Model:
HMJ1010-WGAT
Product Overview:
The HMJ1010-WGAT Smart 4-in-1 Partial Discharge Sensor integrates four advanced detection technologies: Ultra High Frequency (UHF), Ultrasonic (AA), Transient Earth Voltage (TEV), and Temperature & Humidity monitoring. Widely used in substations, switchgear stations, and other critical power environments, it provides comprehensive partial discharge (PD) and environmental monitoring for equipment such as ring main units (RMU), switchgears, and GIS. This ensures early detection of insulation defects and potential hazards, enhancing equipment reliability and operational safety.
Key Features:
1、Multi-Parameter Integrated Detection:
Combines UHF, TEV, AA, and temperature/humidity monitoring in a single device. It captures electrical signals, mechanical vibrations, and environmental data, enabling comprehensive analysis for accurate PD diagnosis and insulation assessment.
2、Strong Anti-Interference Capability:
Equipped with advanced filtering and shielding technologies to effectively suppress external electromagnetic interference and noise, ensuring stable and reliable performance even in complex power system environments.
3、Intelligent Diagnosis & Early Warning:
Built-in intelligent algorithms and data analysis modules process real-time data to automatically identify PD characteristics and patterns. It provides predictive diagnostics and early warnings based on preset thresholds, helping prevent insulation failures.
4、Easy Installation:
Designed for convenient installation, typically via magnetic mounting or other simple methods. Installation and maintenance can be performed while equipment remains live, ensuring no disruption to power supply or operations.
Technical Specifications:
| Parameter | Technical Data |
| UHF Frequency Range | 300–1500 MHz |
| UHF Measurement Range | -80 to -10 dBm |
| UHF Equivalent Height | ≥10 mm |
| TEV Frequency Range | 1–100 MHz |
| TEV Measurement Range | 0–70 dB |
| AA Resonant Frequency | 40 kHz |
| AA Measurement Range | -10 to 75 dB |
| Temperature Range | -40 to 125℃ |
| Humidity Range | 0–100% RH |
| Communication | Wireless: LoRa; Wired: RS485 |
| Power Supply | Wireless: Built-in lithium battery; Wired: DC24V |
| Operating Temp. | -40 to +85℃ |
| Operating Humidity | 5–95% RH |
Applications:
- Substations
- Switchgear Stations
- RMUs and Switchgears
- GIS (Gas-Insulated Switchgear)
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