Answer: When wiring the dual power automatic transfer switch, it is necessary to connect the common power supply and the standby power supply to the corresponding terminal of the switch, and then connect the load circuit and the control circuit. Make sure the wiring is correct before you can perform the power-on test.
I. Introduction. Dual-power automatic transfer switch is an electrical equipment that can automatically switch between common power supply and standby power supply, and is widely used in various occasions that require uninterrupted power supply. This article will introduce in detail the wiring methods and steps of the dual power automatic transfer switch to help readers better understand and master this technology.
2. Preparation before wiring.
Before wiring the dual-power automatic transfer switch, the following preparations need to be made:
Be familiar with the circuit principle and wiring diagram of the switch, and understand the function and connection mode of each terminal.
Prepare the required tools and materials, such as screwdrivers, wire strippers, insulating tape, etc.
Make sure the power supply is cut off and check the switches and circuits for short or open circuits.
Third, wiring methods and steps.
Connect the live wire (L) of the common power supply to the L1 terminal of the switch, and the neutral wire (N) to the N1 terminal of the switch. Make sure the wiring is secure and reliable, and wrap the exposed copper wire with insulating tape.
Connect the live wire (L) of the standby power supply to the L2 terminal of the switch, and the neutral wire (N) to the N2 terminal of the switch. Again, make sure the wiring is strong and reliable, and wrap the exposed copper wire with insulating tape.
Connect the load circuit. Connect the live wire of the load to the L0 terminal of the switch, and the neutral wire to the N0 terminal of the switch. The load can be an electric motor, lighting fixture, or other electrical equipment.
Connect the control circuit. According to the actual needs, the connection wire of the control circuit is connected to the corresponding terminal of the switch. The control circuit can be the microprocessor control circuit that comes with the automatic transfer switch, or it can be an external control circuit.
Check that the wiring is correct. Check whether each terminal is wired correctly against the wiring diagram to ensure that there are no wrong connections or missed connections.
Perform a power-on test. After ensuring that the wiring is correct, the power-on test can be carried out. Connect the usual power supply first, and observe whether the switch works normally; Then cut off the common power supply, turn on the backup power supply, and observe whether the switch can be switched automatically. If there is an abnormality during the test, the power should be cut off immediately and the cause should be checked.
4. Precautions and FAQs.
Keep the power switch in a disconnected state during wiring to avoid electric shock accidents.
When wiring, it is necessary to ensure that the wiring of each terminal is firm and reliable, and avoid false connection or loosening.
When conducting the power-on test, it is necessary to closely observe the working status of the switch, and find and deal with abnormal situations in time.
If you encounter problems that cannot be solved during wiring or testing, it is recommended to contact a professional electrician or manufacturer for consultation and help.
V. Conclusions and prospects.
Through the above introduction and analysis, we can understand that the wiring method and steps of the dual power automatic transfer switch are not complicated, but some details and safety issues need to be paid attention to. It is of great significance to ensure the normal operation of electrical equipment and improve the reliability of power supply. In the future, with the continuous development of science and technology, the function and performance of dual-power automatic transfer switches will be further improved, providing more high-quality and reliable electrical solutions for all walks of life.
Bi-directional DC power supply