9. Signal terminals
III. Operation Steps
1. Correctly connect "Cable Fault Location System" and ground, faulty cable, AC
220V power line according to the external wiring diagram. It can also be connected
via extension cable drum if equipped with one.
2. If you are preparing to locate the cable fault, connect the signal test line on "Cable
Fault Location System" control panel with corresponding signal port on the pulse
reflect meter (TDR). Best use its own battery for TDR.
3. Turn on the power switch; the instrument will do self-test for about 15 seconds.
You can carry out subsequent operations if the self-test is passed. The buzzer will
prompt you by long and short syllable if the self-test isn’t passed.
4. Adjust the ignition time knob and test voltage gear button, and test mode gear
button (if the test instrument is in high-voltage charged state or start state, the test
voltage, test mode adjustment operation is invalid).
Ignition time: High-voltage ball-gap ignition intervals on impact, usually
adjusted for 4-12 seconds.
Each test voltage gear selection: The lower voltage gear you select, the greater
the impulse condenser capacity is, and the greater the impact energy the fault cable
get at the same voltage when you are sure that the cable is already breakdown, which
is conducive to fault location, location.
The meaning of each test method is as following:
A. Multiple pulses (stable arc): When doing cable high impedance fault distance test,
contrast the waveform of not breakdown and breakdown on same-phase fault on one
screen.
B. Current sampling: When doing cable high impedance fault distance test, it
