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SuperOhm® 3749

Orange polymeric composition in pellet form, based on EPR rubber containing peroxide curing agent, ready for extrusion in a conventional CV or dry cure extrusion line.

Brand: SuperOhm (23 products)

Polymer Name: Ethylene Propylene Copolymer

Processing Methods: Extrusion

Density: 1090.0 - 1130.0 kg/m³

Enhanced TDS

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Technologies

Features & Benefits

Labeling Claims

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Cables insulated with SUPEROHM® 3749 are suitable for industrial, power, mining, distribution, and other medium voltage applications for wire and cable products rated up to 46 kV.

Properties

Color
Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation475%-
Specific Gravity1.11 - 1.15--
Tensile Strength1650psi-
Thermal Properties
ValueUnitsTest Method / Conditions
Retained Elongation (7 Days in 121°C Air Oven)95%-
Retained Elongation (7 Days in 136°C Air Oven)95%-
Retained Elongation (7 Days in 150°C Air Oven)95%-
Retained Tensile (7 Days in 121°C Air Oven)110%-
Retained Tensile (7 Days in 136°C Air Oven)100%-
Retained Tensile (7 Days in 150°C Air Oven)95%-
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivity1.0 X 10^16Ohm-cm-
Dielectric Strength900V/mil-

Regulatory & Compliance

Chemical Inventories
Specifications

When extruded and cured consistent with standard safe wire and cable industry practices, cable insulated with SUPEROHM® 3752 EPR insulation will comply with the requirements as specified in the following standards:
UL 44 (14 AWG)
ICEA S-68-516
NEMA Pub. No. WC-70, WC-71, WC-74
ANSI / ICEA S-94-649-2000 Class I, II, III
IEC Publication 60502
IEC Publication 60840
UL 1072 for type MV-90, MV-105 (35kV)

Certification
  • Certified Test Results including physical test data are included with each shipment.

Technical Details & Test Data

Processing

SUPEROHM® 3749 compound is engineered to be processed on conventional extrusion equipment. It is recommended that this product is processed using a shallow screw, cross channel obstruction such as mixing rings should be avoided. Metering screw with 2.5-3:1 compression ratio in 20/1 extruders should produce satisfactory results. The compound supplied is in the cleanest state and is of the highest quality; however, the use of a breaker plate with a screen pack of approximately 20/40 or 20/60 mesh is recommended for optimal rheological flow and steady back pressure.


Pre-drying of the compound is not necessary, provided that the compound has been stored unopened in a cool, dry area.
The following conditions are given as a guide for processing (single extrusion):

Temperature Profile:

°F

°C

Screw:

170-180

77-82

Zone 1 (feed):

210-220

99-105

Zone 2:

210-220

99-105

Zone 3:

210-220

99-105

Zone 4:

210-220

99-105

Crosshead

220-230

105-110

 

 

Packaging & Availability

Packaging Type

Storage & Handling

Storage
  • SUPEROHM® 3752 containers should be stored at temperatures below 50C (120F) in a dry area to avoid massing of pellets. Product is recommended to be used within 12 months.
Handling
  • To ensure health and safety, Material Safety Data Sheets (MSDS) are available and should be consulted prior to use.