| Customization: | Available |
|---|---|
| Application: | Construction, Industrial, Power Station |
| Voltage: | Low and Medium Voltage Cable |
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The three cores cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 1.8/3KV to 26/35KV and frequency 50Hz.
They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.
| Conductor | Plain annealed copper or aluminium complying with IEC 60228 class 1 or 2. |
| Conductor Screen | The conductor screen consists of an extruded layer of non metallic, semi-conducting compound firmly bonded to the insulation to exclude all air voids. The conductor screen is not necessary for both PVC and EPR/HEPR insulated 1.8/3KV and 3.6/6KV cables. |
| Insulation | Insulation is of polyvinyl chloride (PVC) intended for 1.8/3KV and 3.6/6KV cables, cross-linked polyethylene compound (XLPE) or ethylene propylene rubber (EPR/HEPR). |
| Nom. Cross Section Area | Insulation Thickness at Nominal Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1.8/3KV (Um=3.6KV) | 3.6/6KV (Um=7.2KV) | 6/10KV (Um=12KV) | 8.7/15KV (Um=17.5KV) | 12/20KV (Um=24KV) | 18/30KV (Um=36KV) | 21/35KV (Um=42KV) | 26/35KV (Um=42KV) | |||
| mm^2 | mm | mm | mm | mm | mm | mm | mm | mm | ||
| XLPE/EPR | XLPE | EPR | XLPE/EPR | XLPE/EPR | XLPE/EPR | XLPE/EPR | XLPE/EPR | XLPE/EPR | ||
| Unscreened | Screened | |||||||||
| 10 | 2.0 | 2.5 | 3.0 | 2.5 | - | - | - | - | - | - |
| 16 | 2.0 | 2.5 | 3.0 | 2.5 | 3.4 | - | - | - | - | - |
| 25 | 2.0 | 2.5 | 3.0 | 2.5 | 3.4 | 4.5 | - | - | - | - |
| 35 | 2.0 | 2.5 | 3.0 | 2.5 | 3.4 | 4.5 | 5.5 | - | - | - |
| 50 - 185 | 2.0 | 2.5 | 3.0 | 2.5 | 3.4 | 4.5 | 5.5 | 8.0 | 9.3 | 10.5 |
| 240 | 2.0 | 2.6 | 3.0 | 2.6 | 3.4 | 4.5 | 5.5 | 8.0 | 9.3 | 10.5 |
| 300 | 2.0 | 2.8 | 3.0 | 2.8 | 3.4 | 4.5 | 5.5 | 8.0 | 9.3 | 10.5 |
| 400 | 2.0 | 3.0 | 3.0 | 3.0 | 3.4 | 4.5 | 5.5 | 8.0 | 9.3 | 10.5 |
| 500 - 1600 | 2.2-2.8 | 3.2 | 3.2 | 3.2 | 3.4 | 4.5 | 5.5 | 8.0 | 9.3 | 10.5 |
*Insulation Thickness of PVC is 3.4mm (1- 1600mm sq) for 3.6/6KV cables.
| Insulaton Screen | The insulation screen consists of an extruded layer of non metallic, semiconducting compound extruded over the insulation. The extruded semi-conducting layer shall consist of bonded or cold strippable semi-conducting compound capable of removal for jointing or terminating. As an option, a semi-conducting tape may be applied over the extruded semi-conducting layer as a bedding for the metallic layer. The minimum thickness is 0.3 mm and the maximum resistivity is 500 Ohm-m at 90°C. The screen is tightly fitted to the insulation to exclude all air voids and can be easily hand stripped on site. The insulation screen is not necessary for both PVC and EPR/HEPR insulated 1.8/3KV and 3.6/6KV cables. The screen may be covered by semi-conductive water blocking swellable tape to ensure longitudinal watertightness. |
| Metallic Layer | The metallic layer may be applied over the individual cores or the core assembly collectively. |
The following types of metallic layers are provided:
1) Metallic Screen
2) Concentric Conductor
3) Metallic Sheath
4) Metallic armour
The metallic screen shall consist of either copper tapes or a concentric layer of copper wires or a combination of tapes and wires to provide an earth fault current path. The concentric conductor is applied directly either over the insulation, or over the insulation screen or over an inner covering. The metallic sheath consists of lead or lead alloy applied as a tightly fitting seamless tube. The metallic armour consists of either flat wire armour, round wire armour, and double tape armour.
