Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1995-04-26
1997-09-23
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340500, 340635, 340638, 340659, 340664, 323239, 323277, 361 1, 361 57, 361 63, 361 87, 361 91, 307 39, 307131, 307140, G08B 2300
Patent
active
056709366
ABSTRACT:
A power controller (10) for supplying power to a power distribution network (N) in which power from a polyphase source (G) is routed to using equipment (E) connected to the network through the power controller. A plurality of solid-state power devices (82) switch each separate phase of the polyphase power to the equipment. A firing circuit (14) controls gating of the switches to route the power. Fuses (F) are connected between the switches and the using equipment to interrupt power flow to the equipment if excessive current begins to be drawn. A con, roller (20) controls a shutdown sequence employed by the controller to eliminate current spiking at shutdown. The various components are housed in an enclosure (22) which includes a mounting structure (56) for mounting the aforesaid components. A cooling system (26) employs a fan (88) for directing air flow through the mounting structure to cool the components. The circuit breaker and fuse mounting configurations are such as to allow the enclosure to be more compact than previous, similar enclosures so to provide a smaller, cheaper, more versatile power controller installation.
REFERENCES:
patent: 4955069 (1990-09-01), Ionescu
patent: 5450334 (1995-09-01), Pulizzi et al.
patent: 5537026 (1996-07-01), Estes et al.
Estes Wayne S.
Russell Carl D.
Crosland Donnie L.
Emerson Electric Co.
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