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Cold Shrink ™
8560 Series Silicone Rubber 3/C Cable Breakout Boots
Data Sheet
Features and Benefits
¥ Versatile; installs quickly and accommodates a widerange of cable sizes.
¥ Simple hand application; no need for special
installation tools.
¥ No torches or heat required.
¥ No specific user skills or craftsmanship required.
¥ Excellent resistance to ozone and ultra-violet radiation.
¥ Good solvent resistance; compatible with industry-approved cable cleaners.
¥ Excellent thermal stability.
¥ High dry and wet insulation resistance.
¥ Highly flexible; accommodates all power cablesupplier bend radius recommendations.
¥ Seals tight; retains resiliency and pressure even after prolonged years of aging and exposure.
¥ Compatible with all 3M Cold Shrink TerminationProducts and RJS Series Phase Rejacketing Sleeves.
Kit Configuration:
One each poly-bagged breakout boot assembly withinstallation instructions; one poly bag per carton.
2.0 Applications
3M 8560 Series Breakout Boots are used to protect the phase breakout area of three conductor medium voltage power cable from moisture & contamination penetration after the
jacket has been removed in preparation for terminating.
8560 Series Breakout Boots accommodate cable sizesranging from No. 8 AWG (8 mm2) @ 3.3 kV to 500 KCMil(240 mm2) @ 36 kV.
Five sizes are available to cover cable metallic shielddiameters ranging from 0.48" (12.1 mm) to 1.94" (49.3mm) and cable jackets ranging from 1.30" (33.0 mm) to4.7" (119.4 mm).
1.0 Product Description
3M 8561 through 8565 Silicone Rubber Cold Shrink CableBreakout Boots are a series of open-ended molded rubber sealing assemblies that are factory expanded and mountedon removable inner supporting plastic cores. They aresupplied for field installation in a pre-stretched condition.The supporting cores are removed after the seal has been
positioned for installation around the breakout area of a3/C (three conductor) cable. Core removal allows thesilicone rubber boot to shrink down to a pre-determineddiameter; creating an environmental enclosure for individual cable phase legs and the overall cable jacket
8560 Series Breakout Boots are designed to protect the phase leg breakout area of 3/C medium voltage shielded power cable from exposure to moisture, contamination,corrosion, ozone, ultra-violet radiation, physical contact
and other hazards associated with 3/C terminationoperating environments.
8560 Series Breakout Boots can be used in conjunctionwith 3M Silicone Rubber Cold Shrink TerminationAssemblies and RJS Series Phase Rejacketing Sleeves for 3/C shielded power cable terminating applications.
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8560 Breakout Boot Selection Guide - Based on Diameter Range & Cable Conductor Size
Product Cable Shield* Cable Jacket 3.3 kV 3.3 kV 5.0 kV 6.6 kV 6.6 kV 8.0 kVNumber Diameter Range Diameter Range (mm2) (mm2) (AWG) (mm2) (mm2) (AWG)
(Finger [A]) (Neck [B]) IEC JIS AEIC IEC JIS AEIC
8561 0.48—0.72" 1.30—1.94" 16—35 8—22 8—2 16—25 8—10 6—4
12.2—18.3 mm 33.0—49.3 mm
8562 0.61—0.95" 1.46—2.67" 50—95 38—60 1—3/0 35—70 14—38 2—2/0
15.5—24.1 mm 37.1—67.8 mm
8563 0.82—1.18" 1.92—3.10" 120—185 100—150 4/0—400 95—150 60—100 3/0—350
20.8—30.0 mm 48.8—78-7 mm
8564 1.02—1.63" 2.52—4.32" 240—300 200—250 500—750 185—300 150—250 400—600
25.9—41.4 mm 64.0—109.7 mm
8565 1.09—1.94" 2.60—4.70" 300—325 800—1000 300—325 750—1000
27.7—49.3 mm 66.0—119.4 mm
Product Cable Shield* Cable Jacket 10 kV 15 kV 20 kV 25 kV 30 kV 35 kVNumber Diameter Range Diameter Range (mm2) (AWG) (mm2) (AWG) (mm2) (AWG)
(Finger [A]) (Neck [B]) IEC AEIC IEC AEIC IEC AEIC
8561 0.48—0.72" 1.30—1.94"12.2—18.3 mm 33.0—49.3 mm
8562 0.61—0.95" 1.46—2.67" 10—50 2—1
15.5—24.1 mm 37.1—67.8 mm
8563 0.82—1.18" 1.92—3.10" 70—150 1/0—4/0 25—70 2—1/0
20.8—30.0 mm 48.8—78.7 mm
8564 1.02—1.63" 2.52—4.32" 185—300 250—450 95—185 2/0—250 35—70 1/0—3/0
25.9—41.4 mm 64.0—109.7 mm
8565 1.09—1.94" 2.60—4.70" 500—750 240—300 300—500 95—240 4/0—500
27.7—49.3 mm 66.0—119.4 mm
IEC=International Electrotechnical Commission JIS=Japanese Industrial Standard AEIC=Association of Edison Illuminating Companies
Approximate Installed Length [L]
8561—5.00" (127 mm)
8562—5.00" (127 mm)
8563—6.00" (152 mm)
8564—8.25" (210 mm)
8565—8.25" (210 mm)
CableShield
Finger [A] Finger [A]Seals over
Cable Shield[L]
Neck [B]
Jacket
Neck [B]Seals over
Cable Jacket
*When applicable, shield diameter ranges must be adjusted to account for ground strap thickness.
