Electronic relay

Details Electronic relay Electronic relay

1997-01-23

1998-10-13

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361794, H01H 4728

Patent

active

058221689

ABSTRACT:
An electronic relay including current sensors (11, 12, 13) mounted, between terminals (L1, T1, L2, T2, L31, T3), in series on alternating current power supply lines to a load (M). A back of a case (1) of the electronic relay includes a power card (C1) linked to the current sensors (11, 12, 13) and connected via connectors to electronic daughter cards (C2, C3, C4) carrying lateral terminal blocks (B1 and B2) which have outputs in the lateral openings of the case. A front of the case (1) includes a dialogue and communication card (C5) connected to at least one of the daughter cards (C3).

REFERENCES:
patent: 4713718 (1987-12-01), Quayle
patent: 5390081 (1995-02-01), St. Pierre
patent: 5557506 (1996-09-01), Wood et al.
Michael BABB, "Low-Cost Motor Protection Becomes Reality in the 1990s", Control Engineering, vol. 41, No.13, (1994), pp. 43-45.

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