens. The screen will guide you through the test.
5. If the Printer Installed setting is ON, a screen will appear
allowing you to enter a reel description. The reel descrip-
tion will appear on a printed test report, if one is desired.
6. Enter the Test Frequency. If the Lock Test Frequency setting is
ON, this screen will not be displayed. Under most circumstances,
the Test Frequency should not be changed from the default.