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3.1 Ratings
8560 Series Cable Breakout Boots can can be used oncables with a continuous operating temperature of 90¼Cand an emergency overload temperature of 130¼C.
When used in combination with 3M Cold Shrink ™
Terminations, 8560 Series Breakout Boots meet, or exceed, the current rating of the cable on which they have
been applied.
According to IEEE Standard 48-1996 definition, a 3/C
Class I Termination designation is achieved by combiningthree easy-to-use accessories: (a) 3M Cold Shrink Breakout Boot, (b) RJS Rejacketing Sleeves and (c) ColdShrink Silicone Rubber Termination Assemblies.
3.2 Material Characteristics
Hydrophobicity
When airborne contaminants are deposited on atermination surface destructive leakage currents caninitiate when the surface becomes wet. Fog and drizzleare normally considered to be worse than rain as thesetwo forms of precipitation can combine with accumulated
surface contaminants to reduce surface resistivity and promote leakage current formation. Rain tends to washthe pollutants off the termination surface.
Silicone 8560 Series Breakout Boots are hydrophobic;tending to reject moisture accumulation and thereby,reducing the probability for discharge-initiated materialerosion and tracking.
Severe environmental conditions that are sustained for longtime periods can cause any polymeric surface to lose itshydrophobicity. EPDM polymers and others tend to losetheir hydrophobic nature over time. Porcelain surfaces
become increasingly hydrophilic with time which can resultin premature failure or flashover. Silicone surfaces can
regenerate their hydrophobic nature. This unique ability isa major factor for ensuring a long service life.
Ozone, Heat and UV Resistance
One of the most outstanding physical characteristics of silicone rubber is its retention of desirable properties over a very wide temperature range.
While there are applications that take advantage of thesetemperature extremes, a more attractive feature might bethat of its extremely long life expectancy at moderateoperating temperatures.
The silicone polymer molecular backbone, silicon-oxygenlinkage, provides the same strong -Si-O-Si- type bondoccurring in quartz, sand and glass. This accounts for theoutstanding temperature properties of silicones and their resistance to oxidation by ozone, corona and weathering.Polymer chains from organic rubber materials often havedouble carbon bond molecular backbones which arequickly cleaved by ozone, light, heat or other influencesfound in the operating environment.
Water Seal
To determine material water sealing capability, samples of 8560 breakout boots were installed on non-shielded 3/Ccable and submersed for a two week period.
Resistance recorded between cable armor and surrounding
water ranged from 0.8 x 109 ohms to 2.0 x 109 ohms at1000 volts at the end of the two week period.
4.0 Specifications
4.1 Product
The 3M 8560 Series Cable Breakout Boot is onecomponent of a 3/C cable termination and as such, mustconform to all internationally recognized termination
performance standards; specifically to VDE 0278, CenelecHD629.1 S1, and the Class I designation of IEEE Standard48-1996. Cable Breakout Boots shall be made of track-resistant silicone rubber, dark gray in color and shall be
supplied in the form of a one-piece assembly for handapplication. Installation shall require no flame, heat sourceor specialized tools.
