Filament lamp for use in lighting fixtures of all types of transport
Technical parameters
| Rated voltage, V | 27 |
| Rated power, W | 1.5 |
| Luminous flux, lm | 5.5 |
| Average lifetime, not less than, h | 1000 |
| Base type | No base |
| Circuit type | DC or AC (50 Hz) |
Annotation breakdown
SM – type
27 – rated voltage, V
1.5 – rated power, W
1 – special version
Operational conditions
Lamps can be used at diminished air pressure and increased relative humidity (up to 98%) at rated voltage. Voltages other than rated are allowed, with correspondent reduction of luminous flux and lifetime.
