Technical Data TD

ROTANODE
E7252X
E7252FX
E7252GX

0197

Rotating Anode X-Ray Tube Housing Assembly

High speed rotating anode X-ray tube housing
assembly for high energy radiographic and
cine-fluoroscopic operations.
The heavy anode is constructed with specially
processed rhenium-tungsten faced
molybdenum target which is 74 mm diameter
and has an improved coating to increase
thermal emissivity.
These tubes have foci 1.2 mm and 0.6 mm,
and are available for a maximum tube voltage
150 kV with Three-phase generator.
Accommodated with IEC60526 type
high-voltage cable receptacles.

General Data
IEC Classification .............................................................................................................. Class
Electrical:
Circuit (Center-grounded) ................................................................... Three-phase full-wave rectified
Nominal Tube Voltage:
Radiographic ..................................................................................................... 40 ~ 150 kV Max.
Fluoroscopic ...................................................................................................... 40 ~ 125 kV Max.
Nominal Focal Spot Value:
Large Focus ...................................................................................................................... 1.2 mm
Small Focus ...................................................................................................................... 0.6 mm
Nominal Anode Input Energy (at 0.1s):
Large Focus ........................................................................................................................ 75 kW
Small Focus ........................................................................................................................ 27 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.
For further particulars apply to TETD.

No. TE-E7252X/FX/GX

2005-08-23

E7252X / E7252FX / E7252GX

Motor Ratings:
Stator: XS-AL
Duty

Starting

Power source

(Hz)

180

Input power

(W)

Voltage

4)

Current
Min. Speed up

1) 5)

Capacitor
Min. Braking

Running
2)

60

180

1100

910

83

83

(V)

220

130

60

40

(A)

5.7

7.8

1.6

2.3

(s)

1.2

0.8

44

44

(F)
2)

2)

(s)

60

3 / 90 V (DC)

Stator impedance:
Common-Main Winding ......................................................................................................... 9.4
Common-Auxiliary Winding.................................................................................................. 28.3
Stator: XS-R
Duty

Starting

Power source

(Hz)

180

Input power

(W)

Voltage

4)

Current
Min. Speed up
Capacitor
Min. Braking

1) 5)

Running
3)

50/60

180

2300

1450

300

80

(V)

460

240

130

58

(A)

5.4

6.5

2.0

1.5

(s)

1.0

0.6

24

24

(F)
2)

3)

(s)

1.5 / 90 V (DC)

50/60

3)

Note 1) The speed up time from normal speed of 3000 min-1 (3600 min-1) to high speed of
10800 min-1 is 2/3 times of the specified speed up time from 0 to high speed, which is
described on motor rating table.
2) To be applied for high speed rotation.
3) To be obtained with AID starter Model 60/180.
4) The every applied voltage must be never exceeded 110% of the above specification.
5) The speed-up time is allowed up to 110% of the above specification.
Stator impedance:
Common-Main Winding ....................................................................................................... 27.5
Common-Auxiliary Winding.................................................................................................. 58.0
Anode Speed:
50 Hz ................................................................................................................... 2700 min-1 Min.
60 Hz ................................................................................................................... 3200 min-1 Min.
180 Hz ................................................................................................................... 9700 min-1 Min.
Resistance between Housing and Low Voltage Terminals ................................................ 2 M Min.
Normal operating range of the housing temperature .......................................................... 16 ~ 75 C

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E7252X / E7252FX / E7252GX

Mechanical:
Dimensions: ................................................................................................. See dimensional outline
Overall Length .................................................................................................................. 476 mm
Maximum Diameter ....................................................................................................... 152.4 mm
Target:
Angle ........................................................................................................................... 12 degrees
Diameter ............................................................................................................................ 74 mm
Construction .................................................................... Rhenium-Tungsten faced Molybdenum
Permanent Filtration ............................................................... 0.9 mm Al / 75 kV IEC60522 / 2003
Radiation Protection (To meet the requirements of IEC 60601-1-3):
Leakage Technique Factor ................................................................................. 150 kV 3.4 mA
X-ray Coverage .................................................................................. 354 354 mm at SID 835 mm
Weight (Approx.) ........................................................................................................................ 18 kg
High Tension Terminals ...................................................... To meet the requirements of IEC 60526
Cooling Method .................................................................................................. Natural or forced air
Tube Housing Model Number:
E7252X .......................................................................................................................... XH-106V
E7252FX ........................................................................................................................ XH-180
E7252GX ......................................................................................................................... XH-181

