Home
Cart
Compare

Insulation Testers

Insulation Testers

Shop ZOYI insulation testers and insulation resistance testers for electrical safety testing, maintenance, fault finding and inspection work.

Test insulation resistance on cables, motors, wiring, appliances and electrical installations using professional instruments with multiple test voltages, high MΩ measurement ranges and advanced functions such as PI/DAR. UK stock with VAT-inclusive pricing and fast delivery.

ZOYI ZT-1000R digital multimeter close-up showing large backlit LCD
Quick view
ZOYI

ZT-1000R Digital Insulation Resistance Tester...

£88.88
Availability: 16 In Stock

The ZOYI ZT-1000R is a professional insulation tester and True RMS digital multimeter designed for electricians, maintenance engineers and electrical safety inspections. It supports insulation resistance testing up to 1000V and includes multimeter functions such as AC/DC voltage, current, resistance, continuity and diode testing.

With a clear backlit display, reliable insulation measurement ranges and accurate True RMS performance, it is suitable for testing motors, cables, wiring installations, appliances and electrical equipment in domestic, commercial and industrial environments. UK stock with VAT invoice included.

Professional Insulation Resistance Testers

Insulation resistance testing is used to assess the condition of electrical insulation in cables, motors, wiring, appliances and electrical equipment. Unlike a standard multimeter resistance measurement, an insulation tester applies a higher test voltage and measures insulation resistance in megaohms (MΩ).

What Is an Insulation Tester Used For?

  • Electrical installation testing and maintenance
  • Checking cable and wiring insulation
  • Testing motor windings and electrical equipment
  • Investigating insulation deterioration and leakage
  • Fault finding after moisture, ageing or electrical damage
  • Preventive maintenance and periodic electrical inspection

Insulation Tester or Digital Multimeter?

A digital multimeter is ideal for everyday measurements such as voltage, current, resistance and continuity. An insulation resistance tester is designed specifically for evaluating electrical insulation using higher test voltages.

Read our Insulation Tester vs Multimeter guide for a more detailed explanation of the differences and when each instrument should be used.

Insulation Resistance Test Features

Depending on the model, ZOYI insulation testers may provide selectable insulation test voltages, high-resistance measurement ranges and advanced diagnostic functions such as PI (Polarisation Index) and DAR (Dielectric Absorption Ratio).

ZOYI ZT-1000R Insulation Tester & True RMS Multimeter

The ZOYI ZT-1000R insulation tester combines insulation resistance testing with True RMS digital multimeter functions, making it suitable for electricians, maintenance engineers and electrical inspection work where both conventional electrical measurements and insulation testing are required.

How to Perform an Insulation Resistance Test

Need practical guidance? Read our step-by-step insulation resistance testing guide for an introduction to the testing process and important measurement considerations.

Related Electrical Test Equipment

For everyday electrical measurements such as voltage, current, resistance and continuity, browse our ZOYI digital multimeters .

For a broader selection of professional electrical and electronics instruments, browse all ZOYI test equipment .

Why Buy ZOYI Insulation Testers from ZOYI UK?

  • Genuine ZOYI test instruments
  • UK-held stock
  • VAT-inclusive pricing
  • Fast UK delivery
  • Technical documentation and support

ZOYI Insulation Tester Manuals & Firmware

Already own a ZOYI instrument? Visit ZOYI Manuals & Firmware Downloads for available documentation, firmware and software.

Safety note: Insulation resistance testers can generate high test voltages. Testing should only be carried out on suitable de-energised circuits and equipment using the correct procedures and appropriate electrical safety precautions.