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MPU-32 Motor Protection Unit |
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Friday, 01 September 2006 |
The MPU-32 is a microprocessor-based motor protection unit that uses dynamic thermal modeling
to continuously track a motor’s used thermal capacity through starting, running, overload and
cooling cycles. Overload, overcurrent, undercurrent, current-unbalance, phase-reverse, phaseloss,
and earth-fault protection are provided. Stator- and bearing-temperature detectors can be
used to provide overtemperature protection. Stator temperature can be used to compensate the
thermal model in the event of ventilation loss or high ambient temperature. The MPU-32 is compact
in size to increase mounting options, making it ideal for new and retrofit applications. The operator
interface, comprised of a four-line illuminated display, four LED’s, and seven push-buttons, is used
to observe metered data, to retrieve stored information, to reset trips and for programming. A
TIA-232 interface allows access with a personal computer. Optional network communications
provide an interface for a distributed control system.
|  Typical Applications:
All processing, manufacturing, petroleum, chemical, mining, forestry, water and waste treatment facilities, etc. The MPU-32 is an excellent choice for retrofitting and upgrading applications using existing CT's.
System Components:
The MPU-32 uses phase CT's and an earth-fault CT. Applications using 5-A-secondary CT's require an MPU-CIM Current Input Module (or ICT-2 module for MPU-16A upgrades.) Remote MPS-RTD modules can be added to monitor up to 24 additional temperature sensors.
IEEE Device Numbers:
37, 38, 46, 49, 50, 50G, 50N, 51, 51G, 51N, 74, 86 | |
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Last Updated ( Friday, 01 September 2006 )
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Applications 
Provides current and temperature 
