31
32
Please press SELECT key to select the 3rd phase location of
3 shown in Figure 12-3. It also can display frequency, voltage
and current of phase location of
3.
Figure
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:
1
It is not allowed to measure AC voltage of more than 600V
r.m.s
and AC current of
1000A
r.m.s
.
2
Not frequency of current signals but that of voltage signals shall be measured.
7.6Electric energy (kWh)+Active power (kW)+Time (h:m:s)
1
Press MENU key to select gear of
electric energy (kWh)+active power(kW)+time (h:m:s)
;
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.
As shown in Figure 13, please press SELECT key to select
phase locations of
1
2
3 to display current power of
measured load for corresponding phase locations, current
statistic period and current accumulated electric energy on
LCD.
Figure
Accumulated electric energy increases gradually with time. User can press HOLD key to lock
measurement value and measurement time display when reading electric energy for a certain
period. However, instrument will continue to accumulate measurement time. Please press HOLD
key once again after reading data to continue to measure accumulated electric energy.
Measurement time display will turn to current measurement time value and electric energy
function will not stop until function conversion to positions of other gears. The maximum testing
quantity of electric energy is
9999kWh
. Display will show OL symbol a fter e xceeding the
value. The maximum statistic period of electric energy also cannot exceed 99 hours.
4
There is no measurement function of the maximum/minimum value for this function gear.
5
Press CLEAR key to reset time and accumulated electric energy to begin counting &
measurement again.
UT241/242/243 OPERATING MANUAL
UT241/242/243 OPERATING MANUAL
