MPU-32 Motor Protection Unit
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MPS-RTD 8-Input RTD Module
MPS-DIF Differential Module
Functions:
- Current and temperature protection for three-phase induction motors
- Meters and logs current, current unbalance, thermal capacity, earth leakage, and temperature
Features:
- Eleven protective functions to extend the life of three-phase motors and reduce down time
- Reduced Overcurrent setting can decrease flash hazard during maintenance
- Eighty-character backlit display
- Compact size for ease of installation and for retrofit applications
- Standard TIA-232 interface with Modbus RTU
- Optional TIA-485 with Modbus RTU and Allen-Bradley DF1, DeviceNet, or Ethernet communications
- Free SE-Comm-RIS PC-interface software
- Single temperature-sensor input and optional 8-input MPS-RTD modules
- Universal power supply
- Three programmable output relays; programmable analog output; programmable digital input
- Optional phase-differential protection with MPS-DIF module
- Conformally coated circuit boards
- Replacement for MPU-16A
- Lifetime warranty
Typical Applications:
- Processing, manufacturing, petroleum, chemical, mining, forestry, water and waste treatment facilities, etc.
- 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 MPU-CTI-RT-00 Current Transformer Input Module. MPS-RTD modules can be added to monitor up to 24 additional temperature sensors. An MPS-DIF Differential Module and CT's can be added for differential protection.
IEEE Device Numbers:
37, 38, 46, 49, 50, 50G, 50N, 51, 51G, 51N, 66, 74, 86
Serial Connector Adapter Kit
Allows connection of RJ45 socket to PC 9-pin serial connector (TIA-232). Includes 1.5m cable.
8-Input RTD Module
Eight programmable inputs connect Pt100, Ni100, Ni120, and Cu10 RTD's to the MPS or MPU-32. Certified for use in Class I, Zone 2 hazardous locations.
Drawing (MPS-M Fig. 2.4)
Surface-Mount Kit
Used for MPU-32 or FPU-32 surface-mount applications.
Current Transformer Input Module
Interface between MPU-32 or FPU-32 and 5-A-secondary, 1-A-secondary, and sensitive current transformers. Ring-tongue terminals.
Current Transformer Input Module
Port-Powered Serial Converter
Converts a TIA-485 signal from an MPS, MPU-32, or FPU-32 to a TIA-232 signal for a computer or PLC.
Differential Module
Adds differential protection to the MPS and MPU-32. Compatible with 3-CT core balance and 6-CT summation connections.
Watertight Cover
Allows relays to be used in a wet environment. NEMA 4 rating. Shown mounted on the MPU-16A.
Current Input Module
Interface between MPU-32 or FPU-32 and 5-A-secondary, 1-A-secondary, and sensitive current transformers.
Industrial TIA-232/TIA-485 Converter
Converts a TIA-485 signal from an MPS, MPU-32, or FPU-32 to a TIA-232 signal for a computer or PLC. Industrial network quality.
Voltage Clamp
Protects the EFCT input on the SE-701, SE-703, MPU-32, and FPU-32 when a current transformer other than the EFCT-1, EFCT-2, or EFCT-26 is used.
Technical Information
Current Transformer
Current transformer used to detect phase or ground-fault current.
CAD Drawing
Earth-Fault Current Transformer
Sensitive current transformer used to detect ground-fault current. Flux conditioner not required.
EFCT Flux Conditioner
Helps prevent saturation when installed in the EFCT-1 window.
EFCT Flux Conditioner
Dimensions: EFCT-1FC has a 70-mm (2.75") ID window.
Used with: EFCT-1
Used with: EFCT-1
Current Sensor
Current sensor used to detect ground-fault current.
Current Sensor
Current sensor used to detect ground-fault current.
Current Transformer
Current transformer used to detect phase or ground-fault current.
Earth-Fault Current Transformer
Sensitive current transformer used to detect ground-fault current. EFCT-1FC flux conditioner available.
Earth-Fault Current Transformer
Sensitive current transformer used to detect ground-fault current. Flux conditioner included.
Earth-Fault Current Transformer
Current Sensor
Current sensor used to detect ground-fault current.