Wireless High Voltage Phase Detector
Product Overview
The MOEORW-WTA60 wireless high voltage phase detector is designed for phase verification during grid connection and loop networking of high-voltage transmission lines. It supports live line operation for AC circuits ranging from 220V to 220kV, and integrates high-voltage voltage detection function. Adopting wireless data transmission technology, the device eliminates the drawbacks of wired phase detectors, delivering high safety and convenient operation. It can be upgraded to support remote phase detection as required.The system consists of two transmitters and one main receiver unit. The transmitters detect live line status, phase position and frequency of power lines, then transmit measured data to the main receiver via radio signals. The main receiver calculates the phase difference between two lines and judges whether the lines are in-phase or out-of-phase automatically.
Working Principle
Two transmitters collect phase and frequency data of respective power lines in real time and transmit signals wirelessly to the main unit. The main receiver analyzes the phase difference between the two groups of signals, and outputs judgment results of in-phase or out-of-phase. Each transmitter is also capable of identifying live high-voltage lines independently.
Technical Specifications
| Item | Parameter |
| Phase Difference Accuracy | ≤ 5° |
| Frequency Accuracy | ±0.1 Hz |
| Measuring Voltage Range | 220V ~ 220kV |
| Maximum Wireless Transmission Distance (Line of Sight) | 100 m |
| Leakage Current (High Voltage Measurement) | < 10 μA |
| Working Power Consumption (Transmitter) | < 0.1 W |
| Working Power Consumption (Main Receiver) | < 0.3 W |
| Main Unit Battery Capacity | 2500 mAh (Rechargeable Lithium Battery, Removable) |
| Transmitter Battery Capacity | 450 mAh (Rechargeable Lithium Battery, Removable) |
| Auto Power-off Time | 30 minutes (No operation) |
| Operating Temperature | -35℃ ~ +45℃ |
| Storage Temperature | -40℃ ~ +55℃ |
| Relative Humidity (Operating & Storage) | ≤ 95% RH |
| Overall Weight | Approx. 5 kg |
| Product Dimension (Package) | 710 mm × 260 mm × 110 mm |
Main Features
1) Hardware & Structural Design Equipped with dedicated telescopic insulating rods (3 m standard) for high-voltage operation. All transmitters and the main receiver adopt detachable rechargeable lithium batteries for easy replacement and maintenance. The device is fitted with indicator lights, buzzer and physical buttons for mode switching and power control.
2) Performance Advantages Built-in voice prompt system to report measurement results and operation steps. The display screen synchronously shows phase difference, frequency, vector diagram and phase judgment results. Low power consumption design ensures long-duration field operation.
3) Application Value Suitable for on-site phase detection across multiple voltage levels. The wireless structure isolates operators from high-voltage circuits to improve operational safety. It supports close-range phase detection and can be upgraded to realize remote phase detection functions.
4) Application Scope
- Phase verification for grid connection and loop networking of 220V ~ 220kV AC transmission lines· Live line inspection for high-voltage circuits and secondary side circuits· Phase measurement for switchgear cabinet induction power taking points· Phase sequence checking for power distribution systems
Operation Instructions for Different Voltage Levels
1. 6kV ~ 220kV Lines: Connect transmitters with 3 m insulating rods, hang or approach the transmitters to high-voltage lines for measurement.
2. 6kV ~ 10kV Insulated Overhead Cables: Contact the line insulation layer with transmitter hook, and ground the transmitter via charging port.
3. Switchgear with Live Indicator: Connect the live indicator test point to the transmitter with special test wires and ground the transmitter.
4. 220V / 380V Low Voltage Lines: Contact live lines with transmitter hook; ground the transmitter or directly hold the transmitter tail for operation.
Standard Accessories
· 2 × Transmitters· 1 × Main Receiver· 2 × 3 m Insulating Rods· Matching Test Wires, Grounding Wires· Chargers, Operation Manual
Maintenance & Daily Care
1. Fully charge the batteries before long-term storage.
2. Store the equipment in dry, clean and low-temperature environments; avoid humid, high-temperature and dusty conditions.
3. Perform withstand voltage test on insulating rods before first use and conduct routine withstand voltage inspection once every year.
Troubleshooting
| Inspection Item | Normal Status | Abnormal Phenomenon | Solution |
| Withstand Voltage of Insulating Rod | Leakage current < 10 μA | Leakage current > 10 μA | Replace the insulating rod |
| Transmitter & Main Unit Function | Transmitter works normally; main unit displays transmitter data | Transmitter fails to start | Recharge the transmitter; return to factory for repair if the fault persists |
| Transmitter works but main unit receives no signal | Inspect both devices; send back to factory for maintenance |
Executive Standards
GB13398-92, GB311.1-311.6-8, 3DL408-91, DL/T971-2005
FAQ
Q: The phase difference value circulates from 0° to 360° during measurement. What is the cause?
A: The frequencies of the two measured lines are inconsistent. It is not allowed to connect to the grid directly. Synchronize frequency and phase via synchronization devices first.
Q: Can the standard 3 m insulating rod be used for lines above 220kV?
A: No. Use insulating rods longer than 3 m for voltage levels higher than 220kV in accordance with safety regulations.
Q: Why does the main unit display two transmitters when only one is connected during self-inspection?
A: This is a normal phenomenon when the distance between devices is less than 0.2 m, which will not affect formal measurement.
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