Insulation Testers

Insulation testers are the ideal tool for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur. They are perfect for testing a wide range of high voltage equipment including switchgear, motors, generators and cables.

Ideally all electrical current sent along a conductive wire should reach its intended destination. However you do find that some of it is lost along the way due to various reasons. Wires are insulated with a resistant sheathing to contain the conductivity of the typically copper or aluminium core, but even with this insulation in place, some of the current still manages to escape. The electricity that leaks out can be detrimental to electrical circuits and machinery. Testing can help you determine whether the insulation is performing at an effective and safe level. Excessive heat or cold, moisture, vibration, dirt, oil and corrosive vapours can all contribute to deterioration therefore routine testing can identify problems before they result in injury or equipment failure.

Testing the integrity of insulation requires measuring its resistance to current flow across it. A high level of resistance means that very little current is escaping through the insulation. Conversely, a low level of resistance indicates a significant amount of current may be leaking through and along the insulation.

What is the purpose of insulation testing?

A quality control measure at the time a piece of electrical equipment is produced.
An installation requirement to help ensure specifications are met and to verify proper hook-up
A periodic preventive maintenance task
A troubleshooting tool

Insulation testers provide noise free, reliable results. They are safe and easy to use and the ideal solution for troubleshooting, commissioning and preventative maintenance applications.

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Description Price Tester Type Minimum Test Voltage Maximum Test Voltage Maximum Insulation Resistance Measurement Display Type Test Current Battery Life Minimum Operating Temperature Maximum Operating Temperature Power Source Safety Category Level Safety Category Voltage Safety Category Battery Type
RS Stock No. 867-5630
Mfr. Part No.M550T
$2,163.46
Each
units
Insulation Tester 100V 5000V 100GΩ Analogue 1mA - 0°C +40°C Battery CAT II, CAT III, CAT IV 1000 V, 300 V, 600 V CAT II 1000 V, CAT III 600 V, CAT IV 300 V D
RS Stock No. 914-2881
Mfr. Part No.P01140832
$1,377.84
Each
units
Insulation & Continuity Tester 50V 100V 20GΩ Digital 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600 V AA
RS Stock No. 820-2960
Mfr. Part No.U1451A
$599.79
Each
units
Insulation Tester 250V 1000V 66GΩ LCD 1mA 270 h -20°C +55°C Battery CAT III, CAT IV 1000 V, 600 V CAT III 1000 V, CAT IV 600 V AA
RS Stock No. 867-5621
Mfr. Part No.M550P
$1,453.85
Each
units
Insulation Tester 50V 1000V 199GΩ Analogue, Digital ≤5mA - -10°C +50°C Battery CAT II, CAT III, CAT IV 1000 V, 300 V, 600 V CAT II 1000 V, CAT III 600 V, CAT IV 300 V AA
RS Stock No. 334-7201
Mfr. Part No.M540C
$1,112.88
Each
units
Insulation Resistance Tester 50V 1000V 400MΩ Analogue 200mA 3000 Tests (Carbon Zinc) 0°C +40°C Battery CAT II 1000V CAT II 1000 V D
RS Stock No. 379-472
Mfr. Part No.IN2102
BrandMartindale
$704.55
Each
units
Insulation & Continuity Tester 250V 1000V 5GΩ LCD 200mA - 0°C +40°C Battery CAT III 600V CAT III 600 V AA
RS Stock No. 379-476
Mfr. Part No.IN2101
BrandMartindale
$435.73
Each
units
Insulation & Continuity Tester - 500V 1GΩ LCD 200mA - 0°C +40°C Battery CAT III 600V CAT III 600 V AA
RS Stock No. 799-9014
Mfr. Part No.MX0407
BrandMetrix
$648.69
Each
units
Insulation Tester 250V 1000V 4GΩ Analogue, Digital, LCD + Bargraph 200mA - - - Battery CAT IV 600V CAT IV 600 V AA
RS Stock No. 820-2970
Mfr. Part No.U1452AT
$930.13
Each
units
Insulation Tester 50V 100V 66GΩ OLED 1mA 270 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V AA
RS Stock No. 914-2894
Mfr. Part No.CA6536
$1,390.34
Each
units
Insulation & Continuity Tester 10V 100V 20GΩ Digital 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600 V AA
RS Stock No. 765-9589
Mfr. Part No.1001-942
BrandMegger
$7,100.00
Each
units
Insulation Tester 250V 5000V 10TΩ LCD 5mA 6 h -20°C +50°C Battery, Mains - - CAT IV Lithium-Ion
RS Stock No. 187-9921
Mfr. Part No.46119602
BrandSocomec
$1,000.38
Each
units
- - 2kV - - - - -10°C +55°C Mains - - - -
RS Stock No. 175-7819
Mfr. Part No.FLUKE-1555 FC Kit w/IR3000
BrandFluke
$8,444.00
Each
units
Insulation Resistance Tester 250V 10000V 2TΩ LCD 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V Rechargeable Lead Acid (Yuasa NP2.8-12)
RS Stock No. 187-9915
Mfr. Part No.47339611
BrandSocomec
$3,051.29
Each
units
- - - - LCD - - -10°C +55°C - - - - -
RS Stock No. 175-7822
Mfr. Part No.FLUKE-1550C FC Kit w/IR3000
BrandFluke
$7,670.00
Each
units
Insulation Resistance Tester 250V 5000V 1TΩ LCD 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V Rechargeable Lead Acid (Yuasa NP2.8-12)
RS Stock No. 914-2875
Mfr. Part No.CA6522
$923.18
Each
units
Insulation & Continuity Tester 250V 1000V 40GΩ Digital 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600 V AA
RS Stock No. 175-7818
Mfr. Part No.FLUKE-1555 FC w/IR3000FC
BrandFluke
$8,139.00
Each
units
Insulation Resistance Tester 250V 10000V 2TΩ LCD 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V Rechargeable Lead Acid (Yuasa NP2.8-12)
RS Stock No. 507-5699
Mfr. Part No.P01138901
$2,057.08
Each
units
Insulation & Continuity Tester 50V 1000V 4TΩ LCD 200mA - -10°C +55°C Battery CAT III 600V CAT III 600 V C
RS Stock No. 175-7821
Mfr. Part No.FLUKE-1550C FC w/IR3000
BrandFluke
$7,181.00
Each
units
Insulation Resistance Tester 250V 5000V 1TΩ LCD 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V Rechargeable Lead Acid (Yuasa NP2.8-12)
RS Stock No. 765-9583
Mfr. Part No.1001-946
BrandMegger
$8,681.00
Each
units
Insulation Tester 500V 10000V 20TΩ LCD 5mA 4.5 h -20°C +50°C Battery, Mains - - CAT IV Lithium-Ion
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