Industrial three-phase isolation ampere meter
An ammeter and three-phase technology, which is applied in the field of industrial three-phase isolated ammeter, can solve the problems of strong interference and evil, and achieve the effect of reliable transmission without affecting the operation of equipment
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[0014] Please refer to the attached figure 1 As shown, the A-phase sampling resistor (1) amplifies the sampling signal through the A-phase differential amplifier (4) and connects to the single-chip microcomputer (7), and the B-phase sampling resistor (2) amplifies the sampling signal through the B-phase differential amplifier (6) and then connects to the single-chip microcomputer (7) connected, the C-phase sampling resistor (3) amplifies the sampling signal through the C-phase sampling resistor (3) and then connects with the single-chip microcomputer (7). (8) Display the current, and output it to the interface circuit (10) through the photoelectric isolation module (9) at the same time, for collection and use by other automatic control instruments.
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