staticdj ETCR-FA-FB Series Flexible Coil Current Sensor User Guide
- August 31, 2024
- staticdj
Table of Contents
ETCR-FA-FB Series Flexible Coil Current Sensor
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Specifications:
-
Function: Detecting of AC leakage current, AC big current, high
harmonic currents, complex waveforms current, inrush transient
current, phase, electric energy, power, power factor. -
Testing method: Flexible CT – the output signal is the
derivative of the current with respect to time, the input current
can be truly restored by integrating the output voltage
signal. -
Coil Diameter: 7.5mm/12mm (optional)
-
Range: 10mA to 10,000A
-
Resolution: 10mA
-
Output Interface: Electric field interference
-
Wire Position: Current Frequency Response Frequency
-
Line Voltage: Working Temperature and Humidity
-
Storage Temperature and Humidity: -10~60°C; below 70%rh
-
Insulation strength: AC 2000V/rms (The two ends of the coil
after unlocking and unfolding) -
Suitable Safety Standard: CAT IV 600V, CAT 1000V
Product Usage Instructions:
1. Introduction:
The ETCR-FA-FB Series Flexible Coil Current Sensor is designed
for detecting various types of currents and waveforms. It offers
precise measurements and is suitable for a range of
applications.
2. Model Category:
The product is available in various models with different coil
circle diameters, lengths, and weights. Choose the model that best
suits your requirements.
3. Technical Specification:
Ensure you understand the technical specifications of the
sensor, including its function, testing method, range, resolution,
and safety standards before use.
4. The Principle And Structure:
Get familiar with the components of the sensor including the
coil, trigger, output lead, and handle. Understanding the structure
will help in efficient usage.
FAQ:
Q: Can the coil length and interface be customized?
A: Yes, the coil length and interface can be customized
according to specific requests.
Q: What is the suitable safety standard for the product?
A: The product complies with CAT IV 600V and CAT 1000V safety
standards.
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ETCR-FA-FB Series Flexible Coil Current Sensor
Manual
Precautions For Use:
Thanks for your purchase of ETCR series flexible coil current sensor
(alternate name: flexible coil, Rogowski Coil, flexible coil current sensor)of
our company. In order to better use this product, please be sure to read this
user manual in detail: —Read this user manual in details. — Comply by the
safety rules and precautions listed in this manual.
Under any circumstance, shall pay special attention on safety in using this
sensor. Pay attention to the text labeled on the panel and backplane of the
sensor. Keep the sensor clean, maintenance regularly and avoid random bending.
Stop using the sensor when there is rupture or break. Do not place and store
the meter in high temperature and humidity or dewy places and under direct
sunlight for a long time. Use, disassembly and maintenance of this leakage
current meter shall hand by authorized personnel. In case dangers would occur
if continue to use a faulty leaker, please stop to use it and seal it for
safekeeping immediately; and then, send it for disposal of authorized agency.
The meter manual with the danger mark ” “, users must follow instructions to
operate safely.
1. Introduction
ETCR series flexible coil current sensor is composed of coil and handle. The
coil hasn`t any bare metal conductor, no-contact measurement, safe and
reliable. It is small in size, light in weight, exquisite in appearance, soft
and flexible, suitable for narrow environment and flat cable dense place. The
measurement range is wide, high accuracy, strong reliability and wide response
frequency band (0.1 Hz-1 MHz). Users can customize the coil length according
to the request. Widely used in electric power, communications, meteorology,
railway, oil field, construction, measurement, scientific research and
teaching units, industrial and mining enterprises and other fields. Especially
suitable for the flat cable dense place, current test of transformer grounding
core , thick wire and cable, relay protection, silicon controlled rectifier,
frequency conversion speed regulation, semiconductor switch, power electronic
conversion equipment, arc welding and other industrial environment with
serious signal distortion.
