Benshaw is pleased to offer Solid-State Starter training at our facilities in. Benshaw Product Downloads. Catalogs: Benshaw Product Catalog. Solid State Motor Control. Technology. Publication #:
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Benshaw Advanced Controls & Drives
Electrical current from the load heat sink 31 is conducted from the assembly via load power lug The starter control assembly of claim 15 having at least one stationary contact mounted on each heat sink; and having three movable shunting contact means for selectively engaging respective pairs of said stationary contacts to establish an electrical current shunting path between respective pairs of said line and load heat sinks. Nature of Business Manufacturer.
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 startdr heat sinks being arranged in paired relation. Except for the gating circuits all elements of the starter are mounted on the heat sink. Therefore, any reduction in interconnection wiring can result in a significant space saving in the respective motor control enclosures.
One such embodiment would include a three phase network similar to that shown in FIG. Get best deals for coconut. Soft Starter Panels in Faridabad. The problems inherent with such separate bypass contactor in parallel to the semiconductor device have been that the contactor device itself requires a significant amount of space in which to be mounted and the electrical wiring required to provide such bypass circuit occupies additional enclosure space.
In the case of the bypass current path, the heat sinks may have a stationary contact on both the incoming and outgoing heat sinks such as to provide a shunting current path between adjacent heat sinks and around the semiconductor. Contact spring 9 maintains proper pressure between the movable contact 26 and the stationary contacts 24 and 25 during closure. 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.
Benshaw Marine Duty Starter Packages
Motor starters are also used to control elements other than motors, such as resistance heaters, lighting, and battery chargers. A stationary contact mounted on the incoming heat sink similarly provides for the incoming line contactor function without the necessity of wiring to a separate stand alone device.
The interconnection wiring in the case of motor starting is significant because in normal industrial motor control applications, the wiring size required to handle full motor current conditions is quite large. The above contacts and solenoids can be directly mounted to a heat sink assembly thereby providing the benefits of unitized construction. Solid State Reduced Voltage Starters! This shunting path between adjacent heat sinks created by stationary contact 4a, bar 5, and stationary contact 4b would then carry the load current between the adjacent heat sinks 2a and 2b.
The starter control assembly of claim 1 wherein said stationary contact includes a renewable wear surface of electrically conducting material rigidly attached to said heat sinks. Renewable contact wear surfaces of other styles can also be used in the invention. A starter control assembly comprising: Since this load current is bypassed around the semiconductors, the semiconductors 30a and 30b generate little heat and the whole unit runs at a much lower temperature.
Benshaw manufactures a wide range of low voltage solid state motor controls. MX3 Motor Control Technology: The starter control assembly of claim 15 having a stationary line contact mounted on each of said line heat sinks, and having three movable line contacts that can selectively engage said stationary line contact to establish an incoming path between said connector means and said line heat sink.
The starter control of claim 10 wherein said stationary line contact is mounted on said line heat sink by a bracket extending generally perpendicular from the mounting surface of said line heat sink.
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While the stationary contact shown in the figures have been mounted on the upper surface of the heat sink, it is equally feasible in applications, where desirable, to mount the stationary contacts upon the lower surface or other areas of the heat sinks. When full voltage operation and reduced heating is desired, solenoid 19a is energized causing shorting bar 15a to contact stationary contacts 14a and 14b mounted on the respective heat sinks 12a and 12b.
Benshaw Xe20060004-3-2 Solid State Starter
The starter control assembly of claim 33 wherein said surface is coated with a wear resistance material. The semiconductors 3a, 3b could be silicon thyristors which through gating circuits not shown can be controlled in their firing phase relationship to control the output voltage and current.
So check out the Benshaw website and if you don’t find the info you’re looking for, give us a call and we’ll send one of our application engineers out to discuss your needs. Rectangular frame 28 is preferably made of an insulating material which provides guidance to the movable contact 26 so as to properly and reliably align benhaw movable contact bar 26 with the stationary contacts 24 and Click for automatic bibliography generation.
The starter control assembly of claim 23 including three solenoids, each mounted on respective line heat sinks. Startfr starter control assembly of claim 1 wherein said stationary contact includes an electrically conducting surface of said heat sink.
In such embodiment there is no need for solenoids 18a and 19a. A three phase load, such as a three phase motor, could be connected between outgoing staarter 20b, 20d, 20f. The starter control assembly of claim 38 wherein said surface is coated with a wear resistance material. It’s the grandfather of the heap. When the motor reached its desired operating criteria, such as full line voltage, then solenoid 9 would be energized forcing stare contact bar 5 against stationary contacts 4a and 4b.
The starter control assembly of claim 30 wherein said wear surface is a rigid member attached by a fastener to said heat sinks. A solid state motor starter assembly having controlled semiconductors mounted between heat sink members.