Global Organization
As capacitor switching is associated with high inrush current, the Contactors are provided with damping resistors which limit the value of inrush current to a safe value. C&S Electric offers Capacitor Duty Contactor designed for capacitor switching applications. It enhances equipment life and optimizes solution cost.
Contactors for Capacitor Switching(UA 16 to UA 110) Maximum permissible peak current Î< 100 times the nominal rms current of the switched capacitor. A... and AF... Standard Contactors(A 12 to A 300 and AF 50 to AF 750) Maximum permissible peak current Î < 30 times the nominal rms current of the switched capacitor. Contactors for Capacitor Switching
Application The A...and AF...contactors are suited for capacitor bank switching for the peak current and power values in the table below. The capacitors must be discharged (maximum residual voltage at terminals < 50 V)before being re-energized when the contactors are making.
Capacitor Switching Contactors for use with reactive or non-reactive capacitor banks Rated Operational Power at 50/60Hz Aux. Type Ambient Temperature Contacts 50°C 60°C Built-in Add. Coil voltage 1) 380V415V 660V 380V 415V 660V 230220-240V 50Hz 400V440V 690V 400V 440V 690V Pack Weight
Use K3-..K contactors with pre-charge resistors for switching capacitors that do not have a series reactor (filter, tuning, detuning, etc.). The pre-charge resistors will reduce transients associated with typical capacitor switching and extend capacitor life. FRAKO Type K contactors are rated for a specific range of capacitive current (or kVAR).
FRAKO capacitor switching contactors are designed for long life, yet they are compact and have low power losses. When switched capacitors do not include series connected reactors, it is very important to use contactors with pre-charge resistors.
ABB offers 3 contactor versions according to the value of the inrush current peak and the power of the capacitor bank. UA..RA Contactors for Capacitor Switching (UA 16..RA to UA 110..RA) …
C&S ''s range of capacitor duty Contactors is specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the Contactors are …
C&S ''s range of capacitor duty Contactors is specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the Contactors are provided with damping resistors which limit the …
The capacitor switching contactors have resistors connected in series with the capacitors that are switched before the closing of the contacts and are promptly removed post the circuit is energised. Though, this seems a …
WEG''s special CWMC contactors series for switching of capacitors is designed according to IEC 60947-1 and UL, and provides the best solution for the switching of power factor
Capacitor switching application leads to very high current peak at capacitor energization. UA..RA contactors are designed with damping resistor to handle current peaks without limitation. Product benefits. Widest contactor range on …
These special contactors offer several advantages for capacitor switching applications that include series connected reactors: Safe switching (ON and OFF) of reactor/capacitor steps
The capacitors are precharged during pick-up via early-make contacts and integrated pre …
This feature is referred to as leading transition contact with pre-charge or pre-insertion resistor and offers these advantages: Signifi cant damping of inrush current Suppression of voltage …
Therefore, contactor for capacitor bank switching must be designed to withstand: • Permanent current that can reach 1.5 time the nominal current of capacitor bank. • Short but high peak …
ABB offers 3 contactor versions according to the value of the inrush current peak and the …
1 Capacitor Switching Contactors Types K3-..A.. and K3-..K.. Ideal for Power Factor and Harmonic Filter Systems Features that matter Patented design with significant damping of …
Elsewedy SK Capacitor Contactors. Capacitor switching application leads to very high current peak at capacitor energization. SA contactors are designed with damping resistor to handle …
Specification:Specification: Contactors K3-..K are suitable for s witching low-inductive and low loss capacitors in capacitor banks (IEC70 and 831, VDE 0560) without and with reactors. …
Specification: Contactors K3-..K are suitable for switching low-inductive and low loss capacitors …
Contactors for Capacitor Switching Switching of power factor correction capacitors WEG''s special CWMC contactors line for capacitor switching is designed according to IEC …
Capacitor switching application leads to very high current peak at capacitor energization. UA..RA contactors are designed with damping resistor to handle current peaks without limitation. …
Reerencesf 5 TeSys contactors For switching 3-phase capacitor banks, used for power factor correction, Direct connection without choke inductors Special contactors Special contactors …
Capacitors with series reactors (for tuning or detuning) have lower peak inrush current than systems that do not include reactors. For these applications, FRAKO offers contactors with special wear-resistant contact material which enables …
The capacitors are precharged during pick-up via early-make contacts and integrated pre-charge resistors before the main contacts close. This combination may be used for switching of …
The UA.. contactors have been specially developed for the switching of capacitor banks whose …
These special contactors offer several advantages for capacitor switching applications that …
Capacitors with series reactors (for tuning or detuning) have lower peak inrush current than systems that do not include reactors. For these applications, FRAKO offers contactors with …
The UA.. contactors have been specially developed for the switching of capacitor banks whose inrush current peaks are less than or equal to 100 times nominal rms current. The table below …
Contactors for Switching of CWMC Capacitors Switching of Power Factor Correction Capacitors WEG''s special CWMC contactors series for switching of capacitors is designed according to …
FRAKO capacitor switching contactors are designed for long life, yet they are compact and have low power losses. Capacitors that include series connected reactors, do not require pre …
Specification: Contactors K3-..K are suitable for switching low-inductive and low loss capacitors in capacitor banks (IEC70 and 831, VDE 0560) without and with reactors. Capacitor switching …