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AFNOR
NF EN 488-1
En Vigor
2025-03-19
District heating pipes - Bonded single pipe systems for directly buried
hot water networks - Part 1 : factory made steel shut-off valve assembly
for steel service pipes, polyurethane thermal insulation and a casing of polyethylene
AFNOR
NF EN IEC 61558-2-13
En Vigor
2025-03-14
Safety of transformers, reactors, power supply units and combinations
thereof - Part 2-13: Particular requirements and tests for
auto-transformers and power supply units incorporating auto-transformers
for general applications
AFNOR
NF EN IEC 61558-2-8
En Vigor
2025-03-14
Safety of transformers, reactors, power supply units and combinations
thereof - Part 2-8 : particular requirements and tests for transformers
and power supply units for bells and chimes
AFNOR
NF EN IEC 61558-2-12
En Vigor
2025-03-14
Safety of transformers, reactors, power supply units and combination
thereof - Part 2-12: Particular requirements and tests for constant
voltage transformers and power supply units for constant voltage
