Product Information
PI
ROTANODE™
E7242X
E7242FX
E7242GX
Rotating Anode X-ray Tube Assembly

Rotating anode X-ray tube assembly for the
purpose of general diagnostic X-ray
procedures.

Specially processed Rhenium-tungsten faced
molybdenum target of 74 mm diameter.

These tubes have foci 1.5 and 0.6, and are
available for a maximum tube voltage 125 kV.

Accommodated with IEC60526 type
high-voltage cable receptacles.
General Data
IEC Classification (IEC60601-1:2005) ............................................ Class Ⅰ ME EQUIPMET
Electrical:
Circuit:
High Voltage Generator ............................................ Constant Potential High-Voltage Generator
Grounding .......................................................................................................... Center-grounded
Nominal X-ray Tube Voltage (IEC60613:2010):
Radiographic ...................................................................................................................... 125 kV
Nominal Focal Spot Value (IEC60336:2005):
Large Focus ............................................................................................................................. 1.5
Small Focus ............................................................................................................................. 0.6
Nominal Anode Input Power (at 0.1s):
50 Hz
60 Hz
Large Focus ....................................................................................................... 47 kW
50 kW
Small Focus .................................................................................................... 16.5 kW
18 kW
Nominal Radiographic Anode Input Power (IEC60613:2010):
50 Hz
60 Hz
Large Focus ....................................................................................................... 37 kW
41 kW
Small Focus ....................................................................................................... 14 kW
16 kW
★The information contained herein is presented only as a guide for the applications of our products.
No Responsibility is assumed by TOSHIBA ELECTRON TUBES & DEVICES CO.,LTD.(TETD) for any infringements of patents or other rights of the
third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TETD or others.
★The information contained herein may be changed without prior notice. It is therefore advisable to contact TETD before proceeding with the design of
equipment incorporating this product.
E7242X / E7242FX / E7242GX
Motor Ratings:
Stator: XS-RA
Starting
50/60
Running
50/60
43
40
1.2
24
Driven Frequency
[Hz]
Input Power
[W]
1050
270
Voltage 1) 3)
[V]
200
100
Current 2)
[A]
6.0
3.0
4)
Min. Speed Up
[s]
0.8
1.5
Capacitor
[μF]
24
24
Note: 1) Applied voltage between common and main terminal.
2) Common current.
3) The every applied voltage must be never exceeded 110% of the above specification.
4) The speed-up time is allowed up to 110% of the above specification.
Anode Speed:
50 Hz ............................................................................................................ Minimum 2700 min-1
60 Hz ............................................................................................................ Minimum 3200 min-1
Stator Resistance:
Common-Main Winding ...................................................................................................... 27.5 Ω
Common-Auxiliary Winding ................................................................................................ 58.0 Ω
Resistance between Housing and Low Voltage Terminals ........................................ Minimum 2 MΩ
Normal Operating Range of the Housing Temperature ..................................................... 16 ~ 75 °C
Mode of Operation ........................................................................................................... Intermittent
Mechanical:
Dimensions .................................................................................................. See dimensional outline
Overall Length .................................................................................................................. 479 mm
Maximum Diameter ....................................................................................................... 152.4 mm
Target:
Anode Angle ............................................................................................................... 14 degrees
Diameter ............................................................................................................................ 74 mm
Construction .................................................................... Rhenium-Tungsten faced molybdenum
Filtration:
Permanent Filtration ............................................................. 0.9 mm Al / 75 kV IEC60522:1999
Available Additional Filter combination (0.4 - 1.5 mm) ..................... Maximum 2.4 mm Al / 75 kV
Radiation Protection (In accordance with IEC60601-1-3:2008):
Leakage Technique Factor ..................................................................................... 125 kV, 4 mA
X-ray Coverage .................................................................................. 354 × 354 mm at SID 710 mm
Weight (Approx.) ........................................................................................................................ 16 kg
High Voltage Receptacle ..................... To meet the requirements of IEC60526 Corrigendum1:2010
Cooling Method .................................................................................................. Natural or forced air
Tube Housing Model Number:
E7242X ............................................................................................................................. XH-121
E7242FX ........................................................................................................................... XH-126
E7242GX .......................................................................................................................... XH-150
-2-
E7242X / E7242FX / E7242GX
Absolute Maximum and Minimum Ratings
(At any time, these values must not be exceeded.)
