SDV-FH6T AC100/110V

Introduction

SDV-FH6T AC100/110V application field and working principle is a monitoring device for current and voltage with relay output. It can simultaneously detect multiple electrical parameters such as two-phase current, single-phase current, two-phase voltage, and single-phase voltage and has various protection functions such as phase failure, phase sequence reversal, over-current/under-current, over-voltage/under-voltage, and over-load delay.

Design of the SDV-FH6T AC100/110V

The design of the SDV-FH6T AC100/110V monitoring device is quite simple. It consists of two parts – the sensing circuit and the control circuit.

The sensing circuit of the SDV-FH6T AC100/110V consists of current transformers, voltage transformers, and filters. The current transformers are used to sense the two-phase current and the single-phase current. The voltage transformers are used to sense the two-phase voltage and the single-phase voltage. The filters are used to reduce the noise. All the sensing signals are fed to the control circuit.

The control circuit of the SDV-FH6T AC100/110V consists of three main components – the CPU, the detection circuit, and the power circuit. The CPU is used to control the overall operation and communicate with external systems if needed. The detection circuit is used to detect various electrical parameters, such as two-phase current, single-phase current, two-phase voltage, and single-phase voltage. The power circuit is used to provide the necessary power to the CPU and the detection circuit.

Working Principle of the SDV-FH6T AC100/110V

The main purpose of the SDV-FH6T AC100/110V is to monitor current and voltage and detect any abnormalities. When it is first connected to the power source, the sensing circuit detects the two-phase current, single-phase current, two-phase voltage and single-phase voltage. All these values are then fed to the control circuit.

The control circuit then constantly monitors these values and compares them against the preset parameters. If any of the values exceed the preset parameters, the CPU will signal the detection circuit to send a signal to the relay. This signal will cause the relay to switch and trip the respective load.

At the same time, the CPU will also display the abnormal value on its LCD display. This display can be used for diagnostic purposes and to monitor the system.

Conclusion

The SDV-FH6T AC100/110V is a monitoring device for current and voltage with relay output. It utilizes current transformers, voltage transformers, and filters to detect two-phase current, single-phase current, two-phase voltage, and single-phase voltage. It also has various protection functions such as phase failure, phase sequence reversal, over-current/under-current, over-voltage/under-voltage, and over-load delay. The control circuit is used to monitor the electrical parameters and provide appropriate output to the relay when any of the values exceed the preset parameters.