China CT High Starting Torque Soft Starter, AC380/690/1140V, Suppliers & Factory for Induction Motors
Functions
- Reduce the motor starting current and the distribution capacity, and avoid capacity investment;
- Reduce the starting stress, extend the life of the motor and related equipment;
- Smooth start and soft stop avoid the surge problem and water hammer effect of traditional start-up equipment;
- A variety of start-up mode and a wide range of current, voltage and other settings can adapt to a variety of load conditions;
- Perfect and reliable protective function protects motor and related equipment in a more effective manner.
Basic Parameters
| Control voltage | AC110V - 220V ±15%, 50/60Hz |
| Mains Voltage | AC380V, AC690V, AC1140V ± 15% |
| Nominal current | 18A~1000A, 22 rated values in total |
| Applicable motor | Squirrel cage AC asynchronous motor |
| Start methods | Voltage ramp start, linear torque control start, square torque control start, stepwise frequency control start |
| Stop methods | Free stop, soft stop, pump stop, internal brake, external brake |
| Logical input | Impedance 1.8 KΩ, Mains voltage +24V |
| Start frequency | Frequent or infrequent start available, and it can be set internally |
| Protective function | Overvoltage, undervoltage, three-phase voltage imbalance, overcurrent, overload, underload, overheating, phase failure, short circuit, three-phase current imbalance, phase sequence detection, electric leakage, zero sequence detection, motor temperature protection, etc. |
| IP | IP00, IP20 |
| Cooling type | Natural cooling or forced air cooling |
| Installation type | Wall mounted |
| Environmental condition |
When sea altitude is above 2,000m, soft starter should be derated for use. Ambient temperature: -25 ~ +45°C Relative humidity: less than 95% (20°C±5°C) Free of flammable, explosive and corrosive gas or conductive dust. Indoor installation, good ventilation, vibration less than 0.5G |
Features
There are ten kinds of built-in load types for users to choose, providing a unique starting control curve for each type of load to maximize the soft start and load matching, in order to achieve the best starting and stopping effect.
It is built-in ten types of load for users to choose. It provides a unique start control curve for each type of load to make soft start match the load to a certain extent, so as to achieve a good starting and stopping effect.
Voltage ramp start, linear torque control start, square torque control start, and stepwise frequency control start. Programmable kick start torque and starting current limits can be applied in each mode. The unique basic algorithm makes the motor start and stop more accurate and smoother.
Equipped with RS485 communication interface, it is convenient for users to connect and control the network, and improve the automation level and reliability of the system. Embedded Modbus standard protocol for easy configuration and connection.
Users can input 4-20mA or 0-20mA standard signal, and conduct upper and lower limit setting of analog quantity on the operation panel to achieve the start and stop control of motor and alarm. The data (pressure, temperature, flow, etc.) can also be transmitted via a soft starter. It is provided with 4-20mA or 0-20mA standard analog signal output function.
All external control signals are subject to optoelectronic isolation, and different anti-noise levels are set to adapt to the application in special industrial environments.
The soft starter has two sets of motor control parameters with different power. Two sets of basic parameters can control two motors with different power respectively.
Self-adaption of power frequency 50/60 makes user easy to use.
Up to 15 failures can be recorded, making it easy to find the cause of the malfunction.
It detects current and load parameters, having microcomputer protective functions such as overcurrent, overload, underload, overheating, phase failure, short circuit, three-phase current imbalance, phase sequence detection, electric leakage, zero sequence detection, system abnormality and crystal oscillator abnormality.
LCD and navigative operation mode make parameter setting and adjustment more convenient, and fault and real-time monitoring more intuitive. Displays in Chinese and English.
