High-pressure sodium vapor lamps for open and enclosed luminaires. : No modifications to existing luminaire components required. : Streets. Outdoor lighting. Industrial installations. Luminaires that use mercury vapor lamps HQL® 80 W, 125 W, 250 W, 400 W. Suitable for use in open and enclosed luminaires. Outdoor applications only in suitable luminaires. : Control gear must be suitable for the higher operating current of the NAV® Plug-in lamps. The maximum permissible winding temperature as defined in VDE and IEC specifications must not be exceeded. In case of doubt, consult the manufacturer of the luminaire or control gear.. Do not stare at the operating light source: The luminaire should be positioned so that prolonged staring into the luminaire at a distance closer that 4 m is not expected.. Disconnect mains before installation.. Must not be used if outer bulb is defective.. Protect from spray water..