1. Inleiding
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, onder-voltage, overcurrent, and phase failure. It is suitable for industrial and commercial applications requiring reliable electrical monitoring and protection.
2. Veiligheidsinligting
WAARSKUWING: Gevaar van elektriese skok. Installasie en onderhoud moet slegs deur gekwalifiseerde personeel uitgevoer word.
- Ontkoppel altyd die krag voordat u die toestel installeer of diens.
- Verseker behoorlike aarding om elektriese skok te voorkom.
- Verify all wiring connections are secure and correct according to the wiring diagram.
- Moenie die toestel gebruik as dit beskadig lyk nie.
- Voldoen aan alle plaaslike en nasionale elektriese kodes.
3. Produk verbyview
3.1. Sleutel kenmerke
- Real-time 3-Phase Monitoring: Displays live voltage (L1, L2, L3) and current (L1, L2, L3) values.
- Omvattende beskerming: Voorsorgmaatreëls teen oorvolumetage, onder-voltage, overcurrent, and phase failure.
- Verstelbare Parameters: 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-spoormontering: Easy integration into standard electrical panels.
- Clear Terminal Labeling: Simplified installation with clearly marked input and output terminals.
3.2. Komponente en Vertoning
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.

Prent 3.2.1: Voorkant 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.

Prent 3.2.2: A perspective 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. Opstelling en installering
4.1. Montering
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. Bedradingsverbindings
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.
- Gaan alle verbindings dubbel na voordat krag aangeskakel word.

Prent 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. Bedryfsinstruksies
5.1. Aanvanklike aanskakeling
Once wired, apply power to the device. The LED display will illuminate, showing the real-time voltage and current for each phase.
5.2. Vertoon aanwysers
- V: Voltage vertoon.
- A: Huidige vertoning.
- Krag: Output indication.
- >V: Oorvoltage aanduiding.
- <V: Onder-voltage aanduiding.
- > ek: Over-current indication.
5.3. Stel parameters
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.

Prent 5.3.1: A detailed guide to setting various protection parameters on the EARU Electric Voltage Protector. This includes overvoltage, onderoltage, overcurrent, and recovery delay settings, with default values and adjustment ranges.
Key adjustable parameters include:
- Oorvoltage Beskerminginstelling: Range 230-300V (Default 270V).
- Oorvoltage Protection Recover Setting: Range 225-295V (Default 265V).
- Oorvoltage Recovery Delay: Range 1-500s (Default 30s).
- Oorvoltage Trip Delay: Range 0.1-30s (Default 1.0s).
- Ondervoltage Beskerminginstelling: Range 140-210V (Default 170V).
- Ondervoltage Protection Recover Setting: Range 145-215V (Default 175V).
- Ondervoltage Trip Delay: Range 0.1-30s (Default 1.0s).
- Oorstroombeskermingsinstelling: 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. Onderhoud
The EARU-1008 is designed for minimal maintenance. However, periodic checks are recommended:
- Hou die toestel skoon en vry van stof en puin.
- Periodically inspect wiring connections for tightness and signs of wear.
- Verseker voldoende ventilasie rondom die toestel om oorverhitting te voorkom.
7. Probleemoplossing
Indien die toestel nie soos verwag funksioneer nie, oorweeg die volgende:
- Geen skerm/geen krag: 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.
- Verkeerde lesings: If readings appear inaccurate, consider performing a manual error calibration as described in Section 5.3.

Prent 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. Spesifikasies
| Parameter | Waarde |
|---|---|
| Handelsmerk | EARU |
| Model | EARU-1008 |
| Gegradeerde Toevoer Voltage | AC 3*220V (N-L1/L2/L3) / 440V |
| Gegradeerde frekwensie | 50/60Hz |
| Over Current Protection Setting Range | 1-63A (Default 30A) |
| Oor Voltage Protection Setting Range | 230-300V (Default 270V) |
| Onder Voltage Protection Setting Range | 140-210V (Default 170V) |
| Produk afmetings | 20 x 10 x 20 cm |
| Item gewig | 450 g |
| Montage tipe | DIN Rail |

Prent 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. Waarborg en Ondersteuning
9.1. Waarborg
The EARU Electric Voltage Protector (Model EARU-1008) comes with a 1 jaar vervaardiger se waarborg vanaf die aankoopdatum, wat defekte in materiaal en vakmanskap onder normale gebruik dek. Bewaar asseblief u bewys van aankoop vir waarborgeise.
9.2. Kliëntediens
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.