MPU-32

MPU-32 LITTELFUSE | Alldatasheet

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Protection Relays & Controls © 2014 Littelfuse Protection Relays & Controls Littelfuse.com/mpu-32 Motor Protection–Advanced MPU-32 SERIES (PGR-6200) Motor Protection Unit

Description

The MPU-32 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. See the PMA Family of Panel Mount Adapter Kits to replace common obsolete relays. Motor Protection Unit g Three ac-current inputs g Earth-leakage-CT input g Programmable digital input g 24-Vdc source for digital input g Programmable 4-20-mA analog output g On-board temperature-sensor input, g 100-Ω-Platinum RTD or PTC g Three programmable output relays g Local RS-232 communications, optional Network Communications g PC-interface software (SE-Comm-RIS) g 4 line x 20 character backlit LCD display g Keypad for programming and display selection g 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 MPU- CTI is available for those who require ring-tongue terminals. ORDERING NUMBER COMMUNICATION MPU-32-00-00 TIA-232 MPU-32-01-00 TIA-232 & TIA-485 MPU-32-02-00 TIA-232 & DeviceNet™ MPU-32-04-00 TIA-232 & EtherNet/IP™ & Modbus® TCP NOTE: One of the following is required: MPU-CIM-00-00 Current Input Module, or MPU-CTI-RT-00 Current Input Module with ring-tonque terminals.

Ordering Information

Simplified Circuit Diagram PHASE CT PHASE CT GF CTPHASE CT MPU-CIM MPS-RTD RTD x 8 MPU-32 M (Current Input Module) (Motor Protection Relay) PHASE CT PHASE CT GF CTPHASE CT MPS-CTUL1 M MPS-RTD MPS-OPI RTD x 8 (Control Unit) (Temperature Input Module) (Temperature Input Module) (Operator Interface) D Phase Current T ransformers Phase CTs are required to detect phase currents. For upgrade applications, existing CTs can be used. Ground-Fault Current T ransformer Optional zero-sequence current transformer detects ground-fault current. Available with 5-A and 30-A primary ratings for low-level pickup. MPS-RTD T emperature Input Module Optional module provides 8 inputs to connect Pt100, Ni100, Ni120, and Cu10 RTDs. MPS-DIF Differential Current Module Optional motor differential protection, compatible with core balance and summation current transformer connections. B C Accessories A B C A Rev: 4-B-091514 Based on Manual Rev 5-A-090514

Protection Relays & Controls © 2014 Littelfuse Protection Relays & Controls Littelfuse.com/mpu-32 Motor Protection–Advanced FEATURES IEEE # BENEFITS Overload 49, 51 Extends motor life and prevents insulation failures and fires Dynamic thermal model Provides protection through starting, running, and cooling cycles Communications Remotely view measured values and event records, reset trips, and access setpoints Ground fault 50G/N, 51G/N Prevents catastrophic failures and fires Current unbalance/ Phase loss/Phase reverse 46 Prevents overheating due to unbalanced phases RTD temperature 38, 49 RTD temperature protection (MPS-RTD module) for high-ambient or loss-of-ventilation protection Phase loss/Phase reverse (current) 46 Detects unhealthy supply conditions Overcurrent 50, 51 Prevents catastrophic failures and fires; extends motor life Jam Prevents motor damage by detecting mechanical jams or excessive loading Undercurrent 37 Detects low level or no-load conditions PTC overtemperature 49 Overtemperature (PTC) protection for high-ambient or loss-of-ventilation detection Starts per hour 66 Limits the motor starts per hour to prevent overheating Differential 87 Optional MPS-DIF module for sensitive winding-fault protection Reduced overcurrent mode Minimizes arc-flash hazards during maintenance Metering View measured and calculated parameters with on-board display MPU-CIM Separate current input module to reduce risk of open-CT hazard and for convenient installation Analog output Provides means for metering selectable parameters Data logging On-board 100-event recorder for data logging Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture Features & Benefits Wiring Diagram Specifications Protective Functions (IEEE Device Numbers) Input Voltage 65-265 Vac, 25 VA; 80-275 Vdc, 25 W Power-Up Time 800 ms at 120 Vac Ride-Through Time 100 ms minimum 24-Vdc Source 100 mA maximum AC Measurements True RMS and DFT, Peak, 16 samples/cycle, and positive and negative sequence of fundamental Frequency 50, 60 Hz or ASD Output Contacts Three Form C programmables Communications TIA-232 (standard); TIA-485, DeviceNet™, Ethernet (optional) Analog Output 4-20 mA, programmable Conformally Coated Standard feature Warranty 10 years Mounting (Control Unit) Panel (standard) Surface (with MPU-32-SMK converter kit) (Current Input Module) DIN, Surface Approvals CSA certified, CE (European Union) , UL Recognized, C-Tick (Australian) Overload (49, 51) Phase reverse (current) (46) Overcurrent (50, 51) Jam Ground fault (50G/N, 51G/N) PTC overtemperature (49 RTD temperature (38, 49) Unbalance (current) (46) Starts per hour (66) Differential (87) Phase loss (current) (46) Undercurrent (37) 12 11 10 9 8 7 6 5 4 3 2 1 13 14 15 16 17 18 19 26 25 21 22 23 24 27 31 PHASE CURRENT TRANSFORMERS GROUND-FAULT CURRENT TRANSFORMER (recommended)(required) MPS-RTD (optional) INPUT MODULE MPU-32 MOTOR PROTECTION UNIT TEMPERATURE INPUT 4-20 mA ANALOG OUTPUT CIM I/0 MODULE RELA Y 2 RELA Y 3 RELA Y 1 CONTROL POWER DIG IN CURRENT INPUT MODULE MPU-CIM MPS-DIF DIFFERENTIAL MODULE (optional) A B C D MPU-32 SERIES (PGR-6200) Motor Protection Unit Rev: 4-B-091514 Based on Manual Rev 5-A-090514