testing and sends the testing result to the tester. After the tester is powered on, it enters receiving
state automatically. If the tester receives signal transmitted by the high-voltage clamp sensor, it
displays the current of primary circuit at high-voltage end in real time; if not, it displays “No signal”
for primary current. If the tester displays “OL” for primary current, it indicates the measured primary
current is over the upper range specified by the high-voltage clamp sensor. To remove the high-
voltage clamp sensor from the measured conductor, please pull back the insulation stick (keep the
leading sector perpendicular with the conductor), as shown in Figure C.
Warning! For safety sake, please remove the clamp sensor from the measured
conductor after testing.
Overhead current can be measured by the tester.
6
