Medium Voltage soft starter

Range 1 kV – 15kV

MVC4 is the fully featured medium voltage soft start motor controller

MVC4 soft start motor controllers are designed to start AC motors in any fixed speed application. They provide maximum protection with ‘True Thermal Modelling’ while allowing smooth, stepless control of acceleration and deceleration. MVC4 guarantees power control and protection for your most important assets, vital in an unpredictable world.

Flexible control features and selectable ramping profiles are available to match any application so there is no need to compromise on power. Sealed NEMA 12/IP55 rated enclosures are standard as are built in 120v control power transformers, load-break/fault make disconnect switches, heavy duty SCR assemblies with ring transformer isolation, and line isolation vacuum contactors.

Rated at 500% for 60 seconds, MVC4 will never be the limiting factor in your application. Powerful sustained gate pulse ensures reliable SCR firing without reactors. High end motor protection, fully rated bypass contactor and fibre optically isolated means the MVC4 soft starter is the pinnacle of product development.

Peak performance and protection guaranteed from your critical medium voltage equipment, when your motors are protected and controlled by Motortronics’s MVC4 Soft Starters.

Features and Benefits

True Thermal Modelling

Monitors the motor for excessive thermal conditions due to starting, running and even ambient conditions.

Retentive Thermal Memory

For continuous overload protection even after a complete power loss. When power is restored, the MVC4 Soft Starter remembers the last thermal condition of the motor, observes the off time via a real-time clock and adjusts the thermal model accordingly.

Non-Volatile Memory

Stores the thermal memory without the need for batteries.

True Time Thermal Tracking

Adjusts the thermal model for different cooling rates based on motor temperature, running state or power loss.

Dynamic Reset Response Reset

Is only allowed after the motor has sufficient thermal capacity for a successful restart.

Thermal Model Biasing

Adjusts for heating effects of phase current imbalance or optional RTD inputs.

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