Raychem Rayflate Duct Sealing System RDSS
for Power Cables
Raychem Rayflate Duct Sealing System RDSS for Power Cables
Unsealed cable pipes and ducts need
not to cause dampness and flooding
in substation basements, cable vaults
and access manholes.
In these environments rust, corrosion
and a humid environment inevitably
result in damage to support structures,
metal work and electrical equipment.
The most common route for water to
enter into such installations can be
blocked simply and effectively by a
field proven technique developed by
Raychem.
The Raychem Rayflate Duct Sealing
System RDSS has been designed for
use on power cables to provide a
watertight seal when used with plastic, concrete or steel ducting systems.
Once installed the Rayflate duct seals
can provide operators with immediate
access in clean and dry conditions,
eliminating the routine of pumping
manholes dry before work can begin.
Eliminates the need to pump
manholes dry, avoids ingress of mud
into ducts, and withstands severely
polluted environments.
Clean, fast, easy sealing method
The Rayflate seal consist of an
inflatable bladder of flexible metallic
laminate, coated on both sides with
a sealant strip. With the sealant strips
lubricated, the product is simply
wrapped around the cable and easily
slides into the duct. The bladder is
then inflated with a gas pressure tool
which presses the sealant coating
against the duct wall and the cable.
Upon removal of the filling tube, an
automatic gel valve system reliably
retains the gas pressure in the Rayflate
duct seal.
The entire installation is performed
within a few minutes – even in
congested enclosures – without any
messy or installer-sensitive mixing
and filling.
Each Rayflate seal covers a large
range of cable and duct diameters.
Ideal for both new and existing
cable installations
The versatility of the wraparound
concept enables use not only for new
cable installations, but also for existing
applications. Unlike other methods
that require dry ducts, the Rayflate
seals can be installed when water is
still flowing out of the duct – thus
saving valuable installation time.
Removable
Rayflate seals are easier to be
removed from a duct or a pipe than
other systems. This allows cables to
be replaced in an upgrade or repair.
Since ducts are not damaged by the
Rayflate system, they can easily be
sealed again.
Environmentally friendly
Rayflate seals do not require any
mixing of liquids, thus eliminating
typical hazards involved in preparation
of 2-component resin systems, and
the need for costly disposal of harmful
residues or messy containers.
Seals vacant and multiple cable
ducts
Depending on the duct diameter, most
Rayflate bags seal vacant ducts and
ducts which contain up to two cables.
Sealing of three or more cables can
be easily achieved by merely inserting
a mastic sealant-clip between the
cables. The Raychem RDSS-Clip is
made from a high-temperature mastic
mounted on an installation stick.
Empty gas cylinders or the lubricant
bottles will be recycled when disposed
in metal scrap or PE/PP collection
containers, respectively. Residuals of
the lubricant are treated as normal
waste water.
Performance Tested
Rayflate duct seals are a result of
our long involvement in sealing and
corrosion protection technologies.
Versatility
As the Rayflate system adapts itself
to most configurations, the system is
independent of duct ovality.
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TE Connectivity
Raychem Rayflate Duct Sealing System RDSS for Power Cables
Extensive testing at room temperature
has shown water and air tightness at
static pressures of more than 0.3 bar,
even in conjunction with cable
bending, vibration, torsion and axial
pull. Resistance to common chemicals
has been proven by immersion tests.
Tools for easy and quick inflation
Rayflate duct seals can be installed using a wide variety of inflation tools, which
have the capability to inflate the bag to 3.0 ± 0.2 bar pressure.
As the Rayflate system is specially
designed for power cables, it was
tested with cables load-cycled at
conductor temperatures of 90°C,
similar to specifications required for
cable accessories. The sealing tests
showed water and air tightness with
internal duct pressures of 0.3 bar with
single and multi-cable configurations.
A detailed test report is available.
RDSS-IT-16:
Inflation tool complete with an
ON/OFF switch and an automatic
pressure monitoring system.
The required CO2 gas cylinders
(E7512-0160) must be ordered
separately. The standard package
includes 1 tool per box plus operating
manual and a 3-year warranty.
Lifetime calculations indicate that a
typical Rayflate duct seal will withstand a 3 m waterhead for 30 years
after installation. These results are
based on typical utility cable loads
at average ambient temperatures of
25°C and diffusion rate measurements
at elevated temperatures and after
ageing by load-cycling. The sealing
performance was confirmed by
sealing tests with reduced internal
bladder pressures.