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E7252X / E7252FX / E7252GX

Absolute Maximum and Minimum Ratings

(At any time, these values must not be exceeded.)
Maximum Tube Voltage:
Radiographic ...................................................................................................................... 150 kV
Fluoroscopic ....................................................................................................................... 125 kV
Maximum Voltage to Ground .................................................................................................... 78 kV
Minimum Tube Voltage ............................................................................................................. 50 kV
Maximum Tube Current:
Large Focus .................................................................................................................... 1000 mA
Small Focus ...................................................................................................................... 400 mA
Maximum Filament Current:
Large Focus .......................................................................................................................... 5.5 A
Small Focus .......................................................................................................................... 5.2 A
Filament Voltage:
Large Focus (At max. filament current 5.5 A) .......................................................... 12.7 ~ 17.1 V
Small Focus (At max. filament current 5.2 A) ............................................................... 7.0 ~ 9.4 V
Filament Frequency Limits ................................................................................................ 0 ~ 25 kHz
Average Input Power ............................................................................................ 142 W (200 HU/s)
(Fluoroscopic, repeated radiographic or mixed exposure)
Thermal Characteristics:
Anode Heat Content ......................................................................................... 210 kJ (300 kHU)
Maximum Anode Heat Dissipation Rate .......................................................... 475 W (667 HU/s)
X-ray Tube Assembly Heat Content ................................................................ 900 kJ (1250 kHU)
Maximum Housing Heat Dissipation Rate:
Without Air-circulator ................................................................................ 200 W (16 kHU/min)

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E7252X / E7252FX / E7252GX

Environmental Limits
Operating Limits:
Temperature ................................................................................................................ 10 ~ 40
Humidity ........................................................................................................................ 30 ~ 85 %
(No condensation)
Atmospheric Pressure .............................................................................................. 70 ~ 106 kPa
Shipping and Storage Limits:
Temperature .............................................................................................................. -20 ~ 70
Humidity ........................................................................................................................ 20 ~ 90 %
(No condensation)
Atmospheric Pressure .............................................................................................. 50 ~ 106 kPa

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E7252X / E7252FX / E7252GX

The information about EMC conformity (IEC60601-1-2 Ed2/2001)

As the result of reviewing the test requirements in the following Tables, an X-ray tube assembly
as a component of X-ray system or apparatus does not fall within the scope of the EMC directive of
IEC60601-1-2: 2001. Therefore, X-ray system manufacturer shall conduct the required test and
evaluate EMC.
CAUTION: The diagnostic X-ray system can only allow to use the designated cables and
components. If the different cables or components are used, they may deteriorate
the performance of electromagnetic emissions and immunity.
The following tables are the copies of statements in IEC60601-1-2: 2001
Table 1 Guidance and manufacturers declaration electromagnetic emissions
for all EQUIPMENT and SYSTEMS (see 6.8.3.201 a) 3))
Guidance and manufacturers declaration electromagnetic emissions
The [EQUIPMENT or SYSTEM] is intended for use in the electromagnetic environment specified
below. The customer or the user of the [EQUIPMENT or SYSTEM] should assure that it is used
in such an environment.
Emission test
Compliance
Electromagnetic environment - guidance
RF emissions
The [EQUIPMENT or SYSTEM] uses RF energy only
CISPR 11
for its internal function. Therefore, its RF emissions are
Group 1
very low and are not likely to cause any interference in
nearby electronic equipment.
RF emissions
The [EQUIPMENT or SYSTEM] must emit
CISPR 11
electromagnetic energy in order to perform its intended
Group 2
function. Nearby electronic equipment may be
affected.
RF emissions
Class [A or B]
CISPR 11
Harmonic
Class [A, B, C, D, or
emissions
Not applicable]]
IEC 61000-3-2
Voltage
fluctuations/
[Complies or Not
flicker emissions
applicable]
IEC 61000-3-3
The [EQUIPMENT or SYSTEM] is suitable for use in
all establishments, including domestic establishments
[See 6.8.3.2001 a]
and those directly connected to the public low-voltage
3) and Figure 201]
power supply network that supplies buildings used for
domestic purposes.
The [EQUIPMENT or SYSTEM] is suitable for use in
all establishments other than domestic and these
[See 3.8.3.201 a] 3)
directly connected to the public low-voltage power
and Figure 201
supply network that supplies buildings used for
domestic purposes.
RF emissions
The [EQUIPMENT] is not suitable for interconnection
Complies
CISPR 14-1
with other equipment.
RF emissions
The [EQUIPMENT] is not suitable for interconnection
Complies
CISPR 15
with other equipment.
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E7252X / E7252FX / E7252GX

Table 2 Guidance and manufacturers declaration electromagnetic immunity

for all EQUIPMENT and SYSTEMS (see 6.8.3.201 a) 6))
Guidance and manufacturers declaration electromagnetic immunity
The [EQUIPMENT or SYSTEM] is intended for use in the electromagnetic environment specified
below. The customer or the user of the [EQUIPMENT or SYSTEM] should assure that it is used
in such an environment.
Immunity test

IEC 60601
test level

Compliance
level

Electromagnetic environment
guidance

Electrostatic
discharge (ESD)
IEC 61000-4-2

6 kV contact
8 kV air

Floors should be wood, concrete or

ceramic tile. If floors are covered with
synthetic material, the relative
humidity should be at least 30 %.

Electrical fast
transient/burst
IEC 61000-4-4

2 kV for power
supply lines
1 kV for
input/output lines

Mains power quality should be that of

a typical commercial or hospital
environment.

Surge
IEC 61000-4-5

1 kV differential
mode
2 kV common
mode

Mains power quality should be that of

a typical commercial or hospital
environment.

Voltage dips, short

interruptions and
voltage variations
on power supply
input lines.
IEC 61000-4-11

5 % UT
(95 % dip in UT )
for 0.5 cycle

Mains power quality should be that of

a typical commercial or hospital
environment. If that user of the
[EQUIPMENT or SYSTEM] requires
continued operation during power
mains interruptions, it is
recommended that the [EQUIPMENT
or SYSTEM] be powered from an
uninterruptible power supply or a
battery.

40 % UT
(60 % dip in UT )
for 5 cycle
70 % UT
(30 % dip in UT )
for 25 cycle
5 % UT
(95 % dip in UT )
for 5 sec

Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
NOTE

3 A/m

Power frequency magnetic fields

should be at levels characteristic of a
typical location in a typical
commercial or hospital environment.

UT is the a.c. mains voltage prior to application of the test level.

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E7252X / E7252FX / E7252GX

Table 3 Guidance and manufacturers declaration electromagnetic immunity

for LIFE-SUPPORTING EQUIPMENT and SYSTEM (see 6.8.3.201 b))
Guidance and manufacturers declaration - electromagnetic immunity The [EQUIPMENT or SYSTEM] is intended for use in the electromagnetic environment specified
below. The customer or the user of the [EQUIPMENT or SYSTEM] should assure that it is used
such an environment.
IEC60601 test
Compliance
Electromagnetic environment - guidance
Immunity test
level
level
Portable and mobile RF communications
equipment should be used no closer to any
part of the [EQUIPMENT or SYSTEM],
including cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of the
transmitter.
Recommended separation distance
Conducted RF
IEC61000-4-6

Radiated RF
IEC61000-4-3

3 Vrms
150 kHz to 80 MHz
outside ISM bandsa

[V1] V

d = [

10 Vrms
150 kHz to 80 MHz
in ISM bandsa

[V2] V

d = [

10 V/m
80 MHz to 2.5GHz

[E1] V/m

3 .5
]
V1

12

V 2

d = [

12
]
E1

80 MHz to 800 MHz

d = [

23
]
E1

800 MHz to 2.5 GHz

Where P is the maximum output power

rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in meters (m).b
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey,c should be less than the
compliance level in each frequency ranged.
Interference may occur in the vicinity of
equipment marked with the following
symbol:

Continued to the next page.

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E7252X / E7252FX / E7252GX

Note: 1 At 80 MHz and 800 MHz, the higher frequency range applies.
2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, object and people.
a

The ISM (industrial, scientific and medical) bands between 150kHz and 80MHz are 6,765MHz
to 6,795MHz; 13,553MHz to 13,567MHz; 26,957MHz to 27,283MHz; and 40.66MHz to
40.70MHz.

The compliance levels in the ISM frequency bands between 150kHz and 80MHz and in the
frequency range 80MHz to 2.5GHz are intended to decrease the likelihood that
mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 is used in calculating
the recommended separation distance for transmitters in these frequency ranges.

Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the [EQUIPMENT or
SYSTEM] is used exceeds the applicable RF compliance level above, the [EQUIPMENT or
SYSTEM] should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the
[EQUIPMENT or SYSTEM].

Over the frequency range 150kHz to 80MHz, field strengths should be less [V1] v/m.

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E7252X / E7252FX / E7252GX

Table 4 Guidance and manufacturers declaration electromagnetic immunity

for EQUIPMENT and SYSTEM that are not LIFE-SUPPORTING (see 6.8.3.201 b))
Guidance and manufacturers declaration - electromagnetic immunity The [EQUIPMENT or SYSTEM] is intended for use in the electromagnetic environment specified
below. The customer or the user of the [EQUIPMENT or SYSTEM] should assure that it is used
in such an environment.
IEC60601 test
Compliance
Immunity test
Electromagnetic environment - guidance
level
level
Portable and mobile RF communications
equipment should be used no closer to any
part of the [EQUIPMENT or SYSTEM],
including cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of the
transmitter.
Recommended separation distance
Conducted RF
IEC61000-4-6

3 Vrms
150 kHz to 80 MHz

[V1] V

d = [

3 .5
]
V1

Radiated RF
IEC61000-4-3

3 V/m
80 MHz to 2.5GHz

[E1] V/m

d = [

3 .5
]
E1

80 MHz to 800 MHz

d = [

7
]
E1

800 MHz to 2.5 GHz

Where P is the maximum output power

rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey,a should be less than the
compliance level in each frequency rangeb.
Interference may occur in the vicinity of
equipment marked with the following
symbol:

Note: 1 At 80MHz and 800MHz, the higher frequency range applies.

2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, object and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the [EQUIPMENT or
SYSTEM] is used exceeds the applicable RF compliance level above, the [EQUIPMENT or
SYSTEM] should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the
[EQUIPMENT or SYSTEM].
b
Over the frequency range 150kHz to 80MHz, field strengths should be less [V1] v/m.
- 10 -

E7252X / E7252FX / E7252GX

Warning
Warning to Interface with X-ray Generator
1. Housing Rupture
Never input over-rated power to x-ray tube assembly.
If the input power is extremely higher than specification, it may cause the over temperature of
anode, insert tube glass shatter and ultimately the following serious problems due to generating
over-pressure by oil vaporization inside housing assembly.
In such a critical condition, the safety thermal switch can not protect x-ray tube even if it works.
* Housing sealing parts rupture
* Human injury including burns due to hot oil escape
* Fire accident due to flaming anode target
We strongly request that the x-ray generator should have a protective function which manages
input power to x-ray tube assembly.

- 11 -

E7252X / E7252FX / E7252GX

Cautions
Caution to Interface with X-ray Generator
1. Over Rating
X-ray tube assembly can be broken with applying just one over rated shot.
Please read the technical data sheets carefully and follow the instructions.
2. Permanent Filtration
The total filtration and the distance between x-ray focal spot and human body are regulated legally.
They should be complied with the regulation.
3. Safety Thermal Switch
X-ray tube assembly has safety thermal switch to prohibit further input power when the tube
housing reaches to the temperature of switch-open.
The switch should be hooked up with the x-ray generator which control output power to x-ray tube
assembly.
The switch is not recommended connecting stator coil in series circuit.
Even if the switch works, never turn the system power off and the cooling unit should be activated.
4. Unexpected Malfunction
X-ray tube assembly may have the risk to be unexpectedly malfunctioning due to life termination or
failure. If the serious problems caused by the above risk is expected, we recommend to have a
contingency plan to avoid such a case.
5. New Application
If you use the product with new application not to be mentioned in this specification or with different
type of x-ray generator, please contact to us for confirming its availability.

