Ac Voltage Measurements - Extech Instruments 380943 User Manual

Leakage Current on Unbalanced Loads
Ground Conductor Leakage
Three Phase 3-Wire Leakage

AC Voltage Measurements

WARNING: To avoid electric shock or damage to the meter, do not make any voltage
measurements that exceed the maximum specified limits.
1. Set the Function switch to the Voltage position.
2. Set the Frequency Slide Switch to the appropriate position (refer to the section "Using
the Frequency Slide Switch" earlier in this manual).
3. Insert the test leads to the meter as follows: Red lead to the red 'V' input terminal;
Black lead to the black COM input terminal.
4. Connect the test leads to the circuit or device under test (see diagram example below).
5. Read the ACV value on the meter's display (LCD digits and bargraph).
Single Phase 2-Wire Leakage
Three Phase 4-Wire Leakage
5 Model 380943 Ver. 2.1 11/2002