This document provides product information on 3M Scotchcast Electrical Resin 241 and 243. It summarizes that they are two-part, heat-curing epoxy resins that are brown (Resin 241) or unpigmented (Resin 243). The resins are semiflexible, have good adhesion and impact resistance, and are rated for continuous use up to 130°C. They are commonly used for applications like motor encapsulation and transformer potting. The document provides detailed information on the resins' properties, testing methods, usage, handling, storage, and safety.
3M Scotchcast No. 4 Epoxy Resin is an electrical insulating, two-part epoxy encapsulating resin. 3M Scotchcast No. 4 epoxy resin is mixed in its unique container bag generating its own heat to cure. The nature of the viscosity, which first decreases to allow it to flow into crevices and awkward spots and then increase rapidly to cure, makes it ideal for small cable joints.
Typical applications for 3M Scotchcast No 4 Epoxy Resin : jointing solid dielectric and oil filled cables up to 8 kV and encapsulating high voltage cable joints up to 69kV.
3M Scotchcast 2130 Electrical Insulating Resin is a special flame retardant, two-part, polyurethane resin that is designed to replace the cable jacket or sheath when cable jointing or repairing flexible cables - including flexible and trailing mining and shipwiring cables.
3M Scotchcast 2130 resin is suitable for submerged (seawater) and offshore applications.
3M Scotchcast Inline Cable Joints 91-NBA with 470W Resin
3M Scotchcast resin cable joint kits 91-NBA are designed to be used for cable jointing low voltage LV unarmoured single core and multi-core (2, 3, 4 and 5 core) cables. 3M Scotchcast resin cable joints incorporate electrical insulation and mechanical protection of unarmoured cable joints with compression or mechanical connectors. 3M Scotchcast unarmoured cable joints can be used for indoor and outdoor, underground and submerged applications.
Unarmoured Cable Joints - 3M Scotchcast Inline Cable Joints 91-NBA with 470W Resin - Features
• 3M Scotchcast resin 470W in transparent two chamber bags with integrated 3M Closed Mixing and Pouring (CMP) cable jointing system
• One part translucent cable joint mould body with snap fit closing system for quick and easy handling by the LV cable jointers
• Pre cut foam sealing elements to provide reliable sealing to the cable joint mould body without tooling for all cable application diameters
• Closure cap to prevent any pollution
3M Scotchcast 2123 Reenterable Electrical Insulating Resin is a soft, two-part polybutadiene resin encapsulant designed especially for reeterable cable splice or cable joint protection and for filling cable boxes. 3M Scotchcast 2123 bonds to most cable jackets and provides an excellent multi-purpose moisture sealing resin.
3M Scotchcast Reenterable 2123 Resin Applications
* replace or repair cable jacket on single and multicore power cables
* sealing cable crotch or cable sheath when terminating power cables
3M Scotchcast No. 4 Epoxy Resin is an electrical insulating, two-part epoxy encapsulating resin. 3M Scotchcast No. 4 epoxy resin is mixed in its unique container bag generating its own heat to cure. The nature of the viscosity, which first decreases to allow it to flow into crevices and awkward spots and then increase rapidly to cure, makes it ideal for small cable joints.
Typical applications for 3M Scotchcast No 4 Epoxy Resin : jointing solid dielectric and oil filled cables up to 8 kV and encapsulating high voltage cable joints up to 69kV.
3M Scotchcast 2130 Electrical Insulating Resin is a special flame retardant, two-part, polyurethane resin that is designed to replace the cable jacket or sheath when cable jointing or repairing flexible cables - including flexible and trailing mining and shipwiring cables.
3M Scotchcast 2130 resin is suitable for submerged (seawater) and offshore applications.
3M Scotchcast Inline Cable Joints 91-NBA with 470W Resin
3M Scotchcast resin cable joint kits 91-NBA are designed to be used for cable jointing low voltage LV unarmoured single core and multi-core (2, 3, 4 and 5 core) cables. 3M Scotchcast resin cable joints incorporate electrical insulation and mechanical protection of unarmoured cable joints with compression or mechanical connectors. 3M Scotchcast unarmoured cable joints can be used for indoor and outdoor, underground and submerged applications.
Unarmoured Cable Joints - 3M Scotchcast Inline Cable Joints 91-NBA with 470W Resin - Features
• 3M Scotchcast resin 470W in transparent two chamber bags with integrated 3M Closed Mixing and Pouring (CMP) cable jointing system
• One part translucent cable joint mould body with snap fit closing system for quick and easy handling by the LV cable jointers
• Pre cut foam sealing elements to provide reliable sealing to the cable joint mould body without tooling for all cable application diameters
• Closure cap to prevent any pollution
3M Scotchcast 2123 Reenterable Electrical Insulating Resin is a soft, two-part polybutadiene resin encapsulant designed especially for reeterable cable splice or cable joint protection and for filling cable boxes. 3M Scotchcast 2123 bonds to most cable jackets and provides an excellent multi-purpose moisture sealing resin.
