1. 서론
This manual provides comprehensive instructions for the installation, operation, and maintenance of the EARU Electric 3-Phase Voltage and Overcurrent Protector, Model EARU-1008. This device is designed to safeguard 3-phase electrical systems by continuously monitoring voltage and current, offering protection against over-voltage, 언더볼륨tage, overcurrent, and phase failure. It is suitable for industrial and commercial applications requiring reliable electrical monitoring and protection.
2. 안전 정보
경고: 감전 위험이 있습니다. 설치 및 유지관리는 자격을 갖춘 전문가만 수행해야 합니다.
- 기기를 설치하거나 정비하기 전에 항상 전원을 차단하십시오.
- 감전을 방지하려면 올바르게 접지하십시오.
- 배선도에 따라 모든 배선 연결이 안전하고 정확한지 확인하십시오.
- 장치가 손상된 것으로 보이면 작동하지 마세요.
- 모든 지역 및 국가 전기 규정을 준수하세요.
3. 제품 오버view
3.1. 주요 특징
- Real-time 3-Phase Monitoring: Displays live voltage (L1, L2, L3) and current (L1, L2, L3) values.
- 종합 보호: 과다 볼륨 방지 장치tage, 언더볼륨tage, overcurrent, and phase failure.
- 조정 가능한 매개변수: User-configurable settings for protection thresholds and recovery delays.
- Automatic Phase Failure Reset: Detects and automatically resets after phase anomalies.
- High-Visibility LED Display: Bright red LED for clear readings in various lighting conditions.
- DIN 레일 마운트: Easy integration into standard electrical panels.
- Clear Terminal Labeling: Simplified installation with clearly marked input and output terminals.
3.2. 구성 요소 및 디스플레이
The device features a clear LED display and intuitive control buttons for configuration. The display shows real-time voltage and current for each phase, along with indicators for protection status.

이미지 3.2.1: 앞쪽 view of the EARU Electric Voltage Protector, showing the LED display for L1, L2, L3 voltage and current, along with control buttons (SET, Up, Down, Power) and protection indicators. Terminal labels for N, L1, L2, L3 (IN and OUT) are also visible.

이미지 3.2.2: 관점 view highlighting the product features and the input/output terminals (N, L1, L2, L3) at the top and bottom of the device. This image emphasizes the physical layout and connection points.
4. 설정 및 설치
4.1. 장착
The EARU-1008 is designed for DIN rail mounting. Securely attach the device to a standard 35mm DIN rail within an electrical enclosure.
4.2. 배선 연결
Refer to the wiring diagram below for correct connections. Ensure all connections are tight and properly insulated.
- Connect the incoming neutral (N) and phase lines (L1, L2, L3) to the 'IN' terminals.
- Connect the outgoing neutral (N) and phase lines (L1, L2, L3) to the 'OUT' terminals.
- 전원을 공급하기 전에 모든 연결을 다시 확인하십시오.

이미지 4.2.1: Detailed wiring diagram for the EARU Electric Voltage Protector, showing connections for N, L1, L2, L3 for both input and output. The diagram illustrates how to integrate the protector into a 3-phase electrical system.
5. 사용 설명서
5.1. 초기 파워업
Once wired, apply power to the device. The LED display will illuminate, showing the real-time voltage and current for each phase.
5.2. 디스플레이 표시기
- V: 권tag전자 디스플레이.
- A: 현재 디스플레이.
- 힘: Output indication.
- >V: 오버볼tag표시.
- <V: 언더볼tag표시.
- >나: Over-current indication.
5.3. 매개변수 설정
Use the 'SET' button to enter the configuration menu and the 'Up' and 'Down' keys to adjust values. Press 'SET' again to confirm and move to the next parameter. Hold 'SET' for 3 seconds to enter settings mode.