ETCR series flexible coil current sensor, which is Rogowski coil, adopts
advanced Rogowski Coil technology, which is a loop coil uniformly wound on
non-ferromagnetic materials, with no hysteresis effect, almost zero phase
error, no magnetic saturation, high linearity and strong anti-interference
ability. The output signal is the differential of the current with respect to
time. By integrating the output voltage signal, the input current can be truly
restored. The measured current ranges from milliamperes up to ten thousands of
amperes. It is mainly used for the detection of AC leakage current, large
current, higher harmonic current (up to 400 times), complex waveform current,
transient impulse current, phase, electric energy, power and power factor.
With integrator, it is easy to integrate into other equipment, such as phase
detection analyzer, industrial control device, data recorder, oscilloscope,
harmonic analyzer, power quality analyzer, high-precision digital multimeter,
transient impact recorder, distributed measurement system, protection system,
etc.
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2. Model Category
Product Photo
Model ETCR50FA
Coil Circle Diameter
50mm
Coil Length Coil Weight
160mm
80g
ETCR100FA
100mm
320mm
90g
ETCR150FA
150mm
480mm
100g
ETCR200FA
200mm
640mm
110g
ETCR300FA
300mm
950mm
132g
ETCR500FA
500mm
1580mm
170g
ETCR1000FA 1000mm
3150mm
290g
ETCR1500FA 1500mm
4720mm
390g
ETCR200FB
200mm
640mm
212g
ETCR300FB
300mm
950mm
274g
ETCR500FB
500mm
1580mm
400g
ETCR1000FB 1000mm
3150mm
715g
ETCR2000FB 2000mm
6290mm
1340g
ETCR3000FB 3000mm
9420mm
Note: Coil length and interface can be customized according to request.
1970g
Coil Diameter 7.5mm 12mm
3. Technical Specification
Function Testing method
Detecting of AC leakage current, AC big current, high harmonic currents,
complex Waveforms current, inrush transient current, Phase, electric energy,
power, power factor.
Flexible CT: The output signal is the derivative of the current with respect
to time, The input current can be truly restored by integrating the output
voltage signal
Coil diameter 7.5mm/12mm (optional)
Range
10mA10000ALarge
Resolution 10mA
Accuracy Class ±0.1%FS (50Hz/60Hz; 23±2, Below 70%RH, cable in the center of the coil)
Phase Error 0.1°(50Hz/60Hz; 23±2)
Output Interface
Electric field interference
Wire Position
Current Frequency Response Frequency
Line Voltage
Working Temperature and Humidity
Storage Temperature and Humidity
Insulation
3.5mm audio plug/ BNC plug/ pigtail (optional), wire length: 2M No hysteresis
effect, No electric interfering field The tested wire is at the center of the
coil, position error influence ± 0.3% FS 45Hz~70Hz(The tested current
frequency) 0.1Hz~1MHz Below AC 1000V line test -20~50; below 80%rh
-10~60; below 70%rh AC 2000V/rms (The two ends of the coil after unlocking and unfolding)
2
strength
Suitable Safety Standard
CAT IV 600V CAT 1000V
4. The Principle And Structure
The theoretical basis of Rogowski coil measure current is Faraday’s law of
electromagnetic induction and ampere circuit law. When the measured current I
passes through the center of Rogowski coil along the axis, it generates a
corresponding magnetic field within the volume surrounded by the ring winding,
whose intensity is H. According to the ampere circuit law, it is made as
follows: H·dl=I(t). The induction voltage of the coil is proportional to the
change rate of H, so the sum of the induced potentials of all the coils is
proportional to the rate of change of the current. In other words, e(t)=di/dt,
and the integral of output voltage e(t) can get I. Therefore, Rogowski coil is
generally used with integrator.
4.1. Coil pigtail output 4.2. Coil pigtail output 4.3. Lead shield layer 4.4. Audio plug
4.5. Output lead
4.6.Coil
4.7.Handle
4.8.Trigger
4.1. Coil pigtail output 4.2. Coil pigtail output 4.3. Lead shield layer 4.4. Output lead
4.5. Flexible Coil
4.6.Lock catch
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The company is not responsible for other losses caused by use. The contents of this user manual cannot be used as a reason to use the product for special purposes. The company reserves the right to modify the contents of the user manual. If there are any changes, no further notice will be given.
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