Use position: As the name implies, it is the application position of the connector on different high-voltage electrical appliances of the whole vehicle, and the connector is selected.
●Rated voltage: The maximum voltage that electrical equipment (including electricity and power supply equipment) can work stably for a long time.
The rated voltage is proportional to the creepage distance & clearance.
In other words, the higher the rated voltage requirement, the larger, or longer, the connector. Creepage distance & clearance design standard according to GBT 16935.1 (IEC 60664-1),
●Rated current: The rated current of electrical equipment refers to the maximum current that is allowed to pass for a long time when the heat generation does not exceed the allowable temperature for long-term heat generation at the reference ambient temperature and under the working conditions of rated voltage.
For electric vehicles, P=UI, the rated current is determined according to the power P of the electrical equipment and the output voltage U.
Peak current: The maximum current value generated by the electric vehicle at the moment of rapid acceleration, climbing, and overloading.
The current-carrying cross-sectional area is proportional to the rated current of the connector, in other words, the larger the pin/hole/conductor cross-section, the more current it can pass, and the larger the connector.