What does the intelligent system deployment for low-voltage switchgear include?
Release time： 2025-09-30
The intelligent system deployment for low-voltage switchgear primarily includes the following aspects:
I. Perception Layer: Comprehensive Multi-Dimensional State Collection
The perception layer is the foundation for intelligent transformation, requiring the installation of highly reliable sensors and smart components without compromising the original explosion-proof structure of the switchgear.
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Electrical Parameter Monitoring ：
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Current/Voltage : An explosion-proof Hall sensor (such as the LA-100C, with a range of 0–600 A and an accuracy of ±0.5%) is used to measure current via a through-core installation; meanwhile, a voltage sensor (like the DCV-1000, with an accuracy of ±0.2%) is connected in parallel across the busbar to monitor both line voltage and phase voltage.
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Electrical Leakage and Insulation : Integrates an intrinsically safe leakage current sensor (resolution of 0.1 mA) and a low-frequency signal injection-based insulation monitoring module (range 0–1000 MΩ), enabling real-time detection of ground faults and insulation degradation.
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Mechanical and Health Monitoring ：
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Circuit breaker status : A magnetic reluctance-type position sensor (Ex iaⅠ) is installed in the operating mechanism to detect the open/close status (response time < 5 ms).
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Contact temperature : Utilizing passive wireless temperature sensors (ultra-high frequency UHF band, measuring temperatures from -50 to 150°C with an accuracy of ±1°C), these sensors are affixed to critical areas such as circuit breaker moving and stationary contacts, as well as busbar joints.
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Vibration Monitoring : Install an intrinsically safe triaxial accelerometer (measuring range ±10g, sampling rate 1kHz) at the bottom of the cabinet to detect mechanical faults such as seizing of the operating mechanism and loose bolts.
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Environmental Monitoring ：
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Inside the cabinet : Deploy explosion-proof temperature and humidity sensors (SHT30-Ex, -40~85°C, 0~95% RH) and gas sensors (catalytic-beam type, 0~100% LEL, accuracy ±3%), with adjustable trigger thresholds (e.g., gas level > 0.5% LEL triggers an alarm).
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