ABB Motor Surge protection Units - MSP0 pages

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.