Underground-cable Explosion-proof Box Monitoring Device

Core Selling Tags

3‑channel temperature measurement + 1‑channel water‑immersion detection, dual‑mode RS485/WIFI communication, standard Modbus protocol, IP68 fully‑sealed protection, dual industrial certifications for EMC & salt‑spray corrosion, specially designed for explosion‑proof boxes, full‑dimensional ODM/OEM customization

Product Overview

Buried underground or inside utility tunnels, cable‑joint explosion‑proof boxes are highly susceptible to cable breakdown caused by joint overheating and water seepage inside the enclosure. Conventional operation‑maintenance cannot obtain real‑time data of internal temperature and water accumulation; faults are only discovered after power outages triggered by cable failure, resulting in extremely high repair costs.

The Haosheng HS‑FBH intelligent detection module is tailor‑made for explosion‑proof boxes of intermediate cable joints. Integrated with 3 high‑precision temperature probes and 1 water‑immersion sensor, it can be installed directly inside the explosion‑proof box to monitor joint temperature rise and internal water accumulation in real time. Equipped with dual‑mode RS485 and WIFI by default (4G available for custom configuration), it adopts standard industrial communication protocols for seamless connection with third‑party industrial‑control systems and power‑monitoring platforms without locking to proprietary backend systems. Abnormal conditions such as overtemperature and water ingress are uploaded in real‑time via communication interfaces to prevent failures including insulation breakdown and cable fire.

Adopting IP68 fully‑sealed potting technology, the unit withstands harsh underground environments with permanent water immersion, sludge, and acid‑alkaline soil. It is widely applied for online‑monitoring retrofits on high‑voltage intermediate‑joint explosion‑proof boxes, underground utility‑tunnel cables, and tunnel power cables.

Core Product Advantages

1. Optimized for Narrow Inner Space of Explosion‑proof Boxes
   Compact integrated module occupies minimal inner space and does not impair heat dissipation of cable joints. Compatible with most standard cable explosion‑proof boxes available on the market, rapid deployment can be realized without modifying box structures.
   
2. Synchronous Monitoring of Dual Hazards: Temperature Rise & Water Accumulation
   Three temperature‑sensing channels cover the left‑end, right‑end and central conductor core of cable joints. Together with the water‑immersion probe for accurate seepage detection, it captures two major risk factors‑overheating and water ingress‑and covers all key safety hazards inside explosion‑proof boxes.
   
3. IP68 Fully‑sealed Protection for Buried Anti‑corrosion Performance
   Full potting construction achieves IP68 ingress protection rating, resisting water penetration under long‑term immersion in underground water, sludge and acid‑alkaline soil. Passing both EMC electromagnetic‑compatibility and neutral salt‑spray industrial certifications, it runs stably in underground environments with strong electromagnetic interference and heavy corrosion.
   
4. Standard Multi‑mode Communication for Flexible Third‑party‑system Integration
   Dual‑mode RS485 and WIFI are standard; 4G is optional upon request. The RS485 interface complies with Modbus‑RTU industrial protocol and connects directly to power industrial‑control systems such as PLC and SCADA. WIFI supports universal IoT protocols including MQTT for flexible integration with diverse third‑party monitoring platforms and data middle‑platforms, offering flexible networking for different project architectures.
   
5. Convenient Deployment with Zero On‑site Modification
   Two power‑supply options are available: wide‑range DC power supply and built‑in lithium‑battery power supply. The battery‑powered variant requires no external power source, excavation or cabling. Deployment is completed simply by opening the explosion‑proof box and securing the module, without interrupting normal cable power supply. Dedicated configuration software enables local setting of alarm thresholds and data‑reporting cycles for easy commissioning and maintenance.
   
6. High‑precision Wide‑range Temperature Measurement for Strong Working‑condition Adaptability
   Measuring range: ‑50℃ ~ +200℃, accuracy ±2℃. It accurately captures short‑term high‑temperature anomalies induced by overload or short‑circuit. Measurement data remains drift‑free over long‑term operation and adapts to complex underground cable thermal conditions.
   
7. Full‑dimensional Customization for Diversified Project Requirements
   Full‑range ODM/OEM services are supported. Customizable items include temperature‑measuring range, reporting frequency, communication protocols, device appearance, silk‑screen LOGO and neutral packaging. Secondary software‑hardware development is supported for seamless docking with various third‑party power systems and platforms. Both small‑batch and mass‑volume orders are acceptable.
   

Communication & Integration Capabilities

This device is a pure hardware data‑acquisition terminal with no binding restrictions of proprietary cloud platforms or mobile applications. It focuses on multi‑parameter data acquisition and standardized transmission to satisfy third‑party‑system docking requirements for various projects.

• Industrial‑system Integration: The RS485 interface complies with Modbus‑RTU protocol with CRC check. It can directly connect with mainstream PLC, SCADA power‑monitoring systems and general configuration software for seamless integration into existing cable operation‑maintenance management systems.
  
• IoT‑platform Integration: WIFI/4G supports universal protocols including MQTT and Modbus‑TCP. Data format and reporting cycle can be adjusted on‑demand for flexible connection to customer‑owned monitoring platforms, energy‑management platforms and data middle‑platforms.
  
• Data Transmission: Supports active reporting of real‑time temperature and water‑immersion status, as well as trigger‑based uploading of over‑limit alarms. Full information including device operating status, sampled values and abnormal alarms can be fully synchronized to connected systems.
  
• Expandability: Communication protocols, data formats and alarm logics can be customized according to project requirements. Complete protocol documents and technical support are provided for diverse customized‑integration demands.
  

Application Scenarios

High‑voltage cable intermediate‑joint explosion‑proof boxes, underground utility‑tunnel cables, tunnel power cables, buried cables along urban arterial roads, underground cable lines in industrial parks