1. Inngangur
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, undir-binditage, overcurrent, and phase failure. It is suitable for industrial and commercial applications requiring reliable electrical monitoring and protection.
2. Öryggisupplýsingar
VIÐVÖRUN: Hætta á raflosti. Uppsetning og viðhald ættu aðeins að vera framkvæmd af hæfu starfsfólki.
- Aftengdu alltaf rafmagnið áður en tækið er sett upp eða viðhaldið.
- Gakktu úr skugga um rétta jarðtengingu til að koma í veg fyrir raflost.
- Gakktu úr skugga um að allar raflagnatengingar séu öruggar og réttar samkvæmt raflagnaskýringarmyndinni.
- Ekki nota tækið ef það virðist skemmt.
- Fylgdu öllum staðbundnum og landsbundnum rafmagnsreglum.
3. Vöru lokiðview
3.1. Helstu eiginleikar
- Real-time 3-Phase Monitoring: Sýnir lifandi hljóðstyrktage (L1, L2, L3) and current (L1, L2, L3) values.
- Alhliða vernd: Safeguards against over-voltage, undir-binditage, overcurrent, and phase failure.
- Stillanlegar breytur: 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-skinnfesting: Easy integration into standard electrical panels.
- Clear Terminal Labeling: Simplified installation with clearly marked input and output terminals.
3.2. Íhlutir og skjár
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.

Mynd 3.2.1: Framan 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.

Mynd 3.2.2: Sjónarhorn 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. Uppsetning og uppsetning
4.1. Uppsetning
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. Raflagnatengingar
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.
- Athugaðu allar tengingar áður en rafmagn er sett á.

Mynd 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. Notkunarleiðbeiningar
5.1. Upphafleg ræsing
Once wired, apply power to the device. The LED display will illuminate, showing the real-time voltage and current for each phase.
5.2. Sýna Vísar
- V: Voltage sýna.
- A: Núverandi skjár.
- Kraftur: Output indication.
- >V: Yfir-voltage vísbending.
- <V: Undir-voltage vísbending.
- > ég: Over-current indication.
5.3. Stilla færibreytur
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.

Mynd 5.3.1: A detailed guide to setting various protection parameters on the EARU Electric Voltage Protector. This includes overvoltage, undirvoltage, overcurrent, and recovery delay settings, with default values and adjustment ranges.
Key adjustable parameters include:
- Yfirvoltage Verndarstilling: Range 230-300V (Default 270V).
- Yfirvoltage Protection Recover Setting: Range 225-295V (Default 265V).
- Yfirvoltage Recovery Delay: Range 1-500s (Default 30s).
- Yfirvoltage Trip Delay: Range 0.1-30s (Default 1.0s).
- Undirvoltage Verndarstilling: Range 140-210V (Default 170V).
- Undirvoltage Protection Recover Setting: Range 145-215V (Default 175V).
- Undirvoltage Trip Delay: Range 0.1-30s (Default 1.0s).
- Overcurrent Protection Setting: Range 1-63A (Default 30A).
- Overcurrent Trip Delay: Range 0.1-30s (Default 1.0s).
- Voltage & 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. Viðhald
The EARU-1008 is designed for minimal maintenance. However, periodic checks are recommended:
- Haltu tækinu hreinu og lausu við ryk og rusl.
- Periodically inspect wiring connections for tightness and signs of wear.
- Tryggið næga loftræstingu í kringum tækið til að koma í veg fyrir ofhitnun.
7. Bilanagreining
Ef tækið virkar ekki eins og búist var við skaltu íhuga eftirfarandi:
- Enginn skjár/Enginn rafmagn: 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.
- Fasabilun: The device automatically detects and responds to phase failures, initiating a cut-off and auto-reset once the phase is restored.
- Rangar lestur: If readings appear inaccurate, consider performing a manual error calibration as described in Section 5.3.

Mynd 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. Tæknilýsing
| Parameter | Gildi |
|---|---|
| Vörumerki | EARU |
| Fyrirmynd | EARU-1008 |
| Metið framboð Voltage | AC 3*220V (N-L1/L2/L3) / 440V |
| Máltíðni | 50/60Hz |
| Over Current Protection Setting Range | 1-63A (Sjálfgefið 30A) |
| Yfir Voltage Protection Setting Range | 230-300V (Sjálfgefið 270V) |
| Undir Voltage Protection Setting Range | 140-210V (Sjálfgefið 170V) |
| Vörumál | 20 x 10 x 20 cm |
| Þyngd hlutar | 450 g |
| Gerð uppsetningar | DIN járnbraut |

Mynd 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. Ábyrgð og stuðningur
9.1. Ábyrgð
The EARU Electric Voltage Protector (Model EARU-1008) comes with a 1 árs ábyrgð framleiðanda frá kaupdegi, sem nær yfir galla í efni og framleiðslu við eðlilega notkun. Vinsamlegast geymið kaupkvittunina vegna ábyrgðarkröfu.
9.2. Þjónustudeild
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.





