Application

ZMQ2E Twin power auto transfer switch (hereinafter called ATS), is suitable for operating in the power system of AC50Hz, rated operating voltage 400V, rated current 63A and below, to perform the shift between two power supply according to the requirement. The product has the protection functions of overload, short circuit, under-voltage and etc, meanwhile provides firefighting, dual OFF and output the signal of closing. It is especially suitable for the illuminating circuits of commercial building, marketplace, bank, high buildings where need firefighting function.

Normal working condition

Altitude: not higher than 2000m for the installation site.

When  the ambient air temperature is -5℃-+40℃, themean value is no greater than+35℃ with in 24 hours.  

   Relative humidity not exceed 50% at the max temperature of +40℃, higher relative

humidityisallowableunderlower temperature. For example, RH could be 90% at +20℃, while special measures shall be taken for the condensation occasionally produced due to temperature change. 

   Pollution degree: 3

   Mounting conditions: it shall be mounted on the place where has no impact, vibration, no access of snow and rain, upper terminal connected to power source, downside terminal connected to load side, the vertical sloping angle shall not exceed 5°

   Installation category: IIIThe outer magnetic field around the mounting site shall not exceed 5 times of earth field

Structure & Working theory

StructureZMQ2E Twin power auto transfer switch consists of two pieces of miniature circuit breaker, motor, controller, and driving mechanism. The ATS has three positions for user choice, normal power ON, dual OFF, standby power ON.High breaking miniature circuit breaker is used, same performances.Simple structure, practical, easy operation, no noise, small impact, long service life and etc.Working theoryThe controller of ATS will detect two loops of power supply, when one loop has fault, controller will give a logic decision and send a command of closing and opening the related miniature circuit, to ensure the safe and reliable power supply

Model