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STP Splitter
Three in one STP splitter (Built-in integrator selectable)
The product description
STP with an selectable built-in integrator that outputs a three-way Rogowski coil signal through an RJ45 port or 8 Pin. Power supply 3.3 ~ 5V , 150mV, 333mV, 500mV, 1V, 1.5V, 3V AC output is optional.
Advantage
Portable mini, easy for installationl
Analog connection diagram
Specification
MODEL |
STP |
Rated output |
100A
600A
1000A
3000A
6000A
.... |
Rated output |
333mV AC |
Maximum Output(overload) |
3V rms |
Power supply |
3.3V-5V DC |
Power consumption |
≤20mW |
Bandwidth |
20Hz-2kHz |
Read Accuracy |
1% typical at 1%(≥10A) to 200% of rated Current @25ºC |
Linearity |
±0.2% (5% - 200% ) |
Phase error |
≤0.5° |
Minimum Current measurement |
0.5A (Ripple 100mA) |
Output on 0A (zero drift) |
≤2mV |
Temperature drift |
200ppm/ºC |
Operating temperature |
-20ºC - 70ºC |
Storage temperature |
-30ºC - 90ºC |
Relative humidity: |
80% max.without condensation |
Protection degree: |
IP20 |
Other requirements, please contact us to OEM. |
What is a Rogowski coil?
Rogowski coils have been used for the detection and measurement of electric currents for decades. They are based on a simple principle: an "air-cored" coil is placed around the conductor in a toroidal fashion and the magnetic field produced by the current induces a voltage in the coil. The voltage output is proportional to the rate of change of current. This voltage is integrated, thus producing an output proportional to the current.
By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors.Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.Rogowski coil current transducers are used for the AC measurement.
They can be used in similar circumstances to current transformers but for many applications they have considerable advantages:
• Wide dynamic range.
• High linearity.
• Very useful with large size or awkward shaped conductors or in places with limited access. Thanks to the structure without hard core, the coil can be easily manufactured according to the application or to the available space.
• Unlike traditional current transducers, there is no danger from open-circuited secondaries.
• They cannot be damaged by large overloads.
• They are non-intrusive. They draw no power from the main circuit carrying the current to be measured.
• They are also light weighted and in some applications are light enough to be suspended on the conductor being measured.
The transducer does not measure direct currents but, unlike a current transformer, it can carry out accurate measurements of AC component even if there is a large superimposed DC component, since there is no iron core causing saturation. This feature is particularly useful for measuring ripple currents for example in battery charging systems.