Iec 6193612021 Link

All high-voltage enclosures must have a warning sign reading: “DANGER – HIGH VOLTAGE – KEEP OUT” in the local language plus the standard lightning bolt symbol.

The safety and reliability of high-voltage power systems are paramount for modern society. IEC 61936-1:2021 provides the "common rules" for the design and erection of electrical power installations, serving as the primary reference for engineers, utilities, and regulators. iec 6193612021 link

This standard applies to power installations with AC voltages above 1 kV up to 110 kV (with guidance applicable up to 220 kV and beyond). It replaced the 2014 edition (IEC 61936-1:2014), introducing necessary updates to reflect advancements in switchgear technology, insulation materials, and safety protocols. All high-voltage enclosures must have a warning sign

IEC 61936 is the international benchmark for Power installations exceeding 1 kV a.c. (alternating current) . It covers the design, erection, and operation of high-voltage electrical substations and power installations. This standard applies to power installations with AC