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
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Time Domain Reflectometers
Locating high and low impedance faults on paired metallic cables is a crucial yet often difficult task for a telecoms engineer. Megger designs TDRs specifically for the communications industry, which makes each unit a safe, application specific tester that can be used on virtually all communications cable types. The wide range of TDRs makes it easy to choose the tester with the resolution and range you need.
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DC Insulation Testing
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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Transformer Insulation Testing
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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Turns Ratio Testing
The transformer turns ratio test, or TTR test, confirms that the transformer has the correct ratio of primary turns to secondary turns. Using this test correctly can help to identify tap changer performance, shorted turns, open windings, incorrect winding connections and other faults inside transformers. Megger’s range of TTR testers are robust to withstand the harsh conditions that some transformer testing in. The range includes varying features to simplify and speed up testing as well as 3 phase TTR testers and PT and CT TTR testers.
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Low Resistance Ohmmeters
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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Motor and Generator Testing
Megger loop testers offer both traditional measuring techniques and state of the art “non-RCD Tripping” technology.
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Resistance, Ground Testing, Battery And Power Quality
Our testing equipment works wherever you are, whenever you need it, with precision and reliability.
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Software
Megger offers a complete range of software for the certificating contractor under the name PowerSuite®.
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Ground Testing
Ensuring an effective earth system is essential in a telecommunications system, and Megger is expert in earth testing having been there right from the start. These days Megger offers top end systems for design and soil surveys as well as tough easy to use testers for field engineers. We have tried to make the testers self checking as much as we can, to allow you to concentrate on collating and understanding the results.
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VLF Insulation Testing
VLF testing uses very low frequencies as part of an AC cable maintenance routine. VLF testers are smaller and more practical than AC testers but output the same amount of power as a 50 Hz mains device. This combination of size and power makes Very Low Frequency cable testing perfect for testing longer sections of cable and apparatus
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Electric Motor QC Systems
Megger Baker Instruments designs and manufactures electric motor test systems for original equipment manufacturers (OEMs) that help ensure their motors, generators and coils meet or exceed the quality expectations OEMs set with their customers. Baker motor quality control (QC) systems include the Baker WinAST automated stator tester, the Baker HV WinAST and the Baker WinTATS traction armature test system. Each incorporates the most effective electric motor test processes into a single automated instrument and can be customized to meet the specific testing needs of a given manufacturer.
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AC Insulation Testing
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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Oil Tan Delta Tester
OTD
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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Static Electric Motor Analyzers
Baker Instruments’ static motor test equipment is the industry-leading suite of products for detecting weaknesses and faults in the insulation systems of electric motors, generators and coils. Employing both low-voltage and high-voltage tests – such as Baker’s signature surge test - these essential troubleshooting and predictive maintenance tools allow maintenance professionals to assess any need to maintain or replace specific motors and generators that support their business. Equally at home in the motor repair shop or on a plant floor, these testers ensure that the electrical condition of your rotating machinery is understood.
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Multimeters and Clampmeters
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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STATES®
STATES® Terminal Blocks and Test Switches are designed and manufactured by Megger to facilitate the calibration, disconnecting, troubleshooting, checkout and testing of meters, relays, instruments, transducers and control systems.
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SebaKMT
Worldwide, we are the leading company for the development and manufacture or measurement equipment for diagnosis of the state of a network and for fault location. Our sectors of the market include electricity supply networks as well as communications and pipe networks. A member of Megger Group.
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Power Diagnostix Systems GmbH
Power Diagnostix offers instruments for partial discharge (PD) measurement and monitoring (ICM™ Technology), loss factor (LF/DF) measurement devices, fiber optic analog and digital signal transmission systems, high voltage test and control systems and cabinets, plus many other tools for high voltage diagnostic applications.
