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CTWV Series High-Voltage Solid-State Soft Start Device

The CTWV Series High-Voltage Solid-State Soft Start Device is an advanced motor starting solution designed for high-voltage AC motor applications. It adopts advanced MCU control technology, SCR phase control, optical fiber communication, and intelligent protection functions to provide smooth motor starting and reliable operation.

The CTWV high-voltage soft starter precisely controls the thyristor conduction angle to achieve stepless voltage rising during motor starting, reducing starting current, mechanical impact, and electrical stress. After the motor reaches stable operation, the bypass vacuum contactor closes to allow direct grid operation, improving efficiency and extending equipment service life.

Product Features

• High-voltage solid-state soft start technology
• Advanced MCU digital control system
• SCR phase control for smooth voltage ramp starting
• Optical fiber isolation communication design
• Reduced starting current and impact torque
• Built-in bypass vacuum contactor control
• Modular power unit and control structure
• Touchscreen interface with English and Chinese display
• Multiple intelligent protection functions
• Suitable for heavy-duty industrial motors

High Voltage Soft Starter Advantages

Feature	CTWV High Voltage Soft Starter
Motor Starting	Smooth voltage ramp starting with adjustable control
Starting Current	Adjustable starting current limit to reduce grid impact
Control Technology	MCU + SCR phase control + optical fiber communication
Bypass Operation	Vacuum contactor bypass after successful starting
Application	High-power industrial motors and heavy machinery

General Specifications

Specification	Details
Product Name	High-Voltage Solid-State Soft Start Device
Product Type	High Voltage Soft Starter / Motor Starting Controller
Applicable Motor	Three Phase AC Asynchronous / Synchronous Motor
Working Voltage	3kV – 11kV ±15%
Working Frequency	50Hz / 60Hz ±2Hz
Starting Current Limit	300% – 700% of Motor Rated Current (Adjustable)
Starting Mode	Voltage Ramp, Current Limit, Double Ramp
Communication	Modbus RTU RS485 / Profibus Optional
Cooling	Forced Air Cooling
Protection Class	IP30 / IP40 Cabinet Protection

Protection Functions

• Phase loss protection
• Over-current protection
• Motor overload protection
• SCR over-voltage protection
• Transformer overheat protection
• Control power fault protection
• Module fault protection
• Fast semiconductor fuse protection
• Temperature monitoring and auto cooling control
• Fault history recording function

Applications

CTWV Series High-Voltage Solid-State Soft Start Device is widely used for high-power industrial motor applications including:

• Large pumps
• Industrial fans
• Compressors
• Belt conveyors
• Ball mills
• Crushers
• Mining equipment
• Power plant equipment
• Heavy industrial machinery

The CTWV Series provides a reliable high-voltage motor starting solution by reducing electrical impact, improving system stability, and extending motor and equipment lifetime.

Contact us for product selection, technical support, and quotation.