ERF 8.7/15KV 1x50 Cable
Model: ERF 8.7/15KV 1*50
Voltage Grades: 8.7/15KV
Conductor
The conductor uses tin-plated annealed soft copper, which should comply with the specifications of the 5th type of soft copper conductor in GB/T 3956-2008. The conductor is wrapped externally with a semi-conductive tape.
2.2 Insulation
Insulation is made of EPDM rubber, with a nominal thickness as specified in Table 1 of the standard. The minimum thickness at the thinnest point should be no less than 90%-0.1mm of the nominal value. The insulation properties meet the requirements of EPR insulation compound as specified in GB/T 12706.2-2008. The insulation adhesive is red.
Simultaneously extrude both a semi-conductive conductor shield and a removable insulating shield during insulation extrusion.
2.3 Shielding Layer
The shielding layer for power cores 50mm2 and below is composed of a mixture of tinned copper wire and fiber braided together; for power cores 70mm2 and above, the shielding layer is made up of tinned copper wire braided together.
Outer sheath
The outer sheath is made of weather-resistant rubber, with the sheath nominal thickness conforming to the specifications in Table 1. The minimum thickness should not be less than 85%-0.1mm of the nominal value. The sheath performance meets the requirements of the SE1 sheath material in GB/T 12706.2-2008. The sheath color is black.
Primarily used for:
1. Temporary lines for reuse in distribution networks, emergency repair lines alongside roads, and temporary working lines for the electric power bureau.
2. Transformer boxes, internal connections of switchgear, internal or inter-box connections of ring main units, mobile substations, and high-voltage downleads, etc.
3. Suitable for various low-voltage switch cabinets and motor connecting wires.
4. Test Cables for Attachment Factory (reusable). Suitable for areas requiring flexible cables.
5. Connections for inverters, variable frequency motors, and similar equipment; insulation soft cables made of ethylene propylene rubber for variable frequency devices
1. Suitable for various low-voltage switchgear and motor connecting wires.
2. Conductors are made of tinned copper wires in a braided configuration, with a continuous operating temperature for the cable conductors at 90°C.
3. This product utilizes ethylene propylene rubber insulation and a mixed rubber sheath, in compliance with environmental protection standards.
4. The outer sheath boasts excellent flame-retardant properties, as well as oil and ozone resistance.
5. Production Range: 6mm2~630mm2
6. Voltage Grades: 0.6/1KV, 8.7/15KV, 26/35KV, 64/110KV
Section 3: Product Structure and Performance Features
The conductors are made of Category 5 soft conductors, which are typically tin-plated.
Insulation for cables 6kV and above utilizes a three-layer co-extrusion process, offering the same dielectric strength and partial discharge performance as cross-linked cables.
6kV and above cables are shielded with copper wire braiding to accommodate bending and movement requirements, offering flexibility; for short distances (less than 5 meters), metal shielding may not be necessary, but must be confirmed by a technician; the sheath is made of chloroprene, providing flame retardancy and oil resistance, among other properties.
Section 4: Selection of Accessories for Medium and High Voltage Flexible Cables
Simply use cold-shrink or hot-shrink accessories for cross-linked cables, but note that:
Due to the larger cross-sectional area of the soft conductor compared to the compact conductor of the same size, and the insulation layer typically being 0.5mm thicker than the cross-linked insulation, the overall diameter after insulation will be more than 1.5mm larger. There are no issues when crimping the wire terminals, and occasionally, the accessory sizes may need to be one size larger than the cross-linked cables.
64/110KV Product Structure and Performance Features
6kV and above cables utilize a three-layer co-extrusion process for insulation, offering the same dielectric strength and partial discharge performance as cross-linked cables.
6kV and above cables use copper wire braid for shielding to accommodate bending and movement needs, ensuring flexibility. For short distances (less than 5 meters), metallic shielding may not be required, but must be confirmed by a technician. Cold shrink or hot shrink accessories for cross-linked cables can be used, but note: due to the softer conductor being thicker than the same cross-sectional tightly compressed conductor, and the insulation layer generally being 0.5mm thicker than the cross-linked insulation, the overall outer diameter will be more than 1.5mm larger after insulation. There are no issues when crimping the termination sleeves, but the accessory size may sometimes need to be a size larger than the cross-linked cable. For cables with special requirements, such as suitable for long-distance suspended laying, low-temperature resistance, flame retardancy, water resistance, and tin-plated conductors, our company can provide customized services!
