Model Of The Soft Starter
Rated motor power
Please refer to
Meet the standards
Three phase power supply
AC 380V(optional 220V and 660V)
Squirrel cage three-phase asynchronous motor
When the motor is fully loaded, no more than 4 times per hour, no load or light load, no more than 10 times per hour.
At an altitude of 3000 below ground gas, the vibration stresses below 0.5G
93% no condensation or drop
Natural cold wind
Relative to vertical
Vertical installation, angle range
External dimensions of90kw-400kw
Please see the below table for the external and installation dimensions of WSTR3000 series 90kw-400kwsoft starter.
Rated power (KW)
Connection Diagram For Main Circuit Of WSTR 3000 Soft Starter
Terminal Configuration Diagrams
Terminal diagram of the main circuit
1)WSTR3005-3075 WSTR 3090-3400
2)Terminal diagram of the control circuit
3)Terminal connection of the control circuit
Why Choose Us
WSTRD series Motor Starter has a Chinese & English LCD display to real-time display current, voltage and other operating status. The help information can be assessed when the soft starter is not in the soft start/ soft stop status or the setting status; press Yes(button for confirmation), then press the up/down buttons to read the prompt messages.
Four-digit voltmeter, used to test the voltage of the three phase AC power
Indicate the specification of the soft starter
Indicate that the latest fault information is zero
Indicates no occurred fault information
Indicates the occurred fault information Err0r06
indicates no fault information
Indicates the software version of the product is Ver4. 2
The total times of successful starting
Time used in last soft start(whether succeed or not)
Note: HI-H9 saves the recent 9 fault information in the recursive method
Connection Of The Main Circuit And The Grounding Terminal
(I) Main circuit power input terminal (R,S, T)
a.Connect the main circuit input terminals R, S, T to the three-phase AC power through the circuit breaker for circuit protection or circuit breaker with leakage protection without considering the connection sequence
b.Do not use ON/OFF of the main circuit power to control running and stop of the soft starter, instead, such should be controlled by means of the control terminal or RUN and STOP buttons in the keyboard panel of the soft starter upon power on.
c.Do not connect the soft starter to the single-phase power.
(2) Output terminals of the soft starter (U ,V ,W )
a.Output terminals of the soft starter should be connected to the three-phase motor in correct phase sequence. If the rotation direction of the motor is incorrect, switch connection of any two phases among U, V and W.
b.The output end of the soft starter shall not be connected to capacitor or surge absorber.
c.If the wire between the soft starter and the motor is very long, the distributed capacitance between the wires will generate highfrequency current which may cause over-current tripping, leakage current increasing and poor current display precision of the soft starter. Therefore, it is suggested that the motor connection wire should be no more than 50m.
(3) Grounding terminal of the soft starter (〨 G)
a.For safety and noise reducing, the grounding terminal G of the soft starter must be well-grounded. To prevent electric shock and fire accidents, the metal enclosure and frame of the electric equipment should comply with the requirements of the national electronic procedures.
1.Unique SCR trigger closed-loop control algorithm
Unique SCR closed-loop control, specially designed for standard and heavy loads. The user can select the current limit start and the voltage ramp start according to the load condition to achieve an absolutely smooth torque-free oscillation start effect.
2.Control accuracy, real-time efficiency
High-performance CORETX-M3 32-bit core CPU for center control, fast speed, high precision, strong anti-interference ability
Patented main circuit three-in and six-out structure, built-in current transformer scheme, convenient wiring and high reliability
4.Optional standard MODBUS-RTU protocol
Integrated advanced protection.It has protection functions such as input and output phase loss, overload, overcurrent, phase current imbalance, thyristor over temperature, etc., to protect the motor and related equipment in all directions.
90kw or less is a fully molded shell structure, processed with flame-retardant ABS material. The upper cover of 90KW and above is made of plastic shell structure, and the main frame is made of aluminum-zinc plate material. It has heat resistance and corrosion resistan
7.External lead panel
The panel can be externally led to the operating surface of the device for remote operation through the fuselage interface, which is convenient for on-site use.
A monitoring signal coding system consisting of a 4-digit digital display that monitors the operating conditions of system equipment 24 hours a day, while providing fast fault diagnosis
Yueqing Winston Electric Co., Ltd. is located in Wenzhou - the Electric Capital of China. We specialize in developing, manufacturing and distributing low voltage & high voltage electrical products. . The products we professionally deal with are switching power supplies, sensors, relays, voltage stabilizers, AC contactors, circuit breakers, distribution boxes, industrial plugs & sockets and others.
With special cultivation of employees, high investment on production facilities and R&D as well as a wide range of products, we advocate "technology innovation, business honesty and trust and quality first" as our basic principle, trying to develop into a world-class electrical manufacturer with constant efforts.
One years’ guarantee for free from the date of delivery . Besides, any of the spare parts can be supplied, during the guarantee period and after the guarantee period.If you have any questions, please contact our customer service.
According to the product external weight, the company has independent and suitable packaging for products.
We have customers from all of the world, and we hold exhibitions in different country.
Q: Can I order motor soft starter with my brand?
A: Yes, OEM and ODM are acceptable, let’s talk details by email.
Q: How to do when the LED always ON even already 1 hour power turn off ?
A: Please add external resistor, point P+ and P- , then try the electricity again.
Q: How about the quality of the product?
A: Accordance with international standards and we all have CE for our products.We always get good feedback from our client all over the world.
Q: How do you assure the quality?
A: Attaching great importance to quality control,we check every step to make sure items in good quality. And we all have CE for our products.
Q: How about the price of the product?
A: We are the manufacturer and we have a fairly advantaged competitive price.