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 Calibrated Test Current Battery Life Minimum Operating Temperature Maximum Operating Temperature Power Source Safety Category Level Safety Category Voltage Safety Category
RS stock no. 518-6008
Mfr. Part No.FLUKE 1507
BrandFluke
R 11,166.00
Each
units
Insulation & Continuity Tester 50V 1000V 10GΩ - - 200mA - -20°C +55°C Battery CAT III, CAT IV 600V CAT III 600 V, CAT IV 600 V
RS stock no. 763-9264
Mfr. Part No.1001-943
BrandMegger
R 70,671.31
Each
units
Insulation Resistance Tester 500V 10000V 20TΩ LCD - 6mA 4.5 h -20°C +50°C Battery, Mains - - CAT IV
RS stock no. 516-7704
Mfr. Part No.MIT310A-EN
BrandMegger
R 7,747.35
Each
units
Insulation & Continuity Tester 250V 1000V dc 999MΩ Analogue - 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600 V
RS stock no. 535-3191
Mfr. Part No.MIT230-EN
BrandMegger
R 7,398.15
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
RS stock no. 914-5420
Mfr. Part No.2491945
BrandFluke
R 10,514.25
Each
units
Insulation Multimeter 50V 1000V 2GΩ Digital - 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V
RS stock no. 763-9260
Mfr. Part No.1001-939
BrandMegger
R 61,675.09
Each
units
Insulation Resistance Tester 250V 5000V 10TΩ LCD - 6mA 6 h -20°C +50°C Battery, Mains - - CAT IV
RS stock no. 518-5998
Mfr. Part No.FLUKE 1503
BrandFluke
R 9,302.03
Each
units
Insulation Resistance Tester 500V 1000V 2GΩ Graphic Display - Backlit - 200mA - -20°C +55°C Battery CAT III, CAT IV 600V CAT III 600 V, CAT IV 600 V
RS stock no. 763-9267
Mfr. Part No.1001-935
BrandMegger
R 45,434.66
Each
units
Insulation Resistance Tester 250V 5000V 10TΩ LCD - 6mA 6 h -20°C +50°C Battery, Mains - - CAT IV
RS stock no. 705-1960
Mfr. Part No.FLUKE 1555
BrandFluke
R 80,009.74
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
RS stock no. 516-7697
Mfr. Part No.MIT310-EN
BrandMegger
R 8,517.35
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
RS stock no. 302-9587
Mfr. Part No.MJ 15
BrandMegger
R 31,484.10
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
RS stock no. 705-1957
Mfr. Part No.FLUKE 1550C
BrandFluke
R 67,923.98
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
RS stock no. 516-7681
Mfr. Part No.MIT300-EN
BrandMegger
R 6,664.28
Each
units
Insulation & Continuity Tester 250V 500V dc 999MΩ LCD - 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600 V
RS stock no. 122-6798
Mfr. Part No.1004-745
BrandMegger
R 16,769.48
Each
units
Insulation Tester 50V 2500V 200GΩ - - - 3000 5-Second Tests - - Battery CAT IV - -
RS stock no. 512-2492
Mfr. Part No.FLUKE-1577
BrandFluke
R 14,673.18
Each
units
Insulation Multimeter 500V 1000V 2GΩ - - 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600 V
RS stock no. 921-4526
Mfr. Part No.1004-739
BrandMegger
R 10,311.00
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
RS stock no. 719-3115
Mfr. Part No.P01.1397.01
R 43,356.10
Each
units
Insulation Resistance Tester 500V 5000V 10TΩ LCD - 0.000 nA → 3000 μA 30 days - - Battery CAT I, CAT III 1000 V, 2500 V CAT I 2500 V, CAT III 1000 V
RS stock no. 921-4539
Mfr. Part No.1004-740
BrandMegger
R 11,953.00
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
RS stock no. 516-7710
Mfr. Part No.MIT320-EN
BrandMegger
R 9,091.89
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
RS stock no. 921-4517
Mfr. Part No.1004-731
BrandMegger
R 8,151.84
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