Cable sheath circulation monitoring system
The high-voltage cable grounding circulation monitoring system is composed of a signal monitoring unit, a data communication unit, and a local sensor unit. It completes the environmental temperature and humidity detection of the high-voltage cable grounding circulation and the grounding box, and transmits the data to the local monitoring panel through the RS485/IEC61850 communication module. The monitoring terminal uses advanced measurement circuits, high-speed MCUs, and stable and reliable sensors to achieve accurate measurement of monitoring signals and reliable data transmission.
Input voltage range DC 12V-24V
Working current is less than 20 mA in static state, not more than 30 mA in working state
The mean time between failures is greater than 30000 hours
Information storage Support local information storage, which can be actively uploaded to the integrated intelligent data management platform after the power is turned on again
The number of local information storage is not less than 1000
Uplink communication RS485/IEC61850
Downlink communication mode RS-485; 4-20mA;
Local local bus communication transmission distance radius is not less than 1 km
Wired network communication supports optical network transmission
The number of local bus ports that can be multiplexed with terminal devices is not less than 16
Protection grade IP68
Explosion-proof mark ExdIIBT6
Dustproof level is not lower than the level 5 of IEC529 standard
Electromagnetic compatibility meets GB9254-2007
Meet GB17625.1-2003
Working temperature -55℃～+85℃
Operating environment humidity 10%～95%
