HVTest PDF1000, Руководство пользователя

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branch top that close to fault region, or connect to DC bus bar at the bottom of
loop. When detecting, signal generator should be always connected to power
supply terminal of DC branch, and the fault detector and the signal receiver are
always testing at the load end of DC branch.
3. Signal receiver
Fig.2 Panel layout for signal receiver
Port for A clamp: Connect "A" clamp, the clamp is big clamp.
Port for B pliers: Connect "B" pliers, this clamp is a small pliers.
LCD: dot matrix LCD display.
Power switch: Press "ON / OFF" key to start up/shut down.
Instructions for Signal receiver:
With calipers respectively clamp all main circuit that were associated with
fault bus bar, and then observe LCD display. Use number 0-19 from low to
high to indicate insulation value, “01” indicating poor insulation, “19” indicating
good insulation. When LCD displays a lower value, you can judge fault is on
this main circuit, and then with calipers measure branch circuit that linked to
faulted main circuit, through LCD display value you can determine broken
branch, and so on, using the same method can find the final faulted branch.
Found the earthed branch, for the fault point you can do location detection.
When testing, user can use dichotomy to detect faulted area. In each test, the
Port for A clamp
Port for B pliers
LCD
Power switch