Mazda Metal Halide MAIH 2000W B 380V

The French manufacturer Compagnie des Lampes was one of the early pioneers in the development of metal halide lamps, but only ever made high power versions of 400W to 2000W. Metal halide technology becomes progressively more difficult to master at lower powers, and the company sourced in such products from Philips, with whom it had a technical affiliation for many years.

The Mazda MAI-series employs the same chemistry as GE's original metal halides, being dosed with the iodides of sodium, indium and thallium plus lithium as an impurity from the quartz. The influence from Philips is evidenced by the unusual neon-argon filled arc tubes, and neon-nitrogen filled outer envelopes, which facilitates ignition at lower voltages. An attempt to limit sodium loss by the photoelectric effect has been made by sleeving the arc tube support frame in heavy-walled quartz tubing.

Cdl-Mazda produced two different 2000W lamps - type 'A' having a short arc and being intended for use on a low voltage single phase supply. This type 'B' was was intended for use across the terminals of a 3-phase electricity supply, and has a long arc which offers improved system efficacy and lamp life. The arc tube has been fabricated from three pieces of quartz, and the outer bulb employs a zirconium-aluminium hydrogen getter. The cap employs a porcelain insulator to better withstand the high ignition voltages under humid outdoor conditions, but is of an old-fashioned and electrically unsafe design in which the cap shell is also electrified. Following Philips' 1982 takeover of CdL-Mazda, lamp was phased out and replaced by Philips' own equivalent version.
Manufacturer: Compagnie des Lampes
Lamp Power: 2000 Watts
Lamp Current: 8.6 Amps
Lamp Voltage: 240 Volts
Cap Type: E40s/89x82 Ni plated brass + porcelain
Bulb Type: TT-100 TT-32 (in eighths/inch)
Bulb Finish: Clear Borosilicate glass
Electrodes: Backwound coil Thoriated tungsten
Arc Length:
Atmosphere: (NaInTl)Ix, Hg | NeAr Outer: Nitrogen-Neon
Luminous Flux: 180,000 lm @ 100h
Luminous Efficacy: 90.0 lm/W @ 100h
Colour Temperature & CRI: 4000-4800K Ra 56-68
Chromaticity Co-ordinates: CCx: CCy:
Rated Lifetime: 6,000 hours to 50% survival
Warm-up & Re-strike Time: 8 minutes 15 minutes
Burning Position: Horizontal
Overall Length: 448 mm 175/8 inches
Light Centre Length: 265 mm 101/2 inches
Factory: Chalon-sur-SaƓne France
Date of Manufacture: April 1978
Original Value: Unknown
References: 1) Compagnie des Lampes Mazda Catalogue, France, 1982 pp.126-127