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High Voltage Insulation Testers & Megohmmeters

Insulation breakdown isn't just inconvenient - it's highly dangerous. These high voltage insulation testers verify the insulation of an electrical installation to see if action must be taken to prevent dangerous electrical incidents.

Find out more about High Voltage Insulation Testers & Megohmmeters below.

Offer
Megger MIT2500 Industrial/Utility High Voltage Insulation Tester-2.5kV
In Stock : Get It Next Working Day*
Megger MIT2500 Industrial/Utility High Voltage Insulation Tester-2.5kV
£840.00
£1,008.00 inc. vat
  • Handheld, portable insulation tester
  • Variable test voltage from 50 to 2500V
  • Memory storage with Bluetooth wireless connection
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Offer
Megger MIT Insulation Resistance Tester, Essential Range (MIT515/2 & MIT1015)
Megger MIT Insulation Resistance Tester, Essential Range (MIT515/2 & MIT1015)
£2,544.00
£3,052.80 inc. vat
  • 5 kV or 10 kV models
  • Measures up to 20 TΩ
  • Up to 3 mA noise rejection
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Offer
Megger MIT Insulation Resistance Tester, Advanced Range (MIT525/2, MIT1025/2 & MIT1525/2)
In Stock : Get It Next Working Day*
Megger MIT Insulation Resistance Tester, Advanced Range (MIT525/2, MIT1025/2 & MIT1525/2)
£3,099.00
£3,718.80 inc. vat
  • RE>Act mode
  • PI predictor function (PIp)
  • 5 kV, 10 kV, or 15 kV
  • Measures up to 30 TΩ
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Offer
Megger S1-568 UK Diagnostic Insulation Tester (5kV) – Choice of Model
In Stock : Get It Next Working Day*
Megger S1-568 UK Diagnostic Insulation Tester (5kV) – Choice of Model
£3,589.00
£4,306.80 inc. vat
  • Optional transport case
  • High-performance ohmmeter ideal
  • Suitable for service and power utilities companies & substation technicians
  • Suitable for original equipment manufacturers/ repairers
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Offer
Megger S1-1068-UK Diagnostic Insulation Tester 10kV, 6mA test current, 8mA immunity
In Stock : Get It Next Working Day*
Megger S1-1068-UK Diagnostic Insulation Tester 10kV, 6mA test current, 8mA immunity
£4,099.00
£4,918.80 inc. vat
  • Current: 0.01na to 6mA
  • High current: 6mA short circuit current
  • Capacitance: 10nF to 25µF
  • Voltage: 30V to 660V AC/DC (45Hz- 65Hz)
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Offer
Megger S1 Insulation Resistance Tester, Expert Range (S1-568/2, S1-1068/2 & S1-1568/2)
In Stock : Get It Next Working Day*
Megger S1 Insulation Resistance Tester, Expert Range (S1-568/2, S1-1068/2 & S1-1568/2)
£4,125.00
£4,950.00 inc. vat
  • 5 kV, 10 kV, or 15 kV
  • Up to 8 mA noise rejection
  • Measures up to 35 TΩ
  • Safety rated up to CAT IV 1000 V to 4000 m
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Offer
Megger HVTEST-25 Portable High Voltage Generator
Made To Order
Megger HVTEST-25 Portable High Voltage Generator
£7,065.00
£8,478.00 inc. vat
  • 0 to 25kV adjustable output voltage
  • Portable design for easy transportation
  • Integrated discharge facility
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Offer
Megger MTO210 Transformer Ohmmeter, 10A 120-240V
Megger MTO210 Transformer Ohmmeter, 10A 120-240V
£11,975.00
£14,370.00 inc. vat
  • Resistance measurement range: 1mΩ to 2000Ω
  • Accuracy: 0.25%
  • Maximum test current: 10A DC
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Offer
Megger MTO300/330A Automated Six-Winding Transformer Ohmmeter - Optional Onboard Computer
Megger MTO300/330A Automated Six-Winding Transformer Ohmmeter - Optional Onboard Computer
£14,675.00
£17,610.00 inc. vat
  • Automated eight-terminal/ six-winding resistance measurement
  • DC test current up to 10A
  • Built-in discharge circuit
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Offer
Megger MTO250 Transformer Ohmmeter
Megger MTO250 Transformer Ohmmeter
£15,595.00
£18,714.00 inc. vat
  • DC test current up to 50A
  • Dual set of potential inputs and dual-channel display
  • Test the winding plus contact resistance of LTC and assess the “make-break” transition event
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About High Voltage Insulation Testers & Megohmmeters

All electrical insulation is susceptible to degradation over time. At the start of its service life, the insulation applied to an electrical system - whether it's a common appliance such as a kettle or a high-powered device like a transformer - should be strong enough to make leakage current non-existent or negligible and ensure that the electrical installation/appliance can be used safely.

However, insulation will degrade over time leading to more potential leakage current. As such the system becomes less and less safe over time, and this is exactly why insulation resistance tests must be regularly carried out to ensure that the resistance of the insulation is sufficiently high.

We have a range of different insulation testers depending upon the application they are to be used in.