Description

Digital Box for Three-Phase Motor

The Digital Box for Three-Phase Motor is an advanced control device designed to enhance the performance, efficiency, and protection of three-phase motors used in various pumping applications. It integrates digital chip technology for precise control, automatic water level and pressure management, and comprehensive protection features. Below is a detailed description of its applications, characteristics, and specifications:

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Applications

The Digital Box for Three-Phase Motor is widely used in:

1. Pumps:
   • Deep well pumps, diving pumps, dredge pumps, pipeline pumps, pressure pumps, and multi-level pumps.
2. Water Supply and Drainage:
   • Life supply water, underground drainage, and building water supply systems.

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Key Characteristics

1. Rated Operating Voltage: AC 380V-415V/50Hz.
2. Rated Output Power: 0.75-15KW.
3. Digital Chip Control:
   • Integrates upper/lower water level control and pressure control automatically.
4. Setting Options:
   • One Key Automatic Setting: Simplifies configuration for overload and underload protection.
   • Manual Setting: Allows customized adjustments for specific requirements.
5. Comprehensive Protection Mechanisms:
   • Overload Protection: Prevents motor damage due to excessive current.
   • Underload (Dry Running) Protection: Safeguards the motor when operating without sufficient load.
   • Lack-Phase Protection: Protects the motor from damage due to phase loss.
   • Over/Under Pressure Protection: Ensures safe operation within specified pressure limits.
6. Adjustable Restart Time:
   • Underload restart time can be adjusted from 1 to 60 minutes.
7. Memory Function:
   • Stores the last 10 failure data for easy troubleshooting and analysis.
8. Compact and User-Friendly Design:
   • Small volume and easy installation.
9. Quality Assurance:
   • 6 stages of processing inspection and 120 hours of dynamic trouble simulation for reliability.

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Main Specifications

1. Locked-Rotor Actuating Time: Not more than 1.5 seconds.
2. Dry-Running Protection Actuating Time: Not more than 20 seconds.
3. Power Consumption:
   • Static Power: 4.5W.
   • Dynamic Power: 10W.
4. Over-Current Actuating Time: 1 second to 1 minute (inverse time lag characteristic: higher current results in shorter actuating time).
5. Liquid Level Control Mode:
   • Uses a pulse electrode probe for detection.
   • Transmission distance: ≤ 1000 meters.
6. Pressure Control Mode:
   • Compatible with electro-connecting pressure gauges, normal open/close pressure switches, and floating ball liquid level switches.

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Conclusion

The Digital Box for Three-Phase Motor is a versatile and reliable control solution for three-phase motors in pumping applications. Its advanced digital chip technology, comprehensive protection features, and user-friendly design make it an excellent choice for ensuring efficient and safe operation. Whether for water supply, drainage, or other pumping needs, this device delivers precise control and robust performance. For more information or to explore our product range, feel free to contact us or visit our website.

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