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Powell Capacitor Banks Standard and Optional Components ...

Powell Capacitor Banks Standard and Optional Components ...

Powell Capacitor Banks Standard and Optional Components

Powell Capacitor Banks Standard and Optional Components Powell Electrical Mfg. Co. 8967 Pleasantwood Avenue NW North Canton, OH 44720-4761 (330) 966-1750 - p (330) 966-1787 - f Standard Components Powell provides the following items as standard components on all PemVar Capacitor Banks. Power Capacitors Powell utilizes single-phase, with single or double bushing power capacitors of welded stainless steel construction with non-PCB dielectric fluid and internal discharge resistors. The capacitors are mounted directly behind hinged access doors for complete visual inspection. The capacitor mounting frame allow individual capacitors to be removed easily, without disturbing adjacent units. Capacitor Fuses The capacitors are individually protected by non-expulsion, capacitor-rated, current limiting fuses with blown fuse pop-up indicators. The individual capacitor fuses are firmly mounted directly to the top of the capaciotr bushings. Vacuum Switching Devices The banks utilize 3-Pole, electrically-operated vacuum devices reated for capacitor switching duty. The vacuum switching devices are located behind access panels for easy inspection or removal. Alternative switching devices can be supplied. Note: Maximum symmetrical short circuit current must be known. Current limiting fuses may be necessary to protect the vacuum devices from short circuit currents in excess of 6kA. Group Fuses Optional group fuses are the currentlimiting, non-expulsion, non-disconnecting type which can provide overall short circuit protection for the entire capacitor bank. Located behind hinged access doors of the incoming section, optional group fuses serve as a means of isolating the entire bank. Inrush Current Limiting Inductors When required, inrush limiting inductors are provided to limit high frequency inrush currents resulting from energization of a capacitor bank in close electrical proximity to other banks. Main Bus Used in multiple step banks to feed the individual enclosure modules from teh incoming line section, the main bus is uninsulated, full round-edge, electrical-grade aluminum or copper bar with support insulators. ©2003 Powell Electrical Manufacturing Company • All rights reserved.

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