Basic Functions

Range / Features

Remarks / Accuracy

UT591

UT592

UT593

UT595

Open circuit output voltage

250V, 500V, 1000V

±10%

±10%

±10%

±10%

Short-circuit current

< 2mA

√

√

√

√

Insulation resistance 

250V

0.01MΩ/0.1MΩ/1MΩ: 0.05MΩ~1000MΩ:5%+5

500V

1000V

Earthing measurement

Measuring range

0.00Ω~~199Ω:Accuracy±2%+5

0.00~~2Ω Test current>200mA

Line Impedance 

Using Voltage

195V~~440V,Frequency: 45Hz~~65Hz, Test current: 20A

Measuring range

0.01Ω~~2000Ω: 5%+5, 
PFC  Range: 0KA~~26KA.

Loop impedance 

Using voltage

195V~~253V,Frequency: 45Hz~~65Hz, 
Test current: 20A

Measuring range

0.01Ω~~2000Ω: 5%+5, 
PFC  Range:0kA~~26kA.

Loop Impedance without tripping

Using Voltage

195V~~253V,Frequency: 45Hz~~65Hz,Test current:20A

Measuring range

1.00Ω~~2000Ω: 5%+5,
PFC  Range:0kA~~26kA.

Test Current

15mA

RCD  measurement

Using voltage

195V~~253V,Frequency: 45Hz~~65Hz

Test current

10mA,30mA,100mA,300mA,500mA

Accuracy of test current

±10%

Tripping time

0ms--2000ms,   1/2 n

0ms--300ms,   I n General

0ms--500ms,   I n Selective

0ms--40ms,   5I n

Tripping time accuracy

±5%+5

RCD measurement RAMP slope

Test current range

10mA,30mA,100mA,300mA,500mA

Accuracy of test current

±10%

Voltage measurement

Measuring range and Frequency response 

Resolution:1V, 0V--440V/45Hz-60Hz

Accuracy of test voltage

PictOld