E7512-0160:
16 gr. CO2 gas cylinders for RDSS-IT-16
tool. Each gas cylinder inflates approx.
5 pcs of RDSS-100 duct seals. Each
box contains 10 gas cylinders.
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We offer two inflation tools, using either a CO2 cartridge or the customers’ own
source of compressed air. Both tools feature an easy-to-read gauge and a
release valve to ensure proper inflation pressure:
RDSS-IG-SR-AS:
Inflation tool using a pressure bottle,
an air-compressor or a main air
pressure line with pressure input
between 4 bar and 10 bar. Features
automatic shutoff, a VG8 valve
connection and two alternative
connections for plastic or rubber
hoses.
The standard package includes 1 tool
per box plus operating manual.
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Raychem Rayflate Duct Sealing System RDSS for Power Cables
TE Connectivity
Ordering Information and Selection Table
Product description
D
D
Cable or cable bundle diameters:
For each clip used, subtract 5 mm from
the maximum cable diameter shown in
the table to determine the maximum
cable bundle diameter.
When three or more cables have to be
sealed, an Raychem RDSS-Sealing-Clip is
used in combination with the
RDSS-Inflatable duct seal.
One RDSS-Clip seals up to 4 cables.
If more cables are to be sealed, use one
extra clip per three additional cables as
shown in the following examples for
different multi-cable configurations:
Duct
inside dia.
32.5
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
155
160
165
170
175
180
>180**
Clip
Selection
RDSS-45
cable dia.
0 – 14
0 – 18
0 – 27
0 – 32
RDSSClip-45
RDSS-60
cable dia.
0
0
0
0
–
–
–
–
18
30
38
45
RDSSClip-75
RDSS-75
cable dia.
0
0
0
0
0
–
–
–
–
–
28
30
40
46
56
RDSSClip-75
RDSS-100
cable dia.
0
0
0
0
0
0
0
0
55
60
–
–
–
–
–
–
–
–
–
–
45
52
60
66
74
80
85
90
95*
100*
RDSSClip-100
RDSS-125
cable dia.
0
0
0
0
0
0
70
75
80
85
90
–
–
–
–
–
–
–
–
–
–
–
65
75
83
91
95
103
110*
115*
120*
125*
130*
RDSSClip-125
RDSS-150
cable dia.
60
60
60
60
60
60
60
60
105
110
115
120
–
–
–
–
–
–
–
–
–
–
–
–
100
107
112
118
123
129
134*
139*
145*
150*
155*
160*
RDSSClip-150
Suitable also for empty ducts
Only with cables
*RDSS-Clips must also be used for 2-cable configurations
Each RDSS-Seals empty ducts (except for size 150) and ducts containing up to 2
cables. The table above shows the minimum and maximum diameter of the cable or
of the sum of 2 cables depending on the duct size. Dimensions in mm.
While TE Connectivity (TE) has made every reasonable effort to ensure the accuracy of the information in this catalog, TE does not guarantee that it is error-free, nor does TE make any other representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any adjustments to the information contained herein at any
time without notice. TE expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability or fitness
for a particular purpose. The dimensions in this catalog are for reference purposes only and are subject to change without notice. Specifications are subject to change without notice.
Consult TE for the latest dimensions and design specifications. Raychem, TE Connectivity and TE Connectivity (logo) are trademarks. Other logos, product and company names mentioned
herein may be trademarks of their respective owners.
TE Energy – innovative and economical solutions for the electrical power industry: cable accessories, connectors & fittings,
insulators & insulation, surge arresters, switching equipment, street lighting, power measurement and control.
Tyco Electronics Raychem GmbH
a TE Connectivity Ltd. Company
TE Energy
Finsinger Feld 1
85521 Ottobrunn/Munich, Germany
Phone: +49-89-6089-0
Fax: +49-89-6096345
energy.te.com
© 2013 Tyco Electronics Raychem GmbH EPP 0569 4/13
All Rayflate-RDSS sizes are packed in boxes of 10 pieces with 1 lubricant dispenser and an installation instruction.
RDSS-Clips are packed in boxes of 5 pieces. RDSS-Clips must be ordered as a separate item.
** For more specific information on cable diameter ranges and for duct sizes
> 180 mm contact your local sales representative.