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How can the star and delta connections be combined to produce a star delta starter for an electric motor?
Wiki User
∙ 14y ago
It depends on the motor. You need to look at the specifications of the particular motor. In general, if there are only three conductors, not counting earth, then it is delta; if there are four, then it is star; if there are six, then it is star-delta and you need a star-delta starter.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoYou have to have a set of switches, with each set of switches setup in parallel from Supply to Ground. The switches will be connected as follows: Supply=> switch1=> node A => switch1 => Ground. Given a 3 phase motor, you will have 2 sets of switches in parallel:
____________________
| ........|........ |........ |
| ........S1..... S3 ....S5
| ........|......... |....... |
| ........|_a .....|_b ...|_c
V .......|..........|....... |
| ........| ........|........ |
| .......S4.... S6 .......S2
|____|___ _|______|
gnd
(ignore the periods, I was having formatting issues)
a, b, and c are all connected to some sort of load, and are connected in a delta configuration:
a____z2_____b
|.................. __|
z1........ _z3_|
|_____|
c
By selectively turning on and off switches, you will create a loop, so for switches 1,2 on, you will have V=> z1 (z2+z3)=>gnd. Basically current will flow from the source, through z1 (the load between a&c)which will appear to be in parallel with z2 and z3.
You can do the same for 2,3 on; 3,4 on; 4,5 on; 5,6 on; and 6,1 on. These will create a wave form. You could also choose to have 3 switches on at a time and go from there.
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Wiki User
∙ 11y agoive seen 2 speed motors with six wires
they are fixed voltage one winding 1 2 3 is 2 pole 1800 rpm
the other 4 5 6 is 3 pole for 1200 rpm
480/240 volt delta is usually 12 wire
480/240 y is usually 9 wire
look for a nameplate
Wiki User
∙ 14y agoA star delta starter is one complete unit with all of the interlocks built in. The three phase supply is connected to the top terminals and the six wires from the motor connect to the appropriate terminals on the starter. All that has to be connected into the circuit is the timer that tells the starter when to drop the star starter coil and energize the delta starter coil to change from the start star connection to the run delta connection.
Wiki User
∙ 10y agoto identify beginning and ends of windings on star delta motor
Wiki User
∙ 11y agono the motor to start is connected star converted delta connection
Wiki User
∙ 11y agoIf we were not connect motor in delata & run on DOL above 10HP that time Two condition happen
1) Stress on contactor
2) Voltage drop
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Direct starter would normally be applied for a 2 kW electric motor?
if the load is relatively lo inertia then no problem
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What is Direct online Starters?
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Where is and how do you remove the starter motor on your 90 golf gl?
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Dirty or loose connections or a bad starter.
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Dead battery, loose battery connections, bad engine ground connections, bad starter connections, bad starter, broken ring gear, bad ignition switch
What would make a starter not work?
Battery condition/charging system, Dirty/loose battery connections, Dirty/loose connections at the starter, Worn out starter solenoid, Worn out brushes in starter motor, Worn out starter drive gear/flywheel assembly, Faulty or out of adjustment neutral safety switch, Faulty starter relay,
19hp kohler engine on your ryobi riding mower just clicks when trying to start?
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1985 Chevy G20 van starter clicks but doesn't start?
Proper battery connections could be at fault, how old is your battery? Check for loose and corroded terminals on your battery and starter connections. Also the starter might just be bad.
Who invented the electric starter?
Patterson
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Flat battery, neutral safety switch, starter realy poor battery connections.
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Clicking sound when starting car?
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