Fluke FT120, FT140 manual Single-Pole Phase Test, Voltage Test with RCD Trip Test

Fluke T100/120/140

Users Manual

Single-Pole Phase Test

•To carry out single-pole phase tests ouch the Accessible electrode (11) and connect instru- ment test probes to unknown contact.

•The single-pole phase test starts at an AC voltage of approx. 100V (pole > 100V AC).

•When using single-pole phase tests to deter- mine external conductors the display function may be impaired under certain conditions (e.g. for insulating body protective equipment on insulation locations).

•The single-pole phase testing is not appro- priate to determine whether a line is live or not. For this purpose, the double-pole voltage test is always required.

The LED (5) is illuminated in the display.

Voltage Test with RCD Trip Test

(not T140 VDE)

During voltage tests in systems equipped with RCD circuit breakers, a RCD switch can be trip- ped at a nominal residual current of 10mA or 30mA by measuring the voltage between L and PE.

The RCD trips.

To avoid RCD tripping a test has to be car- ried out between L and N during approx. 5s. Immediately afterwards, voltage tes- ting between L and PE can be carried out without RCD tripping.

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