AC10KV Medium Voltage Solid State Electric Motor Soft Starter Torque Control For Asynchronous Motor

AC10KV Medium Voltage 400KW Solid Squirrel-Cage Asynchronous Motor Thyristor Soft Starter by torque control is a high voltage motor soft starter designed with up-to date concept,and mainly applicable to the control of and protection for the starting and stopping of squirrel-cage type asynchronous ans synchronous motors.The starter is composed of several thyristors in series-parallel,and it can meet different current and voltage requirements.
The product is widely used in electric industry with rated voltage 3000 to 10000V,building materials chemical industry,metallurgy,steel and paper-making industries etc.,and can perform well if used together with various kinds of electromechanical devices including water pumps,fans,compressors,crashers,agitators and conveyer belt etc.,It is the ideal device for starting and protecting high voltage motors.

Technical Indicators

Features

1. Free of maintenance:Thyristor is an electric device without contacts. Different from other kinds of products that need frequent maintenance on liquid and parts etc., it turns the mechanical lift into the service life of electronic components, so it needs no maintenance after running for many years.

2. Easy installation and operation:NKS300 is a complete system for controlling and protecting the starting of motor. It can put into operation only with the power line and motor line connected. The whole system can be tested electrically under low voltage before operating with high voltage.

3. Backup:The starter comes equipped with a vacuum contactor which can be used to start the motor directly in the inside. If NKS300 fails, the vacuum contactor can be used to start the motor directly to ensure the continuity of the production.

4. High voltage thyristor is a component of major loop, equipped with voltage balancing protection system and over-voltage protection system.

5. NKS300 comes equipped with an electromagnetic blocking device for fear of entering the high voltage device in the electrified state.

6. Advanced optical fiber transmission technique realizes the triggering detection of high voltage thyristor and the isolation between LV control loops.

7, 32-bit ARM-core microcontroller is used to perform central control which is real-time and high efficient with , high reliability and excellent stability.

8. LCD/touch screen display system in both Chinese and English with human-friendly operation interface.

9. RS-485 communication port can be used to communicate with the upper computer or centralized control center.

10. Aging experiments are made on all circuit boards.

Catalogue

Connection Diagram

NKS300 series products are designed to be free of maintenance. Like other electric equipments, this equipment should be regularly checked for fear of dust pollution, damp and environmental pollution resulted from industrial production. Serious pollution may result in high voltage discharge and affect the heat dissipation of SCR's cooler.
1 Fault analysis
When a fault occurs, the corresponding fault information will be displayed on LCD touch screen. The motor should be restarted after the fault is cleared. If the fault still can not be cleared using correct operating method and program processing, please contact the manufacturer.
2 Fault code
The soft starter has multiple protective functions. When the protective functions act, the soft starter will stop immediately and the current fault information will be displayed on LCD screen, touch screen and panel. Users can analyze and clear faults according to fault information.

3 Fault history.
This starter can at most record the recent 15 faults information for users.
4 Troubleshooting
As fault has memory, after fault is cleared, you can reset fault through pressing button "STOP" for above 4 seconds, external fault clearance input terminal (D1 or D2 multifunction input) or cutting off AC220V control power to restore the starter to the state of ready to start.
5 Maintenance
The working field should be regularly cleaned to reduce dust in ambient environment.The low and high voltage bins of NKS300 series high voltage soft starter should be regularly cleaned. It is necessary to use a brush or blower to remove dust inside bin (period less than 20 days)
It is also important to clean thyristor valve block. A blower with big power can be used to clean the valve block by blowing from up to down. Clean the field after blowing the thyristor valve block (period less than 6 months)
To ensure the normal operation, NKS300 series high voltage soft starter should be regularly dehumidified if the working field is wet. (Period is depended on the circumstance)
Considering that there is shake in working field when the soft starter is started, the secondary control wiring of NKS300 series high voltage soft starter should be regularly checked to examine whether the connecting terminal is loose. If yes, tighten the loose connecting terminal. (3 months as a period)

Packaging

Noker Electric is an automation & drive focused global company, providing global customers with control, display, drive and system solutions & other related products and services, under the support of its excellent electrical and electronic technology as well as strong control technical force.

Noker Electric a technocrat who have rich experience of more than 15 years in R&D, manufacturing and marketing of power electrical products, which are widely used in the fields of in packing, printing, textiles, plastic injection, elevator, machine tool, robot,wood cutting, stone carving, ceramic, glass, paper making industry, crane, fan & pump, new energy resources etc..

Main products:

Electric motor soft starter

Built-in bypass motor soft starter

Solid state soft starter

Vector frequency inverter

Thyristor assembly

Solid state relay

AC servo motor and drive

Programmable logic controller

Electric power meter

Pressure temperature transmitter

Digital temperature controller

Water pump controller

Metal clad and metal enclosed switchgear

Noker Electric contains R&D department, products manufacturing workshop, HV workshop, exhibition room, testing laboratory, quality control department, general office, sales departments, information office and etc, now we have more than 200 employees. We have obtained the ISO9001 quality system certification and all products strictly conform to the international IEC or Chinese state standards.

From the date of order placing, we usually need 5-8 working days to manufacturing. Located in Xi'an City, the provincial capital of China, Noker Electric also can provide OEM service according your customized. We are sincerely looking forward to cooperate with you from all the countries of the whole world. 

In order to provide more complete service and product for our customers internationally, meeting our customers expectations in the respect of time of delivery, solution support, after sales services and product customization support, Noker Electric has been searching for capable companies as our business partners, product agents and distributors, bringing good product quality and professional service to our clients globally. The superior quality and low cost of Noker Electric’s product are benefited from the mature and complete manufacturing system and the efficient logistic of China. Our talented and sufficient manpower, our rich engineering experiences, drives our product to be more complete and better in the respect of functions and performances.

Noker Electric, your professional electrical partner !