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Help Center600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
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600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
1). Standards for 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
The 1kV/3kV PVC insulated (fire-resistant) power cable meets the national standard of GB/T 12706-2008 which is equal to IEC 60502-2004. The fire resistant property conforms to the GB/T 18380-2008 which means that it also satisfies IEC 60332-2004.
2). Application Properties for 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
1. Rated voltage U0/U: 0.6/1kV, 1.8/3kV
2. Permitted long-term working temperature: 70℃
3. Short circuit: Conductor temperature ≤160℃, lasting time ≤5 seconds
4. The ambient temperature should above 0℃ when laying, and preheating is necessary if the temperature is below 0℃. The laying process is not affected by the drop height.
5. Minimum bending radius during laying: 20 times of outer cable diameter for single core type, and 15 times for multi-core type.
6. The neutrality of five-core power cable is distinct from the earth wire, and the system is very stable.
3). Applications for 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
This PVC insulated power cable is suitable for electricity transmission and distribution line whose rated voltage is 0.6/1kV. The fire resistant type is used in places where high cable density and good fire-proof property are required, such as subway, power station, high-rise building, entertainment place, large industrial and mining enterprises, etc.
4). Model Explanationfor 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
| Model | Descriptions | Applications | |
| Cu Core | Al Core | ||
| V V VY |
VLV VLY |
PVC insulated and PVC sheathed power cable PVC insulated and PE sheathed power cable |
This type of power cable is laid outdoors, such as tunnel and pipeline. External mechanical force should be avoided. |
| V V22 V V23 |
VLV22 VLV23 |
PVC insulated, steel tape armored and PVC sheathed power cable PVC insulated, steel tape armored and PE sheathed power cable | This type of power cable can be installed indoors, outdoors, underground, in the pipeline as well as in the tunnel. In addition, external mechanical force is applicable. |
| V V32 V V33 |
VLV32 VLV33 |
PVC insulated, thin steel wire armored and PVC sheathed power cable PVC insulated, thin steel wire armored and PE sheathed power cable |
This type of power cable is suitable for both indoor and outdoor places, such as tunnel, duct, water, vertical well, or places with high drop height. It can withstand external mechanical force and pretty big tensile force. |
Note:
1. The models also contain fire-resistant type.
2. When signing the contract, the fire resistant type must be specified. For example, if type A is preferred, please add "A" to the end of "FR", forming "FRA", and A is usually used in places where the fire resistant property is highly required. B and C follow the same rule. In addition, if there is no letter after "FR", the cable will be produced following "FRC".
5). Production Range for 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
| Model | Nominal Cross Section (mm2) | ||||
| Single Core | Two Core | Three Core | Four Core | Five Core | |
| V V VLV VY VLY V VR(VRV) |
1.5-800 | 1.5-800 | 1.5-800 | 1.5-800 | 1.5-800 |
| V V22 VLV22 V V23 VLV23 |
- | 4-300 | 4-400 | 4-400 | 4-400 |
| V V32 VLV32 V V33 VLV33 |
10-800 | 10-800 | 10-800 | 10-800 | 10-800 |
Note:
1. Fire-resistant type is also supplied.
2. There are different cross section structures for the four-core type and five-core type. For the four-core type, the four cores have equal cross sections, or three of them have bigger cross section than the left one. For the five-core type, the five cores may share the same cross section, or four of them are bigger than the rest, or three of them are bigger while the other two are smaller.
6). Correction Factors of Current Capacity for Different Thermal Resistivity Coefficients of Soil
| Rated Voltage (kV) | Cross Section (mm2) | Thermal Resistivity Coefficient of Soil (K·m/W) | ||||
| 0.8 | 1.0 | 1.2 | 1.5 | 2.0 | ||
| 0.6/1 1.8/3 | 35 and below | 1.06 | 1.00 | 0.95 | 0.88 | 0.87 |
| 50-100 | 1.08 | 1.00 | 0.94 | 0.87 | 0.77 | |
| 185 and above | 1.09 | 1.00 | 0.93 | 0.85 | 0.76 |
|
Note: Thermal resistivity coefficient of soil: PT=1.0 K•m/W.
7). Correction Factors of Current Capacity at Different Ambient Temperature
| Operating Temperature (℃) | Air Temperature (℃) | Soil Temperature (℃) | ||||||||||||||
| 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | |
| 90 | 1.26 | 1.22 | 1.18 | 1.14 | 1.09 | 1.04 | 1.00 | 0.94 | 0.89 | 1.14 | 1.11 | 1.07 | 1.04 | 1.00 | 0.96 | 0.92 |
Note: Ambient temperature: 40℃ for air and 25℃ for soil.
