Electrical Instruments

Under the favorable promotion of various policies, the construction of electric vehicle charging stations (piles) will usher in the peak. However, the product quality, interface compatibility, and other safety issues of charging facilities have an impact on the charging of electric vehicles. Therefore, acceptance test of charging stations (pile) is very necessary.
Detection of electric vehicle chargers is an indispens-able part of the charging station (pile) acceptance test. The high-precision current transducer provides a measurement reference solution for the charging pile verification device, meets a number of standard
requirements, and satisfies various applications, such as the site acceptance of electric vehicle charging stations, charging pile product type test, charging station safety routine annual inspection, measure-
ment calibration test and so on.

As one of the key indicators of the charging pile verification device, the required DC current mea-surement accuracy is 0.05% RD which cannot be realized by the traditional current transducers.

It is particularly important to note that the following key parameters must be met when using current transducers:
· 1ppm non-linear error
· -40 – 85°C operating temperature range
· <0.1 ppm / K temperature drift
· Very high time stability
· Up to 500A peak current
· 3dB bandwidth above 400KHz