コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
シュナイダーエレクトリック REL52002C (Easergy P3U30 Universal Protection Relay)
REL52002C は、シュナイダーエレクトリックの Easergy P3U30 のユニバーサルデジタル統合保護リレーです。 (以前の PowerLogic P3U30) シリーズ. 中型向けに特別に設計- および低圧電力システム, 包括的な保護を提供します, 測定, コントロール, および通信機能.
1 モデルコードの解釈
| コードセグメント | 説明 |
| REL | 製品カテゴリー: リレー (protection relay) |
| 52002 | Product series and basic configuration: Easergy P3U30 platform, 3CT/1Io/4VT/16DI/8DO/RS485 |
| C | Configuration suffix: デジタル入力 (から) voltage class 220V AC/DC |
Full corresponding order code: P3U30-5AAA3BBAC (標準構成)
2 主な仕様 & 機能
2.1 ハードウェア構成
アナログ入力: 3 phase currents (CT) + 1 残留電流 (Io) + 4 voltages (VT)
デジタル入力 (から): 16 チャンネル, universal for 220V AC/DC
デジタル出力 (する): 8 channels with watchdog function (reliable tripping under fault conditions)
コミュニケーション: RS485 (Modbus RTU); dual RJ45 Ethernet (IEC 61850) オプション
電源: Wide range 48–230V AC/DC
2.2 保護機能 (ANSI Standards)
| 保護タイプ | ANSI Code | 説明 |
| 過電流保護 | 50/51 | 瞬時 / definite time overcurrent; configurable inverse‑time characteristics |
| 地絡保護 | 50N/51N | Zero‑sequence overcurrent protection, suitable for TN/TT systems |
| 過電圧 / 不足電圧 | 59/27 | Phase‑/line‑voltage abnormality protection |
| 欠相 / Phase reversal | 46 | Prevents motor reverse rotation or unbalanced operation |
| 熱過負荷保護 | 49 | Simulates motor thermal characteristics to prevent burnout |
| Frequency protection | 81 | Over‑/under‑frequency protection for distributed generation |
| Synchronism check | 25 | Ensures safe grid‑connection operation |
2.3 測定 & 監視
完全な電気パラメータ: 現在, 電圧, 力 (active/reactive/apparent), 力率, 頻度
エネルギー計測: four-quadrant energy accumulation, class 0.5S accuracy
Harmonic analysis: voltage/current 2nd to 31st harmonics monitoring
イベントロギング: 1000 events with timestamp (1 ms resolution)
障害記録: built-in waveform capture before and after faults
3 動作環境
規格: IEC 61850, IEC 60255, ギガバイト/トン 14598 and other international/national standards
動作温度: -25℃～+70℃ (wide-temperature design)
保管温度: -40℃～+85℃
湿度: 5% ～ 95% (結露しないこと)
侵入保護: IP20 (フロントパネル), suitable for panel mounting in switchgear
耐振動性: IEC 60068-2-6 (5–150Hz, 0.5g)
代表的な用途:
中くらい- and low-voltage distribution substations (10kV/0.4kV)
Industrial plant power systems
商業ビルの配電
Renewable energy grid connection (PV, 風)
Motor control centers (MCC)
UPS input/output protection in data centers
4 同じシリーズの関連モデル (REL520xx)
| モデル | 主な違い | DI電圧 | コミュニケーション |
| REL52002C | 標準タイプ, 3CT/1Io/4VT | 220V | RS485 |
| REL52002 | 基本タイプ, same configuration | 220V | RS485 |
| REL52010C | With dual LC (変流器) | 110V | 2LC + RS485 |
| REL52016 | Ring terminals, DI 110V | 110V | RS485 |
| REL52020 | Ring terminals, DI 24V | 24V | RS485 + IEC 61850 |
5 公式注文情報
Standard order code: REL52002C
Full configuration code: P3U30-5AAA3BBAC
Replacement reference: Can replace earlier PowerLogic P3 series protection relays
付属品:
Communication module: P3-COM-ETH (IEC 61850 イーサネットモジュール)
Extension module: P3-EXT-DIO (additional DI/DO expansion)
Local HMI: P3-HMI (local human-machine interface)
6 代替モデル & 互換性
6.1 Within-series Replacements
Lower DI voltage required: REL52020 (24V DI), REL52016 (110V DI)
拡張コミュニケーション: REL52025 (dual RJ45 Ethernet)
6.2 Cross-series Replacements
高度なアプリケーション: SEPAM 20 シリーズ (medium-voltage systems)
Economy applications: Easergy P3U20 series (簡素化された構成, 10DI/5DO)
7 エンジニアリング実装メモ
- 取り付け: Standard 4U height, 19-inch rack mounting; front-or rear-wiring optional
- 配線:
CT入力: 5A/1A selectable (software configuration required)
VT input: 100V (line-to-line) / 57.7V (phase-to-neutral)
ディ/ドゥ: Phoenix terminals, screw or spring connection
- 試運転:
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- および低圧電力システム, especially industrial applications requiring 220V digital inputs and RS485 communication.
