GE BrightSpeed Elite, Руководство по предварительной установке

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GE H
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NSTALLATION
Page 128 Section 2.0 - System Input Power
Section 2.0
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System Input Power
2.1 Power Source Configuration
The BrightSpeed CT Scanner is designed to operate on a three-phase, four-wire wye power source.
A solidly grounded wye source is preferred. The neutral wire does not need to be run to the system,
i.e., four-wire connection. If a neutral wire is run, then it should be terminated in the PDB or A1 box.
A dedicated feeder from the nearest Main Distribution Panel (MDP) should be used to supply power
to the scanner. In accordance with the National Electric Code (U.S.) and similar applicable national
and local codes, a protective disconnect device must be provided in the power line supplying the
PDU. It must be located within 10 m (32 ft.) of the PDU, dedicate to CT system, visible to PDU
service personnel, and must have lockout /tagout provisions.
2.2 Rating
BrightSpeed Elite (16 slice), Edge (8 slice): 90kVA
BrightSpeed Excel (4 slice):
75 kVA is standard rating, 90kVA is an optional rating.
The BrightSpeed system operates on three-phase power meeting the following specifications.
(Note: The value in the brackets is for 75kVA.)
Voltage 200 to 480 VAC
Capacity 90 kVA (75KVA)
Frequency 50 or 60 Hz +/- 3 Hz
• Maximum power demand = 90 kVA (75KVA) @ 0.85 PF at a selected technique of 140 kV, 380
mA (300mA) .
• Average (continuous) power demand at maximum duty cycle = 20kVA.
The disconnect device referenced above must provide overcurrent protection for the system. A
disconnect utilizing undervoltage release control is preferred over shunt trip devices. The rating of
the disconnect device depends on the nominal line voltage at the site. Refer to
Section 3.0
Recommended Power Distribution System , for minimum rating requirements and suggested
disconnect devices.
NOTICE The electrical rating is described on the system rating label attached on the gantry; not on the PDU.
WARNING
TO PREVENT POWER LOSS TO OTHER LOADS IN CASE OF AN
UNEXPECTED CT OR PET SYSTEM FAULT, THE POWER FEEDER MUST
HAVE OVERCURRENT PROTECTION SUCH THAT THE DOWN-STREAM
OVERCURRENT PROTECTION DEVICES (E.G. GE A1 PANEL) CLEAR THE
FAULT BEFORE ANY UP-STREAM OVERCURRENT PROTECTION DEVICE
OPENS.