Load Equipment Protection Capacitor
Condition 2 System surge voltages.
Load equipment protection capacitor. Circuit and Load Protection products protect solenoids relay coils pilot devices PLC outputs and more. The fuse must clear the fault quickly to prevent any of the equipment from failing violently. This protection is provided to trip the capacitor bank in case of overloading due to over voltage or harmonic current.
During fault conditions the voltage across the capacitor may be raised up to 15 times more than its rated value. Is this viable - and if so what size Cap. The capacitors are only energized when then motor is running see Fig5.
They may be installed at various load centers or directly at the terminals of 2300 and 4000 volt motors. I am not too worried about load dump as there is little else to shed. Because components are connected in-line series-connected filters must be sized to handle the entire connected load.
The load side of a motor overload protective device. They are DIN Rail mountable for quick installation and excellent for high-density configurations. Capacitor module designed for local correction of individual loads such as single motors starters or control gear incorporating an integral circuit breaker for independent isolation and overload protection.
Anyway on the practical side protection method should be more of concern for AC input SSR which are connected to the AC line. This method of installation commonly referred to as at the load or motor switched When the capacitors are installed directly at the induction motor terminals on the secondary of the overload relay the capacitors are turned on and off with the motors eliminating the need for separate switching devices or over current protection. The plotter draws maximum 13 watts at minimum operating volatge of 108 V.
GEs High Voltage WeatherTight HWT capacitor banks are suitable for use on primary circuits where small amounts of kVAR are required. Because of this the use of-series capacitors is confined in the extra high voltage system only. For capacitor bank the following protections are recommended.
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