Core Parameter Comparison Table – Schneider Electric Easergy P3U30 Series (REL520xx)
1 Basic Parameter Summary
| モデル | DI電圧 | コミュニケーション | アナログ入力 | DO Channels | 電源 | 主な違い |
| REL52002C | 220AC/DCV | RS485 (Modbus) | 3CT+1Io+4VT | 8 | 48–230V AC/DC | Standard general‑purpose model, 220V DI, RS485 only |
| REL52002 | 220AC/DCV | RS485 (Modbus) | 3CT+1Io+4VT | 8 | 48–230V AC/DC | Identical hardware to C version, simplified suffix |
| REL52010C | 110AC/DCV | RS485+2LC | 3CT+1Io+4VT | 8 | 48–230V AC/DC | 110V DI, dual LC transformer interfaces |
| REL52016 | 110AC/DCV | RS485 (Modbus) | 3CT+1Io+4VT | 8 | 48–230V AC/DC | 110V DI, ring‑type terminals |
| REL52020 | 24ワシントンDCで | RS485+IEC 61850 | 3CT+1Io+4VT | 8 | 48–230V AC/DC | 24V DI, supports IEC 61850 イーサネット |
| REL52025 | 220AC/DCV | Dual RJ45+IEC 61850 | 3CT+1Io+4VT | 8 | 48–230V AC/DC | 220V DI, デュアルイーサネットポート, premium communication |
2 キーの選択 & 置換ルール
2.1 Voltage Class Replacement
Original model: REL52002C (220V DI)
直接交換 (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 共通の機能 (Across Series)
保護: 50/51 過電流, 50N/51N earth fault, 27/59 電圧, 46 phase rotation, 49 熱過負荷
測光: クラス0.5Sエネルギー, 2–31 harmonics
Logging: 1000 time-stamped events, 障害記録
取り付け: Standard 19-inch 4U for panel installation
ソフトウェア: 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, ファン, エアコンプレッサー
0.4kV critical circuits in commercial buildings: モール, オフィス, ホテル
Retrofit of old substations with only Modbus RTU for data upload
Municipal facilities: residential substations, streetlight power, small water pump stations
特性: 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
重工業: 油, 化学薬品, 冶金 (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 コミュニケーション
5 REL52025 (220V DI + Dual Ethernet IEC 61850)
High-end smart power distribution
New smart substations, main distribution in intelligent industrial parks
鉄道輸送 (metro/high-speed rail): traction substations, 配電
Critical circuits at airports, ポート, 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)
電力システム: 10kV/35kV substations, switching stations, ring main units
製造業: 冶金, 化学薬品, 紙, エレクトロニクス, equipment production
Renewables: PV, 風力, energy storage, EV charging clusters
インフラストラクチャー: データセンター, 鉄道輸送, 病院, 学校, 商業施設
マイニング & 水: mine power, ポンプ場, wastewater treatment plant protection
