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UNI-T UT521 Earth Ground Resistance Tester

Price: 146.10 €
Products ID:175637
Manufactured by: Uni-T
Availablity: Ready to Order
Delivery Time5-10 business days
EAN: 6935750552100

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UNI-T UT521 Earth Ground Resistance Tester
UNI-T UT521 Earth Ground Resistance Tester
UNI-T UT521 Earth Ground Resistance Tester
UNI-T UT521 Earth Ground Resistance Tester


The UNI-T UT521 is a digital grounding tester designed for measuring ground resistance and AC ground voltage in power systems and lightning protection installations.

Key Features

  • Supports simple 2-wire and precise 3-wire measurement methods
  • Backlit LCD screen with Data Hold function
  • Internal data memory for up to 20 sets of measurements
  • Weak contact and out-of-range overload (OL) indicators
  • Double insulation protection and automatic shutdown after 10 minutes of inactivity

ManufacturerUNI-T
ModelUT521
Ground resistance measurement0~20 Ω / 0~200 Ω / 0~2000 Ω / 0~40 Ω / 0~400 Ω / 0~4000 Ω
AC ground voltage measurement0~200 V / 0~400 V
Frequency50 Hz / 60 Hz
Display count2000
Data memory20 sets
Display size70.6 × 34 mm
Power supply6 × 1.5 V battery (LR6)
Dimensions160 × 100 × 70.5 mm
Weight560 g
ColorRed, gray
What measurement methods does the UNI-T UT521 support?

The tester supports both simple 2-wire measurement and precise 3-wire measurement.

What is included in the package?

The package includes the grounding tester, batteries, straight test leads with crocodile clamps, standard test leads with crocodile clamps, grounding skewers, carrying bag, and instruction manual.

How is the device powered?

The tester is powered by six 1.5 V LR6 (AA) batteries.

15+ yearsLocal Latvian online store
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Easy returnsWarranty and simple returns

146.10 €