✅ Professional Power Cable Manufacturer in China
We are a professional manufacturer of power cables for EPC projects, power plants, substations, oil & gas, and industrial power distribution applications. Our power cables are designed for transmission and distribution of electrical power in urban underground grids, power stations, industrial facilities, and infrastructure projects. All products comply with GB/T 12706, IEC 60502, and project-specific standards, with XLPE or PVC insulation options available for rated voltages from 0.6/1kV up to 35kV.
| Parameter | Specification |
|---|---|
| Standard | GB/T 12706 / IEC 60502 |
| Rated Voltage | 0.6/1kV, 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV, 21/35kV, 26/35kV[reference:0] |
| Conductor Material | Copper / Aluminum (Tinned Copper optional) |
| Conductor Size | 1.5mm² ~ 630mm²[reference:1] |
| Core Count | Single-core, 2-core, 3-core, 4-core, 5-core[reference:2] |
| Insulation Material | XLPE (Cross-linked Polyethylene) / PVC |
| Sheath Material | PVC / PE / LSZH |
| Armor | Steel Tape Armored (STA) / Steel Wire Armored (SWA) / Unarmored[reference:3] |
| Flame Retardant | ZR (Flame Retardant) / ZRA (Halogen-Free Flame Retardant) / NH (Fire Resistant)[reference:4] |
| Max. Conductor Operating Temp. | 90°C (XLPE) / 70°C (PVC)[reference:5] |
| Max. Short-circuit Temp. | 250°C (XLPE, max. 5s)[reference:6] |
| Min. Bending Radius | Single-core: 15×OD; Multi-core: 12×OD[reference:7] |
| Min. Installation Temperature | 0°C (preheating required below 0°C)[reference:8] |
| Voltage Test | 3.5kV AC / 5min (no breakdown)[reference:9] |
| Application | Power plants, substations, EPC projects, urban underground grids, industrial facilities, oil & gas, mining, metallurgy[reference:10] |
* Custom specifications are available upon request for EPC project tenders.
| Model | Name | Application |
|---|---|---|
| VV | PVC Insulated PVC Sheathed Power Cable | General indoor, conduit, trench[reference:11] |
| VLV | Aluminum Core PVC Insulated PVC Sheathed | Cost-effective indoor applications[reference:12] |
| VV22 | PVC Insulated Steel Tape Armored PVC Sheathed | Underground, mechanical protection[reference:13] |
| VLV22 | Aluminum Core PVC Insulated Steel Tape Armored | Underground, cost-effective[reference:14] |
| YJV | XLPE Insulated PVC Sheathed Power Cable | Higher temp rating, better electrical性能[reference:15] |
| YJLV | Aluminum Core XLPE Insulated PVC Sheathed | Higher temp rating, aluminum conductor[reference:16] |
| YJV22 | XLPE Insulated Steel Tape Armored PVC Sheathed | Underground, high mechanical strength[reference:17] |
| YJLV22 | Aluminum Core XLPE Insulated Steel Tape Armored | Underground, aluminum conductor[reference:18] |
| ZA-VV / ZB-YJV | Flame Retardant Power Cable | Fire safety priority areas[reference:19] |
| NH-YJV | Fire Resistant Power Cable | Critical fire safety systems[reference:20] |
Q1: What is a power cable used for?
A: A power cable is an assembly of two or more electrical conductors held together with an overall sheath, designed for transmission and distribution of electrical power[reference:21]. It is used in urban underground power grids, power stations, industrial facilities, substations, and infrastructure projects to deliver electricity from generation sources to end users[reference:22].
Q2: What is the difference between power cable and control cable?
A: Power cables are designed for high voltages and high current loads to transmit electrical power, while control cables transmit low-voltage signals for monitoring and control purposes[reference:23]. Power cables have larger conductor sizes and thicker insulation, whereas control cables have smaller conductors and are used in instrumentation and automation systems.
Q3: What standards do your power cables comply with?
A: Our power cables are manufactured in compliance with GB/T 12706 (Chinese national standard) and IEC 60502 (international standard for extruded insulation power cables)[reference:24][reference:25]. We also support BS, DIN, ICEA, and project-specific custom standards upon request[reference:26].
Q4: What is the difference between VV and YJV power cables?
A: VV uses PVC insulation with a maximum operating temperature of 70°C. YJV uses XLPE (cross-linked polyethylene) insulation with a maximum operating temperature of 90°C[reference:27]. XLPE cables offer better electrical performance, higher current-carrying capacity, and better resistance to chemical corrosion and heat[reference:28].
