1000A/100mV Flexible Rogowski Coil
Specifications
1,Rated Voltage:0.66KV
2,Insulation Voltage:3500V
3,Rated Frequency:50HZ/60HZ
4,Operating Temperature:-20ºCto 70ºC
5,Certificates:UL,CE ,ROHS
Features
1,Small cost
2,Split core design ,Easier installation
3 Build diode ,no high voltage danager
4,Good linearity at very low current
描述
Products Description
Rogowski Coil are designed for fast and easy installation on existing primary conductors/ BUS bars. The split design permits non-contact AC current or current pulse measurement without requiring that the primary conductor be taken offline and disconnected for the current sensor installation. This method provides for the safe, easy and portable measurement of current. A current sensor that is based upon the Rogowski Coil principle offers significant advantages over the standard magnetic core current transformer products. Specifically, since the sensor does not incorporate a magnetic core, magnetic core saturation (the point where incremental increases in magnetic flux are not reflected in proportional increases in secondary signal outputs) is avoided.
Product Parameters
Input current range:0-10000A
Output :Flexible Rogowski coils 0.333Vac,100mV/per 1000A, 0-5Vac
Bandwidth :1Hz-1MHzAccuracy :≤±1%
Response time :<10ms
Auxiliary power supply :6-12VDC
Coil length :≤2m
Status indicator :LED light
Storage temperature range :-40ºC-70ºC
Operating temperature range :-20ºC-55ºC
Storage humidity range :10%-90% without dew
Operating humidity range :10%-90% without dew
Benefits
It is not a closed loop, because the second terminal is passed back through the center of the toroid core (commonly a plastic or rubber tube) and connected along the first terminal. This allows the coil to be open-ended and flexible, allowing it to be wrapped around a live conductor without disturbing it. However, positioning of the measured conductor is important in that case: It has been shown that, with flexible sensors, the effect of the position on the accuracy ranges from 1 to 3%. Another technique uses two rigid winding halves with a precise locking mechanism.
Due to its low inductance, it can respond to fast-changing currents, down to several nanoseconds.
Because it has no iron core to saturate, it is highly linear even when subjected to large currents, such as those used in electric power transmission, welding, or pulsed power applications.This linearity also enables a high-current Rogowski coil to be calibrated using much smaller reference currents.
No danger of opening the secondary winding.
Lower construction costs.
Temperature compensation is simple.
For larger currents conventional current transformers require an increase of the number of secondary turns, in order to keep the output current constant. Therefore, a Rogowski coil for large current is smaller than an equivalent rating current transformer