Latest updates on emergency lighting standard EN60598-2-22

On September 27, 2020, the EU released a new version of the emergency lighting standard:
EN 60598-2-22:2014/A1:2020
New standard release date: September 27, 2020
Old standard expiration date: March 27, 2023
Standard update content
Definitions
• Added practical emergency light source luminous flux definition (PELSF): The minimum luminous flux of the light source observed during the rated duration of emergency mode.
Optical test requirements
• Manufacturers shall provide intensity distribution data calculated according to ISO 30061 for the emergency lighting device. The luminous intensity in emergency mode can be expressed in cd or cd/1000lm. If expressed in cd, the manufacturer shall also provide the rated luminous flux derived from the light distribution curve table.
• If expressed in cd/1000 lm, the manufacturer shall provide the reference luminous flux in emergency mode. For luminaires with tubular fluorescent lamps or other discharge lamps, the reference luminous flux is the actual emergency light source luminous flux PELF multiplied by the EBLF of the associated emergency gear. For luminaires with LED light sources, the reference luminous flux is: the actual emergency light source luminous flux PELS, which can be calculated as: LED module (LDL) luminous flux under reference conditions corresponding to the luminaire (at the same TP) and at rated current (normal mode) multiplied by the EOFI (emergency/non-maintained mode) of the associated emergency control device.
• Emergency lighting luminaires shall provide at least 50% of the luminous intensity data claimed by the manufacturer for emergency mode within 5 seconds of a normal power supply failure; and 100% of the rated luminous intensity performance within 60 seconds until the end of the rated emergency operating duration. Emergency lighting luminaires for use in high risk task area lighting shall provide 100% of the claimed luminous intensity data within 0.5 seconds of a normal power supply failure and continue until the end of the rated emergency operating time.