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
Multimeters and Clampmeters
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The complete range of analog, digital and analog/digital multimeters provide the solution to electrical and electronic fault finding and testing.
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Product
Circuit Breaker Analysis Systems
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When a fault such as a short circuit or current overload is detected by a protective relay, a trip impulse is sent to the circuit breaker. The circuit breaker must function as specified and interrupt the current as soon as possible or severe damage may occur. The damage caused by a malfunctioning circuit breaker can often be catastrophic, resulting in significant damage to the electrical system.
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Product
Circuit Breaker Test Equipment
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Providing the in-depth analysis to ensure effective maintenance maximum reliability.
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Product
Oil Tan Delta Tester
OTD
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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. The microprocessor controlled inductive heater means that there is uniformity of temperature throughout the cell, in compliance with IEC 60247, and for cooling a fan effectively speeds up the cell cooling time. The instrument has a temperature measuring range of 10 to 110 C, with an accuracy of 1 C. It can be set to preheat before testing takes place. The automated oil drain facility negates the need to move the oil vessel. User safety is paramount and with this in mind, Megger have designed independent and dual redundant high voltage cut-off circuitry. If for any reason the user needs to abort the test, this can be done so by pressing any key, immediately terminating the test and removing the high voltage. The design of the cell components maximise oil fill rate but minimise turbulence in oil flow and eliminate trapping of air. With only 32 cell components, it is easy to assemble and disassemble.
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Product
Cable Locators, Route Tracers And Height Meters
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CHM cable height meters are easy to use, handheld devices which use ultrasound to determine the height of up to six overhead cables and wires. They are designed to measure cable sag, overhead clearance and cable heights up to 23 m, with separate products dedicated to the power and telecommunications markets. As a safe alternative to telescopic ranging sticks, there is no physical connection to the cables.
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Product
Low Resistance Ohmmeters
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Some times know as Ducter testers, these are highly accurate, easy to operate instruments that measure resistance with resolution as fine as 0.1 micro-ohm. Digital micro-ohmeters and DLROs measure contact resistance of switch and circuit breakers, aircraft frame bonds, and rail and pipeline bonds just to name a few of the applications. Megger has models available for testing using test currents from 0.5 mA to 200 amps covering a multitude of applications that require precise low-resistance measurements.
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Product
Utility Service And Leak Detection
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Accurately preparing the site to make sure you know where all the utility services run can pay handsomely by avoiding those expensive digger accidents.
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Product
Resistance, Ground Testing, Battery And Power Quality
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Our testing equipment works wherever you are, whenever you need it, with precision and reliability.
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Product
Insulation Testing
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Measures the total resistance between any two points separated by electrical insulation.
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Product
Electricians' Accessories
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A selection of voltage detectors, proving units, test leads, certificate books and a DVD, which make it that bit safer and easier to get the job done.
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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
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
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
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
DC Overvoltage or Withstand Testing
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Overvoltage protection is critical to the long-term health of any cable. DC overvoltage testing (also known as withstand testing) is the most popular method of general condition and integrity assessment in the power, industrial and domestic markets. This method of testing is distinguished a number of key advantages:

















