Voltage protection relay MPU-32 series

currentthree-phasemotor

The MPU-32 series Motor Protection Unit is used to provide current and temperature-based protection, metering, and data-logging for three-phase, low-voltage, medium-horsepower induction motors. This relay is ideal for retrofitting and upgrading obsolete or aging motor protection using existing CTs. The MPU-32 can be programmed using the front-panel operator interface, the TIA-232 port, or an optional communications network. See the PMA Family of Panel Mount Adapter Kits to replace common obsolete relays. Motor Protection Unit • Three ac-current inputs • Earth-leakage-CT input • Programmable digital input • 24 V dc source for digital input • Programmable 4–20-mA analog output • Onboard temperature-sensor input • 100-Ω-Platinum RTD or PTC • Three programmable output relays • Local RS-232 communications, optional network communications • PC-interface software (SE-Comm-RIS) • 4 line x 20 character backlit LCD display • Keypad for programming and display selection • 4 LEDs; 1 user programmable Current Input Module (MPU-CIM) The MPU-CIM Current Input Module is the interface between the MPU-32 relay and the 5-A-secondary, 1-A-secondary, and sensitive current transformers. The MPU-CIM is ordered separately from the MPU-32 and can be surface- or DIN-rail mounted. Wire-clamping terminals are standard, but the MPUCTI is available for those requiring ring-tongue terminals.