SMGQ1-100/255M Dual Power Automatic Transfer Switch Series

Detailed introduction：

Scope of application

Molded Case Double Power Supply Series Automatic Power Switching Switch Hereinafter referred to as the switch for AC 50Hz. Rated operating voltage 380V, rated working current (end type 10A-800A) Dual power supply system, with automatic or manual operation to complete the switch between the common power supply and standby power. The switch is mainly used for hospitals, shops, banks, chemical industry, metallurgy, high-rise, construction, military facilities and other important occasions.

Model and meaning

basic structure

The series of automatic switch is mainly composed of the power conversion circuit breaker and controller, there are three states for the user to choose: common power (N), double (manual), standby power (R) units, switches With a small size, light weight, stable, easy to use.

Normal operating conditions

1, the installation of the altitude should not exceed 2000m.

2, the ambient temperature limit is not higher than +40 ℃, the lower limit of not less than -5 ℃, 24-hour average of not more than +35 ℃.

3, the relative humidity in the ambient air temperature is +40 ℃ not more than 50%, at a lower temperature, you can have a higher humidity. Taking into account the temperature changes will occur on the product surface condensation.

4, no explosion hazard medium, and the media is not enough to corrode and destroy the insulation of the gas and dust.

5, no significant shaking and shock vibration of the place

working principle

The series of dual-power controller and drive mechanism are AC220V power supply, the power signal depends on the switch or standby switch port A line and N line. Dual power supply is in automatic state, when the common switch into the line A phase and N line voltage is normal (AC190-240V). Regardless of the common power supply B, C phase and standby switch A, B, C, N phase voltage is normal, the switch will normally switch priority. At this point the power indicator light and the common close indicator light. When the common switch into line A phase and N line without voltage, while the standby switch into the line A phase and N line voltage is normal, regardless of regular, standby switch B, C phase voltage is normal, dual power supply will switch to standby close. At this point the power indicator and standby switch on indicator light. Manual function, regardless of common power and standby power supply voltage, can be used manually. Manual operation, the manual - automatic button should be placed in the manual operation position, when the push handle clockwise to the terminal, the standby power circuit breaker R opening. Common power circuit breaker N closing: When pushing the handle counterclockwise rotation to the terminal, the standby power circuit breaker R closed, commonly used power circuit breaker N sub-gate. (End-type manual, insert the special handle. Rotate in the appropriate direction)

Installation and usage

Installation before use. First check the appearance of dual power products, in the transport process for damage. If damaged. Should be promptly contact with the dealer. When wiring, please use the common and standby power three-phase four-wire, access to commonly used and standby circuit breakers into the line side. And then the two circuit breakers corresponding to the parallel load for use. If the dual power supply is three-pole, you must connect the common zero line and the spare zero line to the dedicated terminal. Otherwise, the dual power supply will not work. (Note: in the installation process, do not put the original line in the circuit breaker into the signal line to forget, short circuit or open circuit.)

Wiring