CR4220S-40

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Current transducers are electrical components that have the purpose of measuring and monitoring current in a trip-less, safe and reliable way, as well as to isolate current and voltage sources. CR4220S-40 current transducers are a type of transducers specifically designed for monitoring alternating current. They are known for their high accuracy, good linearity, fast response time and compliance with the IEC 61850-3 standard.The CR4220S-40 current transducer is designed for the measurement of alternating current in the range of 10A to 60A. It has a frequency range of 40Hz to 500Hz and a current measurement accuracy of ±0.3% of reading at 50% load. It is capable of withstanding short-term overloads up to 10 times the nominal current. This type of current transducer is suitable for applications such as power supply monitoring, energy usage measurement, safety monitoring, load control and motor current monitoring.The CR4220S-40 current transducer works on the principle of an inductive transformer. Inside the transducer is a primary winding and a secondary winding. The primary winding is supplied with an alternating current and the secondary winding generates an output current proportional to the primary current. The magnitude of the output current is determined by the turns ratio of the transformer. The output current is measured with the help of a current-sensing resistor.The CR4220S-40 current transducer is designed to measure the current in safety critical applications. It has a galvanic isolation of 4000VAC and is designed to comply with safety requirements such as the IEC 61850-3 standard. It is also designed to withstand high temperatures, vibrations and electromagnetic interference to ensure high durability and reliability.The current transducer is made up of a number of components including a primary winding, a secondary winding, a current-sensing resistor, a copper core, a ferrite core and a jacket. The primary and secondary windings are arranged in a three-phase configuration to provide the required isolation. The primary winding is placed in the signal strand and the secondary winding is placed in the output strand. The current-sensing resistor and the copper core are used for measuring the output current. The ferrite core is used for impedance matching and the jacket provides the required insulation and weatherproofing.To ensure high accuracy that the CR4220S-40 current transducer offers, good practice involves calibrating the transducer periodically. This process is necessary to ensure that the transducer is performing to its optimum capability.In conclusion, the CR4220S-40 current transducer is a reliable, accurate and safe device designed for measuring current in the range of 10A to 60A. It complies with the safety requirements of the IEC 61850-3 standard and is designed to withstand high temperatures, vibrations and electromagnetic interference. The calibration of the device is also important to ensure the accuracy and reliability of the measurement.

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