25

26

1

Press MENU key to select 

inactive power (kWar)+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 9-1, please press SELECT key to select the 

     1st phase location of 

1 for three-phase four-wire system of 

      load. It can display apparent power, voltage and current of phase 
      location 

1.

7.2Inactive power(kWar)+Voltage(V)+Current(A)

Figure 

   As shown in Figure 9-2, please press 

 key to measure 

      total three-phase power. Current measured power of the 1st 
      phase location also shall be calculated and saved.

Figure 

  As shown in Figure 9-3, please press SELECT key to select 

     the 2nd phase location. It also can display active power, voltage 
     and current of phase location of 

2.

Figure 

  As shown in Figure 9-4, please press 

 key to measure 

     total three-phase power. Current measured power of the 2nd 
     phase location also shall be calculated and saved.

Figure 

 As shown in Figure 9-5, please press SELECT key to select 

    the 3rd phase location. It  also  can  display  active  power,v oltage  
    and current of phase location of 

3.

Figure 

 As shown in Figure 9-6, please press 

 key to measure 

    total three-phase power. Current measured power of the 3rd 
    phase location also shall be calculated and saved.

Figure 

 As shown in Figure 9-7, total three-phase active power 

    can be displayed by pressing SELECT key finally.

Figure 

 Measurement operation of the 1st and 2nd phase locations 

    is the same as that of three-phase four-wire system. As 
    shown in Figure 9-8, total three-phase inactive power can be 
    displayed by pressing SELECT key after tripping the 3rd 
    phase location of measurement.

Figure 

5

The maximum measuring range is 600kWar for single-phase inactive power to display 

OL

 symbol if exceeding the range. The maximum range is 1,800KWar for total three-

      phase active power. It also will display 

OL

 symbol if exceeding the range.

UT241/242/243 OPERATING MANUAL 

UT241/242/243 OPERATING MANUAL