Data Hold Function; Phase Test; Rotating Field Test (Max. 400 V); One-Hand Test - TESTBOY Profi III LCD Bedienungsanleitung

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 activat-
ing the button.

Phase test

Contact a conductor with the probe L1. 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 cover-
ings, 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 let-
ter "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 meas-
urement line. The distance of the measurement probes can be adjusted by
simply rotating. ( Schuko/CEE)
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Testboy Profi LCD Plus
Operation
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