Installed around a primary conductor without interrupting the circuit
Quick and easy installation process
Ideal for hard to reach areas and large conductors
Flexible and lightweight measuring head
Available Models
H-FCT (High temperature tolerance)
Temperature tolerance: Long time for over 150°, short time for over 200°. Designed for use in water or oil environments.
Technical Specification
Parameter
Specification Details
Output signal (di/dt)
144 mV/1000A @ 60 Hz, 120 mV/1000A @ 50 Hz
Accuracy (typ.)
< 1% typical (10% to 200% rated current, 25°C)
Linearity (10% to 100%)
± 0.2% of reading
Bandwidth (-3dB)
2Hz to 100kHz
Internal resistance
80 ± 10% Ohms/400mm
Max. Response time
1us (10 to 90%)
Phase error
≤ 1%
Basic Frequency
10Hz to 10kHz
Rated Current
300A AC
Working Frequency
0.8Hz to 10MHz
Measuring Range
0.01 to 300kA (crest factor < 1.5)
Operating Temperature
-10 to +60° C
Storage Temperature
-20 to +70° C
Order Information Example
Rated Current
Coil Length
Cable Length
Color
250A
300mm
1m
Black
500A
520mm
2m
Yellow
900A
800mm
3.5m
Red
50000A
Custom
Custom
Green
Example: ME333-1000-300-1-B features 333mV output, 1000A rated primary current, 300mm coil, 1m cable, in black.
Advantages
Simple to install in applications where space is limited.
Rogowski coil size specified independently of the primary current.
Does not suffer from magnetic saturation.
Intrinsically safe design.
Applications
Power meters & Energy sub-meters
Power quality & Condition monitoring
Distributed measurement systems
Lighting current & Electric furnace
Harmonic management & Relay Protection
Frequently Asked Questions
Q1: Can the H-FCT Rogowski coil be used in extreme temperatures?
Yes, the H-FCT model is specifically designed for high-temperature tolerance, handling over 150°C for long periods and up to 200°C for short durations. It is also suitable for use in water or oil.
Q2: Does the installation require cutting the power circuit?
No, one of the primary advantages is that it can be installed around a primary conductor without interrupting the circuit, making it ideal for retrofitting and maintenance.
Q3: What is the accuracy of this sensor?
The H-FCT offers a typical accuracy of less than 1% at 10% to 200% of the rated current, with a linearity of ±0.2% of the reading.
Q4: What is the maximum current range the H-FCT can measure?
The sensor has a very wide measuring range, from 0.01A up to 300kA, depending on the specific configuration and basic frequency.
Q5: Is the coil size dependent on the current being measured?
No, unlike traditional current transformers, the size of the Rogowski coil can be specified independently of the primary current, allowing for greater flexibility in space-constrained applications.
Q6: What certifications does the product hold?
The H-FCT series is CE certified, ensuring it meets the necessary safety and environmental standards for industrial use.
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