EATON FP-5000 microprocessor base panel mounted multifunctional protection relay

EATON FP-5000 microprocessor base panel mounted multifunctional protection relay

Product basic positioning and core features

Core positioning: microprocessor based panel mounted protective relay, designed for ANSI and IEC application scenarios, suitable for main power supply, contact line or feeder protection of medium voltage distribution circuits (up to 69kV). A single device can cover the comprehensive protection requirements of three-phase circuits;

Target users: System engineers, operators, and troubleshooting personnel, providing full process guidance from equipment configuration, operation, to fault analysis;

Compliance certification: Complies with ANSI/IEEE C37.90, IEC 255-3, UL/CUL 1053 and other standards, passes CE, CB, AK certification, electromagnetic compatibility meets EN 61000 series requirements, RoHS compliance;

Core advantages: Multi functional integration (protection/monitoring/control/metering), multi curve adaptation, wide temperature operation (-40~60 ℃), support for remote communication and programming, rich logging and fault analysis capabilities.

Hardware parameters and physical characteristics

（1） Key hardware specifications

Category specific parameters

Measurement of input current: 4-channel CT input (5A for FP5000-00 and 1A for FP5100-00), maximum steady-state 2Inom, instantaneous 80-100Inom (1 second); Voltage: 4-channel VT input (0-120VAC line to ground, 0-144VAC overload)

Switching I/O input: 8 passive optical isolation contacts（ 40Vdc@2mA ）； Output: 7-way relay (2 Form C+5 Form A), contact capacity 30A (0.25 seconds), 5A (continuous)

Local communication interface: RS-232 (DB9); Remote: INCOM FSK, supports MODBUS RTU/IMPACC protocol, baud rate 9600-38400bps

Standard power configuration: 100-120VAC/48-125VDC; Wide width version: 100-240VAC/100-250VDC, interruption tolerance time 83ms-300ms

Memory and backup non-volatile Flash memory, 3V VL2330 rechargeable lithium battery (backup RTC and event logs, backup for 3 months at 25 ℃)

Physical dimensions panel: 165.1 × 254mm (width × height), opening: 174 × 78mm, depth: 177.8mm; weight: shell 2.27kg, pull unit 2.63kg

Protection level panel IP52, shell IP20, vibration/impact resistance meets industrial standards

（2） Display and operation interface

Display module: 4-line x 20 character vacuum fluorescent screen, supports sleep mode (black screen after 15 minutes without operation, wake-up prompt after 5 minutes);

Operation buttons: 15 film buttons (including reset, monitoring, setting, logging, status control and other function buttons), 6 navigation buttons (up and down/up and down/confirm/return);

Status LED: 11 indicator lights (running, circuit breaker opening and closing, phase/ground/other tripping, alarm, pickup, auxiliary, setting/testing mode).

Detailed explanation of core functions

（1） Protection function system

overcurrent protection

Phase overcurrent: 2-level instantaneous overcurrent (50P-1/50P-2), time limited overcurrent (51P), voltage constrained time limited overcurrent (51P2), supporting forward/reverse/bidirectional direction monitoring;

Grounding overcurrent: Independently measure grounding (50X/51X) and residual grounding (50R/51R), each containing 2 levels of instantaneous and 1 level of time limited overcurrent. 50X supports 3 custom curves;

Curve types: 10 standard curves (thermal curve: It/I2t/I4t/Flat; ANSI curve: MOD/VERY/XTRM; IEC curve: IECA/IECB/IECC), with optional instantaneous/delayed/calculated reset modes.

Other protective functions

Voltage protection: Main/auxiliary power undervoltage (27M/27A), overvoltage (59M/59A), neutral line overvoltage (59N), supports triggering of any phase/two-phase/three-phase;

Frequency protection: under frequency (81U), over frequency (81O), threshold 45-65Hz, accuracy ± 0.02Hz;

Unbalance protection: current imbalance (46), voltage imbalance (47), based on the ratio of negative sequence/positive sequence components (2-40%);

Special protection: Circuit breaker failure protection (50BF, supports internal/external/dual triggering), synchronous inspection (25, monitors voltage difference/angle difference/slip), regional interlocking (87B, supports phase/ground/bidirectional interlocking), cold load switching (avoids closing shock).

