EATON FP-5000 protective relay

Advanced measurement and monitoring capabilities

FP-5000 is not only a protective device, but also a high-precision power monitoring instrument.

3.1 Electrical parameter measurement

True RMS measurement: Sample the current and voltage of each phase at 32 points per cycle and calculate the true RMS of the 15th harmonic.

Power and Electric Energy: Measure three-phase active power, reactive power, apparent power, and power factor (apparent/displacement), cumulative electric energy (kWh, kvarh, kVAh), and support forward/reverse/net electric energy measurement.

Demand statistics: Fixed or sliding windows can be set for 1-60 minutes to record the demand values and peak demand for current and power.

Extreme value recording: Automatically record the maximum and minimum values of each electrical parameter and their occurrence time.

3.2 Power Quality Analysis

Harmonic monitoring: Calculate the harmonic occupancy rate and total distortion (THD) of voltage and current from the 2nd to the 31st order.

Phasor diagram: Real time display of the amplitude and phase angle of each phase current and voltage, facilitating on-site phase verification.

3.3 Event and waveform recording

Event Log (SOE): It can record up to 100 events with a 1ms timestamp, including protection element start/return, input/output status changes, constant value changes, etc.

Trip log: Record detailed information of the last 16 trip events, including fault type, time, effective value, phasor value, and internal status flags.

Waveform capture: It can store up to 256 cycles of voltage and current waveform data (4 × 64, 8 × 32, or 16 × 16 cycles), activated by various triggering conditions (trip, disturbance, logic, manual), providing valuable data for fault analysis.

Hardware Design and Technical Specifications

4.1 Mechanical Structure and Installation

Fully withdrawable design: FP-5000 adopts an internal and external chassis structure, with internal electronic units that can be hot swappable. The CT circuit has a self short circuit function, which facilitates maintenance and replacement without interrupting external wiring.

Size and opening: The external dimensions are approximately 6.5 inches wide x 10 inches high x 7 inches deep. The standard opening size complies with Eaton's DT/MP series, and IQ panel opening modification solutions are also provided.

Protection level: The front panel has a protection level of IP52 (dustproof and drip proof), and the shell has a protection level of IP20.

4.2 Input/Output Configuration

Analog input: 4-channel current input (rated 5A or 1A), 4-channel voltage input (maximum 120Vac L-N). CT/PT ratio is programmable.

Digital input: 8-channel optically isolated dry contact input, provided with 40Vdc wet voltage internally, can be used for circuit breaker status, remote control, set value switching, etc.

Digital output: 7 relay outputs, including 5 normally open (Form A) and 2 conversion contacts (Form C). Among them, 6 channels are programmable, and 1 channel is a fixed "relay health" output. The contact capacity meets the ANSI C37.90 standard and can disconnect 5A/30VDC or 5A/250Vac.

4.3 Power Supply and Control

Power options: Two types of power boards are available: standard type (100-120Vac or 48-125VDC) and high-voltage type (100-240Vac or 100-250Vdc).

Power consumption: maximum 20-22VA.

Real time clock: Equipped with lithium battery, the clock accuracy is ± 1 minute/month at 25 ℃, and the battery can maintain the clock and event log for 72 hours after power failure.

4.4 Measurement accuracy

Current/voltage: 0.5% CT/VT rated value (measured value), 0.5% reading (when exceeding twice the rated value).

Power/electrical energy: 1.0% (power factor=1) to 1.5% (power factor 0.5).

Frequency: ± 0.02Hz.

Harmonic: ± 1%.

4.5 Environmental conditions

Working temperature: -40 ℃ to+60 ℃.

Storage temperature: -40 ℃ to+85 ℃.

Humidity: 5% to 95% non condensing.

Altitude: up to 2500 meters.

Front panel operation and human-machine interface

The front panel design of FP-5000 is intuitive and practical, suitable for on-site operation and monitoring.

5.1 Display and buttons

Vacuum fluorescent display screen: 4 lines x 20 characters, with backlight, can display measured values, set values, and event information.

Function buttons: including dedicated buttons for reset, monitoring, viewing settings, logging, status/control, settings, testing, etc. Each button is equipped with an LED indicator light.

Navigation buttons: up and down arrows (scroll line by line), up and down double arrows (scroll page), confirm and return keys.

Circuit breaker control: Independent "close" and "open" buttons that require authorization to be activated.

5.2 Status indicator light (LED)

Operation indicator light: Green flashing indicates that the microprocessor is running normally.

Trip/alarm indicator light: red, indicating phase trip, ground trip, other trips, alarm, start, etc. respectively.

Auxiliary LED: yellow, user programmable definition.

Setting/testing status light: red, indicating programming or testing mode.

Battery test button: used to check the status of the backup battery.

5.3 Operating Modes