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18KW Capacitor Switching Contactor

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US$ 6.74 - 6.85 MOQ: 1 Piece
Key Specifications
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Place of Origin:
Zhejiang, China
Brand Name:
YOMIN
Model Number:
CJ19-25
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Yueqing Yomin Electric Co., Ltd.
Payment & Shipping
Payment Methods:
Port of Shipment:
Ningbo or Shanghai
Delivery Detail:
Delivery time depends on order quantity.

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Place of Origin Zhejiang, China
Brand Name YOMIN
Model Number CJ19-25
Electricity Type AC
Number of Pole 3
Phase Other, Single-phase or Three-phase
Main Circuit Rating Voltage Other, 24V, 36V, 110V, 220V, 380V, 415V

12Amps 18KW Capacitor Switching Contactor

Model: CJ19-25

 

 

 

Product Description

 

Reversing Contactors (Magnetic Contactor) provide remote control of primarily electric motors and compensation & heating systems by cable. They protect the instruments and equipments against overload currents by using thermal relays, for capacitor switching contactor. While switching on a capacitive circuit, a high frequency (1...15Hz) and large transient current peaks are produced. Switching of capacitor for a single or one of the capacitor banks are different from each other. Step by step "switching on" operation is more difficult for contactor than capacitor bank. Because during this operation for capacitor bank, compensated current occurs. For this reason selecting of suitable contactors the compensating current must be take into consideration for 50kVAR and above, and for less than 50kVAR can be omitted.

 

 

 

Product Overview

 

  • As it is known, when the capacitor starts to operate, they cause a high frequency between 1~15kHz. And a current that is 180time higher than rated current for very short time period. Shock inductance is to be fixed to each phase to limit this current. But practically this type of operation is difficult. That's why capacitor switching contactors are used and for this reason the life-time of contactors increase 100% in comparision with normal contactor.

 

  • While Switching on a capacitive circuit, a high frequency (1...15kHz) and large transient current Peaks are produced. Switching of capacitor for a single or one of the capacitor banks are different from each other. Step by step "switching on" operation is more difficult for contactor than capacitor bank. Because during this operation for capacitor bank, compensated current occurs. For this reason selecting of a suitable contactors the compensating current must be take into consideration for 50kVAr and above, and for less than 50kVAr can be ommitted.
 
  • Operating Principle: When coil of contactor is energized, first contact of passing block is closed, starting current of contactor is passed through this contact, approximately after 3-5 ms contacts of passing blocks are opened and rated current of contactor is carried on main contacts.

 

 

Feature

 

  • Magnetic Contactor should have the high current value without being exposed to and damaged or boiling. This belongs to the quality of contactor. (Contact surface quality and weld technology) Especially at AC-3 and capacitor command, selectivity of contactor is very important.
  •  
  • Current which passes through the contacts causes warming when the contactor is closed. This warming is limited with the standards. For IEC60947-4-1 when continual thermal current (Ith) is passed though the main contacts, maximum increasing temperature should not exceed 65k.
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  • While the contactor is cutting the current, electrical arc occurs between the seperated contacts. Arc is the result of the thermal impression of electron and ion current which broke off the contact material. Temperature of the arc reaches to thousands of degrees and this temperature is too high for metals and insulators which are used at contact making and cutting cells. Therefore, arc should end as soon as possible. For this reason separators are used inside of contactors.

 

 

 

Specifications

18KW Capacitor Switching Contactor

 

 

  • Rated Current.............................................................12A
  • Control Capacity.........................................................18KW
  • No. of Pole...................................................................3-POLE
  • Rated Operational Voltage.........................................690V AC
  • Rated Insulated Voltage.............................................690V AC
  • Frequency....................................................................50/60Hz
  • Standards................................................................... IEC60947-4-1
  • IP / NEMA Rating.........................................................IP20
  • Connection..................................................................Screw + Cable Lug
  • Working Temperature................................................-20℃ ~ +80℃
  • Mechanical Life.......................................................... 20,000times
  • Sample Service...........................................................Pay to Provide
  • Quality Assurance......................................................24 months
  • Item Condition.............................................................Brand-New
 
 

 

Selection Form

 

Item Control Capacity Rated Current Case Qty.
Model (KW) (A) (Pcs.)
CJ19-25 18 12 40
CJ19-32 23 18 32
CJ19-43 29 20 32
CJ19-63 43 30 20
CJ19-95 63 40 20

 

NB: Please mention the coil voltage when ordering. Our standard coil voltages are 24V, 36V, 110V, 220V, 380V, 415V, other else upon request.

 

 

 

Dimension

18KW Capacitor Switching Contactor

 

 
Company Information

18KW Capacitor Switching Contactor18KW Capacitor Switching Contactor18KW Capacitor Switching Contactor18KW Capacitor Switching Contactor18KW Capacitor Switching Contactor18KW Capacitor Switching Contactor 

 

 

 

 

 


  

 

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Yueqing Yomin Electric Co., Ltd.
Business Type
Manufacturer, Trading Company
Year Established
2012
Factory Size
50,000-100,000 square meters
Total Employees
501 - 1000 People
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