Insulation Testers

Insulation testers are electrical measurement test tools used for preventative or predictive maintenance programs. Also known as megohmmeters they are designed to identify potential equipment failures before they occur. Insulation resistance testers are perfect for testing a wide range of high voltage equipment including switchgear, motors, generators and cables.

RS Components offer a range of high-quality electrical test tools from leading brands including Megger, Fluke, Chauvin Arnoux, Keysight Technologies, Metrohm, FLIR and of course RS PRO.

We also offer an in-house calibration service. See here for more details calibration services

Insulation tester types

Insulation testers are handheld devices but can be portable with a handle or bench mounted. Testers usually have an LCD or digital display, but some have the more traditional analogue needle such as the Megger MIT310A.

How do insulation resistance testers work?

Testing the integrity of insulation requires measuring its resistance to current flow across it. Testers use high voltage low current DC charge to measure the resistance. 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?

Ideally, all the 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 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.

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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Omschrijving Prijs 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-stocknr. 921-8727
Fabrikantnummer1006-337
FabrikantMegger
648,00 €
Each
Aantal stuks
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital UKAS 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 921-8718
Fabrikantnummer1006-337
FabrikantMegger
635,00 €
Each
Aantal stuks
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital RSCAL 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 921-4514
Fabrikantnummer1004-735
FabrikantMegger
565,00 €
Each
Aantal stuks
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-stocknr. 921-8691
Fabrikantnummer1006-336
FabrikantMegger
580,00 €
Each
Aantal stuks
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital RSCAL 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 921-8695
Fabrikantnummer1006-336
FabrikantMegger
593,00 €
Each
Aantal stuks
Insulation Tester 10V 1000V 200GΩ Analogue, Dual Digital UKAS 205mA 2200 (OFF) Test @ 55 s, 2200 (ON) Test @ 5 s -20°C +55°C Battery CAT IV 600V CAT IV 600V
RS-stocknr. 535-6493
FabrikantnummerMIT230
FabrikantMegger
513,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V dc 1000V dc 999MΩ LCD UKAS 200mA 3000 5-Second Tests -10°C +55°C Battery CAT III 300V CAT III 300V
RS-stocknr. 535-3191
FabrikantnummerMIT230-EN
FabrikantMegger
430,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999MΩ LCD - 200mA 3000 5-Second Tests -10°C +55°C Battery CAT III 300V CAT III 300V
RS-stocknr. 535-6487
FabrikantnummerMIT230
FabrikantMegger
500,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V dc 1000V dc 999MΩ LCD RSCAL 200mA 3000 5-Second Tests -10°C +55°C Battery CAT III 300V CAT III 300V
RS-stocknr. 921-4517
Fabrikantnummer1004-731
FabrikantMegger
510,00 €
Each
Aantal stuks
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-stocknr. 528-9359
FabrikantnummerFLUKE 1503
FabrikantFluke
522,00 €
Each
Aantal stuks
Insulation Tester 500V 1000V 2GΩ Graphic Display - Backlit UKAS 200mA - -20°C +55°C Battery CAT III, CAT IV 600V CAT III 600 V, CAT IV 600V
RS-stocknr. 528-9343
FabrikantnummerFLUKE 1503
FabrikantFluke
509,00 €
Each
Aantal stuks
Insulation Tester 500V 1000V 2GΩ Graphic Display - Backlit RSCAL 200mA - -20°C +55°C Battery CAT III, CAT IV 600V CAT III 600 V, CAT IV 600V
RS-stocknr. 518-5998
FabrikantnummerFLUKE 1503
FabrikantFluke
439,00 €
Each
Aantal stuks
Insulation Tester 500V 1000V 2GΩ Graphic Display - Backlit - 200mA - -20°C +55°C Battery CAT III, CAT IV 600V CAT III 600 V, CAT IV 600V
RS-stocknr. 905-7002
FabrikantnummerFLUKE-1587 FC
FabrikantFluke
904,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 2GΩ Backlit LCD RSCAL 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 905-7011
FabrikantnummerFLUKE-1587 FC
FabrikantFluke
917,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 2GΩ Backlit LCD UKAS 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 905-5920
FabrikantnummerFLUKE-1587 FC
FabrikantFluke
834,00 €
Each
Aantal stuks
Insulation Tester 50V 1000V 2GΩ Backlit LCD - 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 512-2802
FabrikantnummerFLUKE-1577
FabrikantFluke
769,00 €
Each
Aantal stuks
Insulation Tester 500V 1000V 2GΩ - UKAS 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 512-2795
FabrikantnummerFLUKE-1577
FabrikantFluke
738,00 €
Each
Aantal stuks
Insulation Tester 500V 1000V 2GΩ - RSCAL 1mA 1000 h -20°C +55°C Battery CAT III, CAT IV 600 V, 1000 V CAT III 1000 V, CAT IV 600V
RS-stocknr. 763-9267
Fabrikantnummer1001-935
FabrikantMegger
2.440,00 €
Each
Aantal stuks
Insulation Tester 250V 5000V 10TΩ LCD - 6mA 6 h -20°C +50°C Battery, Mains - - CAT IV 600V
RS-stocknr. 512-2492
FabrikantnummerFLUKE-1577
FabrikantFluke
692,00 €
Each
Aantal stuks
Insulation Tester 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 600V
RS-stocknr. 516-9182
FabrikantnummerMIT320
FabrikantMegger
695,00 €
Each
Aantal stuks
Insulation & Continuity Tester 250V 1000V dc 999mΩ LCD RSCAL 1mA 5000 5-Second Tests -10°C +60°C Battery CAT III 600V CAT III 600V