IMPA: 791230

High Pressure Sodium T-Bulb MHT Lamp – IMPA 791230

This High Pressure Sodium (HPS) T-Bulb MHT lamp is a professional-grade lighting solution designed for demanding marine environments. It meets IMPA specification 791230 and is ideal for use in ship decks, cargo holds, engine rooms, and other areas requiring bright, efficient illumination. Engineered to withstand vibration and temperature extremes, this lamp delivers consistent light output with excellent energy efficiency.

Featuring a compact T-bulb shape and standard base options, this lamp fits a wide range of existing marine lighting fixtures. Its high lumen output and long average life reduce maintenance intervals and operating costs, making it a trusted choice for ship chandlers and vessel operators worldwide. Whether used for general area lighting or specialized maritime applications, this HPS lamp ensures dependable performance.

Key Features

Technical Specifications

AttributeSpecification
Lamp TypeHigh Pressure Sodium (HPS)
Bulb ShapeT-Bulb (Tubular)
WattageAvailable in 70W, 100W, 150W, 250W, 400W
Base TypeE27 / E40 (depending on wattage)
Voltage200–240V AC, 50/60 Hz
Luminous FluxUp to 50,000 lumens (for 400W version)
Color TemperatureApproximately 2000K (warm white)
CRIRa > 25
Average Rated Life24,000 hours
Operation Temperature-40°C to +50°C
IP RatingIP65 (when installed in compatible fixture)
IMPA Code791230

Frequently Asked Questions

What are the common applications for this HPS T-bulb lamp?

These lamps are typically used for area lighting on ships, including decks, corridors, engine rooms, and cargo holds. They are also suitable for dockside and industrial marine lighting fixtures.

Does this lamp come with a base included?

The lamp features a standard E27 or E40 base (depending on wattage) that fits directly into matching sockets. No adaptor is required for most marine fixtures.

What is the average lifespan of this HPS lamp?

Depending on the wattage and operating conditions, the average rated life is approximately 24,000 hours, which reduces the frequency of replacements at sea.

Is this lamp compatible with existing high-pressure sodium ballasts?

Yes, this lamp is designed to operate with standard HPS ballasts and ignitors normally used in marine lighting circuits. Always check ballast specifications for the exact wattage.

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