AC network insulation monitor SRI/D2

for three-phase systemsfor low voltage networkfor single-phase electrical networks

SRI/D2 is a device used for the permanent control of the insulation of single-phase or three-phase networks with neutral isolated from earth or without neutral. The device works on the principle of applying a continuous measuring voltage between the network under control and the earth. The device will measure the current that the system absorbs following the application of this voltage. The applied voltage / detected current ratio determines the actual value of the insulation resistance of the system The front panel shows the indications of the device in service and fault, the test button and the indication of the intervention threshold. control with DC voltage injection mains to control: AC ≤400Vca 1 intervention threshold Ran adjustment: 50÷300 KΩ LED display 1 NO-C-NC contact