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The poles can be varied at a ratio of 1:2 and thus the speed can be varied at 2:1. [ 7 ] [ 8 ] [ 9 ] Normally, the electrical configuration of windings is varied from a delta connection (Δ) to a double star connection (YY) configuration in order to change the speed of the motor for constant torque applications, such as the hoists in cranes .
This popular rechargeable scrubber is currently just $40 — down from $48. If you're a first-time QVC shopper, you can also take an extra $20 off your order of $40 or more when you use the code ...
[2] [3] Another way to limit motor starting current is a series reactor. If an air core is used for the series reactor then a very efficient and reliable soft starter can be designed which is suitable for all types of 3 phase induction motor [ synchronous / asynchronous ] ranging from 25 kW 415 V to 30 MW 11 kV.
By adjusting the shape of the bars in the rotor, the speed-torque characteristics of the motor can be changed, to minimize starting current or to maximize low-speed torque, for example. Squirrel-cage induction motors are very prevalent in industry, in sizes from below 1 kilowatt (1.3 hp) up to tens of megawatts (tens-of-thousand horsepower).
[2] Vibratory weigh fillers: provide a blend of accuracy, speed, and versatility for linear feeders. Every weighing-hopper is designed to handle the needs for precise weights. [3] Flow fillers: designed for liquids, oils, and thin food products. These fillers are designed when they fill a bottle or tub that enters the machine, the ejects the ...
Wetted-throat venturis with round throats (Figures 2 and 3) can handle inlet flows as large as 88,000 m 3 /h (40,000 cfm). [4] At inlet flow rates greater than this, achieving uniform liquid distribution is difficult, unless additional weirs or baffles are used.