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V&T EcoDriveCN® medium voltage motor soft starters on dust removing fan

As an ideal solution for medium voltage motor applications, V&T EcoDriveCN® medium voltage motor soft starter and motor control panel is a reliable, heavy duty one.

Sophisticated and intelligent motor control ensures smooth acceleration and deceleration as it minimizes the effect of high in-rush current and mechanical torque shock.

The steel mill used the winding motors to drive the dust removing fans. Because the winding motors were damaged for a few times, the production was badly affected. So, squirrel cage induction motors are used to replace the old winding motors.

The environment of steel mill demands small starting current, and good protection for the motor.


After discussing, the client of this steel mill decides to choose V&T EcoDriveCN® medium voltage motor soft starters.

The protection function of V&T EcoDriveCN® medium voltage motor soft starters include:
Overload protection: total 6 levels of protection. It protects through the configured load protection curve.
Over-current protection: 20% ~ 500% Ie. It achieves current protection via monitoring the running current.
Over-voltage protection: When the voltage of mains rise up to 120% rated voltage, delay 1 ~ 10s (adjustable), trip protection.
Under-voltage protection: When the voltage of mains drop to less than 70% rated voltage, delay 1 ~ 10s (adjustable), trip protection.
Phase loss protection: When any phase is loss, trip protection.
Phase sequence protection: Can set to monitor the phase sequence. When it detects the error of phase sequence, protect.
And related protection function.


The configuration on site:
Starting voltage: 50%.
Current limiting factor: 450% Ie.
Starting time: 29s.

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