WIRE
DISTANCE FROM
POWER TRANSFORMER
SIZES
Wire
TO LINE SWITCH
AWG
Inches
Diameter
Millimeters
For Line Voltage of 95 to 125:
Feet
Meters
0-15
#3
25
31-150
0-590
15.1-46
#0
35
9.9
151-200
46.1-61
#000
,40
10.5
Deviation
from
the
Recommended
Power
6,0
Supply: -
The objective of the recommended power supply is to deliver at the line terminals of the x-ray machine
sufficient power for proper operation. The maximum rated demand of the unit is 10 KVA at 90% power
factor, Any combination of generating equipment, power supply and feed lines which will deliver this
power with a voltage change between load and no load of not more than 9% or preferably 6%, may be
considered adequate,
IMPORTANT-- Effect
of
frequency
change
While this equipment is designed to operate at either 50-cycles or 60-cycles, the x-ray timer is driven
by a synchronous motor the speed of which is proportional to the frequency. The timer dial calibration
is correct only at 60-cycles. At 50-cycles the timer runs at 5/6 the speed of 60-cycle operation, hence
actual timing is 6/5 or 1.2 times that shown on the dial,
Proper recognition must be given this condi-
tion when setting up technics and utilizing x-ray tube ratings. Disregard of the correction factor may
result in over exposed films or an overloaded tube, See Operation Section for details,