Overview

The HYET3 Dual-power (main and standby) Automatic Transfer Switching Equipment adopts electromagnetically driven and electromechanical interlocking mechanism. The main circuit contacts are of static and dynamic structures, and the moving contacts are of V-type design. 

To avoid long-term electrification of the electromagnetic coil, electric closing and mechanical holding are adopted. Therefore, the operating mechanism does not need to provide the working current under steady-state working conditions, which has a remarkable energy saving effect. The control power supply is from the AC 220 V main and standby power supplies (without additional control current). Due to its superior structural features, the main and standby power supplies will not be switched on at the same time, which ensures that the common and standby power supplies work reliably and do not interfere with each other. The switch has the electric or mechanical closing instruction, and it can also provide customers with normally open and normally closed passive contacts for other purposes.

The intelligent controller simultaneously provides many functions such as voltage loss, undervoltage, overvoltage, transfer delay control, generator signal control, and feedback signal, and has strong anti-interference ability. It has three transfer modes including automatic charge and automatic recovery, automatic charge without automatic recovery, and mutual standby.

The two-section switch has two stable working positions: common power supply closing, standby power supply opening; and common power supply opening and standby power supply closing.

The three-section switch has three stable working positions: common power supply closing, standby power supply opening; common power supply opening and standby power supply opening; and common power supply opening and standby power supply closing.

Simple and convenient installation. Manual transfer can be carried out with special handle in the manual state.

Normal working conditions

1. The ambient temperature shall be -5°C–+40°C; and the average temperature within 24 hours shall not exceed +35°C. The relative humidity at the highest temperature of +40°C shall not exceed 50%, and a higher relative humidity is allowed at a lower temperature. For example, 90% humidity at +20°C, but condensation may occur due to temperature change, which shall be considered.

2. The altitude of the installation location shall not exceed 2,000 m, and the category shall be Class IV.

3. The inclination shall not be more than ±23°C.

4. The contamination grade shall be Grade 3.

If the above conditions cannot be met, please consult the manufacturer when ordering.