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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Viewing 21 - 40 of 71 products
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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. 921-4514
Mfr. Part No.1004-735
BrandMegger
R 13,433.72
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 600V
RS stock no. 705-1951
Mfr. Part No.FLUKE 1550C/KIT
BrandFluke
R 71,990.00
Each
units
Insulation 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 600V
RS stock no. 917-6298
BrandRS PRO
R 24,498.27
Each
units
Insulation Tester 50V 1000V 9.5GΩ LCD - Dot Matrix - - - 0°C +40°C Mains - - -
RS stock no. 620-4084
Mfr. Part No.MIT330-EN
BrandMegger
R 13,803.36
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 600V
RS stock no. 620-4062
Mfr. Part No.MIT320-FR
BrandMegger
R 12,451.20
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 600V
RS stock no. 123-2237
BrandRS PRO
R 4,279.61
Each
units
Insulation Tester 250V 1000V 4GΩ LCD - 1mA - 0°C +40°C Battery - - -
RS stock no. 122-6796
Mfr. Part No.1004-741
BrandMegger
R 16,212.60
Each
units
Insulation Tester 50V 500V 200GΩ 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 600V
RS stock no. 867-5630
Mfr. Part No.M550T
R 23,893.80
Each
units
Insulation Tester 100V 5000V 100GΩ Analogue - 1mA - 0°C +40°C Battery CAT II, CAT III, CAT IV 300 V, 600 V, 1000 V CAT II 1000 V, CAT III 600 V, CAT IV 300V
RS stock no. 917-6294
BrandRS PRO
R 87,223.28
Each
units
Insulation Tester 50V 1000V 50GΩ LCD - Dot Matrix - - - 0°C +40°C Mains - - -
RS stock no. 123-3220
BrandRS PRO
R 6,003.88
Each
units
Insulation Tester 50V 1000V 20GΩ Auto Backlit Analog Bar Graph Display - - 1100 (times of insulation tests) 0°C +50°C Battery CAT IV 600V CAT IV 600V
RS stock no. 799-9014
Mfr. Part No.MX0407
BrandMetrix
R 7,059.00
Each
units
Insulation Tester 250V 1000V 4GΩ Analogue, Digital, LCD + Bargraph - 200mA - - - Battery CAT IV 600V CAT IV 600 V
RS stock no. 247-8562
Mfr. Part No.E3640
BrandMetrohm
R 37,345.44
Each
units
Flash Tester 0V 4200V - LCD - 5mA - -15°C +55°C Battery, Mains - - -
RS stock no. 914-2894
Mfr. Part No.CA6536
R 11,575.43
Each
units
Insulation & Continuity Tester 10V 100V 20GΩ Digital - 200mA 3000 Measurements, 6000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS stock no. 719-0917
Mfr. Part No.450A920
R 58,479.54
Each
units
Flash Tester 250V 1000V 999.9MΩ Analogue - 20mA - 0°C +40°C Mains - - -
RS stock no. 867-5621
Mfr. Part No.M550P
R 15,873.80
Each
units
Insulation Tester 50V 1000V 199GΩ Analogue, Digital - ≤5mA - -10°C +50°C Battery CAT II, CAT III, CAT IV 300 V, 600 V, 1000 V CAT II 1000 V, CAT III 600 V, CAT IV 300V
RS stock no. 917-6308
BrandRS PRO
R 46,988.88
Each
units
Insulation Tester 50V 1000V 9.5GΩ LCD - Dot Matrix - - - 0°C +40°C Mains - - -
RS stock no. 535-3185
Mfr. Part No.MIT220-EN
BrandMegger
R 7,735.20
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 300V
RS stock no. 914-2888
Mfr. Part No.P01140826
R 10,386.93
Each
units
Insulation & Continuity Tester 50V 1000V 200GΩ Backlit Digital LCD, Backlit LCD - 200mA 1500 Measurements, 3000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS stock no. 719-0914
Mfr. Part No.450A922
R 103,231.68
Each
units
Flash Tester 250V 1000V 999.9MΩ LCD - 0.1 → 40A - - - Mains - - -
RS stock no. 914-2875
Mfr. Part No.CA6522
R 8,277.12
Each
units
Insulation & Continuity Tester 250V 1000V 40GΩ Backlit Digital LCD, Backlit LCD - 200mA 1500 Measurements, 3000 Measurements -20°C +55°C Battery CAT IV 600V CAT IV 600V