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40Amps 3-POLE 63KW Capacitor Switching Contactor (For power factor correction)
Model: CJ19-95
For capacitor switching contactor are designed for switching 3-phase, single or multiple-step capacitor banks (up to 6 steps). Over 6 steps, it is recommanded to use chokes in order to limit the inrush current and thus improve the lifetime of the installation. The contactors are conform to standards IEC60070 and IEC60831.
Contactors fitted with a block of early make poles and damping resistors, limiting the value of the current on closing to 60 In max.
This current limitation increases the life of all the components of the installation, in particular that of the fuses and capacitors.
The patented design of the add-on block ensures safety and long life of the installation.
Operating conditions
there is no need to use choke inductors for either single or multiple-step capacitor banks. Short-circuit protection must be provided by gl type fuses rated at 1.7~2In.
, 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.
- 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. Example: if electrical life of normal contactor is 100,000times in max load, electrical life of capacitor switching contactor is 200,000times.
- 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.
- Capacitor Switching 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 Capacitor Switching 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.
- While the capacitor switching 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.
- Rated Current.............................................................40A
- Control Capacity.........................................................63KW
- No. of Pole...................................................................3-POLE
- Rated Operational Voltage.........................................380V AC
- Rated Insulated Voltage.............................................690V AC
- Frequency....................................................................50/60Hz
- Standards................................................................... IEC60947-4-1; IEC60070; IEC60831
- IP / NEMA Rating.........................................................IP20
- Connection..................................................................Screw + Cable Lug
- Installation...................................................................DIN Rail / Screw mounted
- Working Temperature................................................-20℃ ~ +80℃
- Mechanical Life.......................................................... 20,000times
- Sample Service...........................................................Pay to Provide
- Quality Assurance......................................................24 months
- Item Condition.............................................................Brand-New
| 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.
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