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History of the manufacturer  

Megger Group Limited, Dover,

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Name: Megger Group Limited, Dover,    (GB)  
Abbreviation: megger
Products: Model types Others

Megger Group, Dover, England, UK, Limited is a company that manufactures electric test equipment and measuring instruments for electrical power applications. The company is known for their original insulation testers, and supply products related to the following areas: cable fault locating, earth/ground testing, low resistance measuring, power quality, electrical wiring, insulation testers, multimeters, portable appliance testers, clamp-on meters, current transformers, etc.

The company logo depicts the word Megger with red capital "M" and the remaining letters in black, all on white background.

For many years, the James G. Biddle Company in Pennsylvania, was the USA importer of Megger products, as well as a manufacturer of equipment under their own name. In 1989, using concepts introduced by Commonwealth Edison Company of Chicago, Biddle started development of a range of equipment to test the integrity of large battery systems, which led to the BITE (Battery Impedance Test Equipment) line of products.

In 1991 Biddle, Megger and MultiAmp joined together to form AVO International. The use of the Biddle trademark was retained for many of products still available today. Biddle was one of the first companies to provide commercial cable fault locators.

Founded: 1858
Production: 1858 -
Megger Instruments Limited was based at AVO’s Dover site, in Archcliffe Road, Dover, CT17 9EN, Kent, England, which is also the present location of the UK branch of the company. In 1991, due to the popularity of the AVO products the company changed the name to AVO Megger Instruments Limited. In 2000 the company became known as AVO International Holdings Limited and in 2002 as AVO International Limited. Finally the whole Megger group changed its name to Megger Group Limited in 2002, as it is known today. The Dover site employs around 230 people. [28] In total (including the sales channels) Megger Group Limited employs around 1500 people worldwide. In recognition of the ground breaking inventions, which made it possible to build the Megger group the main meeting rooms at the Dover site are named after Evershed and Macadie.

This manufacturer was suggested by Mark Wm. Manis.

Some models:
Country Year Name 1st Tube Notes
GB  75 Line-earth loop tester LT3 BC107  Line-earth loop tester = contrôleur de l'impédance (en Ohms) de la boucle de terre.Le cont... 
GB  77 Earth Tester Biddle Catalog 63220   This Earth Tester was sold in the United States by James G. Biddle Co. of Pennsylvania und... 
GB  60 Megger Insulation Tester MEG   This unit uses a constant-voltage transformer to generate a 500 volt DC test voltage for t... 
GB  90 Analog-Digital Insulation Meter BM80MIN/2   Insulation meter with test voltage selectable from 50 to 1000 volts in 5 steps. 0 to 200 G... 
GB  50 Earth Tester Series 2   Earth tester with crank generator and index meter. Four-terminal resistance measurements. 


Further details for this manufacturer by the members (rmfiorg):

From Italian magazine" L'Elettrotecnica" number 9 September 1958.tbn_gb_megger_products.jpg


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