Instructions

Proceed as follows to identify the 3-phase rotating direction:

- TurntheDMMonandselectmeasuringfunction“Motor”.

Thedisplayshows“AC”andtheunit“V”.

- Plug the red measuring line into the V measuring jack (E)

and the black measuring line into the COM measuring jack

(D).

- Keepthebutton“SELECT”pressedforapprox.2seconds.

Twobeepsareoutputandthelockicon(H19)willash.

The automatic measuring range setting is deactivated and

the 600 V-range is selected. The display will show approx.

0.0 V.

- Connect the black measuring prod to the outer conductor

L3. This connection remains unchanged throughout the

test. Connect the red measuring prod to the outer conduc-

tor L1.

- Once the meter recognises two outer conductors, the nor-

mal voltage will be displayed and the lock icon will remain lit.

- Now switch the red measuring prod to outer conductor L2

within 5 seconds. If the time for measuring point change

is exceeded, the DMM will interrupt the measurement and

the function must be restarted.

- The meter will evaluate the phase offset of the three sub-

sequently determined outer conductors at correct measur-

ing point change, and display the rotating direction via two

symbols in the display. The arrow direction of the symbols

shows the respective rotating direction:

Clockwise = right turning

Counter-clockwise = left-turning

- Foranothermeasurementpushthebutton“SELECT”once

briey.Todeactivatethefunction,keepthe“SELECT”but-

ton pushed for at least 2 seconds.

- Remove the measuring lines from the object to be meas-

ured after completion of the measurement and switch off

the DMM.

 Thefunctionbuttons“RANGE”,“MAXMIN”,“REL”,“Hz”and“HOLD”aredeactivatedinthismeasuring

function and cannot be selected.

When measuring 3 phase motor drives with variable frequency speed control interference can occur (PWM

interference).Inordertominimizethisinterferencealongermeasuringtime(≥30s)isrequired.

In this case, the nominal voltage indicated is only a reference value. The precision indicated is not valid for

speed-controlled motor drives.