Schneider Electric REL52002C

Schneider Electric REL52002C (Easergy P3U30 Universal Protection Relay)

REL52002C este un releu de protecție digital integrat universal de la Schneider Electric Easergy P3U30 (anterior PowerLogic P3U30) serie. Proiectat special pentru mediu- și sistemele electrice de joasă tensiune, oferă o protecție completă, măsurare, controla, și funcții de comunicare.

1 Interpretarea Codului Modelului

Full corresponding order code: P3U30-5AAA3BBAC (configurație standard)

2 Specificații cheie & Funcții

2.1 Configurare hardware

Analog inputs: 3 phase currents (CT) + 1 residual current (Io) + 4 voltages (VT)

Digital inputs (DIN): 16 canale, universal for 220V AC/DC

Digital outputs (DO): 8 channels with watchdog function (reliable tripping under fault conditions)

Comunicare: RS485 (Modbus RTU); dual RJ45 Ethernet (IEC 61850) opțional

Alimentare electrică: Wide range 48–230V AC/DC

2.2 Funcții de protecție (ANSI Standards)

2.3 Măsurare & Monitorizare

Full electrical parameters: actual, Voltaj, putere (active/reactive/apparent), factor de putere, frecvenţă

Contorizarea energiei: four-quadrant energy accumulation, class 0.5S accuracy

Harmonic analysis: voltage/current 2nd to 31st harmonics monitoring

Event logging: 1000 events with timestamp (1 ms resolution)

Înregistrare defecțiuni: built-in waveform capture before and after faults

3 Mediul de operare

Standarde: IEC 61850, IEC 60255, GB/T 14598 and other international/national standards

Temperatura de functionare: -25°C ~ +70°C (wide-temperature design)

Temperatura de depozitare: -40°C ~ +85°C

Umiditate: 5% ~ 95% (necondens)

Protecție la intrare: IP20 (panoul frontal), suitable for panel mounting in switchgear

Rezistenta la vibratii: IEC 60068-2-6 (5–150Hz, 0.5g)

Aplicații tipice:

Mediu- and low-voltage distribution substations (10kV/0.4kV)

Industrial plant power systems

Distribuția energiei în clădiri comerciale

Renewable energy grid connection (PV, wind)

Motor control centers (MCC)

Protecție de intrare/ieșire UPS în centre de date

4 Related Models in the Same Series (REL520xx)

5 Informații oficiale de comandă

Standard order code: REL52002C

Full configuration code: P3U30-5AAA3BBAC

Replacement reference: Can replace earlier PowerLogic P3 series protection relays

Accesorii:

Modul de comunicare: P3-COM-ETH (IEC 61850 modul Ethernet)

Extension module: P3-EXT-DIO (additional DI/DO expansion)

Local HMI: P3-HMI (local human-machine interface)

6 Modele de înlocuire & Compatibilitate

6.1 Within-series Replacements

Lower DI voltage required: REL52020 (24V DI), REL52016 (110V DI)

Comunicare extinsă: REL52025 (dual RJ45 Ethernet)

6.2 Cross-series Replacements

Aplicații avansate: SEPAM 20 serie (medium-voltage systems)

Economy applications: Easergy P3U20 series (simplified configuration, 10DI/5DO)

7 Note de implementare a ingineriei

1. Montare: Standard 4U height, 19-inch rack mounting; front-or rear-wiring optional
2. Cablaj:

intrare CT: 5A/1A selectable (software configuration required)

VT input: 100V (line-to-line) / 57.7V (phase-to-neutral)

DI/DO: Phoenix terminals, screw or spring connection

3. Commissioning:

Parameter configuration and monitoring via Easergy Studio software

Local USB and remote network debugging supported

Comprehensive self-diagnostics for easy maintenance

REL52002C is a full-featured, flexible universal protection relay suitable for protection and monitoring in various medium- și sistemele electrice de joasă tensiune, especially industrial applications requiring 220V digital inputs and RS485 communication.

Core Parameter Comparison Table – Schneider Electric Easergy P3U30 Series (REL520xx)

1 Basic Parameter Summary

2 Selectarea tastelor & Replacement Rules

2.1 Voltage Class Replacement

Original model: REL52002C (220V DI)

Înlocuire directă (only DI voltage differs):

110V systems → REL52016

24V low-voltage systems → REL52020

2.2 Communication Upgrade

RS485 only: keep REL52002C

IEC 61850/Ethernet required: REL52020 / REL52025

2.3 Non-interchangeable Cases

REL52010C with 2LC interfaces is for dedicated transformer connections and not for standard panels

Terminal types differ; cabinet wiring must match ring or standard terminals

3 Common Features (Across Series)

Protecţie: 50/51 supracurent, 50N/51N earth fault, 27/59 Voltaj, 46 phase rotation, 49 thermal overload

Metering: Clasa de energie 0.5S, 2–31 harmonics

Logging: 1000 time-stamped events, înregistrarea defecțiunilor

Montare: Standard 19-inch 4U for panel installation

Software: Configured via Easergy Studio

Application Scenarios – Schneider Electric REL520xx Series

1 REL52002C (220V DI + RS485)

Most common and widely used standard model

10kV general distribution substations: feeder, incomer, bus tie, station transformer, capacitor protection

Standard MCC panels in industrial plants, motors for pumps, fani, compresoare de aer

0.4kV critical circuits in commercial buildings: malls, birouri, hoteluri

Retrofit of old substations with only Modbus RTU for data upload

Municipal facilities: residential substations, streetlight power, small water pump stations

Caracteristică: On-site 220V AC/DC control power, basic power monitoring only

2 REL52016 (110V DI + RS485)

For traditional high-voltage control circuits

Legacy substations and power plant auxiliary systems

Industrie grea: ulei, chimic, metalurgie (typically 110V DC control power)

Substation retrofits: reuse existing 110V secondary cables without rewiring

Mining and heavy machinery plant distribution protection

3 REL52010C (110V DI + RS485 + 2LC)

Special transformer configuration scenarios

Custom medium-voltage switchgear with dedicated LC transformer interfaces

Special circuits with integrated metering and protection

Industrial projects with fixed CT/VT wiring requirements

Rare in general projects; custom-engineered model

4 REL52020 (24V DI + IEC 61850)

Low-voltage automation & smart grid applications

Data center UPS input/output, precision power distribution

PV and wind turbine box-type substations, energy storage grid connection

Smart microgrids and distributed generation projects

Power distribution for automated production lines linked with PLC (24V low-voltage control)

Small smart power stations requiring IEC 61850 comunicare

5 REL52025 (220V DI + Dual Ethernet IEC 61850)

High-end smart power distribution

New smart substations, main distribution in intelligent industrial parks

Tranzit feroviar (metro/high-speed rail): traction substations, distribuția puterii

Critical circuits at airports, porturi, large venues

High-end projects requiring network redundancy, remote O&M, centralized dispatching

Multi-device networking and centralized monitoring in control centers

General Industry Applications (Full Series)

Power systems: 10kV/35kV substations, switching stations, ring main units

Fabricarea: metalurgie, chimic, paper, electronice, equipment production

Renewables: PV, wind power, energy storage, EV charging clusters

Infrastructură: centre de date, tranzit feroviar, spitale, scoli, complexe comerciale

Minerit & apă: mine power, pump stations, wastewater treatment plant protection