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China Suppliers High Starting Torque Soft Starter AC 380/690/1140V Factory for Squirrel Cage Motors
Functions
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Reduce the motor starting current and the distribution capacity, and avoid capacity investment;
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Reduce the starting stress, extend the life of the motor and related equipment;
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Smooth start and soft stop avoid the surge problem and water hammer effect of traditional start-up equipment;
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A variety of start-up mode and a wide range of current, voltage and other settings can adapt to a variety of load conditions;
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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
● Unique load application parameters
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.
● Unique load application parameters
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.
● Multiple start and stopping modes
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.
● Advanced communication function
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.
● Analog signal control
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.
● Powerful anti-interference property
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.
● Dual parameter function
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
Self-adaption of power frequency 50/60 makes user easy to use.
● Dynamic fault memory
Up to 15 failures can be recorded, making it easy to find the cause of the malfunction.
● Perfect protective function
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.
● Friendly human-machine interface
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 |
Important Notes:
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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.
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When the main power supply is AC690V and AC1140V, the selection of accessories is also based on the current of the controller.
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The attachments in the table above are for reference only.
Basic Settings of Different Applications
(following settings are for reference only)
| 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)
Q
What are the available start and stop methods for the CT Soft Starter?
The CT Soft Starter 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.
Q
Do I need to purchase a bypass contactor separately?
Yes. While the standard configuration of the soft starter includes a built-in current transformer, the bypass contactor is not built-in. Users must select a suitable bypass contactor model (such as CJX4 series or JWCJ series) based on the motor power and rated current specs.
Q
What protective features does the soft starter provide?
It features comprehensive microcomputer protection, including overvoltage, undervoltage, three-phase voltage/current imbalance, overcurrent, overload, underload, overheating, phase failure, short circuit, phase sequence detection, electric leakage, zero sequence detection, and motor temperature protection.
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Can the CT Soft Starter be used at high altitudes above 2000 meters?
Yes, the soft starter can be installed at altitudes exceeding 2,000 meters, but it must be derated for safe and efficient operation according to the environmental guidelines.
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Does it support integration into automated industrial networks?
Yes. The CT Soft Starter is equipped with an RS485 communication interface and has an embedded Modbus standard protocol, making it easy to configure, control, and monitor remotely within automated systems.