Product family datasheet Low-voltage over-pressure longlife lamps for 10 V systems, road traffic Areas of application _ Road traffic signalling systems __ Product benefits _ Increased lamp life compared to existing low-voltage signal lamps _ Max. premature failure rate: 2 % up to 8,000 h (related to lamp failures only) _ Exchange of existing low-voltage high-pressure lamps possible without adjustment _ Retrofit for 230 V systems (replace lamp and reflector and install transformator) Product features _ Maintenance intervals up to one year possible (depending on installation) May 25, 2016, 17:21:50 Low-voltage over-pressure longlife lamps for 10 V systems, road traffic © 2016, OSRAM GmbH. All rights reserved. Page 1 of 4 Product family datasheet Product line drawing __ May 25, 2016, 17:21:50 Low-voltage over-pressure longlife lamps for 10 V systems, road traffic © 2016, OSRAM GmbH. All rights reserved. Page 2 of 4 Product family datasheet Technical data Electrical data Photomet rical data Dimensions & weight Capabilities Product description Nominal wattage Nominal voltage Test voltage Nominal luminous flux Diameter Overall length Light center length (LCL) Burning position SIG 1227 LL 22.00 W 10.0 V 10.5 V 270 lm 36.0 mm 67.0 mm 31.0 mm 1) s135 2) SIG 1238 LL 30.00 W 10.0 V 10.5 V 400 lm 36.0 mm 67.0 mm 31.0 mm 1) s135 2) Country specific categorizations __ Product description Order reference SIG 1227 LL SIG 1227UELL CL SIG 1238 LL SIG 1238 LL 30W 1) Distance from the coil to the lug of base 2) Lamps with transverse filament should be preferred inclined perpendicular to the filament plane May 25, 2016, 17:21:50 Low-voltage over-pressure longlife lamps for 10 V systems, road traffic © 2016, OSRAM GmbH. All rights reserved. Page 3 of 4 Product family datasheet Safety advice Use only in signal equipment/luminaires that are specially designed for the purpose. Protect the lamps against moisture during operation and installation. Application advice For more detailed application information and graphics please see product datasheet. Disclaimer Subject to change without notice. Errors and omission excepted. Always make sure to use the most recent release. __ May 25, 2016, 17:21:50 Low-voltage over-pressure longlife lamps for 10 V systems, road traffic © 2016, OSRAM GmbH. All rights reserved. Page 4 of 4