Insulation & Earth Testers

The UNI-T UT575B Double-Clamp Multifunctional Earth Tester is a high-end grounding instrument for professional field measurement of earth resistance, soil resistivity, earth voltage, and earth current. It supports multiple testing methods, including 2-wire, 3-wire, 4-wire, selective, and double-clamp methods, making it highly suitable for...

The UNI-T UT513B is a modern 5kV high-voltage insulation resistance tester for power systems, industrial plants, transformers, motors, generators, cables, telecom installations, oilfield equipment, and electromechanical maintenance. It supports 250V, 500V, 1000V, 2500V, and 5000V output ranges with a 10% voltage step adjustment. UNI-T...

The UNI-T UT513A is a 5kV insulation resistance tester for large transformers, generators, high-voltage motors, power cables, switchgear, and industrial electrical systems. It supports multiple insulation test voltages from 100V to 5000V and measures insulation resistance up to 1000 GΩ. The UT513A also includes...

The UNI-T UT511 Insulation Resistance Tester is designed to test the insulation resistance of electrical equipment, motors, cables, generators, panels, and industrial power systems. It supports test voltages of 100V, 250V, 500V, and 1000V, with insulation measurements up to 10GΩ. The UT510 series is...

The UNI-T UT512E is a professional 2.5kV digital insulation resistance tester for power cables, motors, transformers, generators, switchgear, and industrial electrical equipment. It offers test voltages of 250V, 500V, 1000V, and 2500V, with insulation resistance measurement up to 2.50TΩ on the 2500V range. Compared...

The UNI-T UT512D is a modern 2.5kV high-voltage insulation resistance tester for cables, motors, transformers, generators, lightning arresters, high-voltage switches, and power supply systems. It supports 250V, 500V, 1000V, and 2500V ranges, with fine-voltage adjustment, PI/DAR measurement, leakage-current display, automatic discharge, USB data transfer,...

The UNI-T UT533 Insulation Multimeter is a professional RMS meter combining digital multimeter functions with insulation resistance testing. It is suitable for electrical maintenance, cable checks, motors, transformers, industrial equipment, laboratory use, and troubleshooting jobs where users need insulation testing and standard electrical measurements...

The UNI-T UT516B is a digital high-voltage insulation resistance tester for power equipment, transformers, high-voltage cables, motors, generators, switchgear, and power supply circuits. It offers six test voltage ranges from 500V to 12000V, with 10% step voltage adjustment on most ranges, USB data transfer,...

The UNI-T UT501E Fast Insulation Tester is a modern digital insulation tester for fast diagnosis of cables, motors, appliances, electrical equipment, and maintenance circuits. It offers selectable insulation test voltages from 100V to 1000V, a measurement range up to 4 GΩ, low-resistance measurement, and...

Small leakage currents can trigger protective devices, waste energy or indicate deteriorating insulation long before equipment fails completely. The Fluke 368 FC True-RMS Leakage Current Clamp Meter detects and trends these low-level currents without taking equipment offline. It offers resolution down to 1 µA...

Complex installations containing connected electronics, surge-protection devices and modern RCDs require more protection and diagnostic capability during certification. The Fluke 1674 FC Multifunction Installation Tester is the top model in the 1670 Series, adding Insulation PreTest and SPD insulation ramp testing to the connected...

Modern installations increasingly include DC-sensitive protection, EV charging equipment and digital reporting requirements. The Fluke 1673 FC Multifunction Installation Tester expands the 1670 Series with wireless connectivity and advanced protection-system testing. It provides insulation test voltages from 50 V to 1000 V, continuity, loop...

Installation testing can become slow when every measurement requires separate setup and manual interpretation. The Fluke 1672 Multifunction Installation Tester introduces Fluke's newer 1670 Series workflow with a full-colour touchscreen, simplified user interface, Auto Test and automatic measurement validation. The 1672 supports AC/DC voltage...

Routine fixed-wiring verification requires several essential measurements, but not every installation technician needs advanced earth testing or wireless reporting. The Fluke 1662 Multifunction Installation Tester provides the core functions needed for basic domestic, commercial and industrial installation testing. It performs insulation-resistance and continuity testing,...

You can't properly evaluate a grounding system with a single test method in every installation. The Fluke 1623-2 GEO Earth Ground Tester supports four established approaches: 3- and 4-pole fall-of-potential, 4-pole soil resistivity, selective testing and stakeless testing. This flexibility allows technicians to test...

Leakage-current testing becomes difficult when multiple conductors or larger cables cannot fit through a standard leakage clamp. The Fluke 369 FC True-RMS Leakage Current Clamp Meter provides the same high-resolution diagnostic capability as the 368 FC but adds a larger 61 mm jaw for...

The UNI-T UT572 Advanced Earth Resistance Tester is designed for measuring grounding resistance and soil resistivity in electrical installations, power distribution systems, lightning protection systems, substations, telecom sites, and industrial plants. It supports 2-wire, 3-wire, and 4-wire testing under different field conditions and can...

The UNI-T UT526 Multifunction Electrical Installation Tester is designed for electrical safety inspection in power distribution systems, wiring systems, lightning protection systems, and building electrical installations. It combines insulation resistance testing, RCD testing, low-resistance continuity testing, and voltage measurement in a single compact instrument....

The UNI-T UT522 Digital Earth Resistance Tester is a higher-range model in the UT520 series, suitable for grounding resistance checks in power systems, electrical equipment, lightning protection networks, industrial facilities, and field service work. It supports 2-wire and 3-wire testing, LCD backlight, data hold,...

The UNI-T UT521 Digital Earth Resistance Tester is designed for grounding system checks in electrical installations, power distribution systems, lightning protection systems, industrial plants, buildings, and maintenance work. It supports both simple 2-wire and precise 3-wire earth resistance measurement, making it practical for field...