Mineral insulated signal transmission cables:
Cables for transmission of HF signals
These cables are intended for transmission of high
frequency signals. Two types have been
developed :
coaxial cable with composite shielding : an iron
layer in the shielding reduces the transfer
impedance of the cable,
triaxial cable : this is a coaxial cable with a
supplementary sheath by which the cable is
insulated from ground.
Type
Triaxial cable for
frequencies < 30 kHz
Triaxial
1 Ac (Ac) Ac 20
1 Zs FCAc 60
1 Zs AcCAc 40
Sheath
Stainless
Steel 304l
Iron - CopperStainless Steel 304L
Stainless steel 304L-CopperStainless steel 304l
Conductor
Stainless
Steel 304L
ZIrconium copper coated
stainless steel 304L
Zirconium copper coated
stainless steel 304L
Magnesia >94%
Magnesia >94%
Magnesia >94%
Material
Insulant
Coaxial
Electrical characteristics
>/= 1013 ohms.m at room temperature
>/= 1010 ohms.m at 300°C
Data subject to alteration without notice - THERMOCOAX SAS - RCS CONDE s/NOIREAU B 323 459 925 - VAT Nr : CEE FR 32 323 459 92
Insulation resistance
(500VDC)
Line capacitance
≈ 350 pF/m
≈ 200 pF/m
≈ 250 pF/m
Line resistance
16 ohms/m
0.35 ohm/m
0.13 ohm/m
Breakdown voltage
>500V AC
>1 500 V AC
> 2 000 V AC
2 ± 0.03
6 ± 0.05
4 ± 0.05
Outer sheath thickness (mm)
0.32 ± 0.04
2.9 ± 0.15
2.25 ± 0.15
Inner sheath diameter (mm)
0.9 ± 0.1
-
-
Inner sheath thickness (mm)
0.12 ± 0.04
-
-
Conductor diameter (mm)
0.25 ± 0.05
0.40 ± 0.1
0.60 ± 0.2
Manufacturing length (mm)
From 100 to 200 m
From 9 to 12 m
From 20 to 30 m
Dimensions
Outer Diameter (mm)
The transfer impedance
The level of protection is given by
the transfer impedance of the
cable i.e. by the ratio between
the signal voltage picked up by
the central wire and the current
flowing on the outer shield.
The lower the impedance is, the
better the protection from
interference.
Coaxial cable for
frequencies > 30 kHz
E003-2
Sales : 40 Bd Henri Sellier - F 92156 SURESNES Cedex - Tel.: +33 (0)1 41 38 80 50 - Fax :+33 (0)1 41 38 80 70
www.thermocoax.com - info@thermocoax.com
SiO2 insulated signal transmission cables:
Low capacitance
These cables are assigned to
be used at very high
temperature (600°C) and
under very aggressive media.
They are specifically suitable
for the transmission of hyper
frequency signals up to 20
GHz.
Radars, civil or military
transmitters, equipment for
television, satellite broadcasting,
electronic devices for medical,
nuclear… are among the
possible fields of applications for
this kind of THERMOCOAX
cables.
Their design gives them
exceptional mechanical and
electrical features to facilitate
their use. As for instance, the
standing wave ration (SWR) is
only <17.7 dB and complies
with the MIL-T81492 standard.
Moreover, the attenuation of this
cable remains very low at 0.5
Db/m/GHz up to 20 GHz for an
outer diameter of 3 mm.
Type 1 C CAc 10 Si
1 C CAc 15 Si
1 C CAc 20 Si
1 C CAc 30 Si
1 C CAc 36 Si
1 C CAc 40 Si
Materials of Construction
Conductor
Copper
Inner Jacket
Copper
Outer sheath
Stainless Steel 304L or Inconel 600
Electrical data
Data subject to alteration without notice - THERMOCOAX SAS - RCS CONDE s/NOIREAU B 323 459 925 - VAT Nr : CEE FR 32 323 459 92
Characteristic Impedance
50
Line resistance Ω/m (Ω/feet)
1 (0.3)
Insulation resistance at 20°C [ohm.m]
≥ 1013
50
0.45
(0.13636)
≥ 1013
Insulation resistance at 350°C [ohm.m]
≥ 107
≥ 107
≥ 107
≥ 107
≥ 107
≥ 107
Insulation resistance at 600°C [ohm.m]
≥ 10
≥ 10
≥ 10
≥ 10
≥ 10
≥ 103
Capacitance at 20°C [pF/m]
100
Operating frequency
High frequency losses - 100 MHz (dB/meter)
Max voltage withstand RMS
3
3
100
50
0.25
(0.075757)
≥ 1013
50
0.12
(0.03636)
≥ 1013
50
0.06
(0.01818)
≥ 1012
50
0.03
(0.00909)
≥ 1012
3
100
3
100
3
120
120
up to 20 Ghz
0.08
0.08
0.08
0.08
0.08
0.08
300
500
800
1000
1500
1500
120dB
120dB
120dB
120dB
120dB
120dB
Weigth [gr/meter]
0.18
(0.007)
1
(0.03937)
15
0.25
(0.009842)
1.5
(0.059055)
40
0.31
(0.0122)
2
(0.07874)
70
0.44
0.6
0.8
(0.017323) (0.023622) (0.031496)
3
3.6
4
(0.11811) (0.14173)
(0.15748)
170
230
290
Length [meter]
10 to 80 m
10 to 60 m
10 to 60 m
10 to 60 m
EMI Shielding
Geometry
Inner conductor mm (inch)
Outer sheath mm (inch)
20 to 60 m
up to 50 m
Environmental Data
Operating Temperature Range
Vibration
Acceleration
Pyrotechnic Shock
Zero absolute up to 1000°C (1832°F)
20 G, 2000 Hz
50G
7 000 g, 10 KHz
E004-3
Sales : 40 Bd Henri Sellier - F 92156 SURESNES Cedex - Tel.: +33 (0)1 41 38 80 50 - Fax :+33 (0)1 41 38 80 70
www.thermocoax.com - info@thermocoax.com
SiO2 insulated signal transmission cables: Low capacitance
Particular specifications
On request, the THERMOCOAX
cables can be submitted to several
tests such as :
•
•
•
•
helium leak test,
steam tightness test,
material analysis,
electrical and metallurgical
tests,
according to specifications
stipulated by the customer and
af ter disc u ssio n w ith the
THERMOCOAX technical team.
Stainless steel or
Inconel® sheath
Copper Jacket
SiO2 insulator
Copper conductor
Data subject to alteration without notice - THERMOCOAX SAS - RCS CONDE s/NOIREAU B 323 459 925 - VAT Nr : CEE FR 32 323 459 92
E004-3
Sales : 40 Bd Henri Sellier - F 92156 SURESNES Cedex - Tel.: +33 (0)1 41 38 80 50 - Fax :+33 (0)1 41 38 80 70
www.thermocoax.com - info@thermocoax.com
SiO2 insulated signal transmission cables:
Low capacitance
These cables are assigned to
be used at very high
temperature (600°C) and
under very aggressive media.
They are specifically suitable
for the transmission of hyper
frequency signals up to 20
GHz.
Radars, civil or military
transmitters, equipment for
television, satellite broadcasting,
electronic devices for medical,
nuclear… are among the
possible fields of applications for
this kind of THERMOCOAX
cables.
Their design gives them
exceptional mechanical and
electrical features to facilitate
their use. As for instance, the
standing wave ration (SWR) is
only <17.7 dB and complies
with the MIL-T81492 standard.
Moreover, the attenuation of this
cable remains very low at 0.5
Db/m/GHz up to 20 GHz for an
outer diameter of 3 mm.
Type 1 C CAc 10 Si
1 C CAc 15 Si
1 C CAc 20 Si
1 C CAc 30 Si
1 C CAc 36 Si
1 C CAc 40 Si
Materials of Construction
Conductor
Copper
Inner Jacket
Copper
Outer sheath
Stainless Steel 304L or Inconel 600
Electrical data
Data subject to alteration without notice - THERMOCOAX SAS - RCS CONDE s/NOIREAU B 323 459 925 - VAT Nr : CEE FR 32 323 459 92
Characteristic Impedance
50
Line resistance Ω/m (Ω/feet)
1 (0.3)
Insulation resistance at 20°C [ohm.m]
≥ 1013
50
0.45
(0.13636)
≥ 1013
Insulation resistance at 350°C [ohm.m]
≥ 107
≥ 107
≥ 107
≥ 107
≥ 107
≥ 107
Insulation resistance at 600°C [ohm.m]
≥ 10
≥ 10
≥ 10
≥ 10
≥ 10
≥ 103
Capacitance at 20°C [pF/m]
100
Operating frequency
High frequency losses - 100 MHz (dB/meter)
Max voltage withstand RMS
3
3
100
50
0.25
(0.075757)
≥ 1013
50
0.12
(0.03636)
≥ 1013
50
0.06
(0.01818)
≥ 1012
50
0.03
(0.00909)
≥ 1012
3
100
3
100
3
120
120
up to 20 Ghz
0.08
0.08
0.08
0.08
0.08
0.08
300
500
800
1000
1500
1500
120dB
120dB
120dB
120dB
120dB
120dB
Weigth [gr/meter]
0.18
(0.007)
1
(0.03937)
15
0.25
(0.009842)
1.5
(0.059055)
40
0.31
(0.0122)
2
(0.07874)
70
0.44
0.6
0.8
(0.017323) (0.023622) (0.031496)
3
3.6
4
(0.11811) (0.14173)
(0.15748)
170
230
290
Length [meter]
10 to 80 m
10 to 60 m
10 to 60 m
10 to 60 m
EMI Shielding
Geometry
Inner conductor mm (inch)
Outer sheath mm (inch)
20 to 60 m
up to 50 m
Environmental Data
Operating Temperature Range
Vibration
Acceleration
Pyrotechnic Shock
Zero absolute up to 1000°C (1832°F)
20 G, 2000 Hz
50G
7 000 g, 10 KHz
E004-3
Sales : 40 Bd Henri Sellier - F 92156 SURESNES Cedex - Tel.: +33 (0)1 41 38 80 50 - Fax :+33 (0)1 41 38 80 70
www.thermocoax.com - info@thermocoax.com
SiO2 insulated signal transmission cables: Low capacitance
Particular specifications
On request, the THERMOCOAX
cables can be submitted to several
tests such as :
•
•
•
•
helium leak test,
steam tightness test,
material analysis,
electrical and metallurgical
tests,
according to specifications
stipulated by the customer and
af ter disc u ssio n w ith the
THERMOCOAX technical team.
Stainless steel or
Inconel® sheath
Copper Jacket
SiO2 insulator
Copper conductor
Data subject to alteration without notice - THERMOCOAX SAS - RCS CONDE s/NOIREAU B 323 459 925 - VAT Nr : CEE FR 32 323 459 92
E004-3
Sales : 40 Bd Henri Sellier - F 92156 SURESNES Cedex - Tel.: +33 (0)1 41 38 80 50 - Fax :+33 (0)1 41 38 80 70
www.thermocoax.com - info@thermocoax.com