27

28

6

Display will show 

MAX

 symbol by pressing MAX/MIN key so as to display the maximum 

      active power, voltage and current during measurement. Please press MAX/MIN key to show 
    

MIN

 symbol on LCD and display the minimum active power during measurement. Please 

      press 

MAX/MIN

 key so that 

MAX

 and 

MIN

 symbols flicker together. It can 

      display current value and record the maximum value and the minimum value at the same 
      time during measurement. Please press the key for a long time to exit the maximum/
      minimum value mode.

Note:

Please do not measure AC voltage of more than 600

r.m.s

 and AC current of 1000A (r.m.s).

1

Press MENU to select gear of 

Power factor (cos(

)

+ Voltage (V)+ Current (A)

;

2

Jaw shall be fixed to measured conduits in corresponding phase locations. That is, user 

     shall measure a certain phase of three-phase circuit so that jaw is on corresponding conduit.
3

Please refer to Figure 4, 5 & 6 of UT240 manual for wiring of three-phase four-wire system, 

      three-phase three-wire system or single-phase two-wire system.

4

As shown in Figure 10-1, please press SELECT key to select 

      the 1st phase location of 

1 for load of three-phase four-wire 

      system. It also can display power factor (cos(

)), voltage (V) 

      and current (A) for phase location 

1.

7.2Power factor 

cos(

)

+ Voltage (V)+ Current (A)

Figure 

  As shown in Figure 10-2, please press SELECT key to select 

     the 2nd phase location when adopting three-phase four-wire 
     system for load so as to display active power, voltage and 
     current of phase location of 

2.

Figure 

Figure 

 Please press SELECT key to select the 3rd phase location 

     of 

3 for load of three-phase four-wire system. It also can 

     display power factor (cos(

)), voltage (V) and current (A) for 

     phase location of 

3.

Measurement operation of the 1st and 2nd phase locations is the same as that of three-phase 
four-wire system after tripping the 3rd phase location of measurement.

5

There is no measurement function of the maximum/minimum value for this function gear.

Note: 

Please do not measure AC voltage of more than 600V

r.m.s

and AC current of 1000A

r.m.s

.

UT241/242/243 OPERATING MANUAL 

UT241/242/243 OPERATING MANUAL