ABB Motor Surge protection Units - MSP
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MSP Motor Surge Protection for critical industrial loads The MSP is a Surge Protection suitable for voltages between 2.4 kV and 24 kV for critical industrial loads such as large motors and generators, dry-type transformers, medium-voltage switchgear and motor control centers. Electrical distribution systems are subject to power surges, switching transients, faults and lightning strikes at anytime. Such occurrrences can be damaging to electrical systems as well as various apparatus used in a manufacturing process. ABB offers MSP, a protective device that provides protection against insulation failure for motors, rotating machines, and dry-type transformers. This yields assurance of continuous operation of the equipment, the electrical system and the manufacturing process. The primary function of the type MSP motor surge protector is to guard the winding insulation of the device being protected. Station class, metal oxide lightning arresters act to limit the maximum voltage to the device to a predetermined magnitude. Specially designed surge capacitors, connected in parallel with the arresters, control the rate of rise of the resultant overvoltage. The combination of surge arresters and surge capacitors serve to limit the turn-to-turn insulation stress impressed on the device being protected. Standard features − − Rugged-welded 11-gauge metal enclosure − − ANSI #61 light gray paint (RAL 7035) − − Heavy-duty rated surge capacitors − − Station class MOV surge capacitors − − Copper bus bars −− Common ground connections − − Hinged, padlockable front door − − Removable cable entry plates for top or bottom feed − − Outdoor NEMA 3R enclosure Option − − RC surge suppressor capacitor − − Pressure switch with contact − − Fuse protection with contact (bigger enclosure) Components ABB type 2GUS surge capacitors provide high transient overvoltage withstand, low operating losses, and long life. Complete with porcelain bushings, these all-film units utilize Faradol 810, a non-PCB, completely biodegradable dielectric fluid. Internal discharge resistors provide a five minute discharge time after de-energization. The standard operating temperature range is -50°C to +60°C. ABB type XPS polymer station class metal oxide surge arresters are supplied as standard. Internal cable connections include phase leads tied to isolated buswork fixed on porcelain insulators. Pre-punched bus bars provide for simplified external connections and integrity of the insultation system. Grounding of the MSP motor surge protector is made to the device being protected. The MSP motor surge protector is completely factory assembled and tested, ready for installation and service.

Selector guide and diagram To select the type MSP motor surge protector equipment for your application, follow these steps: 1. Determine the line-to-line voltage of the system. 2. Determine the system grounding - delta, grounded, or ungrounded neutral. 3. Select required ABB Style Number that matches #1 and #2. iVoltage L-L iA or Ungr. Y System iGrd.Y System iArrester kV rms jArrester MCOV Capacitor # of poles ||JF Pole j Enclosure Depth Elementary diagram USER INCOMING 2 Selector guide and diagram | MSP Brochure

Dimensions: three-phase capacitor enclosure Dimensions are specified in inches (mm). FLOOR WITH 9 x 38 REMOVABLE COVER PLATE FOR USER INCOMING CABLE ENTRANCE COPPER GROUND STANDARD NEMA 2 HOLE CABLE CONNECTION Front view Right side view Dimensions: 3x single-phase capacitor enclosure Dimensions are specified in inches (mm). COPPER GROUND STANDARD NEMA Front view Right side view FLOOR WITH 9 x 38 REMOVABLE COVER PLATE FOR USER INCOMING CABLE ENTRANCE

ABB Inc. 500 rue du Binome Quebec, QC G1P 4P1, CANADA Phone: +1 418 650 7629 www.abb.com/powercapacitors ABB is working to continuously improve the products. Therefore we reserve the right to change design, dimensions and data without prior notice. This document may not be considered as contractual document. For more information please contact: