Eco Cera High Wattage Ceramic Metal Halide |
Their products were first shown during 2000, comprising a 220W and 360W lamp with integrated glowbottle starter, for use as an energy saving retrofit for high pressure mercury lamps. The lamp here is a 230W version without starter, intended for use with an external ignitor on mercury gear.
The raw alumina arc tube in this lamp originates from NGK's Japanese operation. It has been dosed and sealed however in the piloting production labs of GS. A molybdenum starting wire runs parallel to its axis, connected to the frame via a bi-metal switch to electrically isolate it once the lamp has run up. The arc tube employs similar seals to all other modern ceramic metal halide lamps, based on the Philips protruding plug concept containing the usual niobium and coiled molybdenum sections. However seal stresses are somewhat greater in the higher wattage lamps, and can lead to cracks. The engineers at GS successfully developed a modified seal type that better withstands these stresses.
It makes use of a so called niobium buffer component, effectively an overwound spiral of niobium at the outermost region of the seal, which operates in a similar manner to the molybdenum spiral deeper in the seal and prevents thermal stresses from rising to levels which would ordinarily crack the seal had a solid wire been employed. Backspacing is set by a short section of niobium wire welded parallel to the feedthrough, and NGK's standard frit glass is employed.
| Manufacturer: | Japan Storage Battery Co., Ltd. | |
| Lamp Power: | 230 Watts | |
| Lamp Current: | 2.2 Amps | |
| Lamp Voltage: | 120 Volts | |
| Cap: | E40s/45 | Ni Plated + Vitrite |
| Bulb Finish: | Clear | Leaded Borosilicate |
| Bulb Type: | BT-90 | |
| Overall Length: | 240 mm | |
| Light Centre Length: | 160 mm | |
| Electrodes: | Single wound tip | Pure tungsten |
| Atmosphere: | Inner : Argon | Outer : Hard Vacuum |
| Luminous Flux: | 22,000 lm | @ 100 hours |
| Luminous Efficacy: | 95.6 lm/W | @ 100 hours |
| Colour Temperature & CRI: | CCT: 3700K | CRI: Ra 84 |
| Chromaticity Co-ordinates: | CCx: 0.382 | CCy: 0.350 |
| Burning Position | Vertical ± 60° | |
| Rated Life: | 15,000 hours | to 50% survival |
| Factory: | Kyoto | Japan |
| Date of Manufacture: | 2001 | |
| Original / Present Value: | ||
