This high-performance Rogowski coil / flexible split-core current transformer is an AC current sensor designed for permanent installation. It combines a thin, flexible, snap-on Rogowski sensing coil with a signal conditioner, providing accurate true RMS current measurement for applications such as high-current monitoring, power quality analysis, and relay protection.The product offers high linearity and a wide dynamic range from 1A to 100kA. It can adapt to large or irregularly shaped conductors, supports non-invasive installation, has strong anti-overload capability, and presents no danger when the secondary is open. It is an ideal choice for power monitoring and industrial measurement.
Features
- High linearity from 1A to 100kA
- Wide dynamic range
- Very useful with large size or awkward shaped conductors or in places with limited access
- No danger from open-circuited secondary
- Not damaged by large overloads
- Non-intrusive, no power drawn from the main
- Measurement uniformity at any position of the conductor inside the coil
- Excellent degree of rejection to the external current conductor
Applications
- Very high current monitoring
- DC ripple measurement
- Harmonics and transients monitoring
- Power monitoring & control systems
- Applicable in eletronic Watt-hour meter
- Power quality monitoring
- Electric furnace
- Harmonic management
- Relay Protection
Specification
|
MODEL
|
ZRC-420
|
ZRC-510
|
ZRC-620
|
ZRC-800
|
|
Coil length
|
420mm
|
510mm
|
620mm
|
800mm
|
|
Window size
|
120mm
|
150mm
|
185mm
|
240mm
|
|
Weight
|
105g
|
120g
|
135g
|
165g
|
|
Reference Rated current
|
1000A
|
3000A
|
6000A
|
10kA
|
|
Coil Resistance
|
from 100 to 300 Ω or 10kΩ
|
|
Coil Section
|
|
|
Lead length
|
|
|
Output (di/dt)
|
Uncalibrated
|
120mV/kA/50Hz
|
|
Calibrated
|
50mV/kA/50Hz
|
|
85mV/kA/50Hz
|
|
100mV/kA/50Hz
|
|
Read Accuracy
|
Calibrated<0.5% (central position, 25℃)
Uncalibrated < 5% tolerance (central position, 25℃)
|
|
Temperature
|
Uncalibrated 200ppm/C
|
|
|
Calibrated 400ppm/C
|
|
Position Error
|
±1% maximum
|
|
Output on 0A(zero drift)
|
≤1mV
|
|
Phase error
|
≤0.5°
|
|
Linearity
|
±0.2% of reading
|
|
Bandwidth
|
1Hz to 1MHz(-3dB)
|
|
Operating
temperature
|
-30℃ to 80℃
|
|
Storage
temperature
|
-40℃ to 90℃
|
Other requirements, please contact us to OEM.
|
|
|
|
|
|
|
|
Dimensions tolerance:
|
|
|
|
|
|
A,B,C,F:±5mm, D:±0.2mm,E:±10mm
|
|
|
|
|
|
Dimensions(mm)
|
ZRC-420
|
ZRC-510
|
ZRC-620
|
ZRC-800
|
|
A.Windows size A
|
125
|
155
|
190
|
245
|
|
B.Windows size B
|
120
|
150
|
185
|
240
|
|
C.Coil O.D.
|
147
|
172
|
202
|
267
|
|
D.Coil section
|
11
|
|
|
|
|
E.Lead Cable Total Length
|
2000
|
|
|
|
|
F:Coil length
|
420
|
510
|
620
|
800
|
Here are a variety of specifications for you to choose from.
FAQ
Q: What is the difference between a Rogowski coil and a traditional current transformer (CT)?
A: A Rogowski coil uses an air core structure with no magnetic core. It has no core saturation issues, offering extremely high linearity (from 1A to 100kA) and a very wide dynamic range. The Rogowski coil also presents no high-voltage hazard when the secondary is open, with strong anti-overload capability. Traditional CTs have an iron core and suffer from saturation issues at both low and high currents, with a limited dynamic range. Secondary open circuits can produce dangerous high voltages.
Q: What are the advantages of a flexible Rogowski coil in high-current measurement?
A: The flexible Rogowski coil is lightweight and bendable. It can be wrapped around large or irregularly shaped conductors, making it suitable for space-constrained installations. Compared to traditional rigid CTs, the flexible design offers easier installation, especially suitable for retrofit projects and applications where power cannot be turned off.
Q: Does conductor position affect measurement accuracy?
A: This Rogowski coil uses an optimised design with excellent measurement consistency regardless of the conductor's position inside the coil. It also provides superior rejection of external current interference. This ensures high measurement accuracy even if the conductor is not centred in the coil during actual installation.
Q: What is the safety of the Rogowski coil regarding overload and open circuit?
A: The Rogowski coil has an air core structure with no core saturation issues. Short-term high-current overload will not damage the device. The secondary output is a low-voltage signal, so an open circuit presents no high-voltage hazard, ensuring safe and reliable operation.
Your message must be between 20-3,000 characters!