8). Cable Length for for 600V/1000V LV Singe-Core Non-Sheathed Fire Resistant Electric Cable
For most cases, the PVC insulated power cable is transported in drum, and the total length is often longer than 100 meters. However, cables with length of less than 20 meters can also be delivered, but their amount should not exceed 10% of the total length. Based on the negotiation, any length is available, and the length error is within ±0.5%.
9). Color of Cores for 600V/1000V LV Single-Core and Multi-Core Fire Resistant Electric Cable
| No. of Cores | Color and Number Mark of Insulated Core | ||
| Main Core Neutral Core |
Grounding Core | Neutral Core (No.5 Core) |
|
| 1 | Random Color | - | - |
| 2 | Red 1 | Blue 0 | |
| 3 | Yellow 1, Green 2, Red 3 | - | |
| 3+1 | Blue 0 | ||
| 4 | |||
| 3+2 | Yellow 1, Green 2, Red 3, Blue 4 | Black 0 | |
| 4+1 | - | Black 0 |
|
For the 0.6/1kV PVC insulated power cable, its resistivity should be over 36.7MΩ•km at 20℃. Meanwhile, voltage withstand test is applied to the finished product, and the test condition is AC 3.5kV, 50Hz, 5 minutes. During this period, breakdown should not occur.
After the cable is laid, DC voltage withstand test should be carried out. The recommended test voltage is 4U0 where U0 is the conductor's voltage to earth, and for this product, U0 is 0.6kV. The test time is 15 minutes. In addition, the fire resistant property should meet the requirements of vertical flame propagation test of GB/T 18380.3-2008 and IEC 60332-2004 standards.
With Yiteng, all cables are produced by strict inspection and testing:
1). Raw Material: Copper, Aluminium, PVC, PE and XLPE granules and all other materials for producing cables are all inspected carefully automatically. Only the qualified will be applied into cable production, the disqualified will be rejected.
2). Production Procedure: Cables in Yiteng are produced by advanced cable production machines.
3). Testing: Cables in Yiteng will not be packed until they are tested totally qualified. Cable Testing Machines includes Online Core Shift Detection Device, Tension Tester, Aging Test Chamber, Experimental Apparatus of Combustion, Insulation Resistance Tester and etc…
4). Package and Shippment:
With Yiteng Cable,
1. Cables are packed in standard export drums or other ways per customer's requirement;
2. Cables are handled and shipped carefully to ensure perfect package upon customer's receipt.
Yiteng Cable Technology Hebei Co., Ltd. sincerely ensure every present and potential customers and friends that we will always:
1. Make A Response with 12 Hours to All Custoemers;
2. ISO9001, ISO14001, CCC Certificates for Factory and Cable Products;
3. Factory Direct Supply and OEM Service of Cable Products;
4. Yiteng Cable will not only serve goods before selling, but will be better and better during sales and after sales;
5. All Customers' Information will be kept confidential without permission.
6. Yiteng Cable can also help customers to seek for and inspect goods and factories of other categories once our cable deal is stable.
Yiteng Cable Technology Hebei Co.,Ltd. is a specialized manufacturer of cables, including:
√ Aluminum Alloy Cable with or without Armor and Interlock,
√ Control Cable with Multi-Cores,
√ Computer Cable with Individual and General Shileding and PE/ PVC/ XLPE Insulation,
√ Shielded Cable or Screened Cable,
√ ABC Cable in Aluminum for Overhead Application,
√ Power Cable with PE/PVC/XLPE Insulation and PVC Sheath and Armor,
√ Rubber Cable for General Purposes, Welding Machines or for Mining,
√ Armored Cable with Steel Tape or Steel Wire Armor,
√ PVC Cable with PVC Insulation and PVC Sheath,
√ Low Voltage Power Cable,
√ Medium Voltage Power Cable,
√ Fire Resistant Cable and Flame Retardant Cable,
√ Mining Cable, Flexible Rubber Mining Cable, PVC and XLPE Insulated Power Mining Cable,
√ High Temperature Cable, including silicone rubber insulated cable and Teflon insulated cable
Questions and Answers!
Experts of Yiteng Cable will always wait to answer all your questions!
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