3M Scotchcast Reenterable 2123 Resin Applications
* replace or repair cable jacket on single and multicore power cables
* sealing cable crotch or cable sheath when terminating power cables
3M Scotchcast No. 40G Resin is an electrical insulating, two-part polyurethane encapsulating resin. 3M Scotchcast No. 40G insulating resin is mixed in its unique container bag generating its own heat to cure. The nature of the viscosity, which first decreases to allow it to flow into crevices and awkward spots and then increase rapidly to cure, makes it ideal for small cable joints - 40G Scotchcast electrical insulating resin provides mechanical protection and electrical insulation of low voltage electrical cable joints installed in indoor, outdoor, underground and submerged applications.
Isolation Procedures for Safe Working on Electrical Systems and Equipment by the JIB | solation Procedures for Safe Working on Electrical Systems and Equipment
This chart shows the safe isolation procedure that you should use when working on electrical systems and equipment.
You'll receive a printed copy of this from your Training Provider, but it's also here as a handy reference to keep electronically.
THE RULES OF SAFE ISOLATION ARE:
Obtain permission to start work (a Permit may be required in some situations)
Identify the source(s) of supply using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Isolate the supply(s)
Secure the isolation
Prove the system/equipment is DEAD using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Put up warning signs to tell other people that the electrical installation has been isolated
Once the system/equipment is proved DEAD, work can begin
Uploaded by THORNE & DERRICK LV HV Jointing, Earthing, Substation & Electrical Eqpt | Explosive Atmosphere Experts & ATEX IECEx.
THORNE & DERRICK based in the UK are international distributors of LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
Contact us for 3M, ABB, Alroc, AN Wallis, CATU, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
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3M Scotchcast Resin, Epoxy Resin 241
1. Page 1 of 4
Product Description
3M™
Scotchcast™
Electrical Resin 241 is a medium
viscosity, semiflexible, two-part, heat-curing, brown
pigmented, 100% solids epoxy resin system. Resin 243
is identical to 241, except it is unpigmented so it can be
colored at any shade desired. This general purpose resin
system has built-in flexibility, good adhesion, terminal
shock and impact resistance, and stable electrical and
physical properties at 130°C (Class B) continuous
operation. This filled resin system is used where higher
thermal conductivity and greater mechanical strength
are required (as compared to the unfilled Scotchcast
235 resin). It is frequently used for motor encapsulation,
transformer potting, and insulating other electrical and
electronic components.
• Brown pigmented (Resin 241)
• Unpigmented (Resin 243)
• Class B rated
• Flexible
Test Methods
1
3M Test Methods
2
MIL-I-16923E
3
Fed. Std. No. 406, Method 1022
4
Fed. Std. No. 406, Method 1011
5
Fed. Std. No. 406, Method 1031
6
Fed. Std. No. 406, Method 4031
7
Fed. Std. No. 406, Method 4021
8
Fed. Std. No. 406, Method 4041
Scotchcast™
Electrical Resins 241, 243
Two-Part, Oven-Curing, Class B, Semiflexible, Filled Epoxy Liquid Resin
Data Sheet
Typical Properties
*Not recommended for specification purposes. Product specifications will be
provided upon request.
