Wallbox Meets the New Version of SEK Handbook 444 in SwedenEnsuring Compliance and Safety
As of May 9, 2024, new regulatory requirements have been enforced in Sweden to address the need for increased safety in electric vehicle charging stations, particularly focusing on residual direct currents (DC). At Wallbox, we have taken proactive measures to ensure our products adhere to the highest safety standards, providing our customers with a reliable level of protection.
Understanding When and Why IEC 62955 is Required
IEC 62955 is a standard for devices that detect and protect against DC fault currents above 6mA in mode 3 EV charging stations.
Clause 722.531.2.3.4.101 of SEK Handbook 444 outlines that If you are installing an EV charging station and using certain types of safety devices (type A or type F), you need an additional protection device (RDC-DD) as stated in IEC 62955. This is necessary because type A and type F RCDs can stop working properly if exposed to too much DC current, a problem known as “blinding.” Blinding results in a loss of the protective functions that those devices are designed to offer.
Even though type A and type F RCDs are tested to handle DC currents up to 6mA, EV chargers can sometimes produce higher DC currents. If this happens, these RCDs might fail. To prevent this, regulations require that the system disconnects the load if DC faults above 6mA occur.
Type B RCDs do not suffer from the blinding issue. Therefore, if a type B RCD is used, an RDC-DD compliant with IEC 62955 is not needed to handle DC fault currents above 6mA.
Solutions with Wallbox Products
Pulsar Max and Pro: To comply with clause 722.531.2.3.4.101 of SEK Handbook 444, Pulsar Max and Pulsar Pro must be protected with an external RCCB Type B or Type EV (Type A + RDC-DD IEC 62955). Wallbox will provide a bundled solution with the possibility to buy the charger along with a compliant RCBO Type B (RCCB Type B + MCB).
eM4: The eM4 charger integrates an RCCB Type A + RDC-DD in accordance with IEC 62955. Consequently, this product fully complies with Clause 722.531.2.3.4.101 of SEK Handbook 444 without the need to incorporate any additional device.
For eM4 single configurations, the above-mentioned RCCB is an RCD.
For eM4 twin configurations, the above-mentioned RCCB can be an RCD Type A or RCBO Type A (RCD + MCB), as selected by the client.
Looking Ahead
Wallbox is committed to continuously improving our products to meet evolving standards and provide reliable levels of safety and performance. We will keep monitoring regulatory changes and update our solutions accordingly to provide our customers with state-of-the-art technology that meets all safety requirements.
Join the Conversation
We invite you to share your thoughts, questions, or feedback about these new standards and how Wallbox products are adapting to meet them. Connect with us on our social media channels or send us an email.
Disclaimer
This article provides a general overview of the regulatory requirements and Wallbox’s compliance measures. For specific technical advice and detailed installation guidelines, please refer to the official documentation or consult with a certified professional.
Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements contained in this press release other than statements of historical fact should be considered forward-looking statements, including, without limitation, statements regarding the private placement. The words “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “forecast,” “intend,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “”target,” will,” “would” and similar expressions are intended to identify forward-looking statements, though not all forward-looking statements use these words or expressions. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to: Wallbox’s history of operating losses as an early stage company; the adoption and demand for electric vehicles including the success of alternative fuels, changes to rebates, tax credits and the impact of government incentives; Wallbox’s ability to successfully manage its growth; the accuracy of Wallbox’s forecasts and projections including those regarding its market opportunity; competition; risks related to health pandemics including those of COVID-19; losses or disruptions in Wallbox’s supply or manufacturing partners; impacts resulting from the conflict between Russia and Ukraine; risks related to macro-economic conditions and inflation; Wallbox’s reliance on the third-parties outside of its control; risks related to Wallbox’s technology, intellectual property and infrastructure; as well as the other important factors discussed and incorporated by reference under the heading “Risk Factors” in Wallbox’s Annual Report on Form 20-F for the fiscal year ended December 31, 2022, and as such factors may be updated from time to time in its other filings with the Securities and Exchange Commission (the “SEC”), accessible on the SEC’s website at www.sec.gov and the Investors Relations section of Wallbox’s website at investors.wallbox.com. Any such forward-looking statements represent management’s estimates as of the date of this press release. Any forward-looking statement that Wallbox makes in this press release speaks only as of the date of such statement. Except as required by law, Wallbox disclaims any obligation to update or revise, or to publicly announce any update or revision to, any of the forward-looking statements, whether as a result of new information, future events or otherwise.
