English
Current sensors based on the Rogowski coil principle can be used to measure large currents, typically up to 6000 A AC. E.g. JRF MOI 333M-115
These sensors must be powered with a voltage of +5VDC, so they cannot be connected directly only to the electricity meter, but the 5VDC supply voltage must also be connected to the sensor.
The sensor has 3 wires - red (P) is connected to +5VDC, white is connected directly to S1 of the electricity meter, black S2 is connected to S2 of the electricity meter and at the same time to the GND of the power supply.
The sensor requires a supply voltage of 5 VD ± 5%, max. consumption from the source 15 mA.
Variants of JRF MOI 333M current sensors:
| Product | Inom [A] | Hole size [mm] | Power source | Output signal | A class of accuracy |
|---|---|---|---|---|---|
| JRF MOI 333M-80 Inom | 100–6000 | 80 | 5VDC 15mA max | 333 mVAC | 600V CAT IV |
| JRF MOI 333M-115 Inom | 100–6000 | 115 | 5VDC 15mA max | 333 mVAC | 600V CAT IV |
| JRF MOI 333M-200 Inom | 100–6000 | 200 | 5VDC 15mA max | 333 mVAC | 600V CAT IV |
Sensor design:
