Normal working and installation conditions

The upper limit of the ambient temperature shall not exceed+40 ℃, the lower limit shall not be lower than -5 ℃, and the 24-hour average value shall not exceed+35 ℃.
Does the relative humidity of the atmosphere not exceed 50% when the surrounding air temperature is+40 ℃? At lower temperatures, there can be higher humidity, and it should be considered that changes in humidity can cause condensation on the surface of the product
Dew.
◆ No explosive medium, and no gas or dust sufficient to corrode and damage insulation.
Places without significant shaking or impact vibration.
The installation altitude shall not exceed 2000 meters.
Basic structure
The automatic power switch is mainly composed of a power conversion actuator circuit breaker. The switch operates in three states for users to choose from: common power (N) on, double open, backup power (R) on, and on
Guan has the advantages of small size, light weight, stable operation, and convenient use.
◆ Installation and usage methods
When wiring, the common power supply N should be connected to the common power supply actuator circuit breaker QN. The backup power supply R should be connected to the backup power supply actuator circuit breaker QR. When QN and QR are four wire circuit breakers, the wiring method is as follows
Wiring diagram, where 1, 3, and 5 of QN and QR are the three-phase (A, B, C) incoming terminals, 2, 4, and 6 are the three-phase outgoing terminals, 7 is the zero (N) incoming terminal, and 8 is the zero outgoing terminal. If a circuit breaker is selected
For a three pole circuit breaker, the neutral wire NN of the common power supply (N) and the neutral wire NR of the backup power supply (R) must be connected to the dedicated neutral wire terminal KG for the three poles simultaneously. Please refer to the wiring diagram for specific operations. Dual electric
The working power of the source switching switch automatic controller is taken from the incoming terminals A of circuit breakers QN and QR and the neutral line N. If a three-pole circuit breaker is selected, the neutral lines NN and NR must be connected
The zero terminal of the three pole dedicated wiring is located between two circuit breakers, and is installed on the automatic power switch. During the wiring process, do not forget the local controller wire originally connected to the incoming end of the circuit breaker
Falling, breaking or short circuiting, etc.

◆ Usage and operation
Regardless of whether the commonly used power supply and backup power supply have voltage, manual operation can be used. When manually operating, the manual and automatic buttons should be placed in the manual operation position, and when the handle is pushed clockwise
When the needle rotates to the terminal, the standby power supply executes circuit breaker QR to open, and the common power supply executes circuit breaker QN to close; When the handle is pushed counterclockwise to the terminal, the backup power supply executes the circuit breaker
QR closing, commonly used power supply execution circuit breaker QN opening.
In the panel, the power indicator light (red) is on. If the light is not on, it indicates that there is a malfunction in the working power supply of the automatic control box and the switch cannot be operated. After the repair is normal, place the manual and automatic buttons on the
Automatic position status, if the common power supply is normal, the switching switch will automatically switch to the common power supply to execute the QN closing state of the circuit breaker, and the N power indicator light (yellow) on the panel will be on; If often
If the power supply is abnormal, the switch will automatically switch to the backup power supply QR for power supply, and the backup power supply R indicator light (green) will light up.