ABB HiPerGuard MV UPS User Manual page 17

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Safety labels are attached to the enclosures to alert personnel of potential hazards when working on the equip-
ment. The instructions on the safety labels must always be followed, and the labels must be kept in a perfectly
legible condition.
DANGER – Arc flash
Arc flash is a dangerous phenomenon associated with operation at medium voltages. It may be
caused by switchgear failure, insulation breakdown or foreign object intrusion. It may result in se-
vere burns, severe eye injury, blindness, or death. To minimize the risk, keep all doors closed and cov-
ers in place while operating the equipment. Observe any arc flash protection boundaries that may be
in place around the MVM and Medium Voltage Switchgear enclosures.
DANGER – Potential material hazard of batteries and capacitors
If a battery or capacitor is damaged electrically or physically, the resulting debris could represent a
material hazard. Refer to the appropriate Material Safety Data Sheet for information on safe han-
dling and disposal.