（2） Monitoring and metering functions

Basic monitoring: three-phase phase/line voltage, three-phase current/zero sequence current, active/reactive/apparent power, power factor (apparent/displacement), system frequency (45-65Hz);

Power quality: 2-15th harmonic components, total harmonic distortion (THD), voltage/current imbalance;

Statistical analysis: current/power demand (fixed/sliding window, 1-60 minutes), extreme value recording (maximum/minimum value+timestamp), energy metering (positive and negative active kWh, four quadrant reactive kVar);

Data freezing: Supports timed (month/day/hour), instantaneous (communication command), and scheduled (time zone/time period switching) freezing, with a maximum of 12 records.

（3） Logging and recording function

Log type records capacity core content

16 trip logs (cyclic coverage) including trip cause, fault type, electrical parameters at fault time, setting group, waveform index

100 event logs (with a timestamp of 1ms) for protection functions such as picking up/returning, changes in contact input/output status, modification of set values, and communication events

The historical log permanently stores the operating hours, power on times, tripping times, circuit breaker operation times, and cumulative breaking current

256 cycle waveform recording (16 events x 16 cycles) of voltage/current waveforms before and after faults, supporting pre triggering (1-15 cycles), with optional triggering modes of trip/communication/manual

（4） Control and programming functions

Control mode: local (panel opening and closing button), remote (communication command/contact input), opening and closing requires confirmation within 10 seconds, supports circuit breaker status feedback (5a/56a contacts);

Set group management: up to 4 protection set groups, support local/communication switching activation groups, and set values will not be lost in case of power failure;

Programmable logic: 6 logic gates, 6 timers, 2 logic latches, supporting contact input/protection function/logic output linkage, customizable protection logic;

Security mechanism: 4-digit alphanumeric password protection, the setting mode requires unlocking the security door to prevent unauthorized modification.

Programming and Configuration Process

（1） Programming method

Local programming: Enter the setting mode through the "Set" button on the front panel, enter the password (default 0000), and navigate to configure system parameters, protection parameters, I/O configuration, etc;

Software programming: Connect PowerPort software through RS-232 interface or PowerNet software through INCOM interface, supporting setting value download/upload, firmware upgrade, and log export;

Quick configuration: Provides default settings, typical applications only need to configure system frequency, CT/VT ratio, wiring method, overcurrent pickup value, and curve type.

（2） Key setting parameters

System configuration: frequency (50/60Hz), phase sequence (ABC/ACB), CT/VT wiring method, CT/VT ratio, VT secondary rated voltage (50-250V);

Protection parameters: overcurrent pickup value (0.1-20pu), time limit multiplier (0.05-10.0), delay time (0-9999 cycles), direction setting, imbalance threshold (2-40%);

I/O configuration: Customized 8-way contact input (circuit breaker status/remote control/fault trigger, etc.), 7-way contact output linkage (trip/alarm/control, etc.).

Installation and wiring specifications

Installation requirements: Pull out installation, panel thickness of 1.5-6mm, hole size of 174 × 78mm, mandatory grounding to suppress electromagnetic interference;

Wiring method:

Current circuit: three-phase four wire 3CT, three-phase three wire 3CT/2CT, CT secondary side connection section 10-14AWG;

Voltage circuit: VT supports star (line to ground) or triangle (line to line) connections, with a secondary side connection cross-section of 14-20AWG;

Control circuit: Power terminals TB101 (positive/fire), TB102 (negative/zero), and the opening and closing coils are connected through output relays;

Typical wiring: The document provides four typical wiring diagrams (star connection/star+synchronous check/open triangle/open triangle+synchronous check), supporting residual grounding instead of zero sequence CT.

Key points of testing and maintenance

Test mode: Enter through the "Test" button, supporting fault simulation, output relay testing, area interlock testing, battery testing, and LED flashing prompts during the testing process;

Maintenance project:

Battery maintenance: The 3V lithium battery (DL2032) needs to be replaced when the power is turned on, and the capacity should be checked regularly by pressing the battery test button;

Self check function: The device automatically performs hardware (processor/RAM/PROM/analog circuit) and software self checks when powered on, and displays warning messages in case of faults;

Log maintenance: Regularly export trip/event logs, analyze fault trends, and perform maintenance when the number of circuit breaker operations reaches the set threshold;

Troubleshooting: The document provides a troubleshooting process for common faults (communication failure, false tripping, no display, relay failure), and supports locating the cause of the fault through waveform recording.