Error wiring detector for air conditioner

Abstract

Such a miswiring detection device for an air conditioner is obtained, which detects miswiring of the power supply wiring of the primary power supply of the air conditioner with a simple structure, and notifies whether there is miswiring through a display or an alarm sound, etc., so that troubles can be prevented. Equipped with: electrical signal detection device 18, which detects a wire (hereinafter referred to as N phase) on the ground side wire or neutral wire from the primary power supply (1), a voltage side in a single-phase three-wire 200V power supply, and the ground wire (below, abbreviated as E); and each electric signal between the voltage side wire or another wire other than the N phase of the voltage side in the single-phase three-wire 200V power supply (below, referred to as L phase), and E; the determination device 19. Based on the electric signal from the electric signal detection device 18, it is judged whether there is any wrong wiring of the power wiring connected to the power terminal board;

Description

technical field [0001] The present invention relates to an air conditioner miswiring detection device for avoiding miswiring of a power supply wiring connected to an air conditioner to obtain an air conditioner with improved safety. Background technique [0002] Figure 11 Shows the normal power supply wiring diagram of the existing air conditioner, 1 is the primary power supply for single-phase AC, 2 is the grounding resistance existing between the N phase of the primary power supply and the ground, 3 is the ground point, and 4 is the power supply from the primary power supply Wiring, 5 is the socket for the air conditioner, 6 is the plug of the air conditioner, 7 is the power cord of the air conditioner, 8 is the indoor unit of the air conditioner, 9 is the power terminal board of the indoor unit 8, and 10 is the control of the indoor unit 8 Substrate, 11 is the power wiring of the outdoor unit 12 of the air conditioner wired by the indoor unit 8, 12 is the outdoor unit of...

AI Technical Summary

Problems solved by technology

[0008] Since the existing air conditioner is constructed as above, it is necessary to confirm whether the indoor power supply wiring is correctly wired during the installation process. However, sometimes the air conditioner is connected without confirming whether the indoor power supply wiring is properly wired. PROBLEM: A short circuit occurs; and even if the automatic overcurrent circuit breaker is installed at the required point in the circuit in such a way that it can protect the electric wire and the electromechanical equipment from overheating caused by the overcurrent, the value of the breaking current of the automatic overcurrent circuit breaker does not affect the electric wire. If the rated current value is not appropriate, it may cause problems such as overheating of the wire due to overcurrent due to incorrect wiring.

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