Flameproof universal lamp - NSU-D 12/24
Flameproof universal diode lamp type NSU-D 12/24 is used as illuminating light for mining suspending and railways locomotives, roadheading machines and others. Lamp is powered from mining machine electric current.
Flameproof universal lamp NSU-D 12/24 is lamp in flameproof enclosure with bus-bar space and one flameproof bushing for power lead cable induction and with fixing flange for self gripping to machine. Lamp consists from flameproof enclosure with glass, bus-bar space, set of LED diode – 3 red and 3 white diodes, 3 holders with lens, duraluminium cooler, and plate of electronics, terminals, switch and fixing flange, which is part of enclosure. Glass of flameproof enclosure is protected with grating cover. In flameproof space is located duraluminium cooler with set of LED diodes and holders with lens, plate of electronics, switch, flameproof bushing, which lead to bus-bar space. In bus-bar space are terminals for connecting to power source. From bus-bar space goes out flameproof bushing for cable connecting.Flameproof universal lamp NSU-D 12/24 is furnished with 6 LED diodes and switch of main lamp. Main lightening 3 LED diodes are white, 3 LED diodes are red and attended as tail red light. After swith on lamp is light up main lightening LED diodes. Tail red light is switch on permanently.
Flameproof universal lamp NSU-D 12/24 is allowed to operate in coal mines with dangerous of explosion of methane and with combustible coal dust. According to ČSN EN 1127-2 it could operate in spaces “SNM2” and “SNP2”. For using this lamp in underground there is accepted ČSN EN 1127-2 “Explosive spaces – prevention and protection from explosion”. According to government direction the lamp is going to group of equipment I, category M2 and in case of rising of explosion atmosphere it must be switch off.

| Technical parameters | |
|---|---|
| Voltage rating | 12 - 24 V DC IT (isolated from frame) |
| Rated power lightening sources | 14 W |
| Rated power | max. 35 W |
| LED of main lamp | Lambertian LED 12 W white |
| LED of tail light | Lambertian LED 1 W red |
| Protection from dangerous contact | low voltage SELV |
| Weight | 15 kg |
| Degree of coverage according to ČSN EN 60529 | IP54 |
| Kind of flameproof performance | I M2 Ex d |
