4.17
Current Clamp Meter (code PII79175)
The following image exhibits the current clamp meter:
Figure 27 – Current Clamp Meter
When it is necessary to use the STSG and STLG options to execute the test, the options are connected to a transmission
line. The line is put out of service, and connected to earth on both sides. Before connection to the HV line, it is necessary
to measure the current flowing into the ground connections, using a clamp meter, to evaluate the residual voltage
coupling.
The following table lists the Current Clamp Meter main characteristics:
Characteristic
Value
Maximum current
400 A AC
Digits
4
Accuracy
± 2 % + 5 digits
Clamp opening
37 mm
Table 69 - Current Clamp Meter main characteristics
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