To understand a door technology, it is necessary to understand its terminology. There are many terms in the field of high-voltage electrical appliances, and there are twelve common ones.
1. Rated voltage - The highest voltage that can be continuously operated under specified conditions of use and performance, and used to determine the relevant test conditions for high voltage switchgear.
2. Rated current - The current value that the main circuit of the high voltage switchgear can continuously carry under the specified normal use and performance conditions.
3. Rated frequency—The value of the grid frequency that can be continuously operated under the specified normal use and performance conditions, and the relevant test conditions for the high-voltage switchgear are determined by it and the rated voltage and rated current.
4. Rated current breaking current - Under the specified conditions, the circuit breaker can guarantee the maximum short-circuit current of normal breaking.
5. Rated short-circuit closing current - The maximum short-circuit peak current of the switch to ensure normal breaking under rated voltage and specified usage and performance conditions.
6. Rated short-time withstand current (rated thermal stabilizing current) - The rms current of the specified current that the switch can carry in the closed position within a defined short period of time under specified conditions of use and performance.
7. Rated peak withstand current (rated thermal stabilizing current) - The peak current of the first large half-wave of the rated short-time withstand current that the switch can withstand in the closed position under specified conditions of use and performance.
8. Rated short-circuit duration (rated dynamic settling time) - The time interval during which the switch can carry the rated short-time withstand current in the combined position.
9. Temperature rise - the difference between the temperature of each part of the switchgear when passing current and the ambient air temperature.
10. Power factor (loop) - The equivalent circuit of the switchgear test circuit, the ratio of resistance to inductive reactance at the power frequency, excluding the impedance of the load.
11. Rated short-duration power frequency withstand voltage - the standard value (effective value) of the power frequency voltage that the equipment is tolerated when tested according to the specified conditions and time.
12. Rated operation (lightning) impulse withstand voltage - the standard value of the surge voltage of the operation (lightning) that the equipment insulation can withstand during the withstand voltage test.
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Label: Characteristic parameter term for high voltage electrical appliances
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