Megger Group Ltd.
Megger has been a leader in electrical test and measurement globally for 130 years. From power generation to the power outlets in your home, Megger products cover almost every application within the Electrical Supply Industry.
- +44 (0) 1304 502101
- uksales@megger.com
- Archcliffe Road
Dover, CT17 9EN
United Kingdom of Great Britain and Northern Ireland
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Product
DC Insulation Testing
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Diagnostic insulation testing today represents over a hundred years of constant development. When Sydney Evershed pioneered the first insulation tests in the late 19th century, the only measurable values were insulation at 500 volts and a basic continuity check. However, measurement techniques have continuously evolved to keep pace with new insulation technologies. From electronic design and household wiring to generators and power transmission systems, all different kinds of insulation must operate at a safe minimum value.
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Product
AC Insulation Testing
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AC insulation tests are a popular response to the increasingly demanding industrial, power and domestic marketplaces. Insulation materials have had to become more efficient to keep up with demand; more efficient equipment requires less insulation material to meet the minimum acceptable value of insulation resistance. In turn, cables have become smaller and lighter. However, under certain higher stress testing conditions such as DC testing, cables like Crossed Linked Polyethylene (XLPE) can quickly degrade.
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Product
Dynamic Electric Motor Analyzers
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Baker's dynamic motor test and monitoring instruments are built to conduct condition monitoring tests of motors and generators from a Motor Control Centre (MCC), or through a Baker EP1000 connection unit. The Baker EXP4000 dynamic motor analyser is a low-voltage, AC- and battery-operated instrument that test motors and generators while they are in operation. The EXP4000 provides health and performance data on the motor, the motor's load, and incoming power to assess motor performance and suitability in context of the entire machine system it supports.
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Product
Primary Injection Test Systems
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Primary current injection testing is utilised in high current/high voltage scenarios found at large electrical installations such as substations. A large current (between 100A and 20,000A depending on system specifications and test requirements) is injected directly on the primary side of the electrical system such as a circuit breaker. The objective of the test is to identify how the system operates under various levels of current load.
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Product
Transformer Insulation Testing
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The primary test methods used to assess the condition of the active insulation components in transformers and bushings, on site, include:1) power factor/tan δ,2) variable frequency power factor/tan δ (1 - 500 Hz)3) dielectric frequency response (DFR) [a dielectric response method], and4) moisture in oil measurements (for transformers).
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Product
Single Phase Relay Testing
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Megger’s single phase relay test sets are essential items in the relay engineer’s toolbox. Lightweight, rugged with high compliance voltage and test current. Ideal for testing distribution networks, industrial relays, distance relays in rail power networks and many other applications.
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Product
Portable Appliance Testing (PATs)
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In response to ever growing industry requirements, Megger offers a sophisticated line of electrical product testing equipment.
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Product
Loop Testing
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Megger loop testers offer both traditional measuring techniques and state of the art “non-RCD Tripping” technology. Use these products to determine the prospective earth fault current, which is the maximum current able to flow in a phase-earth fault in an installation, and also to indicate the prospective short circuit current which is the maximum current able to flow in the event of a phase-neutral fault.
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Product
Oil Tan Delta Test Set
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The Oil Tan Delta (OTD) is a laboratory instrument, which measures the Tan Delta, Resistivity and Relative Permittivity of insulating liquids. These tests give a wider picture of the overall quality of the insulating oil, and will indicate if there is any contamination. Megger has developed features of the OTD to ensure that productivity levels within laboratories are maximised. OTD test sets are supplied with sixteen standard test sequences pre-installed, to support a set of international standards.
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Product
Motor and Generator Testing
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Megger loop testers offer both traditional measuring techniques and state of the art “non-RCD Tripping” technology.
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Product
Photovoltaic
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For solar panel installations, problems such as insulation resistance degradation or issues with ground/earth continuity can pose a risk to safety as well as efficient operation. Continuous and predictive maintenance is essential to ensure regulatory compliance as well as the prevention of electrical hazards and fire risks, and enables operators to ensure the optimal performance of PV installations.
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Product
Multifunction Installation Testers
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Megger multifunction installation testers are capable of performing various electrical tests.
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Product
Partial Discharge
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Is a localized dielectric breakdown (DB) (which does not completely bridge the space between the two conductors) of a small portion of a solid or fluid electrical insulation (EI) system under high voltage (HV) stress.
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Product
Three Phase Relay Testing
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Our comprehensive and intuitive relay software speeds up testing times with a vast library of pre-defined test regimes or manual operation.
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Product
Cable Sheath Fault Location
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Locating cable sheath faults is one of the last steps in cable testing, occurring after you have identified the existence of a cable fault via the identification procedure based on your specific site variables and the type of system you are working on

















