Major tech MT474 Instrukcja obsługi - Strona 10

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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 " L" 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.

Ÿ 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.

"L" signifies that the supposed phase L1 is the actual phase L2 and the

supposed phase L2 is the actual phase L1.

When re-testing with exchanged test probes the opposite symbol has to

be illuminated.

Voltage testers are equipped with a measurement point illumination

feature. Thus, working under bad lighting conditions (e.g. division switch

cabinets) is made easier. Press button for measurement point illumination

(10) on instrument rear.

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