Skip to main content
Home
  • Products
    • Product type
      • Asset performance management
      • Cable fault location, testing, and diagnostics
      • Cable online monitoring
      • Circuit breaker testing
      • Electrical insulation testing
      • Electrical resistance testing
      • Electrical systems backup and quality
      • Electric vehicle charge point testing
      • Grid measurement devices and testing
      • Low voltage installation testing
      • Megger Industrial Reliability
      • Motor and generator testing
      • Partial discharge testing and monitoring
      • Relay protection testing
      • Power transformer testing and monitoring
    • Work sector
      • Cable contractors
      • Distribution networks
      • Electric substations
      • Electricians
      • Heavy industry, mining, and manufacturing
      • OEMs (Original Equipment Manufacturers)
      • Power generation
      • Renewables
      • Transmission
      • Transportation
      • Water utilities
    • Asset under test
      • Arresters
      • Batteries
      • Busbar joints, welds, and bonding
      • Bushings
      • Cables
      • Circuit breakers
      • Circuit testing
      • DERs (Distributed Energy Resources)
      • Digital substations
      • Electric meters
      • Generators and motors
      • Instrument transformers
      • Insulating fluid
      • Overhead lines
      • Relays
      • Transformers
  • About us
  • Where to buy
  • Support
  • Events
  • Careers
Search
Language Icon

Transformer insulation testing

Megger’s comprehensive portfolio of products for transformer insulation testing and analysis, both in the factory and on-site.

Narrow down your selection

All Power transformer testing and monitoring DGA monitoring Multi-function transformer test systems Transformer insulation testing Insulating oil testing Transformer resistance testing Transformer short-circuit impedance Transformer turns ratio testing Transformer frequency response
Show 3 more Show 3 less
  • Show discontinued products

TAU3 true three-phase transformer winding analyser

Transformer diagnostics in a single instrument
Explore

5 kV, 10 kV and 15 kV insulation resistance testers

MIT515, MIT525, MIT1025, MIT1525 and S1-568, S1-1068, S1-1568 insulation resistance testers
Explore

DELTA4000 series 12 kV power factor/tan delta testers

The DELTA4000 series tests electrical insulation in power apparatus
Explore

IDAX series of insulation diagnostic analysers

Measure moisture content, tan delta/power factor and oil conductivity using DFR in the field - IDAX300/300S, IDAX322, IDAX350
Explore

TRAX Multifunction transformer and substation test system

Portable and compact system packed with features that maximise asset condition awareness
Explore
New

Guard Interconnecting Lead and Strap kit

Explore

OTD - Oil Tan Delta test set

The OTD tests the electrical insulation of the oil in high voltage transformers and switchgear.
Explore

OTS PB and OTS AF series of insulating oil test sets

Fully automatic insulating oil dielectric breakdown testers
Explore

CDAX 605

High precision capacitance and dissipation factor measuring instrument
Explore

VAX020

2 kV high voltage amplifier
Explore

Footer menu

  • Discover
    • Products and solutions
    • Where to buy
    • News
    • About us
    • UK Careers
    • Blog
  • Legal
    • Legal Information
    • Cookie policy
    • Modern slavery act
    • Privacy policy
    • EU declarations of conformity
  • Our brands
    • AVO Training
    • AVO Diagnostic Services
    • Diagnostic Solutions Limited
    • SebaKMT
    • States
Preferences
Change location and language
Change cookie settings

Connect with us

  • Megger
  • MeggerUK
  • Megger
  • Megger
Megger Logo

Copyright © 2025 Megger, all rights reserved.

Choose location and language

Country not found? Choose a region

Brazil (Português)
Brazil (Português)
Canada (English)
Canada (English)
Canada (Français)
Canada (Français)
Česko (Czechia)
Česko (Czechia)
China (Chinese)
China (Chinese)
France (Français)
France (Français)
Germany (German)
Germany (German)
Italy (Italiano)
Italy (Italiano)
Poland (Polish)
Poland (Polish)
Spain (Spanish)
Spain (Spanish)
Sweden (Swedish)
Sweden (Swedish)
Türkiye (Turkish)
Türkiye (Turkish)
UK (English)
UK (English)
USA (English)
USA (English)
Rest of the world (English)
Rest of the world (English)
Latinoamérica (Español)
Latinoamérica (Español)