Maximum X-ray Tube Voltage (IEC60613:2010):
Radiographic ...................................................................................................................... 125 kV
Between Anode (or Cathode) and Ground ............................................................................. 62.5 kV
Minimum X-ray Tube Voltage ................................................................................................... 40 kV
Maximum X-ray Tube Current (IEC60613:2010) .................................................... See rating charts
Large Focus ...................................................................................................................... 800 mA
Small Focus ...................................................................................................................... 290 mA
Maximum Filament Current:
Large Focus .......................................................................................................................... 5.3 A
Small Focus .......................................................................................................................... 5.3 A
Filament Voltage:
Large Focus (At maximum filament current 5.3 A) ................................................... 10.6 ~ 14.4 V
Small Focus (At maximum filament current 5.3 A) ....................................................... 5.1 ~ 6.9 V
Filament Frequency Limits ................................................................................................ 0 ~ 25 kHz
Continuous Anode Input Power (IEC60613:2010) ..................................................... 60 W (85HU/s)
Thermal Characteristics:
Anode Heat Content ......................................................................................... 142 kJ (200 kHU)
Maximum Anode Heat Dissipation ................................................................... 475 W (667 HU/s)
X-ray Tube Assembly Heat Content ................................................................ 900 kJ (1250 kHU)
Nominal Continuous Input Power (IEC60613:2010):
Without Air-circulator ................................................................................ 180 W (15 kHU/min)
Environmental Limits
Operating Limits:
Temperature ................................................................................................................ 10 ~ 40 °C
Humidity ........................................................................................................................ 30 ~ 85 %
(No condensation)
Atmospheric Pressure .............................................................................................. 70 ~ 106 kPa
Shipping and Storage Limits:
Temperature ............................................................................................................... -20 ~ 70 °C
Humidity ........................................................................................................................ 20 ~ 90 %
(No condensation)
Atmospheric Pressure .............................................................................................. 50 ~ 106 kPa
-3-
E7242X / E7242FX / E7242GX
Maximum Rating Charts
(Absolute Maximum Rating Charts)
Conditions: Tube Voltage
Constant Potential High-Voltage Generator
Stator Power Frequency 50Hz
Nominal Focal Spot Value: 1.5
800
50kV
70kV
80kV
250
40kV
90kV
TUBE CURRENT [mA]
TUBE CURRENT [mA]
600
300
60kV
70kV
700
Nominal Focal Spot Value: 0.6
100kV
500 110kV
125kV
400
300
200
200
60kV
80kV
50kV
90kV
100kV
110kV
150 125kV
40kV
100
50
100
0
0.01
0.03 0.07
0.02
0.05 0.1
0.2
0.3
0.5
1
2
3
0
0.01
5 7 10
0.7
0.02
EXPOSURE TIME [s]
0.03 0.07
0.05 0.1
0.2
0.3
0.5
1
2
3
5 7 10
0.7
EXPOSURE TIME [s]
Refer to IEC60613:2010
Conditions: Tube Voltage
Constant Potential High-Voltage Generator
Stator Power Frequency 60Hz
Nominal Focal Spot Value: 1.5
70kV
800
700
60kV
300
80kV
40kV
250
TUBE CURRENT [mA]
600 100kV
110kV
500
125kV
400
300
200
60kV
80kV
50kV
90kV
100kV
200
110kV
40kV
125kV
150
100
50
100
0
0.01
70kV
50kV
90kV
TUBE CURRENT [mA]
Nominal Focal Spot Value: 0.6
0.02
0.03 0.07
0.05 0.1
0.2
0.3
0.5
1
2
3
0
0.01
5 7 10
0.7
0.02
EXPOSURE TIME [s]
0.03 0.07
0.05 0.1
0.2
0.3
0.5
1
0.7
EXPOSURE TIME [s]
Refer to IEC60613:2010
-4-
2
3
5 7 10
E7242X / E7242FX / E7242GX
Emission & Filament Characteristics
Constant Potential High-Voltage Generator
Nominal Focal Spot Value: 1.5
14
800
80kV
13
100kV
TUBE CURRENT [mA]
110kV
12
600
125kV
11
500
Ef
10
400
60kV
9
300
40kV
200
8
100
7
FILAMENT VOLTAGE [V]
700
6
0
4.1
4.3
4.5
4.7
4.9
5.1
5.3
FILAMENT CURRENT [A]
Note1) For Reference Only
Note2) Refer to IEC60613:2010
Nominal Focal Spot Value: 0.6
300
14
12
50kV
60kV
80kV
200
10
100kV
125kV
150
8
100
6
40kV
50
4
Ef
0
2
4.1
4.3
4.5
4.7
4.9
FILAMENT CURRENT [A]
Note1) For Reference Only
Note2) Refer to IEC60613:2010
-5-
5.1
5.3
FILAMENT VOLTAGE [V]
TUBE CURRENT [mA]
250
E7242X / E7242FX / E7242GX
Thermal Characteristics
X-ray Tube Assembly Heating / Cooling Curve
900
180W
800
HEAT STORAGE [kJ]
700
600
500
COOLING
400
300
200
HEATING
100
0
0
20
40
60
80
100
120
140
160
180
200
TIME [min]
Anode Heating / Cooling Curve
140
HEAT STORAGE [kJ]
120
COOLING
100
80
60
40
60W
20
HEATING
0
0
1
2
3
4
5
6
7
8
9
TIME [min]
The heating curves are showing examples of average
input power to anode in operation.
