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. 122-6799
Mfr. Part No.1006-755
BrandMegger
$1,608.00
Each
units
Insulation Tester 50V 1000V 100GΩ Digital 20 mA @ 10.0 Ω → 99.9 Ω, 205 mA @ 0.01 Ω → 9.99 Ω 2200 5-Second Tests -20°C +55°C Battery CAT IV 600V CAT IV 600 V Alkaline, NiMH
RS Stock No. 535-3191
Mfr. Part No.MIT230-EN
BrandMegger
$866.00
Each
units
Insulation & Continuity Tester 250V 1000V dc 999MΩ LCD 200mA 3000 5-Second Tests -10°C +55°C Battery CAT III 300V CAT III 300 V AA
RS Stock No. 705-1960
Mfr. Part No.FLUKE 1555
BrandFluke
$7,294.14
Each
units
Insulation Resistance Tester 250V 10000V 2TΩ LCD 1 nA → 2 mA 750 Tests -20°C +50°C Battery CAT III, CAT IV 1000 V, 600 V CAT III 1000 V, CAT IV 600 V Rechargeable Lead Acid (Yuasa NP2.8-12)
RS Stock No. 516-7710
Mfr. Part No.MIT320-EN
BrandMegger
$964.29
Each
units
Insulation & Continuity Tester 250V 1000V dc 999MΩ LCD 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600 V AA
RS Stock No. 921-4508
Mfr. Part No.1006-723
BrandMegger
$925.00
Each
units
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600 V Alkaline
RS Stock No. 302-9587
Mfr. Part No.MJ 15
BrandMegger
$3,613.00
Each
units
Insulation Resistance Tester 500V 5000V 20GΩ Analogue 1mA 2000 5-Second Tests -20°C +50°C Battery CAT I, CAT III 300 V, 600 V CAT I 600 V, CAT III 300 V AA
RS Stock No. 820-2976
Mfr. Part No.U1461A
$1,386.67
Each
units
Insulation Tester 50V 1000V 260GΩ OLED 1mA 160 h -40°C +55°C Battery CAT III, CAT IV 1000 V, 600 V CAT III 1000 V, CAT IV 600 V AA
RS Stock No. 921-4523
Mfr. Part No.1006-743
BrandMegger
$1,186.00
Each
units
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600 V Alkaline
RS Stock No. 122-6800
Mfr. Part No.1004-742
BrandMegger
$1,781.00
Each
units
Insulation Tester 50V 1000V 100GΩ Digital 20 mA @ 10.0 Ω → 99.9 Ω, 205 mA @ 0.01 Ω → 9.99 Ω 2200 5-Second Tests -20°C +55°C Battery CAT IV 600V CAT IV 600 V Alkaline, NiMH
RS Stock No. 705-1957
Mfr. Part No.FLUKE 1550C
BrandFluke
$6,739.46
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. 535-3185
Mfr. Part No.MIT220-EN
BrandMegger
$718.00
Each
units
Insulation & Continuity Tester 250V 500V dc 999MΩ LCD 200mA 3000 5-Second Tests -10°C +55°C Battery CAT III 300V CAT III 300 V AA
RS Stock No. 877-7118
Mfr. Part No.IM75
BrandFLIR
$875.00
Each
units
Insulation Tester 50V 1000V 20GΩ LCD - - 0°C +50°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V 6 x AAA
RS Stock No. 471-3306
Mfr. Part No.DT-500
BrandCatu
$707.03
Each
units
Insulation Resistance Tester - 500V dc 1MΩ Analogue 1mA - - - Battery - - - AA
RS Stock No. 820-2964
Mfr. Part No.U1452A
$1,085.87
Each
units
Insulation Tester 50V 1000V 260GΩ 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. 820-2973
Mfr. Part No.U1453A
$1,287.49
Each
units
Insulation Tester 50V 1000V 260GΩ LCD 1mA 160 h -40°C +55°C Battery CAT III, CAT IV 1000 V, 600 V CAT III 1000 V, CAT IV 600 V AA
RS Stock No. 620-4084
Mfr. Part No.MIT330-EN
BrandMegger
$1,163.00
Each
units
Insulation & Continuity Tester 250V dc 1000V dc 999MΩ Digital 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600 V AA
RS Stock No. 705-1951
Mfr. Part No.FLUKE 1550C/KIT
BrandFluke
$6,899.01
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. 914-2879
Mfr. Part No.P01140824
$1,004.16
Each
units
Insulation & Continuity Tester 50V 1000V 200GΩ Digital 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600 V AA
RS Stock No. 921-4520
Mfr. Part No.1006-749
BrandMegger
$1,328.00
Each
units
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600 V Alkaline
RS Stock No. 914-2888
Mfr. Part No.P01140826
$1,267.94
Each
units
Insulation & Continuity Tester 50V 1000V 200GΩ Digital 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600 V AA
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