Specially Designed For Damping Of Inrush Current In LV PFC (Low-voltage Power Factor Correction) Systems.
When a capacitor is switched to an AC voltage, the result is a resonant circuit damped to a greater or lesser degree. Capacitor contactors with damping resistors make use of pre-switching auxiliary contacts. They close before the main contacts and pre-load the capacitor thus avoiding current peak values. This influences positively the life expectancy of the capacitor significantly in addition to the positive impact of power quality (avoiding transients and voltage sags that otherwise may be caused by switching in capacitors).
Applications
- Damping of inrush current in low-voltage PFC systems
- For PFC systems with and without reactors
Features
- Excellent damping of inrush current and improved power quality
- Longer useful service life of main contacts of the capacitor contactor
- Soft switching of capacitor and thus longer useful service life and enhanced mean life expectancy of the PFC system
- Leading contacts with wiper function
- Tamper-proof and protected resistors
- Easy access for cable connection
- Voltage range: 400….690 V
- Output range: 12.5 … 100 kvar
Technical
*Prices on request
