Feeder Protection Relay
FPU-32 Series
- Compact size
- Integrated protection, metering, and data-logging functions
- Maintenance mode setting to reduce the risk of arc flash hazards
Description
The Littelfuse FPU-32 Feeder Protection Unit provides integrated protection, metering, and data-logging functions. It is an excellent choice for retrofitting and upgrading older relays because of its compact size and ability to use existing CTs. This feeder protection is used to protect distribution feeders in processing, manufacturing, petroleum, chemical, and wastewater treatment facilities.
We are the exclusive NSW supplier of Littelfuse protection relays and controls for the protection, safe control and distribution of electrical power in industrial applications.
IEC and IEEE overcurrent protection curves
Definite and inverse time settings for system coordination; prevents catastrophic failures.
Two setpoint groups
Create distinctive settings for maintenance or for two different loads.
Reduced overcurrent mode
Maintenance mode setting to reduce the risk of arc flash hazards.
Data logging
On-board 100-event recorder and remote data logging helps with system diagnostics.
Overload
Thermal protection for connected load.
Phase loss/Phase reverse (current)
Detects unhealthy supply conditions.
Unbalance (current)
Prevents overheating due to unbalanced phases.
Communications
Remotely view measured values, event records and reset trips.
Data sheets and Manuals
FPU-32 Data SheetFPU-32 ManualSE-Comm-RIS v4.2 SoftwareSE-FLASH v2.1FPU-32 DeviceNet ManualMPU-32 and FPU-32 Modbus TCP ManualMPU-32 and FPU-32 TIA 485 ManualTN MA-21 PMA-21 ABB Racif Adapter
Protective Functions (IEEE Device Numbers)
Overload (49, 51), Phase sequence (46), Unbalance (46), Phase loss (46), Definite-time overcurrent (50, 51), Inverse-time overcurrent (50, 51), Earth fault (50G/N, 51G/N), RTD/PTC temperature (49)
Input Voltage
65-265 Vac, 30 VA; 80-275 Vdc, 25 W
Power-Up Time
800 ms at 120 vac
Ride-Through Time
100 ms minimum
24-Vdc Source
400 mA maximum
AC Measurements
True RMS and DFT, Peak 32 samples/cycle and positive and negative sequence of fundamental
Frequency
50, 60 Hz
Output Contacts
Three Form C
Approvals
C-Tick
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)
Mounting (Current Input Module)
DIN, Surface
