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 of 90kw-400kw
Please see the below table for the external and installation dimensions of WSTR3000 series 90kw-400kwsoft starter.
Rated power (KW)
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
WSTR 3000 series soft starter possesses complete protection functions to protect the operation security of the soft starter and the motor. Here is Motor thermal protection tripping time curve based on IEC60947-4-2 standard is shown as follows:
MODBUS Communication Protocol
Through the inbuilt RS485 standard interface, WSTR 3000 series soft starter can connect with PC and PLC and other hosts to conduct serial communication. The command of the host can control running or stop of the soft starter, monitor the running status of the soft starter and modify its functional data.
1.Input of stop running command.
2.Monitoring of the running status
3.Real-time tracking (tabular display of the running information)
4.Read-once, write-once and saving to files of function codes. Please consult our company separately for the communication software.
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.
● Established in 2010 ,Winston Electric Co.,LTD, is a professional manufacturer and exporter that is concerned with the design, development and production of Inverter, Motor soft Starter, Speed Control, Transformer,Circult Breaker,etc. We are located in Wenzhou City Zhejiang Province, with convenient transportation access. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world. Our well-equipped facilities and excellent quality control throughout all stages of production enables us to guarantee total customer satisfaction. Besides, we have received ISO9001,TUV and CE. As are suit of our high quality products and outstanding customer service.
● 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.
● We can provide customized service we are a customer oriented manufacturer our products can be customized.
● We are an ISO9001:2000 certified company. We have obtained many certificates, such as CCC, CE, CB, GS and RoHS. Stability, expertise and technological innovation are the core stones of our business strategy. Aiming at reliable product quality and the highest customer satisfaction, we are consistently deepening enterprise inner reform and fully carry out a quality guarantee system.
● We have customers from all of the world, and we hold exhibitions in different country.
Q: What is your product warranty?
A: All of the power supply Winston Manufacture with 12 month warranty
Q: Could you offer Form A or C/O ?
A: It is totally no problem. We can prepare relative documents to foreign affairs office or other office to apply for this certificate
Q: Where is your market?
A: 1.Our products are popular in Europe, Indonesia,Russia, Australia, Italy, America, Mexico and so on.
2.Some of them are our regular customers and some of them are developing. We hope you can join us and make mutually beneficial from our cooperation.
Q: Could Winston provide technology support?
A: We're in this field more than 10 years. If there's any problem, please contact with us,we'll provide suggestion from our engineer to help you solve problem.
Q: Does Winston keeps goods in stock or only trading?
A: We have large warehouse for goods. Keep lots of goods in warehouse, so could promise fast delivery.