GE Healthcare
Senographe DS Acquisition System
Revision 1
Operator Manual 5307907-3-S-1EN
Specifications
17-specs.fm
Page no. 199
Chapter 17
Chapter 17 Specifications
1
Technical specifications
1-1
Electrical specification
Mode of operation: Continuous operation with intermittent loading.
1-1-1
Line voltage specifications
•
Single-phase input voltage (phase-neutral or phase-phase):
-
200/208/220/240 V (± 10%)
•
Line frequency specification: 50 or 60 Hz (± 1 Hz)
•
Classification:
-
Type of protection against electric shock: CLASS 1.
-
Degree of protection against electric shock: TYPE B.
•
Maximum line current of the system: 42 A at 180 VAC, based on maximum input voltage (30 kV) and out-
put current (100 mA) of the tube housing assembly.
The maximum line current corresponds to the use of the technique factors 30 kV, Mo track, large focal
spot and 100 mAs or more.
1-1-2
kVA load characteristics
•
Maximum instantaneous power (during exposures, up to 6 seconds) 9 kVA.
•
Power factor: 0.6
1-1-3
Input impedance
The apparent resistance of the mains supply R
L
must be less than that which would cause a voltage drop of
6% at the maximum power load of 9 kVA. Refer to the table below for relevant values:
1-1-4
Generator output (excluding tube)
•
22 through 49 kV,
•
20 through 130 mA.
1-1-5
Duty cycle
The generator is always limited by the tube: the generator can supply a maximum of 100 W to the tube.
•
For an exposure under 40 kV, the system is limited by the tube mean current (2.5 mA).
Duty cycle is 30 kV/150 mAs exposure each minute.
•
For an exposure over 40 kV, the system is limited by the generator mean power (100 W).
Duty cycle is 48 kV/125 mAs exposure each minute.
1-1-6
Line conditioner resonance frequency
•
20 kHz approx.
1-1-7
Generator power (excluding tube)
•
5 kW maximum.
Nominal voltage (V ac)
200
208
220
240
Maximum impedance R
L
(ohms)
0.28
0.30
0.34
0.40
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