The main factors of insufficient selection principle for small current grounding.
The automatic line selection technology for small current grounding is a challenging problem. Its difficulty mainly lies in the fact that during a single-phase grounding fault, the fault signal is small, unlike other fault types such as two-phase short circuit or two-phase grounding short circuit, which have much larger fault signals. The types of single-phase grounding faults are complex and uncertain, including full grounding faults, intermittent arc grounding, grounding with unstable resistance, and grounding through branches (high-resistance grounding), among others.
2022/07/28
Technical Characteristics of Online Monitoring Devices for Power Quality
High-precision monitoring: capable of measuring small voltage and current changes as well as low-order and high-order harmonics, ensuring the accuracy of monitoring data.
2025/02/27
Application scenarios of online temperature measurement devices for electrical contacts
The online temperature measurement device for electrical contacts is widely used in electrical equipment such as high and low voltage switch cabinets, transformers, and distribution boxes. Especially in high voltage switch cabinets, where high temperatures are likely to occur at the contact points, the online temperature measurement device is of great significance for preventing fires and ensuring the safe operation of equipment.
2025/02/27
Online temperature measurement device for electrical contacts main components
Temperature Sensor: Responsible for collecting temperature data from electrical contacts. Common types of temperature sensors include battery-powered wireless temperature sensors and CT induction power wireless temperature sensors. These sensors have characteristics such as high precision, high sensitivity, and strong anti-interference ability, ensuring that the collected temperature data is accurate.
2025/02/27
Hardware composition of microcomputer-type resonance elimination device
Power supply section: Uses a high-frequency switching power supply, which has strong anti-interference capability and allows for a wide range of input voltage fluctuations. The input voltage range is wide, suitable for both AC and DC use.
2025/02/27
Mobile/WeChat
