Some professional terms related to low-voltage electrical appliances that you are not familiar with

Under the background of "Made in China 2025", the development of the low-voltage electrical industry has identified new technologies and directions. National low-voltage electrical manufacturing enterprises are facing technological transformation and upgrading, further enhancing the international competitiveness of domestic low-voltage electrical enterprises. Faced with such a strong development trend, how many power professionals are proficient in the professional terminology of low-voltage electrical appliances as a major contributor to power supply?

Professional terminology for low-voltage electrical appliances

On-off time: the time interval from the moment the current starts flowing through one pole of the switchgear to the moment when the arc of all poles is finally extinguished.

Arc ignition time: The time interval from the moment the contact is disconnected (or the melt melts) and an arc occurs during the process of electrical disconnection, until the arc is completely extinguished.

Breaking capacity: The expected breaking current value that a switch can break at a given voltage under specified conditions.

Connection capability: The expected current value at which a switching device can be connected at a given voltage under specified conditions.

On/off capability: The expected current value at which a switchgear can be turned on and off at a given voltage under specified conditions.

Short circuit connection capability: The ability to make connections, including short circuits at the output terminals of switchgear, under specified conditions.

Short circuit breaking capacity: The breaking capacity, including the short circuit at the output terminal of the switchgear, under specified conditions.

Operating frequency: The maximum number of cycles of operation that a switching device can achieve per hour.

Power on duration: The ratio of the on load time to the operating cycle of an electrical appliance, often expressed as a percentage.

Electrical lifespan: The number of load operation cycles of the filtering compensation device that does not require repair or replacement of parts for mechanical switchgear under specified normal working conditions.