Automatic Air Switch for Guangxi Yuchai Diesel Generator Set

The automatic air switch, also known as an automatic circuit breaker, is a crucial electrical control component in the composition of Guangxi Yuchai diesel generator sets. It integrates control and multiple protection functions.

The automatic air switch mainly provides protection in cases of severe circuit overload, short circuit, and undervoltage, preventing the generator set from being damaged due to overload and short circuit. The automatic air switch from Dingbo Power has advantages such as safe operation, high breaking capacity, multiple protection functions, and adjustable action. Moreover, in the event of a short - circuit fault, generally no components need to be replaced when troubleshooting, so it is widely used.

How to Select Automatic Air Switch for Guangxi Yuchai Diesel Generator Set

1.Correctly select the rated current of the release. For example, if the matched generator is 30kW and the stator rated current is 54.1A, the rated current of the selected release should be 60A, making it as close as possible to and slightly larger than the stator rated current. If the selected current is too large (such as 80A), if the generator is overloaded for a long time, the thermal release will not act, and the automatic air switch will not play an overload protection role. Conversely, if the rated current of the release is 40A, the release will act when the generator operates at rated load for about 1 hour, causing the automatic air switch to trip and resulting in an erroneous power outage.

Note: The function of the release is that when there is leakage in the line or personal electric shock, the vector sum of the current passing through the zero - sequence current transformer is not zero, and a voltage is generated on both sides of the secondary coil of the transformer, which is amplified by the integrated circuit. When the set value is reached, the power is cut off within 0.1 seconds through the leakage release, thereby playing a role in electric shock and leakage protection.

Rated current is the current at which an electrical appliance operates under rated voltage.

2. Correctly select the instantaneous action rated current. The instantaneous action rated current is selected based on the short - circuit calculation results, and its setting value is best set by the switch manufacturer. The instantaneous action overcurrent release of low - voltage circuit breakers is used for short - circuit protection, and the adjustment range of its action current is mostly 4 - 10 times the rated current.

The automatic air switch has advantages such as safe operation, convenient use, reliable work, simple installation, and no need to replace components (such as fuses) after action (such as after exclude of short - circuit faults). Therefore, it is widely used in industrial, residential and other fields.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. is an early professional manufacturer of generators and diesel generator sets in China. The company has first-class national-level large-scale production and load testing equipment. Provide users with long-term diesel generator set sales, leasing, technical consultation, commissioning, maintenance, training services and generator set trusteeship business. If you would like to get more information welcome to contact us via [email protected].