Littelfuse FPS Series - Manual (Page 2)

Protection Relays & Controls
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/fps
Feeder Protection–Advanced
PHASE
VOLTAGES
FPS-CTU
CONTROL UNIT
RELAY
OUTPUTS
I/0 MODULE
DIGITAL
INPUTS
4-20 mA
ANALOG
INPUT
+
ANALOG
OUTPUT
4-20 mA +
39 40
53 52
43 51
......
5 16
......
1 2
60 56 20 17
......
33 22
CONTROL
POWER
RS-485
35 37
......
30 29 27 26 23 22
PHASE CURRENT
TRANFORMERS
GROUND-FAULT
CURRENT
TRANSFORMER
OPERATOR INTERFACE
FPS-OPI
(recommended) (required)
(recommended)
RTD MODULE
MPS-RTD
(optional)
Wiring Diagram
A B
C
1
2
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 or 60 Hz
Inputs Phase current, Earth-leakage current, Phase voltage,
7 digital, 1 analog
Output Contacts 5 contacts — See Product Manual
Approvals CSA certified, C-Tick ( Australian )
Communications Allen-Bradley ® DFI and Modbus ® RTU (Standard);
DeviceNet™, Profibus ® , Ethernet (Optional)
Conformal Coating Standard feature
Warranty 10 years
Mounting:
Control Unit Surface
Operator Interface Panel, Control-Unit mounted
Overload (49, 51)
Phase reverse (current) (46)
Overfrequency (81)
Overcurrent (50, 51)
Underfrequency (81)
Ground fault (50G/N, 51G/N)
Unbalance (voltage) (47)
RTD temperature (38, 49) Unbalance (current) (46)
Phase loss (voltage) (47)
Overvoltage (59)
Phase loss (current) (46)
Undervoltage (27)
Phase reverse (voltage) (47)
Power factor (55)
Features & Benefits
FEAtuRES IEEE # bEnEFItS
Overload 49, 51 Long-time overcurrent provides thermal protection for feeder or load
Inverse-time overcurrent 50, 51 Coordination using IEEE and IEC Curves
Definite-time overcurrent 50, 51 Instantaneous overcurrent to detect catastrophic failure
Current unbalance/
Phase loss/Phase reverse
46 Detects an open or high-impedance phase
Ground fault 50G/N, 51G/N Inverse and definite time. Early insulation-failure detection.
RTD temperature 38, 49 Optional protection (MPS-RTD module) for load-temperature monitoring
Overvoltage 59 Limits stress to insulation
Undervoltage 27 Detects a damaging brown-out condition
Voltage unbalance 47 Detects unhealthy supply voltage
Two setting groups Minimizes Arc-Flash hazards during maintenance
Breaker control Allows local and remote operation; reduces component count
Metering Displays the measured and calculated parameters
Data logging On-board 64-event recorder helps with system diagnosis
Communications Remotely view measured values, event records, & reset trips
Conformal coating Internal circuits are conformally coated to protect against corrosion and moisture
FPS SERIES
Feeder Protection System
Rev: 4-A-050213
Based on Manual Rev 0