이미지 5.3.1: A detailed guide to setting various protection parameters on the EARU Electric Voltage Protector. This includes overvoltag전자, 언더볼tage, overcurrent, and recovery delay settings, with default values and adjustment ranges.
주요 조정 가능 매개변수는 다음과 같습니다.
- 오버볼tage 보호 설정: Range 230-300V (Default 270V).
- 오버볼tage Protection Recover Setting: Range 225-295V (Default 265V).
- 오버볼tage Recovery Delay: Range 1-500s (Default 30s).
- 오버볼tage Trip Delay: Range 0.1-30s (Default 1.0s).
- 언더볼tage 보호 설정: Range 140-210V (Default 170V).
- 언더볼tage Protection Recover Setting: Range 145-215V (Default 175V).
- 언더볼tage Trip Delay: Range 0.1-30s (Default 1.0s).
- 과전류 보호 설정: Range 1-63A (Default 30A).
- Overcurrent Trip Delay: Range 0.1-30s (Default 1.0s).
- 권tage & Current Manual Error Calibration: Adjust for accuracy, range -9.5% to +9.5% (Default 0%).
- Power-on Delay Setting: Adjustable Range: 1-500S (Default: 10s).
5.4. Manual ON/OFF
The power button allows for manual switching of the device output.
6. 유지관리
The EARU-1008 is designed for minimal maintenance. However, periodic checks are recommended:
- 장치를 깨끗하고 먼지나 이물질이 없는 상태로 유지하십시오.
- 배선 연결부가 단단히 고정되었는지, 마모 흔적이 있는지 주기적으로 점검하십시오.
- 기기의 과열을 방지하기 위해 기기 주변에 적절한 환기가 이루어지도록 하십시오.
7. 문제 해결
기기가 예상대로 작동하지 않는 경우 다음 사항을 고려하십시오.
- 디스플레이 없음/전원 없음: Check the main power supply and all wiring connections.
- Protection Trip: Identify the active protection indicator (>V, <V, >I). Check the corresponding voltage or current levels. The device will automatically reset once conditions return to normal, based on configured recovery delays.
- Phase Failure: The device automatically detects and responds to phase failures, initiating a cut-off and auto-reset once the phase is restored.
- 잘못된 판독: If readings appear inaccurate, consider performing a manual error calibration as described in Section 5.3.

이미지 7.1: This image highlights the various protection features of the EARU Electric Voltage Protector, including phase failure cut-off, low voltage cut-off, high voltage cut-off, overload cut-off, phase sequence cut-off, and auto-reset on normal conditions. These are key aspects for troubleshooting protection trips.
8. 사양
| 매개변수 | 값 |
|---|---|
| 상표 | 에아루 |
| 모델 | EARU-1008 |
| 정격 공급량tage | AC 3*220V (N-L1/L2/L3) / 440V |
| 정격 주파수 | 50/60Hz |
| Over Current Protection Setting Range | 1-63A (Default 30A) |
| 오버볼tage Protection Setting Range | 230-300V (Default 270V) |
| 언더볼tage Protection Setting Range | 140-210V (Default 170V) |
| 제품 치수 | 20 x 10 x 20cm |
| 품목 무게 | 450g |
| 장착 유형 | DIN 레일 |

이미지 8.1: This image provides a visual representation of the EARU Electric Voltage Protector's dimensions and a table of key technical specifications, including voltage, frequency, and protection ranges.
9. 보증 및 지원
9.1. 보증
The EARU Electric Voltage Protector (Model EARU-1008) comes with a 1년 제조사 보증 구매일로부터 정상적인 사용 조건에서 발생하는 재료 및 제조상의 결함에 대해 보증이 적용됩니다. 보증 청구를 위해 구매 증빙 자료를 보관해 주십시오.
9.2. 고객 지원
For technical assistance, troubleshooting, or warranty inquiries, please contact EARU customer support through your retailer or the official EARU website. Provide your model number (EARU-1008) and a detailed description of the issue for efficient service.





