Which standards to follow for low voltage Surge Protective Devices?
Globally people use different standards to choose low voltage Surge Protective Device.
There are below main standards,
Surge Arresters for Low-Voltage installations:
IEC 61643-11 (International)
EN 61643-11 (Europe)
VDE 0675-6-11 (Germany)
NF/EN 61643-11(France)
UL1449 (USA)
Surge Arresters for photovoltaic installations:
IEC61643-31
EN 50539-11
UL1449 DC PV SPD
Surge Protectors for Telecom equipment:
IEC 61643-21 (International)
ITU-T recommendations K11, K12, K17, K20, K21, K36 (International)
UL 497 A/B (USA)
Among the above standards,IEC61643-11 and UL1449 are most widely used forlow voltage SPD for AC application,IEC61643-31 and UL1449 DC PV SPD are used for DC PV SPD.
For telecom / dataline surge protectors,IEC 61643-21 and UL 497 A/B are widely used.