Overview:

With the development of society, users have higher and higher requirements for power supply reliability. Many fields share two power supplies to ensure the reliability of power supply, which requires a product to reliably and safely switch between the two power supplies. The ZW32-12G dual-power backup auto-switching device produced by Dongkai Electric Co., Ltd. is developed and designed to meet this demand. ZW32-12GG double-power automatic transfer device is composed of a single high-voltage vacuum circuit breaker and a double-side isolating switch. It is applied to the dual power supply system with AC 50 Hz, rated voltage 12 KV and rated current up to 1250A. When one power supply is powered off or under voltage, the electric isolation automatically switches to the other normal power supply to ensure the continuity of power supply reliably. At the same time, it has protection interlock functions such as short circuit and overcurrent, which effectively avoids unnecessary power supply impact in case of load failure. In case of failure of the common power supply, the electric isolation and switching device can complete the automatic switching with the standby power supply to ensure reliability and safety. You can also select and switch between two power supplies according to the needs of the load. It is especially suitable for important places where power failure is not allowed. As an important electrical control device to ensure continuous power supply, it is an electric double-circuit power switching device matched with high-voltage vacuum circuit breaker. The electric automatic switching product of two-way power supply with novel design, perfect performance, safety and reliability, high degree of automation and wide range of use.

The product is widely used in 10kV power distribution lines in oil fields and mines, and 10kV lines in industrial and mining enterprises.

Normal use environment

◆ The upper limit value of ambient air temperature shall not exceed+40C, the lower limit value shall not exceed - 25C, and the average temperature value within 24 hours shall not exceed+35 ° C.

◆ The altitude of the installation site is applicable to 3800m.

◆ The relative humidity of the atmosphere shall not exceed 50% when the ambient air temperature is+40 ° C, and there can be higher humidity at lower temperatures;

When the monthly average lower limit temperature of the wet month is - 25C, the average upper limit relative humidity is 90%, taking into account the condensation on the product surface due to humidity changes.

◆ The pollution level is Grade III.

◆ The operation site shall be free of strong vibration and impact, corrosive metals and harmful gases that damage insulation, serious dust, conductive particles and explosive dangerous substances.