75 Hp Soft Start

75 Hp Soft Start

New Model AC Motor Medium Voltage Soft Starter 75HP With Lacking Phase Protection
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Product Details

Model Of The Soft Starter

1


Data-sheet

Soft starter
230V/400V/660V-50/60Hz

Rated motor power

Model
appearance

Soft Starter
Model

Working Max
Allowable current

220V

380V

660V

Please refer to
The following page

WSTR3007

15

4KW

7.5KW

11KW

R1

WSTR3011

23

5.5KW

11KW

15KW

WSTR3015

31

7.5KW

15KW

22KW

WSTR3018

38

9KW

18.5KW

30KW

WSTR3022

44

11KW

22KW

37KW

WSTR3030

60

15KW

30KW

45KW

WSTR3037

74

18.5KW

37KW

55KW

WSTR3045

100

22KW

45KW

75KW

WSTR3055

110

30KW

55KW

90KW

WSTR3075

150

37KW

75KW

115KW


Basic Functions

1


External Dimensions

External dimensions of 5.5kw-75kw

Please see the below table for the external and installation dimensions of WS1R3000 series 5.5kw-75kw soft starter.

2


Model

Rated power (KW)

Rated current(A)

External dimensions

Installation dimensions

Net weight
(kg)

H1

W1

D

H2

W2

d

WSTR 3005

5.5

11

310

155

175

296

127

M6

5

WSTR 3007

7.5

15

310

155

176

296

127

M6

5

WSTR 3011

11

22

310

155

176

296

127

M6

5

WSTR 3013

15

30

310

155

176

296

127

M6

5

WSTR 3018

18.5

37

310

155

176

296

127

M6

5

WSTR 3022

22

43

310

155

176

296

127

M6

5

WSTR 3030

30

60

310

155

176

296

127

M6

5

WSTR 3037

37

75

310

155

176

296

127

M6

5

WSTR 3045

45

90

310

155

176

296

127

M6

5

WSTR 3055

55

110

310

155

176

296

127

M6

5

WSTR 3075

75

150

310

155

176

296

127

M6

5


Terminal Configuration Diagrams

Terminal diagram of the main circuit

1) WSTR3005-3075WSTR 3090-3400


2)Terminal diagram of the control circuit

3)Terminal connection of the control circuit


Why Choose Us

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:

1


MODBUS Communication Protocol

Modbus is a kind of serial asynchronous communication protocol with RS485 as the physical interface. Being designed for Modicon PLC, it has the structural features of PLC. In network control, it can read and write the PRS 3000 as if it were a PLC. It can project the start and stop control, status information (current, fault etc.) and function parameters to the holding register (4:XXX). Its read and write control shall be conducted through the PL master station. When connected to other Modbus equipment, connection should be conducted as per the diagram below:

2


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. 

3


Current Limiting Starting Mode 

a)The soft starter will be under current starting mode when code F9 is set to O (current limiting). Figure shows the current change wave of the motor under the current limiting mode. 11 is the set starting current limiting value, when the motor starts, the output voltage will increase rapidly until the current of the motor reaches the set current limiting value 11, and the current of the motor will be kept under such value, then with the increasing of the output voltage, the motor will speed up gradually, and when the motor reaches the rated rotation speed, the bypass contact will close, the output current will drop rapidly to the rated current IE of the motor or less, and the whole starting process completes. 

b)When the load of the motor is relatively light or the set current limiting value is relatively high, it will be normal that the maximum current may not reach the set current limiting value. Generally, current limiting starting mode applies to the occasions where there're strict limiting requirements on starting current.

4


About Us

● Yueqing Winston is a known brand, a leading manufacturer and exporter for off-grid which has been this industry for 10 years. Our factory was established in 2010. We provide power solution service to our clients. All of our customers are located all over the world and they are very satisfied due to our excellent price-quality ratio.

17

● We have 3 senior engineers in our R&D dept, we design and produce all kinds of voltage transformers regulators, stabilizers rector on the basis of our customers’ specific requirements. 

14

● There is no perfect individual, only perfect team! Our company often organizes activities to enhance the cohesion and teamwork spirit of the company and further promote the corporate culture

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● 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.


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● We will arrange the goods packaging, choose the transport routes in a fast and economical mode;Monitor all goods circulation, track and ensure the quality of transportation; provide fast, safe logistics channels.

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FAQ

Q: If I have a question I would like advice on how to contact you ?

A: You can send e-mail to consult us,and we will reply you in detail within 24 hours. Whatsapp, skype,wechat all ok.

Q: How to choose a right soft starter?

A: According to your requirement (like power, voltage and load), our sales will give you suitable suggestions. 

Q: Can the inverter connect with computer, PLC?

A: Yes. All inverters have built-in RS485 port .and support Modbus communication protocol. It’s OK for inverter to connect with computer and PLC. we have software engineer. can program the software for the special function.

Q: What is your terms of packing?

A: Generally, we pack our goods in neutral boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Q: What is your terms of payment?

A: For small order, we require 100% payment in advance. For big order, we can also accept T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.


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