GE Discovery NM/CT 670 Instructions Manual page 111

Electrical Requirements
Table 5-4: Power Supply Requirements (Continued)
Characteristics
Line impedance 0.4 Ohm
Fuse or Circuit 90 A / 110 A / 125 A / 150 A
Breaker Ratings (corresponding to the ordered
transformer and MDP model)
Power In scan room and in operator
requirements for room:
equipment not 2 one-phase regular power
powered from the outlets for service tools (such
system as vacuum cleaner, electric drill,
soldering iron etc.)
Power stability Maximum transient voltages
(transient etc) should be limited to 1500 V
requirements peak
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.
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.

Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare
Comments
For service activities
Sags and surges of the power line must not exceed the absolute range limits
shown in Table 5-2, D670 Nominal Line Voltage Ranges,
5-6
5.2 Power Supply Requirements
p.5-3.