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система ЗСНН
stresses
automat.
protective extra-low voltage system
(
ssn
)
;
PELV system
(см.
ГОСТ IEC 60730-1-2011
ssn
)
electr.eng.
PELV system
(заземлённая цепь системы БСНН Protected extra-low voltage
wikipedia.org
,
proteq.ru
Steblyanskiy
)
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