Specifications:

Range

Accuracy

Model number

UT523A

Earth resistance

0.00~19.99

±(2%+5)

20.0~199.9

±(2%+5)

200~1999

±(2%+5)

2.00k~19.99k

±(2%+5)

20.0k~210.0k

±(2%+5)

Soil resistivity

0.00m~99.99m

Depends on R accuracy:

(ρ=2πaR a:1 m~100m;

π=3.141)

100.0m~999.9m

1000m~9999m

10.00km~99.99km

100.0km~999.9km

1000km~9000km

Earth voltage

AC 0.00~750V

±(2%+5)

Measuring frequency

128Hz/111Hz/105Hz/94Hz(AFC)

Yes

Features:

Measuring method

Earth resistance: Rated current role changing method,

measuring current 20mA Max;

Soil resistivity: 4-pole method(Wenner method);

Voltage to earth:Mean values rectifier(P(S)–ES interfaces)

Yes

Short-circuit test current

AC 30mA max

Yes

Open-circuit test voltage

AC 40V max

Yes

Auto range

Yes

Range between poles

Can set 1m~200m

Yes

Measuring voltage waveform

Sine wave

Yes

Line voltage

AC 750V below measurement

Yes

Low voltage measurement

≤7.5V

Yes

Data hold

Yes

Alarm

Yes

RS232 interface

Yes

Withstand voltage

AC 3700V/rms(between circuit and shell)

Yes

LCD backlight

Yes

Data storage

300 groups

Yes

Auxiliary earth measurement

Auxiliary earth resistance measurement,

0.00K~30k(100R+rC<50k,100R+rP<50k)

Yes

Over-load protect

Measure earth resistance:C(H)-EP(S)-ES interface AC 280V/3seconds

Yes

Interference test

Auto identification interference signal,

will display “NOISE” when interference voltage is higher than 5V

Yes

Test times

Over 5000 times(short-circuit test, test one time, after 30 seconds and test again.

Yes

Insulation resistance

Over 20M(500V between circuit and shell)

Yes

Device Characteristics

Power

DC 9V ( R14S 1.5Vx 6 ,stand by 300hours)(Batteries are not included)

LCD size

128mmx75mm

Color

Red + Grey

Weight

1443g

Size

215mmx190mmx95mm