-6-
10
E7242X / E7242FX / E7242GX
Dimensional Outline of E7242X
Unit mm
φ140
CENTRAL RAY AND REFERENCE AXIS
14
°
479
11.1
156
4-M5 8 DEEP
45
φ152.4
170
125.4
φ
90
92
41.27
11.1
4-M6 8 DEEP
ANODE
S
L
CATHODE
81
2-M63.5, P=1.27
121
53
11.1
C
TERMINAL CONNECTIONS
9 8 7 6 5
1 2 3 4 E
NCNC NC
NC
φ70
C1 M A
ET
TEMPERATURE RELAY
(NORMALLY CLOSED)
Note) Do not connect terminal No.1 and
No.5 or 6 in series circuit.
FOCAL SPOT
A
CENTRAL OF FOCAL SPOT
EXPLANATION OF SYMBOLS
CATHODE TERMINAL
C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
B
TERMINAL CONNECTIONS
C1 : COMMON
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR
NC : NON-CONNECTION
ET : EARTH TERMINAL
-7-
-1.5mm≦A≦1.5mm
-1.5mm≦B≦1.5mm
: CENTRAL X-RAY
ANODE & CATHODE TERMINAL
: IEC60526 TYPE
E7242X / E7242FX / E7242GX
Dimensional Outline of E7242FX
Unit mm
φ140
4-M6 8 DEEP
11.1
41.27
90
125.4
170
156
45
11.1
φ152.4
4-M5 8 DEEP
S
479
14°
L
92
φ
CENTRAL RAY AND REFERENCE AXIS
ANODE
CATHODE
C1 M A
81
NC NC NC
1 2 3 4 E
NC
φ70
9 8 7 6 5
121
53
TERMINAL CONNECTIONS
11.1
2-M63.5, P=1.27
C
ET
TEMPERATURE RELAY
(NORMALLY CLOSED)
Note) Do not connect terminal No.1 and
No.5 or 6 in series circuit.
FOCAL SPOT
CENTRAL OF FOCAL SPOT
A
EXPLANATION OF SYMBOLS
CATHODE TERMINAL
C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
B
TERMINAL CONNECTIONS
C1 : COMMON
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR
NC : NON-CONNECTION
ET : EARTH TERMINAL
-8-
-1.5mm≦A≦1.5mm
-1.5mm≦B≦1.5mm
: CENTRAL X-RAY
ANODE & CATHODE TERMINAL
: IEC60526 TYPE
E7242X / E7242FX / E7242GX
Dimensional Outline of E7242GX
Unit mm
φ152.4
479
156
11.1
125.4
170
11.1
ANODE
4-M5 8 DEEP
45
14° CENTRAL RAY
AND REFERENCE AXIS
90
φ
92
41.27
4-M6 8 DEEP
φ140
L
S
CATHODE
C
81
121
A
CENTER OF
FOCAL SPOT
2-M63.5, P=1.27
φ70
B
-1.5mm≦Ａ≦1.5mm
-1.5mm≦Ｂ≦1.5mm
TERMINAL CONNECTIONS
9 8 7 6 5
1
2 3 4 E
NCNC NC
NC
C1 M A
ET
TEMPERATURE RELAY
(NORMALLY CLOSED)
53
EXPLANATION OF SYMBOLS
CATHODE TERMINAL
C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
FOCAL SPOT
TERMINAL CONNECTIONS
C1 : COMMON
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR
NC : NON-CONNECTION
ET : EARTH TERMINAL
-9-
Note) Do not connect terminal No.1 and
No.5 or 6 in series circuit.
: CENTRAL X-RAY
ANODE & CATHODE TERMINAL
: IEC60526 TYPE
E7242X / E7242FX / E7242GX
OVERSEAS SUBSIDIARIES AND AFFILIATES
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PHONE +49 (211) 5296-107
FAX +49 (211) 5296-402
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HANSAALLEE 181 40549 DÜSSELDORF, GERMANY
PHONE +49 (211) 5296-107
FAX +49 (211) 5296-402
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・TOSHIBA ELECTRON DEVICES & MATERIALS (SHANGHAI) CO., LTD. (TEMS)
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PHONE +86 (21) 6361-0077
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