Gold Member Since 2014
Audited Supplier
Big Pawer Electrical Technology Xiangyang Inc. Co., Ltd.

Synchronous Motor, Soft Starter, VFD manufacturer / supplier in China, offering Sfc Synchronous Frequency Converting Soft Starting Device, Mv Ydq Series Liquid Resistor Rotor Soft Starter, Htr Series High Voltage Thermal Resistor Soft Starter and so on.

(/ )

Supplier Homepage Product Variable-Frequency Drive Sfc Synchronous Frequency Converting Soft Starting Device

Sfc Synchronous Frequency Converting Soft Starting Device

FOB Price: US $553,846-2,215,385 / Piece
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $553,846-2,215,385/ Piece
Get Latest Price
Production Capacity: 500 Sets Per Year
Transport Package: Sea Freight Wooden Package
Payment Terms: L/C, T/T, Paypal, Money Gram, Western Union

Request a custom order and have something just for you!

Send Customized Request
Product Catalog
Variable Frequency Drive
4 Products
Product Image
Product Name
FOB Price
Payment Terms
Product Package
Product Attribute
Product Table
Basic Info
  • Model NO.: SFC
  • Output Type: Triple
  • Main Circuit Type: Current
  • Link of Transformation: AC-DC-AC Variable-Frequency Drive
  • Function: Constant Torque Universal Type
  • Cabinets Dimensions: See Following Table
  • Trademark: Big Pawer
  • Origin: China Mainland, Hubei
  • Application: High-performance Transducer, Three Phase Transducer, General Transducer, High Frequency Converter Transducer
  • Principle of Work: PLC Control
  • Voltage of Power Supply: Medium Voltage Variable-Frequency Drive
  • Nature of DC Power: Current Variable-Frequency Drive
  • Brand: Big Pawer
  • Cabinets Color: Computer Grey(Customize Available)
  • Specification: CE, ISO9001, ISO14001, OHSAS 18000
  • HS Code: 8504409990
Product Description
SFC Synchronous Frequency Converting Soft Starting Device
1.General Information
2.Working principle and technical features 
3.Structure parameters(boundary dimensions and weight)
4.Installation manual
5.Commissioning manual
6.Operation manual
7.Common fault
9.Transport and storage
10.Open package inspection
11.Contact us
1. General Information

 1.1 Main application range
SFC synchronous frequency converting soft starting device is applicable for large or medium high voltage synchronous electrical motor, to adjust the frequency and soft start the motor. The adjustment performance is as good as DC motor. Rotational speed is precisely controllable during the starting process. It fully meets the requiements of smooth starting. The structure is simple without mechanical commutator and spark therefore easy to maintain. With large capacity, high rotational speed, high voltage, the thyristors series-parellel connection can be realized more reliably and four-quadrant operation can be realized more conveniently.
SFC synchronous frequency converting soft starting device is applicable for soft starting of motors rated voltage 6kV or 10kV and power range 5,000kW~50,000kW.(for larger power motor customized solution applicable).
 1.2 Product features
1.2.1 DC reactance design, filter function; in short out case current mutation in the        inverter side will be avoided.            
1.2.2 12 pulse rectification technology used, 2 cuicuits used in power units, significantly        reduce current harmonics in power grid input side.
1.2.3 Use DC impuls technology in low speed situation, periodly reduce the current to 0        to realize the inverting commutation.
1.2.4 Use automatic load induced potential commutation in high speed inversion.
1.2.5 Consecutive starting applicable, high repeat accuracy.
1.2.6 Starting capacity less than 1/3 rated capacity.
1.2.7 Motor speed variation range from 0(static) to rated speed.
1.2.8 Frequency device uses static components, easy to maintain, high reliability,        convenient settings, installation and lay out.
1.2.9 Starting with static frequency inverter can keep the starting current under the        rated current of synchronous motor, no impact to the power grid, soft starting        function.
1.2.10 Static frequency inverter has no special structure requirement to the motors, can         be equipped in several motor sets and meet the demand of consecutiv starting.
1.3 Type explanation & selection
Sfc Synchronous Frequency Converting Soft Starting Device
 3.Technical and performance parameters 
Use standardQ/XDLXXX-2013
Installation LocationIndoor
Motor RequirementsHigh-voltage AC synchronous motor
Excitation requirementsAC brushless excitation
DC brush excitation
Control PowerAC220V 
Starting time0-200S Can be set
The output voltage0- rated motor voltage
Output CurrentLess than 40% of motor rated current
Cooling methodForced air heat light +
Load TypeBF fans, centrifugal fans, compressors, pumps, turbines, etc.
4.System solutions and principles 

(1)   Main circuit diagram,12 pulse double loop

(2)SFC Block Diagram

(3)SFC Control signal graph


  • Compact design and highest power density
  • Easy plant integration due to compact design and highly flexible configuration
  • Simple operator control with the userfriendly operator panel AOP30
  • High reliability and ruggedness through the use of extremely robust thyristor technology and fuseless design, combined with an intelligent response to external disturbances
  • Hasslefree integration into higher-level automation systems through analog and digital interfaces and PROFIBUS DP

Send your message to this supplier
Mr. Wang Jing
To: Mr. Wang Jing

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now