1. تعارف
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 ، انڊر والtage, overcurrent, and phase failure. It is suitable for industrial and commercial applications requiring reliable electrical monitoring and protection.
2. حفاظت جي ڄاڻ
خبردار: بجلي جي جھٽڪي جو خطرو. تنصيب ۽ سار سنڀال صرف قابل عملدار طرفان ڪئي وڃي.
- ڊوائيس کي انسٽال ڪرڻ يا سروس ڪرڻ کان اڳ هميشه بجلي بند ڪريو.
- برقي جھٽڪو کي روڪڻ لاءِ مناسب گرائونڊنگ کي يقيني بڻايو وڃي.
- تصديق ڪريو ته سڀئي وائرنگ ڪنيڪشن محفوظ ۽ صحيح آهن وائرنگ ڊاگرام مطابق.
- جيڪڏهن ڊوائيس خراب نظر اچي ته ان کي نه هلايو.
- سڀني مقامي ۽ قومي برقي ڪوڊس تي عمل ڪريو.
3. پراڊڪٽ ختمview
3.1. اهم خاصيتون
- Real-time 3-Phase Monitoring: Displays live voltage (L1, L2, L3) and current (L1, L2, L3) values.
- جامع تحفظ: Safeguards against over-voltage ، انڊر والtage, overcurrent, and phase failure.
- ترتيب ڏيڻ وارا پيرا ميٽر: 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 ريل مائونٽ: Easy integration into standard electrical panels.
- Clear Terminal Labeling: Simplified installation with clearly marked input and output terminals.
3.2. جزا ۽ ڊسپلي
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.

تصوير 3.2.1: سامهون 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.

تصوير 3.2.2: هڪ نقطه نظر 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. سيٽ اپ ۽ تنصيب
4.1. چڙهڻ
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. وائرنگ ڪنيڪشن
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.
- پاور لاڳو ڪرڻ کان پهريان سڀني ڪنيڪشن کي ٻه ڀيرا چيڪ ڪريو.

تصوير 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. آپريٽنگ هدايتون
5.1. شروعاتي پاور اپ
Once wired, apply power to the device. The LED display will illuminate, showing the real-time voltage and current for each phase.
5.2. ڏيکاريو اشارا
- V: جلدtage ڊسپلي.
- A: موجوده ڊسپلي.
- طاقت: Output indication.
- >V: اوور- Voltage اشارو.
- <V: انڊر والtage اشارو.
- > مان: Over-current indication.
5.3. پيرا ميٽرز سيٽ ڪرڻ
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.

تصوير 5.3.1: A detailed guide to setting various protection parameters on the EARU Electric Voltage Protector. This includes overvoltage ، انڊرولtage, overcurrent, and recovery delay settings, with default values and adjustment ranges.
اهم ترتيب ڏيڻ وارا پيرا ميٽر شامل آهن:
- اوور وولtagاي تحفظ جي سيٽنگ: Range 230-300V (Default 270V).
- اوور وولtage Protection Recover Setting: Range 225-295V (Default 265V).
- اوور وولtage Recovery Delay: Range 1-500s (Default 30s).
- اوور وولtage Trip Delay: Range 0.1-30s (Default 1.0s).
- انڊرولtagاي تحفظ جي سيٽنگ: Range 140-210V (Default 170V).
- انڊرولtage Protection Recover Setting: Range 145-215V (Default 175V).
- انڊرولtage Trip Delay: Range 0.1-30s (Default 1.0s).
- اوور ڪرنٽ پروٽيڪشن سيٽنگ: Range 1-63A (Default 30A).
- Overcurrent Trip Delay: Range 0.1-30s (Default 1.0s).
- جلدtage & 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. سار سنڀال
The EARU-1008 is designed for minimal maintenance. However, periodic checks are recommended:
- ڊوائيس صاف ۽ مٽي ۽ ملبي کان آزاد رکو.
- Periodically inspect wiring connections for tightness and signs of wear.
- ڊوائيس جي چوڌاري مناسب وينٽيليشن کي يقيني بڻايو وڃي ته جيئن وڌيڪ گرم ٿيڻ کان بچي سگهجي.
7. مسئلا حل ڪرڻ
جيڪڏهن ڊوائيس توقع مطابق ڪم نه ڪري رهي آهي، ته هيٺ ڏنل تي غور ڪريو:
- ڪابه ڊسپلي/ ڪابه طاقت ناهي: Check the main power supply and all wiring connections.
- حفاظتي سفر: 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.
- غلط پڙھڻ: If readings appear inaccurate, consider performing a manual error calibration as described in Section 5.3.

تصوير 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. وضاحتون
| پيرا ميٽر | قدر |
|---|---|
| برانڊ | اي آر يو |
| ماڊل | EARU-1008 |
| درجه بندي جي فراهمي Voltage | AC 3*220V (N-L1/L2/L3) / 440V |
| تعدد جي شرح | 50/60Hz |
| Over Current Protection Setting Range | 1-63A (Default 30A) |
| و Overيڪ جلدtage Protection Setting Range | 230-300V (Default 270V) |
| جلد تحتtage Protection Setting Range | 140-210V (Default 170V) |
| پيداوار جي ماپ | 20 x 10 x 20 سينٽي |
| شيءِ جو وزن | 450 جي |
| چڙهڻ جو قسم | ڊين ريل |

تصوير 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. وارنٽي ۽ سپورٽ
9.1. وارنٽي
The EARU Electric Voltage Protector (Model EARU-1008) comes with a 1 سالن جي ٺاهيندڙ جي وارنٽي خريداري جي تاريخ کان، عام استعمال هيٺ مواد ۽ ڪاريگري ۾ خرابين کي ڍڪيندي. مھرباني ڪري وارنٽي دعوائن لاءِ خريداري جو ثبوت رکو.
9.2. ڪسٽمر سپورٽ
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.