CT Series High-Torque Motor Starter – Adjustable Voltage System for AC380V/690V/1140V Motors

Category: Low Voltage Soft Starter

Description

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

● 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
No.	Rated current（A）	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	400×647×230mm
20	780	400	400×647×230mm	700	400×647×230mm
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

(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