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Danger! Do not measure voltage line over 600V, otherwise it can 

pose a risk of electric shock, which may cause personal injury or 

equipment damage. 

Danger! Do not measure any line over 1000A, otherwise it may 

cause equipment damage. 

 

 

Please perform wiring strictly according to the user manual. Do 

not connect I1, I2 and I3 inversely. 

Please remove the test leads from measured line before 

disconnecting the test leads with the voltammeter. 

 

 

The phase relations of the voltammeter is: U1U2, U2U3, U3U1, I1I2, 

I2I3, I3I1, U1I1, U2I2 and U3I3, the previous signals exceed the next 

ones for all the phases. 

The U1, U2 and U3 terminals and the right arrows at the 

corresponding current clamps are the same-polarity ends. 

For phase testing, the direction of current flowing into the clamp 

shall be consistent with the direction of arrow at the clamp. 

The voltammeter measure 3-phase AC voltage and current, phase between 
voltages, phase between currents, phase between voltage and current, frequency, 
active power, reactive power, apparent power, power factor, 3-phase current 
vector sum, and identify phase sequence, inductive and capacitive circuits, etc. 

Wiring of tests: 

Single-phase testing: 

Connect the measured voltage lines L and N with U1 

YELLOW and COM BLACK terminals correspondingly, then the current clamp I1 
clamps the measured line L. “U2 GREEN, COM BLACK and I2” or “U3 RED, COM 
BLACK and I3” can also be connected. 

3-phase 4-wire testing: 

Connect the measured voltage lines UA YELLOW, UB 

GREEN, UC RED and N BLACK with U1 YELLOW, U2 GREEN,  U3 RED and 
COM BLACK terminals correspondingly, then the current clamps I1, I2 and I3 
clamp the measured lines IA, IB and IC correspondingly.

 

3-phase 3-wire testing: 

Connect the measured voltage lines UA YELLOW, UC 

RED and UB GREEN with U1 YELLOW, U3 RED and COM BLACK terminals, 
then the current clamps I1 and I3 clamp the measured lines IA and IC 
correspondingly. See “Reference wiring diagrams”. 
Inductive  and  capacitive loads, phase sequence and polarity can be identified 
according to the phase relations. If the phase of U1I1 is between 0.0 and 90.0, 
then the measured load is inductive; if between 270.0 and 360.0, then capacitive. 
If the phase is approximate to 120.0, then the phase sequence is positive and the 
polarity is same; if approximate to 120.0 and 300.0, then positive and opposite (the 
current clamp may be in reverse direction or the measured line may be connected 
inversely); the phase sequence is negative for other phase values (phase loss is 
not considered). 

Summary of Contents for UT268B

Page 1: ...P N 110401111944X UT268B...

Page 2: ...erating Conditions 4 2 Rated Operating Conditions 4 3 General Specifications 4 4 Performance Specifications 6 VI External Structure 7 VII Operating Instructions 8 1 Power On Off 8 2 Data Hold Cancella...

Page 3: ...n is correct when performing phase test Remove the test lead from measured conductor before disconnecting the test lead with the voltammeter Do not make contact with the terminal by hand to avoid elec...

Page 4: ...in electric power petrochemical industry metallurgy railway industrial and mining enterprises scientific and research institute metrology service electric energy charging system relay protection syste...

Page 5: ...veform of measured signal Sinusoidal wave 0 05 5 Frequency of measured signal 45 65HZ 6 Current amplitude when measuring phase frequency phase sequence power and power factor 20mA 1000A 7 Voltage ampl...

Page 6: ...er 0 1W Reactive power 0 1VAR Apparent power 0 1VA Power factor 0 001 Current vector sum 1mA Phase sequence If the phase sequence of U1 U2 and U3 or I1 I2 and I3 is positive then the cursor flashes fr...

Page 7: ...0V 9 99V 0 01V 1 5 rdg 3dgt AC 10 0V 99 9V 0 1V 1 5 rdg 3dgt AC 100V 600V 1V 1 5 rdg 3dgt Current AC 0 0mA 9 9mA 0 1mA 1 5 rdg 3dgt AC 10 0mA 99 9mA 0 1mA 1 5 rdg 3dgt AC 100mA 999mA 1mA 1 5 rdg 3dgt...

Page 8: ...UT268B...

Page 9: ...sable data hold When the voltammeter holds data it performs automatic numbering stores the data held currently and displays the numbering of groups i e Save 002 500 groups of data can be stored at mos...

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Page 11: ...sts Single phase testing Connect the measured voltage lines L and N with U1 YELLOW and COM BLACK terminals correspondingly then the current clamp I1 clamps the measured line L U2 GREEN COM BLACK and I...

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Page 15: ...ely Charger USB cable 1 set User manual 1 pcs The content of this user manual cannot be used as a reason for using the product for special purposes The company is not responsible for other losses caus...

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