Model Selection of CT Soft Starter
| No. | Rated current (A) | 380V | 690V | 1140V | |||
|---|---|---|---|---|---|---|---|
| Motor Power (kW) | Size | Motor Power (kW) | Size | Motor Power (kW) | Size | ||
| 1 | 18 | 7.5 | 172×320×167mm | 15 | 172×320×167mm | 22 | 172×320×167mm |
| 2 | 24 | 11 | 22 | 33 | |||
| 3 | 30 | 15 | 30 | 45 | |||
| 4 | 39 | 18.5 | 37 | 55 | |||
| 5 | 45 | 22 | 45 | 65 | |||
| 6 | 60 | 30 | 55 | 90 | |||
| 7 | 76 | 37 | 75 | 110 | |||
| 8 | 90 | 45 | 90 | 135 | |||
| 9 | 110 | 55 | 110 | 165 | |||
| 10 | 150 | 75 | 132 | 285×474×230mm | 225 | ||
| 11 | 180 | 90 | 285×474×230mm | 160 | 280 | 285×474×230mm | |
| 12 | 218 | 110 | 200 | 344 | |||
| 13 | 260 | 132 | 250 | 400 | |||
| 14 | 320 | 160 | 300 | 505 | 320×512×230mm | ||
| 15 | 370 | 185 | 350 | 584 | |||
| 16 | 440 | 220 | 320×512×230mm | 400 | 320×512×230mm | 695 | |
| 17 | 500 | 250 | 456 | 789 | |||
| 18 | 560 | 280 | 500 | 884 | 400×647×230mm | ||
| 19 | 630 | 315 | 560 | 400×647×230mm | 995 | ||
| 20 | 780 | 400 | 400×647×230mm | 700 | |||
| 21 | 920 | 470 | |||||
| 22 | 1000 | 530 | |||||
Specification and Accessories (e.g. 380V)
| Applicable motor power (kW) | Model No. | Rated current (A) | Model of bypass contactor | Size of primary wires (copper wire) |
|---|---|---|---|---|
| 7.5 | CT - 0018/3 | 18 | CJX4-25 | 4 mm2 |
| 11 | CT - 0024/3 | 24 | CJX4-32 | 6 mm2 |
| 15 | CT - 0030/3 | 30 | CJX4-32 | 10 mm2 |
| 18.5 | CT - 0039/3 | 39 | CJX4-40 | 10 mm2 |
| 22 | CT - 0045/3 | 45 | CJX4-50 | 16 mm2 |
| 30 | CT - 0060/3 | 60 | CJX4-63 | 25 mm2 |
| 37 | CT - 0076/3 | 76 | CJX4-80 | 35 mm2 |
| 45 | CT - 0090/3 | 90 | CJX4-95 | 35 mm2 |
| 55 | CT - 0110/3 | 110 | CJX4-115F | 35 mm2 |
| 75 | CT - 0150/3 | 150 | CJX4-150F | 50 mm2 |
| 90 | CT - 0180/3 | 180 | CJX4-185F | 30×3 copper bar |
| 110 | CT - 0218/3 | 218 | CJX4-225F | 30×3 copper bar |
| 132 | CT - 0260/3 | 260 | CJX4-265F | 30×4 copper bar |
| 160 | CT - 0320/3 | 320 | CJX4-330F | 30×4 copper bar |
| 185 | CT - 0370/3 | 370 | CJX4-400F | 40×4 copper bar |
| 220 | CT - 0440/3 | 440 | CJX4-500F | 40×4 copper bar |
| 250 | CT - 0500/3 | 500 | CJX4-500F | 40×4 copper bar |
| 280 | CT - 0560/3 | 560 | CJX4-630F | 40×4 copper bar |
| 315 | CT - 0630/3 | 630 | CJX4-630F | 40×5 copper bar |
| 400 | CT - 0780/3 | 780 | JWCJ 20-800 | 50×5 copper bar |
| 470 | CT - 0920/3 | 920 | JWCJ 20-1000 | 50×6 copper bar |
| 530 | CT - 1000/3 | 1000 | JWCJ 20-1000 | 50×6 copper bar |
● The standard configuration of the soft starter includes a current transformer, and the user needs to select a bypass contactor reasonably according to the specifications and models listed in the table above.
● When the main power supply is AC690V and AC1140V, the selection of accessories is also based on the current of the controller.
● The attachments in the table above are for reference only.
Basic Settings of Different Applications
| Load type | Initial voltage (%) | Start ramp time (s) | Stop ramp time (s) | Current limit ILIM |
|---|---|---|---|---|
| Ship propeller | 30 | 10 | 0 | 2.5 |
| Centrifugal fan | 50 | 20 | 0 | 3.5 |
| Centrifugal pump | 30 | 6 | 6 | 3 |
| Piston compressor | 40 | 15 | 0 | 3 |
| Lifting machinery | 30 | 15 | 6 | 3.5 |
| Mixer | 40 | 15 | 0 | 3.5 |
| Crusher | 50 | 15 | 6 | 3.5 |
| Screw compressor | 40 | 15 | 0 | 3.5 |
| Spiral conveyor belt | 40 | 10 | 6 | 3.5 |
| Idling motor | 25 | 10 | 0 | 2.5 |
| Belt conveyor | 50 | 15 | 10 | 3.5 |
| Heat pump | 30 | 15 | 6 | 3 |
| Elevator | 30 | 10 | 0 | 3 |
| Gas pump | 30 | 10 | 0 | 2.5 |
Frequently Asked Questions (FAQ)
The CT Soft Starter reduces motor starting current and distribution capacity to avoid extra capacity investment. It also reduces starting stress, extends equipment life, avoids water hammer effects, and provides comprehensive protection for motors.
It supports multiple start methods including voltage ramp start, linear torque control start, square torque control start, and stepwise frequency control start. Stop methods include free stop, soft stop, pump stop, internal brake, and external brake.
Yes, it features a dual parameter function, containing two sets of motor control parameters with different powers. This allows it to control two motors with different power configurations respectively.
The standard configuration includes a current transformer, but the user must select and purchase the appropriate bypass contactor separately based on the recommended model selection table.
It requires indoor installation with good ventilation, an ambient temperature between -25°C and +45°C, relative humidity under 95%, and vibration levels under 0.5G. It must be kept free of flammable, explosive, or corrosive gases.
When installed at a sea altitude above 2,000 meters, the soft starter's capacity must be derated for safe and proper usage.