Property Value*Property Value*
Color 241 Brown
243 Cream
Specific Gravity (Mixed) 1.42
Flammability2
Self-extinguishing
Compressive Strength3
2000 psi
(10% Compression) (141 kg/cm2
)
Tensile Strength4
1300 psi
(1/8" x 1/2" Sample) (91 kg/cm2
)
Elongation4
(% @ break) 45
Flexural Strength5
6000 psi
(422 kg/cm2
)
Electric Strength6
375 V/mil
(1/8" [3.175 mm] Sample) (14.8 kv/mm)
Hardness (Shore D) 65
Thermal Conductivity2
8.0 x 10-4
(cal · cm/cm2 · sec · °C)
Coefficient of Linear Thermal Expansion2
13.6 x 10-5
(23° C to 113°C)
(length/unit length/°C)
Thermal Shock1
10 cycles - 55C to 130°C
1/4" (6.35 mm) Olyphant Inserts Passes
Thermal Shock2
Passes
Mechanical Shock2
> 7.8
(Ball drop, lbs.) (3.5 kg)
Moisture Absorption2
%Weight gain, 240 hrs. @96 % R.H. .60
Water Immersion (sample cured 3 hrs. @120°C)
1000 hrs. @ 23°C % weight gain 0.85
Thermal Aging
1000 hrs. @130°C
% Weight Loss 2.3
Hardness Change, Shore D 0
Dielectric Constant7
(100 Hz @ 23°C) 5.6
Dissipation Factor7
(100 Hz @ 23 °C) .08
Volume Resistivity8
(Ohm-cm @ 23°C) 1.6 x 1015
1000 hrs. @155°C
% Weight Loss 9.6
Hardness (Shore D) Change +16
Dielectric Constant7
(100 Hz @ 23°C) 4.9
Dissipation Factor7
(100 Hz @ 23 °C) 0.04
Volume Resistivity8
(Ohm-cm @ 23°C) 2.9 x 1015
Handling Properties
Mix Ratio (A:B) Wt 1:2
Vol (%) 31:69
Viscosity A = 175,000 cps
@ 23°C (73°F) B = 9,000 cps
Mixed = 15,000 cps
Density A = 1.53 kg/l (12.71 lbs/gal)
B = 1.36 kg/l (11.3 lbs/gal)
Flash Point A = 202°C (395°F)
B = 171°C (340°F)
Gel Time 22 min. @ 121°C (250°F)
Curing Guide 75°C (167°F) 15-20 hrs.
95°C (203°F) 6-8 hrs.
121°C (250°F) 2-3 hrs.
Note: These are typical values and should not be used for specification
purposes.purposes.
CABLE JOINTS, CABLE TERMINATIONS, CABLE GLANDS, CABLE CLEATS
FEEDER PILLARS, FUSE LINKS, ARC FLASH, CABLE ROLLERS, CUT- OUTS
11KV 33KV CABLE JOINTS & CABLE TERMINATIONS
FURSE EARTHING
www.cablejoints.co.uk
Thorne and Derrick UK
Tel 0044 191 490 1547 Fax 0044 191 477 5371
Tel 0044 117 977 4647 Fax 0044 117 9775582
2. 78-8124-5678-4-BPage 2 of 4
Usage Information
Mixing
Mix the separate parts before removing them from their
containers. They may be warmed to 60ºC (140ºF) to aid
mixing. Weigh the correct proportions of the separate parts
to within 2% accuracy and combine them. Thoroughly
blend the mixture until the color is absolutely uniform or a
homogeneous mixture is attained.
Deaerating
Entrained air can be removed by evacuating for 5 to 15
minutes at 5 to 10 mm of mercury (Hg) absolute pressure.
Warming the mixed resin to 60°C (140°F) facilitates air
removal. Container side walls should be four times the height of
3M™
Scotchcast™
Scotchcast™ ™
Scotchcast™
Scotchcast Electrical Resin to contain the foaming that™
Electrical Resin to contain the foaming that™
takes place under vacuum.
Coloring
Inorganic color concentrates are recommended to color
unpigmented resin 243. These concentrates are dispersed
in epoxy resin and should be added to part A of the
Scotchcast resins or to the mixed resin. Up to 3% by
weight of the concentrate can be added to the total of
the resin being blended. Following the manufacturer's
directions, the user should first experiment with small
batches of resin until the desired color is achieved before
coloring the entire quantity.
Casting and Impregnating
Pour the warm resin into the preheated 100°C (212°F)
mold. If no mold is used, dip the preheated part into the
resin. Heating the resin and mold aids impregnation. For
maximum impregnation, evacuate for 5 to 15 minutes at
5mm of mercury (Hg) absolute pressure, or pour under
vacuum and hold for several minutes before releasing. If
impregnation is thought to be more important than thermal
conductivity and mechanical strengths, the user should
consider Scotchcast resins 235 and 237.
Curing
Where minimum stress and maximum thermal shock
resistance are required, the lower temperature cure cycle
is recommended. (See “Curing Guide” of Handling
Properties section). Time should be added to the cure
cycle to allow resin to reach curing temperatures.
Storage
Both parts of this resin system should be stored at
temperatures between 20 to 30 degrees Celsius, and 30% to
60% relative humidity. When not in use, containers should
be kept tightly closed. Storage at conditions outside those
suggested may compromise the performance of the resin.
Handling and Safety Precautions
Read all Health Hazard, Precautionary and First Aid
statements found in the Material Safety Data Sheet
(MSDS) and/or product label of chemicals prior to
handling or use.
Usage Information Handling and Safety Precautions