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GE Healthcare
4 Power and Grounding Recommendations
•
A breaker with cut-out capability shall be installed by the customer (or his contractor) next to
the PDB. It is needed for the LOTO procedure in front of the PDB.
•
The main facility ground conductor to the PDB shall be copper wire and the minimum size as
required by the local coding regulations, such as the NEC. For countries, which are not covered
by local requirement (like NEC), the ground wire to earth should be at minimum of AWG 2/0
(150 A breaker) UL or 35mm 2 (80 A breaker) CE, or same size (100%) as feeder wires,
whichever is larger.
•
Power cables must not be used to supply other systems
•
Cables shall be in conformity with local regulation (UL, CSA, IEC, CCC).
Table 6-2:
V
Ohms
NOTE:
These 3 phases cables are not furnished by GE Healthcare. Provided by installer.
•
•
Reference: For specific Vascular system grounding maps and connection details, refer to the
MisMap and mis chart listed in
Chapter 6 Electrical Connections
Innova 2121-IQ/3131-IQ Biplane Cardiovascular Imaging System Pre-Installation Manual
Max Line Impedance for feeder line between Generator cabinet and Hospital
380
400
0.09
0.096
These cables must be kept separated as much as possible from room system cables.
The shield of any shielded cable coming from the distribution cannot replace the
ground wire.
MIS (Master Interconnect
Direction 5177951-4-1EN, Revision 1
420
440
0.102
0.108
System).
460
480
0.114
0.12
157
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