Combiner Box Monitoring (Power line Communication)

biner box monitoring system (power line communication), support 1000V / 1500V PV system, real-time monitoring of the string current, bus voltage, combiner box temperature, switch status, etc., alarm output when data is abnormal .

Advantages of power line communication (PLC): no need for communication wiring, communication quality is stable and reliable.

The advantages of power line communication (PLC) compared to Lora communication: Since Lora uses shared bandwidth, many factors affect the quality of communication: for example: intercom, weather, occlusion, etc. but power line communication (PLC) as long as the construction can be connected As long as it is connected, the power line communication is more stable and reliable than the Lora communication.

combiner box monitoring System (PLC) Connection Diagram

System Connection Diagram

Product Advantages

  • combiner box monitoring1 (PLC)
  • combiner box monitoring2 (PLC)

Combiner Box Monitoring(PLC)

Compatible with 1000V & 1500V systems:

  • First domestic 1500V system intelligent monitoring
  • CE-EMC Certification

Multi-function and widely used:

  • Added automatic address allocation, data freeze, journal recording, up to 18 alarm functions
  • Real-time monitoring of string current, bus voltage, temperature of the combiner box, and lightning arrester and breaker status
  • Supports current arc detection, alarm threshold can be set, automatic tripping and remote tripping can be realized
  • Shunt trip unit can be driven directly without tripping power supply, saving cost

Wireless Communication:

  • Data transmission using PLC(Power line Communication) wireless

Installation method:

  • PV combiner box installed for integration of DC arc detection

Increase Income

Precise Monitoring

Safety Protection

Main Parameters

Model Controller PLC expansion module Current / Arc Sensor






Maximum system voltage 1500V
Maximum number of inputs 24
Whether to support the trip function Yes
Do you need an external power supply -No, takes power from the busbar directly
Detection current range -20~+20A, FR-DCMG-HS4P(-30~+30A)
Communication method Power Line Communication (PLC)
Detection accuracy 1%