Abstract: The intelligent lightning protection monitoring terminal does not simply connect a certain state quantity to the platform. When selecting a model, you must first look at the problems to be solved on-site, and then look at the monitoring objects, data collection, communication power supply, installation conditions, platform access and closed-loop operation and maintenance, so as to avoid the embarrassment of "many functions but unavailable data".
When many projects start to develop intelligent lightning protection, they will first ask about the terminal parameters: Can it be connected to SPD? Is there 4G? Can I upload it to the platform? What's the price? These issues are of course important, but if you only start from the hardware list, it is easy to make the selection into "function stacking".
The real selection logic should be the other way around: first determine what questions need to be answered on site. Do you want to know whether a lightning strike has occurred, or do you want to determine whether the SPD has deteriorated? Is it necessary to observe changes in grounding status, or is it necessary to reduce manual inspections at remote sites? Different problems require different data, and terminals should not be dominated by one model.
1. Before choosing a terminal, first clarify the monitoring objects.
There are many objects that can be monitored in the lightning protection system, including lightning current, SPD status, backup protection, grounding status, down conductor status, cabinet environment and communication status. The focus of power distribution cabinets, photovoltaic power stations, communication base stations, wind turbines, and petrochemical tank farms are not the same.
If the site is most concerned about SPD failure, then it is more important to monitor tripping, degradation, leakage current and temperature rise; if you are concerned about lightning strike tracing, you must record the lightning current peak value, time, polarity and waveform; if you are concerned about grounding reliability, you must observe grounding resistance or trend changes for a long time.
2. Data capability is more important than the number of interfaces
Just because a terminal has many interfaces does not mean it can form valid data. Intelligent lightning protection must at least distinguish between state quantities, event quantities and trend quantities. The state quantity answers "Is it abnormal now?", the event quantity answers "What happened in the past", and the trend quantity answers "Is the risk rising?"
Using only one switch value can only provide remote prompts at most; only by being able to record events and trends can it support risk judgment, accident tracing and predictive maintenance. When selecting a terminal, you must look at what data it can produce, not just how many terminals there are.
3. Communication and power supply determine whether the site can be implemented
Many intelligent lightning protection points are not in ideal environments. The communication base station may be in a mountainous area, the wind turbine generator is at the far end, the photovoltaic array area is large, and the petrochemical explosion-proof area also involves safety levels and installation restrictions.
Therefore, choices such as 4G, Ethernet, RS485, LoRa, WiFi, solar power supply, battery power supply, AC/DC power supply, etc. directly determine whether the system can operate stably in the long term. A terminal that is powerful but cannot be installed on site and difficult to maintain is not a good terminal.
4. Platform and closed loop determine terminal value
After the terminal collects the data, it must enter the platform to form alarms, classifications, work orders, and reviews. If the terminal can only display locally, the management value will be significantly limited.
The ultimate value of intelligent lightning protection terminals is not to add another device to the site, but to turn the lightning strike, SPD, grounding, and operation and maintenance processes into a manageable data link. Without a closed-loop platform, data can only remain "seen"; with a closed-loop, data can be turned into actions.
5. How does FEXLINK understand the selection of intelligent lightning protection terminals?
FEXLINK believes that terminals are not isolated products, but the entrance to lightning protection data production. The selection of FEXLINK intelligent lightning protection terminals should be based on the scenario, taking into consideration the monitoring objects, data types, communication methods, power supply conditions, installation environment and platform capabilities.
The truly suitable terminal is not the terminal with the longest parameters, but the terminal that can operate stably on site, continue to produce valid data, and enter the closed loop of operation and maintenance.
Conclusion: Selection is not about buying hardware, but determining data capabilities
The essence of intelligent lightning protection terminal selection is to determine what data is needed on site, how to obtain this data stably, and how this data can serve operation and maintenance. When the terminal can continuously record events, determine status, trigger alarms and accumulate files, intelligent lightning protection can truly move from equipment installation to status management.
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