Electrical Requirements
5.2 Power Supply Requirements
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare
5-6
Total load regulation as measured at the PDU input terminals must not exceed 6%. The capacity
of the facility transformer and the size and length of feeder wires directly affect the load regulation
presented to the system.
Line impedance
0.4 Ohm
Fuse or Circuit
Breaker Ratings
90 A / 110 A / 125 A / 150 A
(corresponding to the ordered
transformer and MDP model)
Power
requirements for
equipment not
powered from the
system
In scan room and in operator
room:
2 one-phase regular power
outlets for service tools (such
as vacuum cleaner, electric drill,
soldering iron etc.)
For service activities
Power stability
(transient etc)
requirements
Maximum transient voltages
should be limited to 1500 V
peak
Sags and surges of the power line must not exceed the absolute range limits
shown in
Table 5-2, D670 Nominal Line Voltage Ranges, p.5-3
Table 5-4: Power Supply Requirements (Continued)
Characteristics
Comments
NOTE
The MDP (A1) must provide overcurrent protection for the system and facilitate multi-point remote “Emergency
Off” control of system power. An MDP with a disconnect that uses an under-voltage release control is preferred
over shunt trip devices. The rating of the MDP disconnect device depends on the nominal line voltage at the site.
The electrical rating is described on the system rating label attached to the gantry; not on the PDU.