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EQUIPMENT FOR USE WITH "OSIRA" LAMPS
TAPPED CHOKE COILS
Z 1860 H 50
| Z 1840 | Z 1860 | Z 1871 |
| Overall length (A) | 3¼ ins | 3¾ ins | 4½ ins |
| Overall width (B) | 5¾ ins | 5¾ ins | 6½ ins |
| Overall projection (C) | 5½ ins | 5½ ins | 6½ ins |
| Weight | 10 lbs | 12½ lbs | 18½ lbs |
G.E.C. Tapped Choke Coils.
Designed to suit the OSIRA lamp and suitable for use with a single lamp operating on a 50-cycle alternating
current supply:
| 150 watt | Z 1840 H 50 or Z 1840 L 50 | Price each £2 5 0 |
| 250 watt | Z 1860 H 50 or Z 1860 L 50 | Price each £2 10 0 |
| 400 watt | Z 1871 H 50 or Z 1871 L 50 | Price each £2 14 0 |
| (See Note below.) |
| NOTE | (1) | 100-130 volts, 50 cycles.
For these supplies a small step-up transformer will be needed for each unit
or a larger transformer for a group of units. Particulars on application to G.E.C. (Z Department). |
| (2) | The voltage at the units must be specified in enquiries for choke coils, which
are supplied in two voltage ranges, Z 1840 H 50, Z 1860 H 50, and Z 1871 H 50 covering
actual voltages of 220 to 260 in steps of 5 volts, and Z 1840 L 50, Z 1860 L 50, and
Z 1871 L 50 covering actual voltages of 190 to 230 in steps of 5 volts. |
| (3) | Supplies of 40 cycles, 60 cycles, etc.
The standard G.E.C. chokes are accurately
adjusted to suit supplies at 50 cycles. For any other frequency specially adjusted G.E.C. chokes are necessary.
Particulars on application to G.E.C. (Z Department) |
| (4) | The G.E.C. choke coils are protected agaisnt damp by vacuum bitumen impregnation
and have no exposed live terminals. They must not, however, be subjected to direct water splash or drip. |
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