Novel telescopic type low-voltage tong-type ammeter
A clamp ammeter and retractable technology, which is applied in the direction of measuring current/voltage, measuring electrical variables, instruments, etc., can solve the problems of low test efficiency and unsafety, and achieve convenient reading and recording, convenient operation, and convenient portability Effect
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[0016] Example: Combine Figure 1-3 , the telescopic low-voltage clamp ammeter of this embodiment includes: a housing and an insulating telescopic rod 3 fixedly connected to the bottom of the housing, a data display 4 is provided at the bottom of the telescopic rod, and the data display 4 passes through the telescopic rod. The connecting wires are connected to the feed-through current transformers arranged in the casing.
[0017] The housing is a closed annular body composed of a fixed housing 2 and a rotating housing 1 hinged on the fixed housing. A rotating coil 8 is fixed on the rotating housing 1. Under normal conditions, the fixed coil 7 and the rotating coil 8 form a closed loop coil, and the closed loop coil constitutes the core-through current transformer.
[0018] The fixed housing 2 and the fixed coil 7 are generally in a U-shaped structure. The horizontal bar-type rotating housing 1 and the fixed housing 2 are hinged with a pin shaft, and a torsion spring 6 is arra...
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