Doubar One solution to reduce the heat generated in the startr devices during normal operation of electrical equipment has been to wire and mount a separate bypass contactor in parallel with the semiconductor devices. Also a single solenoid actuates a single shorting bar 15a which in turn contacts stationary contacts 14a and 14b. MX3 controllers, power components, software, and sensors are all designed, built, and tested to perform as an integrated control system; eliminating the coordination and performance problems inherent in other forms of reduced voltage starting. Mechanical contactors generating less heat than the semiconductor device can be used. The starter control assembly of claim 1 wherein said at least two heat sink members include six heat sinks, three being line heat sinks and three being load heat sinks being arranged in paired relation. The starter control assembly of claim 4 wherein said shunt frame means at least partially extends into the space between said line and load heat sinks.
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Samuzshura The starter control assembly of claim 16 wherein said stationary contact includes a renewable wear surface of electrically conducting material rigidly attached to said heat sinks. Except for the gating circuits all elements of the starter are mounted on the heat sink. When the incoming solenoid 27 is activated, moving the armature of the solenoid 27 to the right as viewed in FIG. The starter control of claim 11 wherein said connector means includes lug means for connecting an electrical conductor and an associated stationary contact rigidly and electrically connected to said lug means; and said lug means and said associated stationary starteer being rigidly mounted to said line heat sink and electrically insulated from said line heat sink when said movable line contact is in a disengaged state.
Benshaw is so confident in their products that they guarantee solkd low voltage solid state starter and every medium voltage control for three full years. Similarly the movable shunting bar 15a on assembly 11a could be mechanically joined to operate from solenoid 19b. Such bypass contactor would normally be a three phase magnetically operated contactor wired in parallel to the semiconductor device.
The starter control assembly of claim 1 wherein said at least one stationary contact includes at least one stationary contact mounted on each of said heat sinks. The starter control assembly of claim 21 wherein said connector means includes lug means for connecting an electrical conductor and an associated stationary contact rigidly and electrically connected to said lug means, and said lug means and said associated stationary contact being rigidly mounted to said line heat sink and electrically insulated from said line heat sink when said movable line contact is in a disengaged state.
This device acts as an electrically operable mechanical disconnect of bensjaw line from the load. The functional bypass circuit is established through stationary contact 38 on the incoming heat sink and stationary contact sstarter on the outgoing heat sink. Soft Starter Panels in Faridabad. It is an object of the present invention to reduce the heat generated in the control enclosure without the need for separate stand alone contactor devices and their associate interconnected wiring.
The starter control of claim 11 wherein said movable line contact is activated by an electrical solenoid mounted on said line heat sink. Starger device with housing of varistor material. In addition to the bypass contactor, many motor starter applications also require an in-line contactor. The starter control assembly of claim 1 wherein said at least one stationary contact includes at least one stationary contact mounted on each of said line and load heat sinks; and said movable contact means engages said stationary contacts on said line and load heat sinks to selectively establish a shunt path bensgaw said line and load heat sinks.
When solenoid 9 is activated such as to atarter stationary shunting bar 5 with contacts 4a and 4b, the load current passes from line heat sink 2a to load heat sink 2b via contact 4a, movable contact bar 5, and stationary contact 4b.
View Contact Call Seller Staryer. By varying the resistance between the line and the load, a controlled application of power could be achieved to an AC motor. The starter control assembly of claim 10 wherein said stationary contact includes a renewable wear surface of electrically conducting material rigidly attached to said heat sinks. During full voltage operation a current path could exist via semiconductors 13d and 13c which may be respectively gated to their full-on conducting state.
The starter control assembly of claim 10 further including a line frame means for mounting said movable line contact that establishes an incoming path; and said line frame means being electrically non-conducting. MX3 Motor Control Technology: During operation when the nominal output voltage reaches its maximum value, the bypass solenoid 34 is energized, providing a path for the load current around semiconductors 30a and 30b.
Click Here For More Information. An error occurred while handling your request. The starter control assembly of claim 30 wherein said wear surface is a rigid member attached by a fastener to said heat sinks. When the motor reached its desired operating criteria, such as full line voltage, then solenoid 9 would be energized forcing movable contact bar 5 against stationary contacts 4a and 4b.
Such stationary contacts are engaged by a movable contact bar. One of the advantages of the invention is to provide for a small package solld all major components mounted directly on the heat sink which produces little heating during full voltage operation, and therefore the heat sink can be designed to handle only the heat generated during the anticipated reduced voltage of the duty cycle. Related Posts
BENSHAW SOLID STATE STARTER PDF