Positron 3782091C/50, User Manual

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Using the Composite Insulator Tester & Software
35
5.2.1 Scanning an Insulator
5.2.1.1 Performing a “V” Scan or Horizontal scan
Once the Probe is securely fastened to the sled and the hot stick is attached, follow this procedure,
per Figure 14:
1. Following the instructions of the Tablet Operator, if the LED is not flashing, press the Push-
button on the Probe (See Figure 13) and place the Insulator
Tester as close as possible to the low voltage end of the
composite (polymeric) insulator.
2. Slide the tester along the insulator toward the high voltage end
of the insulator. A tone will sound each time a reading is taken
at each insulator skirt (shed).
3. Remove the Insulator Tester from the insulator and wait for instructions from the Tablet
Operator.

The Tablet Operator will Download the scanned data to the Tablet/Laptop PC to view the
resulting graph and will Accept or Reject the scan. In either case, the data is wiped from
the Probe leaving the Insulator Tester ready for the next scan.

The Tablet Operator selects Send Alert to Probe and the annunciator tone attracts the
attention of the Probe Operator so the Tablet Operator at Ground level communicates
the next step to the Probe Operator.

This process is repeated for each insulator.
Figure 14
Figure 13
Performing a “V” Scan
Place the Probe close to the low voltage end of the insulator and slide the Probe
along the insulator, moving the Probe from 1 skirt (shed) per second up to 10
skirts (sheds) per second, toward the high-voltage end and withdraw the Probe.
1. To facilitate the manipulation,
the hot stick should be almost
parallel to the insulators.
2. The angle should be adjusted as
shown on the above figure.
3. Apply constant pressure
downward to keep the sled
against the insulator at all times.