IT System Dual Source and Dual Mains
IT System Dual Source and Dual Mains with 3-Pole Circuit Breakers
NOTE: Refer to IEC 60364 series for general requirements and refer
to local codes for specific local requirements.
NOTE:
-
When an IT system is used for continuity of supply, an insulation monitoring device must be provided according to IEC 60364-4-41.
-
Impedance (Z) has to be sufficiently high or be an open circuit in order to achieve low fault current.
IT System Dual Source and Dual Mains with 4-Pole Circuit Breakers
NOTE: Refer to IEC 60364 series for general requirements and refer
to local codes for specific local requirements.
NOTE:
-
When an IT system is used for continuity of supply, an insulation monitoring device must be provided according to IEC 60364-4-41.
-
Impedance (Z) has to be sufficiently high or be an open circuit in order to achieve low fault current.
