High-pressure sodium lamp NAV-E 250 SUPER 4Y E40 4050300024387

High-pressure sodium lamp – efficient lighting for outdoor and industrial applications

This NAV-E 250 SUPER 4Y E40 high-pressure sodium lamp is a proven choice for street lighting, outdoor areas, and industrial installations. It is characterized by high luminous efficacy and long life, which translates into energy savings and less frequent replacement. It is a product of a renowned manufacturer, guaranteeing reliability and stable parameters.

Characteristics and application

The lamp is designed for use in open and closed luminaires, and its ellipsoidal bulb shape (ED28 type) ensures optimal light distribution. A power of 250W combined with a luminous flux of 31600 lm provides intense, bright light with a color temperature of 2000 K – a warm, yellow color typical of sodium lamps. It requires the use of an external ballast and igniter, which must be taken into account during installation.

Advantages and benefits

• Long lifespan: The average lamp life is as long as 32,000 hours, which minimizes replacement costs.
• High luminous efficacy: 126 lm/W means efficient energy use and reduced electricity consumption.
• Energy saving: Potential to save up to 50% energy compared to traditional mercury lamps (HQL).
• Stable luminous flux: Maintaining high efficiency throughout the operating period.
• Dimming capability: Compatible with conventional and electronic power supplies, allowing adjustment of light intensity.
• Renowned manufacturer: Product of LEDVANCE (formerly OSRAM), a guarantee of quality and reliability.

Construction and parameters

The lamp has an E40 base, ensuring easy mounting in standard luminaires. Its diameter is 91 mm, and the total length is 226 mm – dimensions should be considered when selecting a luminaire. It should be remembered that the lamp contains mercury, therefore it requires proper disposal after the end of its service life. The color rendering index (CRI) is in the range of 20-39, which means poorer color reproduction compared to other light sources – this is typical of sodium lamps and should be considered when choosing lighting where accurate color reproduction is crucial. Energy consumption for 1000 hours of operation is 280.5 kWh.