1. Introduction
The Vadias 3 Phase AC Current Sensor/Transducer (Model KXT43I-8) is a specialized device designed for measuring three-phase AC current in power grids. Its primary function is to convert AC current into a linear DC analog signal, which can then be used for monitoring, control, and transmission in various industrial applications.
This equipment is widely utilized in industrial control, power monitoring, and other fields where accurate measurement and analysis of AC current changes are critical.
Main Functions:
- Current Measurement: Provides real-time monitoring of three-phase AC current.
- Signal Conversion: Converts high AC current signals into standard low current (e.g., 4-20mA, 0-20mA, 0-10mA) or voltage (e.g., 0-10V, 0-5V, 1-5V) signals.
- Isolation Protection: Offers electrical isolation to safeguard downstream equipment from electrical disturbances.
- High Accuracy: Ensures precise measurement and conversion for reliable data.
Application Scenarios:
- Industrial Automation Systems
- Power Monitoring and Management
- Energy Management Solutions
- Motor Control Applications
2. Safety Information
Warning!
- Before using the current transmitter, carefully check and confirm the quantity, model, and specifications of the product against the packing list and product label.
- Thoroughly read this operation manual before installation and use.
- The operating environment for the current transmitter should be free from conductive dust, corrosive gases, strong impacts, and excessive vibration.
- The integrated structure of the current converter transmitter is not designed to be disassembled. Avoid collision and dropping the device.
- Do not alter or remove any labels on the product.
3. Product Overview and Features
The Vadias KXT43I-8 current transmitter is engineered for precision, efficiency, and safety in industrial environments.
Video: Overview of the Vadias 3 Phase AC Current Transmitter, highlighting its features and design.
Image: Front view of the Vadias 3 Phase AC Current Transmitter, showing the three current input holes and terminal block.
Key Features:
- High Precision: Ensures accurate current measurement with an upgraded model achieving 0.1% F.S.
- Anti-interference: Designed for stable operation in electrically noisy environments.
- Low Consumption: Energy-efficient design with low power consumption and less heat generation.
- Small Volume & Light Weight: Compact design for easy integration into control panels.
- Punch Design: Features perforated inputs for easy installation without insertion loss.
- New Terminal Block: Digital recognition, clear, convenient, and practical for wiring.
- Industry Top Components: Stable performance and high precision measurement.
- Standard Mounting Base: Supports 35mm DIN rail and screw mounting for flexible and fast installation.
- Electromagnetic Isolation: New electromagnetic isolation for enhanced safety and signal integrity.
- Stable Signal Output: Provides a stable and reliable output signal.
4. Specifications
| Parameter | Value |
|---|---|
| Model Number | KXT43I-8 |
| Brand Name | Vadias |
| Origin | Mainland China |
| Certification | CE, FCC, RoHS |
| Product Type | 3 Phase AC Current Sensor Transducer Transmitter |
| Display Type | Analog and Digital |
| DIY Supplies | Electrical |
| Accuracy Class | 0.5% (0.1% F.S. for upgraded models) |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -25°C to +85°C |
| Supply Voltage (Power) | DC24V |
| Dimensions (Approx.) | Length: 99mm, Width: 65mm, Height: 59mm (Base: 90mm x 35mm) |
| Hole Diameter for Current Wires | 8mm |
| Input Current Range | AC 0-1A to AC 0-50A (various models available) |
| Rated Output Signal | 4-20mA, 0-10mA, 0-20mA, 0-10V, 0-5V, 1-5V (model dependent) |
| Load Capacity | RL≤6500 |
| Linearity | 0.1% |
| Overload Capacity | 10 times nominal input |
| Isolation Voltage | 2.5kV/50Hz, 1 Minute |
| Offset Current | ≤80uA |
| Temperature Drift | ≤500PPM/°C |
| Bandwidth | 40-1KHz |
| Consumption Current | < 15mA + output current |
| Response Time | <200Ms |
5. Installation
5.1 Environmental Considerations
- Ensure the installation location provides good ventilation.
- Avoid areas with high temperatures and humidity.
- Maintain an installation spacing of at least 10mm when installing multiple units centrally.
5.2 Mounting
The transmitter supports both standard DIN rail mounting and flat screw fixation.
Image: Side view of the transmitter, illustrating the DIN rail mounting mechanism.
5.3 Wiring Instructions
Proper wiring is crucial for the correct operation and safety of the device. Always ensure the power supply is disconnected before performing any wiring.
- Power Supply Connection: Connect the DC24V power supply to the designated terminals. The wiring diagram on the product label must be strictly followed.
- Current Input Connection: Pass the three-phase AC current wires through the perforated holes labeled A, B, and C on the transmitter. Ensure the current passing direction aligns with any arrows marked on the product.
- Output Signal Connection: Connect the output terminals (e.g., 4-20mA, 0-10V) to your monitoring or control system. Ensure correct polarity and grounding.
Image: Detailed wiring diagram on the product label. Input: AC 0-15A, Output: DC4-20mA, Power: +24V. Output terminals are labeled Com (9), Com (8), 12 (C+), 24V (7), 11 (B+), 10 (A+).
Image: Example of how current wires are passed through the three input holes (A, B, C) for measurement.
After completing all wiring, double-check all connections for correctness before switching on the power and signal.
6. Operation
Once properly installed and wired, the Vadias 3 Phase AC Current Sensor/Transducer operates automatically. It continuously measures the three-phase AC current and converts it into the configured standard analog output signal (e.g., 4-20mA or 0-10V).
The output signal can then be read by your connected monitoring or control system (e.g., PLC, DCS, data logger) to display current values, trigger alarms, or implement control logic based on the measured current.
7. Maintenance
- Physical Inspection: Regularly inspect the device for any signs of physical damage, loose connections, or environmental contamination (dust, moisture).
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Avoid Disassembly: The integrated structure of the current converter transmitter is not designed to be disassembled. Attempting to open the device may void the warranty and cause damage.
- Label Integrity: Do not alter or tear any labels on the product, as they contain important identification and wiring information.
- Environmental Control: Ensure the operating environment remains within the specified temperature and humidity ranges to prolong the device's lifespan.
8. Troubleshooting
If you encounter issues with your Vadias 3 Phase AC Current Sensor/Transducer, consider the following common problems and solutions:
- No Output Signal:
- Verify that the DC24V power supply is correctly connected and active.
- Check all wiring connections (input, output, power) for looseness or incorrect polarity.
- Ensure the AC current is flowing through the sensor's input holes. - Incorrect Output Reading:
- Confirm that the input current is within the specified measuring range of your specific model.
- Check for any external electromagnetic interference that might affect the sensor's accuracy.
- Ensure the load capacity of your receiving instrument matches the transmitter's specifications. - Intermittent Operation:
- Inspect for unstable power supply or loose wiring connections.
- Check for environmental factors like excessive vibration or temperature fluctuations outside the operating range.
If the problem persists after checking these points, please refer to the detailed PDF manual or contact technical support.
9. Warranty and Support
For detailed warranty information and technical support, please refer to the official product documentation or contact your vendor. Keep your purchase receipt for warranty claims.
A comprehensive user manual with additional details and diagrams is available in PDF format. You can access it here: Vadias 3 Phase AC Current Sensor User Manual (PDF)