Background:

A concerned customer reached out to us after experiencing a disconcerting electric shock while using a charger. Fearing for their safety, they sought our expertise to uncover the root cause of the issue. Recognizing the gravity of the situation, our team promptly organized a site visit to troubleshoot the issue firsthand.

Initial Assessment:

Our thorough investigation revealed a crucial factor contributing to the customer’s concern – the use of a Type AC Residual Current Circuit Breaker (RCCB). While efficient in detecting alternating current (AC) imbalances, this type of RCCB lacked the capability to detect pulsating residual direct current (DC), which was causing the unsettling sensation the customer experienced.

REx Solution:

To address the issue at its core, our team proposed a strategic solution – upgrading the RCCB to a Type A, which aligns with the Suruhanjaya Tenaga (Energy Commission) GUIDE ON ELECTRIC VEHICLE CHARGING SYSTEM (EVCS)’s minimum safety requirements. This upgraded RCCB possesses the ability to accurately detect pulsating DC imbalances, providing a higher level of safety and protection. We presented this solution to the customer, emphasizing the importance of proactive safety measures.