| Nom. Cross-Section Area of Cable | Min. Cross-Section of Metallic Screen | DC Resistance of the Copper Wire Screen |
|---|---|---|
| mm^2 | mm^2 | mm |
| up to 120 | 16 | 1.06 |
| 150-300 | 25 | 0.72 |
| 400-630 | 35 | 0.51 |
| 800-1000 | 50 | 0.35 |
| Separation Sheath (for armoured cable) | The separation sheath comprises a layer of extruded PVC, PE or LSZH, applied under the armour. The nominal thickness is calculated by 0.02Du + 0.6mm where Du is the fictitious diameter under the sheath in mm. For cables without a lead sheath, the nominal separation sheath thickness shall not be less than 1.2mm. For cables where the separation sheath is applied over the lead sheath, the nominal separation sheath thickness shall not be less than 1.0mm. |
| Lapped Bedding (for armoured lead sheathed cable) | The lapped bedding consists of either impregnated/synthetic compounded paper tapes or a combination of two layers of these paper tapes followed by a few layers of compounded fabulous materials. The thickness is around 1.5mm. |
| Armour (for armoured cable) | The armour consists of round aluminium wire armour applied helically over an extruded separation sheath. |
| Fictitious Diameter under the Armour | Armour Wire Diameter | |
|---|---|---|
| mm | mm | |
| > | < | |
| - | 10 | 0.8 |
| 10 | 15 | 1.25 |
| 15 | 25 | 1.6 |
| 25 | 35 | 2.0 |
| 35 | 60 | 2.5 |
| 60 | - | 3.15 |
| Over Sheath | Overall sheath comprises a layer of extruded thermoplastic compound (PVC, PE or LSZH can be offered as an option.) or elastomeric compound (polychlorprene CSP or chlorosulfonated PE). The nominal over sheath thickness is calculated by 0.035D+1 where D is the fictitiuous diameter immediately under the over sheath in mm. For unarmoured cables and cables with the over sheath not applied over the armour, metallic screen or concentric conductor, the nominal over sheath thickness shall not be less than 1.4mm. And for cables with over sheath applied over the armour, metallic screen or concentric conductor, the nominal over sheath thickness shall not be less than 1.8mm. |
| Operating Temperature | up to 70°C (PVC insulation); up to 90°C (XLPE or EPR insulation) |
| Temperature Range | -5°C ( PVC or LSZH sheath ); -20°C ( PE sheath ) |
| Short Circuit Temperature( 5 seconds maximum duration ) | 140-160°C (PVC insulation) ; 250°C (XLPE or EPR insulation) |
| Bending Radius | 12 x OD |
| Rated Voltage Uo/U | Operating Voltage (Um) | Testing Voltage (rms) |
|---|---|---|
| 1.8/3KV | 3.6KV | 6.5KV |
| 3.6/6KV | 7.2KV | 12.5KV |
| 6/10KV | 12KV | 21KV |
| 8.7/15KV | 17.5KV | 30.5KV |
| 12/20KV | 24KV | 42KV |
| 18/30KV | 36KV | 63KV |
| 21/35KV | 42KV | 73.5(53)*KV |
| 26/35KV | 42KV | 91(65)*KV |
*21/35KV and 26/35KV power frequency voltage test can be made under the following conditions: 2.5Uo x 30mins or 3.0Uo x 15mins.
Numbers in brackets refer to the test values for 3.0Uo x 1.5mins.
Established in 2001, Yifang Electric Group Inc. is a leading, hi-tech, large joint-stock enterprise specializing in the design, production, and sales of (wires & cables) in China. Based in Zhengzhou, the factory enjoys a strategic location with more than 500 employees, including 50+ technical staff and 5 senior engineers. Our facility boasts over 150 sets of advanced cable production equipment and complete testing facilities, including a state-of-the-art national-level fire-resistant and flame-retardant cable laboratory.
We manufacture a wide range of high-quality products, including power cables up to 220KV, overhead insulated cables, ABC cables, building cables, flexible cords, control cables, rubber cables, bare conductors (ACSR, AAC, AAAC), welding cables, galvanized steel wire (stay wire), flame retardant mining cables, and more. As an export-import company, we have exported our products to Europe, Australia, the Middle East, Southeast Asia, Africa, the Americas, and beyond. Our commitments to customer satisfaction and quality have earned us extensive praise from customers worldwide.
While maintaining ISO9001, ISO14001, and OHSAS18001 certifications, as well as CCC, CE, and IEC international certificates, we have passed audits by SGS and BV. We believe in fostering a people-oriented environment, promoting comprehensive quality management systems, and collaborating with individuals from various social sectors in a journey of shared prosperity.
1.Q:Are you a factory or trading company?
A: Manufacturing base in Henan ,China, with more than 500 workers.
2.Q:How can I visit there?
A: Sure,If you need,we will arrange the driver to pick you up.
3.Q:How can I get some samples?
A: Contact me on below,Determin sample and address for shipping.
4.Q:Have you ever supplied cables to our country?
A: Yifang Cables have been sold to over 100 countries and regions in the world. can you contact me for details.
5.Q:What is your MOQ?
A: MOQ Normally 500 meters for big diameter cables.Please contact me for detail info if you have specific cable requirement.
6. Q:When can I get the price?
A: Usually quote within 6 hours after we get your inquiry.
7.Q:How long is your delivery time?
A: According to your order's quantity.Usually our lead time is 3 - 20 working days.
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