For large power charging piles, the modular leakage current sensor can not meet the high-current passing through the primary bus. Because of the low requirement of the volume in the high-power pile, the B-type RCCB can be directly used for protection as shown in Figure 3.2.4., However, the cost of the current type B RCCB is relatively high, and the Type A/Type F+DC 6mA mode can also be temporarily used for protection as shown in Figure 3.2.5.
the ultimate protection method in the electric vehicle charging pile will strictly comply with Type B protection requirements.
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