Power Requirements; Power Distribution; Specifications Of Back-Up Power Supply; Specifications Of Main Power Input - GE SIGNA PIONEER Installation Manual

POWER REQUIREMENTS

SPECIFICATIONS OF MAIN POWER INPUT

POWER SUPPLY
FREQUENCIES
POWER FACTOR
MAXIMUM INPUT POWER (5 sec MAX)
CONTINUOUS (AVERAGE) POWER
STAND-BY POWER
Power input must be separated from any others which may generate transients (elevators, air conditioning,
radiology rooms equipped with high speed film changers...).
Total harmonic distortion less than 2.5%.
Phase imbalance must not exceed 2%.

SPECIFICATIONS OF BACK-UP POWER SUPPLY

FOR MAGNET MONITOR
POWER INPUT
POWER DEMAND
VOLTAGE
FREQUENCY
FOR CRYOCOOLER COMPRESSOR
POWER INPUT
POWER REQUIREMENT
POWER CONSUMPTION
FREQUENCY
CABLES
Power and cable installation must comply with the distribution diagram.
Size of the Main power input cable is determined by the customer, taking its length and admissible voltage
drops into consideration.
All cables must be isolated and flexible, cable color codes must comply with standards for electrical installation.
The cables from signaling and remote control (Y,Emergency Off Buttons,L...) will go to Main Panel with a pigtail
length of 1.5m [60in], and will be connected during installation.
Each conductor will be identified and isolated (screw connector).
GROUND SYSTEM
The equipotential link will be by means of an equipotential bar.
The grounding point of MDP is directly connected to the building's ground by an isolated copper cable.
The impedance of the earth bar should be less than or equal to 2 ohms.
MIN. FEEDER WIRE SIZE,
AWG OR MCM
100 (30.5) 150 (46)
(sq. M)/VAC
480 VAC 3/0 (85) 3/0 (85)
GROUND REQ'D 4 4
In all cases qualified personnel must verify that the feeder (at the point of take-off) and the run to the MR system meet all the requirements
For a single unit installation, the minimum transformer size is 225KVa. Regulated transformer is not required unless voltage changes exceed
+/- 10% over a period of 1 hour or longer
Grounding conductor will run from the equipment back to the power source/main grounding point and always travel in the same conduit
Typical
380/400/415/480V +7.5%/-10%, THREE-PHASE + GND
0.9
77kVA
64kVA
< 17kVA
EMERGENCY POWER SUPPLY, SINGLE PHASE + GROUND
2kVA
110V / 220V
380/400/415/480V, THREE-PHASE + G
MIN 9kVA
MAX 7.2kW / STEADY STATE 6.5kW at 50Hz
MAX 8.3kW / STEADY STATE 7.5kW at 60Hz
FEEDER TABLE
MINIMUM FEEDER WIRE LENGTH - ft (m)
200 (61) 250 (76) 300 (92) 350 (107) 400 (122)
3/0 (85) 3/0 (85) 3/0 (85) 3/0 (85) 3/0 (85)
4 4 4 4
GENERAL NOTES
stated in the PIM
with the feeders
SIGNA PIONEER
Facility
input
power
(480-V,
Ground
3 Phase
+ GND)
Neutral
If present,
neutral must be
terminated
inside the MDP.
Accepts
4AWG-350kcmil
[25-150 sq mm]
CB MDP
1 200 AMPS
2 150 AMPS
3 50 AMPS
NOTE:
Cryocooler Compressor (CRY) must operate 24 hours
per day, 7 days per week.
Runs E0009, E3030 and M3030 are GE supplied cables.
all other wiring is customer supplied and installed.
Two remote Emergency Off Buttons are supplied with
the MDP. Emergency Off removes power from all outputs
when activated .
MDP provides power to customer provided circuit
breakers for PDU (located in the Integrated Systems
Cabinet (ISC)) and the Cryocooler Compressor (CRY).
All MDP output circuits drop out on loss of power. the
Cryocooler (CRY) circuit will automatically restart upon
restoration of power.
GE MDP Short circuit current rating is 25,000 amperes
450 (137)
at 480 VAC.
3/0 (85)
GE MDP is NRTL labeled.
4 4
All feeder circuits require ground wires.
EN-MRI-TYP-SIGNA_PIONEER-WEB.DWG

POWER DISTRIBUTION

Main Disconnect Panel (MDP)
(Customer
supplied)
A B
CB 125A
CB#1 CB#2
L1
L2
L3
G/PE
buss bar
Neutral
buss bar
D
CB#3
Fuses
CB 30A
(Customer
120VAC
supplied)
Emergency Off
Auto
DC Safety
restart
circuit with
control
battery backup
circuit
F
G
NC
Run E3030
Equipment Room
"Emergency Off" Button
(E02)
Accepts following range of stranded conductors . All wire
types, color and sizing to be selected in accordance with
governing electrical code(s).
Item
A
B
C
D
E
F
Rev A Date 23/Jul/2018
Integrated
Systems Cabinet
(ISC)
C
Terminal
strip
GND
RF common ground stud (do
not ground RF room to any
point other than the PDU)
Integrated Cooling
Cabinet (ICC)
E
GND
Cryocooler
Compressor
(CRY)
Run
E0009
RF shield
Penetration
Panel
Run M3030
Magnet Room
"Emergency Off"
Button (E01)
NC
Cable SUPPLIED by CUSTOMER
Cable SUPPLIED by GE - Customer Installed
Equipment SUPPLIED by CUSTOMER
Equipment SUPPLIED by GE
Phase Ground
AWG/kcmil sq mm AWG/kcmil sq mm
8-350 10-185 6-250 16-120
8-350 10-185 6-250 16-120
10-1 1-35 10-1 1-35
14-1/0 2.5-50 14-4 2.5-25
14-10 2.5-6 14-10 2.5-6
22-12 0.5-2.5
E5 - Power Requirements 23 /24