New museum items

Siemens SIERAY DUAL MADE IN ENGLAND 250V 300W Januar 1941

A mercury vapor high pressure lamp from BGW with ignition electrode.

Lamp power: 500 W

Lamp current DC: 5.9 to 7.2 A

AC lamp current: 6.7 to 8.2 A

Lamp voltage: 70 - 85 V

System voltage DC: 110 V - 220 V + / 5%

System voltage AC: 220 V + / 5%

Lead Time: 5 - 8 min

Socket: M4 / M3 ignition electrode

Length: 172 mm

Light center: from the anode 70 mm

Burning position: Standing + / 20 °

Anode up

Ignition electrode not on the arc

DROT 2000 0682 OTK 5

Manufacturer: Razrjad
Lamp power: 2000 W
Production date: 1982 ?

An unusual lamp shape and a curious base for a metal halide lamp.

Manufacturer: BGW

Lamp power: 120W

E27

A very early HQ lamp from BGW. Probably just a test lamp. The base of the lamp and the stamp of the lamp are very unusual.