- 12 -

E7252X / E7252FX / E7252GX

Caution for Installation, Adjustment and Maintenance

1. Qualified Persons
Only qualified persons who have technical training and professional knowledge can handle x-ray
tube assembly.
2. Fragile Glass
X-ray tube is assembled with glass, therefore, it can be broken with the mechanical vibration or
pulsed shock over 19.6m/s2 (2G).
Careful handling is required to treat or transport.
3. Ground Terminal
X-ray tube assembly has ground terminal. Ground cable should be connected.
4. High Voltage
All x-ray tubes operate at voltages high enough to kill through electrical shock. Never touch the
high voltage delivered plugs or terminals.
When direct access to such parts is required, the primary circuit should be disabled and high
voltage capacitors/cables discharged.
5. High Voltage Plug
High voltage plug should be cleaned up and free from any physical damages. Silicon compound
application is required for high voltage stability.
6. Operation Atmosphere
X-ray tube assembly is not allowed to use in the atmosphere of flammable or corrosive gas.
7. Protective Cover
X-ray tube assembly is not allowed to use without the protective cover attached.
8. Handling
Appropriate jig or tools are required for tube installation to avoid physical damages.
9. Returning Tube
X-ray tube assembly should be repackaged with the original material when it is returned back for
quality examination in our factory.
Be careful to put the tube upside cathode.

If the packaging is not proper, the tube may not be

correctly examined.

- 13 -

E7252X / E7252FX / E7252GX

Caution in Operation
1. X-Ray Radiation
X-ray tube assembly should have the beam limiting equipment mounted on the x-ray port to protect
unnecessary radiation.
2. Dielectric Oil
X-ray tube assembly has dielectric oil contained for high voltage stability. As it is poisonous for
human health, if it is exposed to the non-restricted area, it should be disposed as following to the
local regulation.
3. Operation Atmosphere
X-ray tube assembly is not allowed to use in the atmosphere of flammable or corrosive gas.
4. Lead Disposition
X-ray tube housing is lined with lead to protect unnecessary radiation. As the lead powder or vapor
is harmful for human health, it should be disposed as following to the local regulation or returned
back to us with your cost of transportation. We dispose it in our facility with free of charge.
5. X-ray tube housing temperature
Do not touch on X-ray tube housing surface just after operation due to high temperature.
Stay X-ray tube to be cooled.
6. Any Malfunction
Please contact to your system service person immediately, if any malfunction is noticed.

- 14 -

E7252X / E7252FX / E7252GX

Caution Label
(a) This label is a caution label to notify the user of the following point.
"Housing end cap is used to protect the electric shock and x-ray leakage."
Attachment position : X-ray tube assembly housing end cap

- 15 -

E7252X / E7252FX / E7252GX

Maximum Rating Charts

(Absolute Maximum Rating Charts)
Conditions : Tube Voltage Three-Phase
Stator Power Frequency 180Hz
Focal Spot : 1.2 mm
1000
900

80kV

70kV 60kV 50kV

400

90kV
100kV

350

40kV

TUBE CURRENT [mA]

800 110kV

TUBE CURRENT [mA]

Focal Spot : 0.6 mm

700 125kV
600 150kV
500
400
300

70kV

60kV

80kV

50kV

90kV
40kV

300 100kV
110kV
250 125kV
200 150kV
150
100

200
50

100
0
0.01

0.03
0.1
0.02
0.05

0.2 0.3 0.5

0
0.01

10

0.03
0.1
0.02
0.05

EXPOSURE TIME [s]

0.2 0.3 0.5

10

10

EXPOSURE TIME [s]

Conditions : Tube Voltage Three-Phase

Stator Power Frequency 60Hz
Focal Spot : 1.2 mm
60kV

700

70kV

600

80kV

50kV

40kV

300

250

TUBE CURRENT [mA]

TUBE CURRENT [mA]

800

Focal Spot : 0.6 mm

90kV
500 100kV
110kV
400 125kV
300

150kV

200

40kV

0.2 0.3 0.5

70kV
80kV

200

90kV
100kV
110kV
150
125kV
150kV
100

50

100
0
0.01

50kV
60kV

0.03
0.1
0.02
0.05

0.2 0.3 0.5

0
0.01

10

EXPOSURE TIME [s]

0.1
0.03
0.02
0.05

EXPOSURE TIME [s]

- 16 -

E7252X / E7252FX / E7252GX

Emission & Filament Characteristics

Three-Phase
Focal Spot : 1.2 mm
1000
900

150kV

14

700
12

600
Ef
500

80kV

400

10

60kV

300

40kV
8

200

FILAMENT VOLTAGE [V]

125kV

800

TUBE CURRENT [mA]

16

100kV

100
0
3.9

6
4.1

4.3

4.5

4.7

4.9

5.1

5.3

5.5

FILAMENT CURRENT [A]

Focal Spot : 0.6 mm

400

10
100kV

300

150kV

Ef
200

80kV
100

60kV
40kV

0
3.6

3.8

4.0

4.2

4.4

4.6

4.8

FILAMENT CURRENT [A]

