Major tech MT478 Manuale d'uso - Pagina 12

Sfoglia online o scarica il pdf Manuale d'uso per Apparecchiature di prova Major tech MT478. Major tech MT478 16. Voltage tester

5. Operation

5.6 Resistance Test

• The Tester measures low ohm resistance between 1Ω and 1999Ω at a

resolution of 10.

To do a resistance test:

• Do a Voltage test to make sure the UUT (unit under test) is not live.

• Push and hold the measurement point illumination button (15) for 2

seconds .

• Connect the two test probes with the UUT and read value on the display.

• Push and hold the measurement point illumination button (15) for 2

seconds to turn the function oﬀ and save battery power the function

automatically.

5.7 Rotary Field Indication

• The voltage testers are equipped with a double-pole rotary ﬁeld indicator.

• The rotary phase indication is always active. The symbols "R"or " I.:' are

always displayed. However, the rotary direction can only be determined

within a three-phase system. Here, the instrument indicates the voltage

between two external conductors.

• Connect the instrument test probe with the supposed phase L2 and the

handle test probe with the supposed phase L1.

The voltage and the rotary ﬁeld direction are displayed. "R" signiﬁes that

the supposed phase L1 is the actual phase L1 and the supposed phase

L2 is the actual phase L2.