DC screen Accessory Unit MTJK03-JYDY Switching unit

Features: Each unit provides 30 insulation resistance detection function, measurement of positive and negative bus resistance to the ground;

If the number of system circuits exceeds 30, more than 10 insulation detection units can be expanded, that is, more than 300 insulation circuits can be detected.

Detection of bus (joint bus, control bus and negative bus) voltage to ground;

Receives the upper and lower limits of alarms from the master monitor over the RS485 bus and sends the voltage and resistance to the ground to the master monitor.

Technical parameters:

Power supply: 85V ~ 320V (DC)

Rated power consumption: ≤20W

Operating temperature: -5℃~40℃

Number of branches: 30

Voltage measurement accuracy: 1%

Communication port: one RS485 port

Insulation strength: Communication port withstands 500VAC/1Min, other ports withstands 2000VAC/1Min, AC port and working power port withstands 2500VAC/1Min.

Overall dimension (H × W × D) : 95mm×230mm×35mm