Revidiran
Applicable to low-voltage a.c. capacitor banks intended to be used for power factor correction purposes, equipped with a built-in switchgear and controlgear apparatus capable of connecting to or disconnecting from the mains part(s) of the bank with the aim to correct its power factor.
POVUČEN
IEC 61921:2003 ED1
99.60
Povlačenje stupilo na snagu
20. 6. 2017.
OBJAVLJEN
IEC 61921:2017 ED2