Q5: What is the difference between unarmored and armored power cables?
A: Unarmored cables (VV, YJV) are suitable for indoor installations, cable trays, and conduits. Armored cables (VV22, YJV22) have a steel tape armor layer that provides mechanical protection against crushing, impact, and rodents, making them ideal for underground direct burial and harsh environments[reference:29].
Q6: What is the difference between copper and aluminum conductor power cables?
A: Copper conductors offer lower electrical resistance, higher conductivity, and better corrosion resistance but are more expensive. Aluminum conductors are lighter and more cost-effective but require a larger cross-sectional area to carry the same current. Copper is preferred for critical applications; aluminum is used for cost-sensitive projects[reference:30].
Q7: What is the maximum operating temperature for power cables?
A: For XLPE insulated cables (YJV series), the maximum continuous operating temperature is 90°C. For PVC insulated cables (VV series), it is 70°C. In short-circuit conditions (max. 5 seconds), XLPE cables can withstand up to 250°C[reference:31].
Q8: What is the minimum bending radius for power cables?
A: For single-core cables, the minimum bending radius is 15 times the cable outer diameter (15×OD). For multi-core cables, it is 12 times the cable outer diameter (12×OD)[reference:32]. Armored cables generally have a smaller bending radius than unarmored cables.
Q9: What is the minimum installation temperature for power cables?
A: The minimum installation temperature is 0°C. If the ambient temperature is below 0°C, the cable must be preheated before installation to prevent insulation damage[reference:33].
Q10: What is the difference between flame retardant (ZR) and fire resistant (NH) power cables?
A: ZR (Flame Retardant) cables are designed to prevent flame propagation and self-extinguish in case of fire[reference:34]. NH (Fire Resistant) cables are designed to maintain circuit integrity during a fire for a specified period, ensuring critical systems (fire alarms, emergency lighting) continue to operate[reference:35]. ZRA adds low-smoke, halogen-free properties for enclosed spaces[reference:36].
Q11: What voltage ratings are available for power cables?
A: We supply power cables for a wide range of voltage ratings including: 0.6/1kV, 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV, 21/35kV, and 26/35kV[reference:37]. The most commonly used for industrial and EPC projects is 0.6/1kV for low-voltage distribution[reference:38].
Q12: How do I select the right power cable for my project?
A: Key selection factors include: (1) Rated voltage — match your system voltage; (2) Conductor size — based on current load and voltage drop; (3) Insulation type — XLPE for higher temp, PVC for general use; (4) Armor requirement — armored for underground/burial, unarmored for indoor; (5) Flame retardant requirement — ZR/ZRA/NH based on fire safety codes. Our engineering team can provide full technical selection support.
Q13: What tests are performed on power cables before delivery?
A: We conduct comprehensive quality tests including: (1) Voltage test — 3.5kV AC for 5 minutes with no breakdown[reference:39]; (2) Partial discharge test — ≤10pC at 1.73Uo[reference:40]; (3) DC resistance test — per GB/T 3956[reference:41]; (4) Insulation thickness and physical property tests; and (5) Routine and acceptance tests as per project requirements[reference:42].
Q14: Do you support EPC projects with technical documentation?
A: Yes. We provide full technical support for EPC projects, including datasheets, type test reports, factory acceptance tests (FAT), site technical assistance, material traceability documentation, and customized cable design based on project single-line diagrams and cable schedules[reference:43]. We are a trusted partner for global EPC contractors.
Q15: What is the typical lead time for power cable orders?
A: Typical lead time is 20 days after order confirmation, depending on quantity and specifications[reference:44]. Large-volume EPC project orders may require additional lead time. Samples are available upon request[reference:45].
Q16: Can you provide custom power cable designs for specific projects?
A: Yes. We offer fully customized power cable solutions including custom conductor sizes, core counts, voltage ratings, sheath materials, armor types, flame retardant grades, and special markings. Our engineering team works closely with EPC contractors to develop cables that meet specific project requirements and technical specifications.
Q17: What is the difference between single-core and multi-core power cables?
A: Single-core cables have one conductor and are typically used for higher voltage applications or where large conductor sizes are required. Multi-core cables (2-core, 3-core, 4-core, 5-core) have multiple conductors in a single cable, offering space savings, easier installation, and reduced overall cost for three-phase power distribution systems[reference:46].
Send your project specification, single-line diagram, or cable schedule. Our engineering team will reply with a customized BOM, datasheet & FAT plan within 24 hours.
WhatsApp / Zalo: +86 17856068126 | Email: [email protected]
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