Motor Control Board Electrical Distribution Box 15~45kW Water Pump Fan Reduced Voltage 380V~415V

Star-delta Starter Motor Control Board for 15~45kW Water Pump or Fan Start at Reduced Voltage 380V~415V 3 Phase

Most induction motors are started directly on line, but when very large motors are started that way, they cause a disturbance of voltage on the supply lines due to large starting current surges.

To limit the starting current surge, large induction motors are started at reduced voltage and then have full supply voltage reconnected when they run up to near rotated speed.

Working Principle of Star-Delta Starter

This is the reduced voltage starting method. Voltage reduction during star-delta starting is achieved by physically reconfiguring the motor windings as illustrated in the figure below. During starting the motor windings are connected in star configuration and this reduces the voltage across each winding 3. This also reduces the torque by a factor of three.

Scheme – Working Principle of Star-Delta Starter

After a period of time the winding are reconfigured as delta and the motor runs normally. Star/Delta starters are probably the most common reduced voltage starters. They are used in an attempt to reduce the start current applied to the motor during start as a means of reducing the disturbances and interference on the electrical supply.

The Star/Delta starter is manufactured from three contactors, a timer and a thermal overload. The contactors are smaller than the single contactor used in a Direct on Line starter as they are controlling winding currents only. The currents through the winding are 1/root 3 (58%) of the current in the line.

There are two contactors that are close during run, often referred to as the main contractor and the delta contactor. These are AC3 rated at 58% of the current rating of the motor. The third contactor is the star contactor and that only carries star current while the motor is connected in star.

The current in star is one third of the current in delta, so this contactor can be AC3 rated at one third (33%) of the motor rating.

We provide star-delta starter control board integrating Chint l low-voltage components below, with normal range from 15kW, 18.5kW, 22kW, 30kW, 37kW to 45kW at rate voltage AC380V/50Hz.

15kW Star-delta Starter

18.5kW Star-delta Starter

22kW Star-delta Starter

30kW Star-delta Starter

37kW Star-delta Starter

45kW Star-delta Starter

Wuxi Fenigal Science and Technology Co. ,Ltd. is a high-tech enterprise specialized in reseach and developement of products on latest Electrical Distribution and Industrial Control & Automation, as well as special Lighting technology and products on Film & Media, Event, Industrial and Domestic use etc.  

Through years of effort, we are aiming to build a large range of lineup coverage and service capability for the sectors we serve. We promise to provide our clients best products with most reasonable prices in most cases of no M.O.Q. (Minimum Order Quantity) requirement. Our team work with from raw materials, parts, elements, design and developement, engineering to purchase, assembly, test, logistics, deliver and after sales service, in short, to earn the client's satisfaction and create customer values.

Each year, we export many special products to panel builders, system integrators, event planners and event management companies, project owners, engineers or their teamsin many corners of the world.

Working together with us, you can find blow benefits.

Our Advantages

1) We are manufacturer and have factory facility for many of our unique products

2) Integrating flexible resources that could enable our fast response to client's demand on regular or customized 

3) No M.O.Q. and very low M.O.Q.

4) Leatime period is short 1-3 days or 5-7 days normally, special order or bulk order to be negotiated

5) Private label or OEM business is provided

6) We have plenty of channels that enbles us to supply world best brands of authnentic materials originally made in China, quicker and efficient than anyone else.

7) We are able to deliver to you through international courier service by Air, like FedEx, DHL, TNT, UPS etc. to most parts of the world very soon in best condition. (Bulk order is still suggested to be delivered by Sea)

8) Our in-depth expertise and know-how of the industries and product knowledge stored in our mind and team work.

OUR MISSION

To be a powerful company and efficient supplier of first class electrical distribution and control and featured lighting products and solutions.

OUR VISION

To be a first class and trustworthy supplier in both civil and industrial market like commercials, event, green building, 

Electrical Division

Not only do we manufacture a good range of electrical products like lighting distribution boxes & enclosures, circuit protection, electrical control and automation products, but also have we established solid partnership with OEM factories located in Shanghai, Zhejiang, Jiangsu, Guangdong provinces which enable us to provide from element to products and project solution.  

Our electrical division covers below core product sectors - distribution boxes & enclosure system, circuit protection devices, automatic transfer switches, industrial electrical control elements like contactors, relays, sensors, switches, fuses. We are also supplying lineup from Schneider Electric, ABB, SIEMENS, LS etc. made in China, as well as top famous Chinese national electrical brands. 

Lighting Division

Over 90% of lighting products are tailored products for our clients. We are the best manufacturer for unique balloon lighting products inn China.

We mainly serve for 4 big market segment - Film & Media, Event, Industrial and Safety and Domestic featured. 

Our lighting products concerns with LED, HID and Tungsten Halogen, from components, parts, electricals, control to ready-made products.

Our lighting division covers below core product sectors - cinematography lighting, studio lighting, photography lighting, safety lighting, industrial general purpose lighting, special industrial lighting, event lighting, stage lighting, architectural, landscape, indoor, outdoor.

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