Assortment
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Product assortment
Double-capped fluorescent tubes for ambient lighting
Double capped fluorescent lamps, colored
Double capped fluorescent special purpose lamps, ultraviolet
High pressure mercury arc lamps
Blended light lamps
High pressure discharge DRLF lamps
High pressure sodium lamps
High pressure sodium lamps with two discharge tubes
High pressure mercury arc metal-halide lamps
Starters
Glassware, semiproducts

High pressure sodium lamps with two discharge tubes

D (first letter) (Д) - arc
Na ( На ) - sodium
D (second letter) (Д) – with two burners

The main characteristic feature of these lamps is that inside outer light bulb parallely to each other (geometrically and electrically) there installed two discharge tubes (burners). Such construction ensures practically double increase of operating life (after one burner switches off, the other burns up automatically), quick repeated burning of lamp and stable voltage in power supply.

The lamps are designed for working in AC power supply with 220 V and 50 (60) Hz with ballasts and pulse ignition devices (IZU and UIZU) corresponding to lamp frequencies.

Universal burning position.

Suitable for mounting in hard-to-reach areas i. e. where it requires a lot of financial and labor costs.

Main consumers: public lighting organizations, regional roads, railway stations.

Advantages:
- enhanced operating life compared to one burner DNaD lamp;
- high   luminous efficiency  within all operating life;
- reliability - rare break downs in first 12000 hours of burning;
- in case of power line surge the second burner quickly comes on (ignition time of one burner lamp is 7-10 minutes);
- energy saving compared to other gas-discharge lamps;
- reduction of costs during operation life and on recycling.

Loading information

Наимен Weight Number in a box Weight (box with lamps) Box size , mm
gr piece kg length width height
ДНаД 100 150 20 3,9 265 215 273
ДНаД 150 160 20 4,1 265 215 273
ДНаД 250 210 20 5,2 265 215 322
ДНаД 400 230 20 5,7 265 215 340

Specification

Name Power Voltage Current А Luminous
power klm
Luminous efficacy
after 100 h
Size,
any more mm
Lamp coloration Lamp
cap type
Color rendering index. Color rendering index

Bulb type

Watt V work. starting. after
10 h
after
100 h
Lm/Watt L D Ra К
ДНаД 100 100 85-115 1,2 2 8,7 9 90 211 48 golden yellow Е 40 20 2000 tubular
ДНаД 150 150 85-115 1,8 2,9 13,7 15 100 211 48 golden yellow Е 40 20 2000 tubular
ДНаД 250 250 85-115 3 4,5 24 26 104 260 48 golden yellow Е 40 20 2000 tubular
ДНаД 400 400 74-117 4,6 7,15 46 48 120 278 48 golden yellow Е 40 20 2000 tubular

 

 
Ltd " Factory GRL "
3 Zavodskaya str, Poltava, Ukraine, 36007
tel./fax: +38 (0532) 518-315, 518-350
e-mail: marketing@grl.com.ua
Ltd. "Trade house PZ GRL-Ukraine"
3 Zavodskaya str, Poltava, Ukraine, 36007
tel./fax: +38 (0532) 519-122, 518-308
e-mail: marketing@grl.com.ua