

NPT01-3×20-001 UHL 3.1 ceiling light fixture has been designed for interior lighting of vehicles (buses, trams, trolleybuses).
It is designed to operate from a DC power network. The light fixture consists of a metal base on which there are installed three 20W incandescent light bulbs and a diffuser made of polymethyl methacrylate of a "milky" colour. The lamps in the light fixture can be switched on separately making the use of one of the lamps for emergency (standby) lighting possible, which is required by SMT ET 007-04 Standard of the Ministry of Transport of the Russian Federation. The light fixture with incandescent light bulbs is reliable at low temperatures.
The conditions of resistance of the light fixture to mechanical factors comply with GOST R 52 230 -2004 for automotive equipment.
Nominal voltage, V |
27 |
Voltage limit values, V |
21,6÷30 |
Illumination at a distance of 1.2 m, lux (at least) |
85 |
Nominal Wattage, W |
60 |
Incandescent light bulb applied |
СМ 28-20 |
Operating temperature, °C |
from -20 to +55 |
Limit values of ambient temperature, °C |
from -40 to +65 |
Limit values of relative humidity at (+35±2)° C, % |
95±3 |
Light fixture operating life, vehicle-kilometres travelled (at least) |
350 thousand |
Warranty service life, vehicle-kilometres travelled (at least) |
50 thousand |
Degree of protection according to GOST 14254-80 |
IP30 |
Weight, kg (max) |
1.7 |
* Installation dimensions are carried out at the customer's request.