SDQ-A Water-Resistance Soft Starter
SDQ-A soft-starts wound-rotor induction motors using adjustable water resistance in the rotor circuit. Electrode movement continuously reduces resistance as the motor accelerates.
Typical Applications
Motors:Wound-rotor induction motors.
Supply: Three-phase 50 Hz; 380 V, 6 kV or 10 kV.
Product Overview
Typical Challenges
Product Features
Adjustable water resistance is connected in the motor rotor circuit.
Rotor-circuit Starting
A mechanical drive adjusts the gap between moving and fixed electrode plates.
Electrode Adjustment
Resistance decreases continuously as the motor accelerates.
Continuous Resistance Change
The starting method provides low starting current for wound-rotor motors.
Low Starting Current
Rotor resistance supports increased starting torque.
Higher Starting Torque
For three-phase 50 Hz wound-rotor motors at 380 V, 6 kV or 10 kV.
Motor Supply Compatibility
Specifications
Data Download
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format
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Date
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Success Stories
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Wound-rotor Compatibility
Wound-rotor motors need a starting solution connected to the rotor circuit.
Rotor Resistance Control
Rotor resistance must decrease progressively during acceleration.
Starting-current Control
The starting process requires low motor starting current.
Starting Torque
Motor acceleration requires sufficient starting torque.
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