This is for specialised measurements of military power sources that run at 400Hz rather than the far more common 50Hz (Europe) or 60Hz (US) mains frequencies. 400Hz power is normally used for aircraft equipment as the transformers for 400Hz can be made far lighter. The set includes a hand held Amp clamp for clipping around high current conductors to measure AC current flow in a non-contact manner. This has its own compartment in the clam shell case.
Prop ID: 3975
Width: 54 cm
Height: 36 cm
Depth: 22 cm
Age: 1980s-1990s
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