- 17 -

5.0

2
5.2

FILAMENT VOLTAGE [V]

TUBE CURRENT [mA]

125kV

E7252X / E7252FX / E7252GX

Thermal Characteristics
Housing Thermal Characteristics
900

200W

HEAT STORAGE [kJ]

800
700
600
500
400

COOLING

300
200
100

HEATING

0
0

60

120

180

240

300

360

TIME [min]

Anode Thermal Characteristics

210
200

475W(667HU/S)
COOLING

180

HEAT STORAGE [kJ]

160
140
120
100
80
60
40

HEATING

20
0

10

TIME [min]
The heating curves are showing examples of
average input power to the anode in operation.

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12

E7252X / E7252FX / E7252GX

Dimensional Outline of E7252X

Unit mm

134.5

476

90

50.8
4-M5 10 DEEP

CATHODE

105

11.1

90

CENTRAL RAY AND REFERENCE AXIS

12

11.1

152.4

ANODE

146.5

4-M6 8 DEEP

2-M63.5
P=1.27

90

140

18.28

TERMINAL CONNECTIONS
9 8 7 6 5

FOCAL SPOT

1 2 3 4 E

NC NC NC

53

NC

81

10

192

ET
TEMPERATURE RELAY
(NORMALLY CLOSED)

70

Note) Do not connect terminal No.1 and No.5 or 6

in series circuit.

CENTRAL OF FOCAL SPOT

71

191

A1.5mmB1.5mm
NC : NON-CONNECTION
ET : EARTH TERMAINAL
: CENTERAL X-RAY
ANODE & CATHODE TERMINAL
: IEC 60526 TYPE

C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR

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E7252X / E7252FX / E7252GX

Dimensional Outline of E7252FX

Unit mm

90

140

2-M63.5
P=1.27

4-M6 8DEEP

50.8
90

476

11.1

146.5

152.4

92
45

4-M5 10DEEP
90

11.1

134.5

12

CENTRAL RAY AND REFERENCE AXIS

ANODE

CATHODE
105

1 2 3

NC NC NC

FOCAL SPOT

4 E

10

9 8 7 6 5

18.28

TERMINAL CONNECTIONS

81

NC
A

TEMPERATURE RELAY
(NORMALLY CLOSED)

ET

192

53

70

Note) Do not connect terminal No.1 and

No.5 or 6 in series circuit.

CENTRAL OF FOCAL SPOT

71
191

B
A1.5mmB1.5mm

NC : NON-CONNECTION
ET : EARTH TERMINAL
: CENTRAL X-RAY
ANODE & CATHODE TERMINAL
: IEC60526 TYPE

C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR

- 20 -

E7252X / E7252FX / E7252GX

Dimensional Outline of E7252GX

Unit mm
70

TERMINAL CONNECTIONS
9 8 7 6 5

1 2 3 4 E
NC
M A

FOCAL SPOT

81

Note) Do not connect terminal No.1 and

No.5 or 6 in series circuit.

71

191

ET

TEMPERATURE RELAY
(NORMALLY CLOSED)

18.28

53

CENTRAL OF FOCAL SPOT

10

NC NCNC

B
A1.5mmB1.5mm

90

92

45

11.1

134.5
105
C : COMMON
L : LARGE FOCUS
S : SMALL FOCUS
M : MAIN WINDING OF THE STATOR
A : AUX. WINDING OF THE STATOR

50.8
90

11.1

146.5

4-M6 8DEEP

476

CENTRAL RAY AND REFERENCE AXIS

ANODE

152.4

12

140

4-M5 10DEEP

90

CATHODE

NC: NON-CONNECTION
ET : EARTH TERMINAL
ST : SHIELD TERMINAL (at cable cramp)
: CENTRAL X-RAY
ANODE & CATHODE TERMINAL
: IEC 60526 TYPE

- 21 -

E7252X / E7252FX / E7252GX

OVERSEAS SUBSIDIARIES AND AFFILIATES

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FAX (0) 1276 694800
For Sales & Technical Services, please contact the following representative:

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Toshiba Electron Tubes & Devices Co., Ltd.

meets the Environmental Management
System Standard, ISO 14001

Toshiba Electron Tubes & Devices Co., Ltd. meets

internationally recognized Standards for Quality
Management System ISO 9001, ISO 13485