Named after German physicist Walter Rogowski, Rogowski is an electrical device which used to measure alternation current (AC), such as high-speed transients, pulsed currents, or power-frequency sinusoidal currents. It's no special requirements for the conductors & dimensions, with fast instantaneous response capability, which is widely used in occasions where traditional current measuring devices. The Rogowski coils with flexible type and rigid type.

The simplest way of a Rogowski coil is that a coil uniformly wound N turns per meter on a non-magnetic bobbin of constant cross-sectional area A. The winding wire returned to the staring point along the central axis of former and both ends are connected to the cable. The free end of the coil is plugged into the tee plug adjacent to the cable connection, so that the coil can surround the conductor carrying the current to be measured.

Coilcore flexible type Rogowski Coils

Advantage:

• Typical measurement accuracy: 0.2%
• Current range: 100mA ~ 100k
• Excellent rejection of external magnetic fields
• Almost none deviation
• Almost zero temperature drift
• Two-layer insulating inner electrostatic shield
• Support measure frequency from <1hz to="">10kHz
• Customization

Main Application:

• ARC fault current
• Power failure indicator
• Power frequency, intermediate frequency welding machine current
• Medium&high voltage switch-gear protection system
• Insulator leakage current measurement
• Motor overload/short circuit protection
• Power grid harmonic monitoring, active filter
• Transmission line fault diagnosis, traveling wave ranging
• Capacitor discharge, lightning current detection
• Large conductor ground fault monitoring

 Technical Parameter

Position Sensitivity

Dimension

Coilcore rigid type Rogowski Coils

People prefer customized Rogowski coils, to precise the best design, please kindly advise:

1. What is coil's working diameter?
2. What is the working frequency, sinal waveform, sine wave or pulse wave?
3. Current Input?
4. Current Output /Voltage Output?  AC or DC?
5. Accuracy?
6. Whether with integrator?
7. Auxiliary power supply voltage is 5V, 12V, 24V DC or 220V AC?
8. Default Coil Withstand voltage is 660V, whats about yours?