3.0 Typical Physical and Electrical Properties—Silicone Rubber Breakout Boot
Breakout Boot Assembly Property Typical Value Reference
Physical
Color Dark Gray N/A
Tear Resistance (Die B) 149 psi (1.03 Mpa) ASTM D-624 B
Ultimate Tensile Strength 1370 psi (09.5 Mpa) ASTM D-412
Modulus @ 100% Stretch 125 psi (0.86 Mpa) ASTM D-412
Ultimate Elongation 780% ASTM D-412
Permanent Set (22 hrs @ 8% 3M Test Method
100o C & 100% Stretch)
Temperature Rating 180o C (Class H) ASTM D-2000
Electrical
Max. Voltage Class Rating 36 kV N/A
(Termination Based)
Dielectric Strength @ 0.065" 587 V/mil (23 kV/mm) 3M Test Method
Track Resistance 6+ Hours ASTM D-2303/ IEC 587
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4.2 Engineering/Architectural
Seal and protect the cable phase (core) breakout area of all 3/C, 3.3 kV through 36 kV Class, cable in accordancewith the instructions provided in 3M™ 8560 SeriesSilicone Rubber Breakout Boot Product Kits.
5.0 Installation Technique
Detailed instructions are included in each kit to provideinstaller with all information required to properly install theappropriately sized 3M 8560 Series Breakout Boot Product.
A brief summary of the installation steps for 3/C power cable is outlined below.
6.0 Maintenance
Hypotting
Termination designs incorporating 8560 Series SiliconeRubber Breakout Boots can be field tested by usingnormal cable testing procedures (reference: ANSI/IEEEStandard 400 ÒGuide for Making High-Direct-Voltage
Tests on Power Cable Systems in the FieldÓ).
Surface Cleaning
8560 Series Breakout Boot Products are not harmed byfield surface cleaning. Established techniques for cleaninginsulators and terminations, such as high pressure water or
pulverized corn cobs, are acceptable. It should be notedhowever, that only extreme areas of environmentalcontamination should require this kind of attention.
7.0 Shelf LifeWhile 8560 Series Breakout Boot Products are not expectedto deteriorate during extended storage periods, a three year shelf life limit is suggested. Maximum recommendedstorage temperature is 110¼ F (43¼ C). 8560 Products arenot affected by freezing. Standard stock rotation practiceis recommended.
8.0 Availability
Breakout boot products are package and supplied in thefollowing kit configuration:
One each poly-bagged assembly with installation
instructions; one poly bag per carton.8560 Series Breakout Boot Products can be purchasedthrough your local authorized 3M electrical distributor.
Breakout Boot Installation
A. Slide cable breakout boot assembly onto cable from the
neck end. Guide individual cable phase legs through the
assembly finger cores.
B. Remove boot assembly Neck Core [B] by pulling, while
unwinding, the loose pull tab [E] in a counter clock-wise
direction around cable.
C. Remove each finger core [A] using the same technique(Reference Step B.)
The cable breakout area is now protected from environmental
contamination and moisture.
[A] Finger Core
(Typical)
Finger
Neck
[B] Neck Core
[E] Pull Tab
3M and Cold Shrink are trademarks of 3M.
IMPORTANT NOTICE
All statements, technical information and recommendations related to the Seller’s products are based on information believed to be reliable,but the accuracy or completeness thereof is not guaranteed. Before utilizing the product, the user should determine the suitability of theproduct for its intended use. The user assumes all risks and liability whatsoever in connection with such use.
Any statements or recommendations of the Seller which are not contained in the Seller’s current publications shall have no force or effectunless contained in an agreement signed by an authorized office of the Seller. The statements contained herein are made in lieu of allwarranties, expressed or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purposewhich warranties are hereby expressly disclaimed.
SELLER SHALL NOT BE LIABLE TO THE USER OR ANY OTHER PERSON UNDER ANY LEGAL THEORY, INCLUDING BUT NOTLIMITED TO NEGLIGENCE OR STRICT LIABILITY, FOR ANY INJURY OR FOR ANY DIRECT, INDIRECT, INCIDENTAL ORCONSEQUENTIAL DAMAGES SUSTAINED OR INCURRED BY REASON OF THE USE OF ANY OF THE SELLER’S PRODUCTS.
Electrical Products Division6801 River Place Blvd.Austin, TX 78726-9000 Printed on 50% recycled paper Litho in USAwww.3M.com/elpd with 10% post-consumer ©3M 1998 78-8124-4242-0