Reverse-forward Starter
Reverse-forward starter used in motor control. This type of starter is commonly used to control the direction of three-phase induction motors.
Reverse-Forward Starter Working Principle:
A reverse-forward starter consists of two contactors-one for forward rotation and another for reverse rotation-along with overload protection and interlocking mechanisms.
Basic Components:
1. Two contactors (Forward & Reverse)
2. Overload relay (for motor protection)
3. Push buttons (Start & Stop)
4. Interlocking mechanism (Electrical & Mechanical)
5. Power supply & wiring
How It Works:
Forward Rotation: The forward contactor
energizes, connecting the three-phase supply in its normal sequence (R-Y-B).
Reverse Rotation: The reverse contactor swaps
two phases (e.g., R and Y), changing the motor's rotation.
Interlocking: Prevents both contactors from being energized simultaneously, avoiding a short circuit.
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