Uni-T UT233 Расширенная инструкция онлайн [38/50] 528828

Model UT233: OPERATING MANUAL

Negative phase sequence is shown as below figure.

When V1 input terminal, V2 input terminal and V3

input terminal base on the below table connecting

A phase, B phase and C phase, all three phases

voltage are over 100V, LCD displays negative phase

sequence result, as figure 35.

A, B, C phases

Input Terminal

Checking Result Negative phase sequence

V2 input terminal

corresponding voltage

V1 input terminal

corresponding voltage.

V3 input terminal

corresponding voltage

Figure 35

When any one phase’s voltage has no singal or less

than 100V at 3 phases 4 wires overload mode, the

LCD display missing phase result.

USB interface feature is not valid at this measurement

mode.

Note

Postive and negative phase sequence checking

voltage range is 100V ~500V.

When testing has been completed, disconnect the

connection between the testing leads and the circuit

under test and remove testing leads from the input

terminals.

Negative phase sequence