Digital remote transmission lightning arrester leakage current meter

Digital remote transmission lightning arrester leakage current meter

The LE-MOA-601LZ series lightning arrester digital leakage current meter is developed by Xi'an Liou Measurement and Control Technology Co., Ltd. It adopts the low-power wireless communication protocol of the power Internet of Things construction specification, with a wide data upload distance, low power consumption, and high measurement accuracy. It is a new type of passive wireless sensing device for lightning arrester status that complies with the sensor specification of the power Internet of Things. The technical performance of this series of products meets the requirements of relevant national and industry standards, with low-power wireless communication modules and RTU communication interfaces that comply with State Grid standards. It can upload the operating parameters of lightning arresters (leakage current, resistive current, number of actions, action time, etc.) in real time to various platforms, thereby achieving real-time application of lightning arrester operation data and providing timely and reliable data guarantee for the operation status of lightning arresters.

The LE-MOA-601LZ series lightning arrester digital leakage current meter is widely used for online monitoring of metal oxide zinc lightning arresters in power transmission, transformation, and distribution. The digital leakage current meter of lightning arrester is a device that works in series under the lightning arrester to record the number of lightning arrester actions and monitor the active current and capacitive current of the lightning arrester. Our company's LE-MOA-601LZ series lightning arrester digital leakage current meter adopts a die cast aluminum integrated shell, which has good environmental damage capabilities such as anti-corrosion, moisture-proof, anti fouling, and shock resistance. The leakage current meter has good mechanical strength, sealing performance, electromagnetic shielding performance, and its appearance and size design meet the requirements of the general installation specifications for lightning arresters.

Principle of Energy Extraction

Leakage current energy harvesting: intermittent operation below 100uA; The relationship between the first charging time and charging current is approximately 0.5/I (S).

Solar powered: The solar panel starts charging when the illumination exceeds 1500lx.

2 Featured Features

Passive mode makes energy harvesting more convenient;

Using a pointer meter to display the full current ensures data stability and improves measurement accuracy;

No voltage signal required: high-speed sampling, using harmonic analysis method to calculate the resistive current of lightning arrester;

Passive working mode: using the leakage current of the lightning arrester itself to obtain energy, without the need to lay cables;

Secure and fast access, faster and more standardized transmission

Wireless transmission: Communication adopts State Grid standard low-power communication modules or Lora/2.4G modules, which comply with the construction specifications of the power Internet of Things;

Meets the information security requirements of State Grid Corporation of China and can quickly access various data management platforms;

Using CSS physical layer chips, supporting the protocol standards of State Grid's "Wireless Networking Protocol for IoT Node Equipment of Power Transmission and Transformation Equipment", "Communication Protocol for Micro Power Wireless Network of Power Transmission and Transformation Equipment IoT", and "Data Specification for IoT Sensor of Power Transmission and Transformation Equipment";

Adopting high-precision technology in the industry to provide more solutions for lightning arrester monitoring scenarios.

Using high-precision transformers, the amplification factor is automatically selected based on the magnitude of the measured current to achieve high-precision measurement;

Adopting dynamic phasor compensation algorithm to achieve high-precision measurement signal analysis;

Simple configuration, complete supporting facilities, 24-hour online work.

Adopting digital filtering algorithms to eliminate the "zero drift problem" caused by analog filters; Easy installation, flexible configuration, and the main equipment can be implemented without power outage;

The whole machine is designed with micro power, and the product can achieve 24-hour online operation;

Digital remote transmission lightning arrester leakage current meterProduct parameters

In order to more accurately grasp the operation status of lightning arresters, our company has independently developed a series of lightning arrester leakage current meters, which improves the monitoring of the operation status of lightning arresters, facilitates operation management, and the application of lightning arrester working condition data. When customers choose products, they need to have a detailed understanding of the parameter content and select performance requirements and product models in a targeted manner.

Product parameter table:

2 Product Structure

The LE-MOA-601LZ series lightning arrester leakage current meter is made of circular, stainless steel, with a beautiful appearance and good corrosion resistance and electromagnetic shielding effect. The high-voltage output terminal is led out from above through a small porcelain sleeve, and there is a large observation window on the front view for easy observation. The structure is lightweight and compact, suitable for indoor and outdoor installation. The installation accessories use high-strength hot-dip galvanized M10 × 30 bolt sets. The leakage current meter is installed at the lower end of the lightning arrester base for easy observation and serves as the grounding terminal.

The LE-MOA-601LZ series lightning arrester leakage current meter can be installed in various complex environments, and can meet the external installation of lightning arrester pillars and GIS inflatable tanks. The product structure dimension diagram is as follows:

Figure 2 Front view dimension diagram of leakage current meter

Figure 3 Side view dimension diagram of leakage current meter