Uninterruptible Power Supply (UPS) systems and power conditioning equipment were registered under IS 13252 and must migrate to IS/IEC 62368-1:2023 by November 2028.
UPS systems above 240VA are PS3 power sources under IS/IEC 62368-1:2023. For a typical 1kVA or 2kVA UPS, PS3 safeguard requirements apply — including greater creepage and clearance distances, more stringent insulation requirements, and detailed fault analysis documentation.
UPS systems incorporate sealed lead-acid (VRLA) or lithium battery banks. IS/IEC 62368-1:2023 has comprehensive battery safety requirements. For UPS with lithium batteries (increasingly common), the BMS, thermal management, and cell documentation requirements are thorough.
Online (double-conversion) UPS systems rectify mains AC to DC (typically 380V-700V DC) and then invert back to AC. This internal high-voltage DC bus requires careful IS/IEC 62368-1:2023 evaluation — insulation between the HV DC bus and accessible external surfaces.
UPS bypass circuits allow direct mains connection when UPS is serviced or overloaded. The bypass interlock must prevent energizing the mains when the battery/inverter circuit is accessible for service.
UPS manufacturers with large product portfolios should start IS/IEC 62368-1:2023 migration immediately. PS3-class products require more documentation and lab time than standard consumer electronics. Typical migration: 8-14 weeks per UPS platform. House of Testing handles IS 62368 UPS testing.