Check Ac Voltage (Trms); Data Hold Function; Phase Test; Rotating Field Test (Max. 400 V) - TESTBOY Profi III LCD+ Bedienungsanleitung

Check AC voltage (TRMS)

When placing the probes on an AC voltage within the rated voltage range, the voltage is indicated in Volts and „AC"
also appears on the display. The mains frequency is also indicated. From a voltage of approx. 35 V, the hazardous
voltage is indicated by a flashing LED behind the display and an acoustic signal is indicated.
If the batteries are completely discharged, if voltage is applied, a warning triangle is indicated on the display.

DATA HOLD function

By briefly activating the „L.H." button (save data), a measurement value can be saved on the LC display. The
„DATA HOLD" function is indicated on the display by the symbol „D.H." and can be switched off by again briefly
activating the button.

Phase test

Contact a conductor with the probe L2. If a phase is applied, min. 100 V~, appears on the LC display „<L".
For determining the phase conductor, the perceptibility of the indication can be impaired, e.g. by insulating fixtures
to protect against direct contact, in adverse positions, for example on wooden ladders or insulating floor coverings,
of a voltage not earthed or also in adverse lighting conditions.

Rotating field test (max. 400 V)

Protective clothing and insulation locations can impair the function.
Embrace the complete area of the handles L1 and L2
Place the probes L1 and L2 on two external conductors (phases) and check to see whether the external conductor
voltage of, e.g. 400 V is applied.
A clockwise sequence (phase L1 before phase L2) is present if the letter „R" appears on the display
An anticlockwise sequence (phase L2 before phase L1) is present if the letter „L" appears on the display.
Determination of the phase sequence must always be carried out with the probes transposed. Thereby, the phase
sequence must change.
Note:
The phase sequence test is possible in earthed AC voltage mains supply from 200 V, 50/60 Hz (phase to phase).

One-hand test

Locking both hand parts is possible due to the distance piece on the measurement line. The distance of the meas-
urement probes can be adjusted by simply rotating. (Schuko/CEE)

Lighting of the measurement location

Lighting of the measurement locations is switched on and off by prolonged activation of the „L.H" button (save data).

Continuity test

Place the test probes on the line to test, fuse or similar. For a resistance of 0 - 2 k, the resistance values appears
on the display and an acoustic signal sounds up to approx. 50 . If the measurement value is > 2 k, the over-
range indication „OL" appears on the display.

FI/RCD trip test

The Testboy
®
buttons (FI\RCD). The FI/RCD (max. 30 mA) is checked between the phase and circuit breaker
(max. 240 V).

Backlighting

The display backlighting is permanent
®
Testboy Profi III LCD+
Profi III LCD+ has a load that makes it possible to trigger a FI/RCD circuit breaker using two
Operation
15