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of Trafford Park, Manchester.
Conducted switchgear-testing programme for the constituent firms (presumably part of AEI).
1934 A sixteen-element electromagnetic oscillograph was made for the company by Metropolitan-Vickers.
1934 The 3 switchgear manufacturing companies in the AEI group - BTH, Ferguson Pailin and Metropolitan-Vickers Electrical Co were jointly erecting a high power testing plant to handle rupture tests on the largest types of switches. It was initially equipped with a generator with a caapacity of 1500 MVA. The stator weighed 80 tons and was spring-mounted. 1200 HP were required to get the generator up to speed in 15 minutes, 300 HP for light running, and it took 30 minutes to run down.