EPR insulated power cable for rated voltage up to and including 35kV
EPR insulated power cable for rated voltage up to and including 35kV are widely used in power plants, power stations, ports, petrochemical, etc
Application
EPR insulated power cables are widely used in power plants, power stations, ports, petrochemical and other occasions.
It has the characteristics of flexible, high mechanical strength, abrasion resistant and stable electrical performance in humid environment etc.
Executive Standard
GB/T 12706 equivalently adopt lEC 60502 standard, and flame retardant tests are executed GB/T 18380.33-35 equivalently adopt IEC 60332-3 standard.
Service Property
1. The rated voltage U,u of the cable should be 0.6/1kV, 1.83kV, 3.6/6kV, 6/6kV, 6/10kV, 8.7/10kV, 8.7/15kV,12/20kV, 18/20kV, 18/30kV, 21/35kV, 26/35kV etc.
2. Maximum operating temperature of cable conductor should be 90℃. When short circuit (lasting no longer than 5 seconds) maximum operating temperature of cable conductor should be 250℃.
3.When laying, cable can withstand greater horizontal drops.
4. Allowed bending radius of single core non-armored cable should be not less than 20 times outer diameter of the cable: of single core anmored cable should be not less than 15 times outer diameter of the cable; of multi-core non-ammored cable should be not less than 15 fimes outer diameter of the cable; of multi-core armored cable should be not less than 12 times outer diameter ofthe cable.
Type & Description
| Type | Description |
|---|---|
| EV、ELV | Copper or aluminum core EPR insulated PVC sheathed power cable |
| EY、ELY | Copper or aluminum core EPR insulated PE sheathed power cable |
| EV22、ELV22 | Copper or aluminum core EPR insulated steel tape armored PVC sheathed power cable |
| EV23、ELV23 | Copper or aluminum core EPR insulated steel tape armored PE sheathed power cable |
| EV32、ELV32 | Copper or aluminum core EPR insulated thin steel wire armored PVC sheathed power cable |
| EV33、ELV33 | Copper or aluminum core EPR insulated thin steel wire armored PE sheathed power cable |
| EV42、ELV42 | Copper or aluminum core EPR insulated thick steel wire armored PVC sheathed power cable |
| EV43、ELV43 | Copper or aluminum core EPR insulated thick steel wire armored PE sheathed power cable |
Code & Meaning
| Item | Code | Description |
|---|---|---|
| Burning characteristic | Z (A/B/C) | Flame retardant grade (A/B/C) |
| N | Fire resistant | |
| DDZ | Low smoke low halogen fame retardant | |
| WDZ | Low smoke halogen free flame retardant | |
| WDZN | Low smoke halogen free flame retardant fire resistant | |
| Conductor | - | Class 1 and 2 copper conductor |
| R | Class 5 copper conductor | |
| L | Aluminum conductor | |
| Insulation | E | EPR |
| Shield | S | Copper wire winded sparsely |
| Sheath or inner sheath | V | PVC |
| Y | PE/polyolefin | |
| Armor layer | 2 | Steel tape armor |
| 3 | Thin steel wire armor | |
| 4 | Thick steel wire armor | |
| 6a | Non-magnetic metal tape amor | |
| 7b | Non-magnetic metal wire anmor | |
| Outer sheath | 2 | PVC |
| 3 | PE/polyolefin |
Main Technical Index
1.Conductor D.C.resistance at 20℃complies with stipulations of GB/T3956.
2. Power frequency voltage test:. withstand 2.5U0 +2kV for 5 minutes without puncture for cables of rated voltage up to andincluding 1 .8kV; withstand 3.5U0 for 5 minutes without puncture for cables of rated voltage up to and including 3.6kV.
3. Partial discharge test: discharge should not be detected when cable sensitivity is equal or superior to 10pC for cables of rated voltage Uo is 3.6kV and above.
Cable specification & structural parameter
| Type | Cores | Rated Voltage kV | ||||||
|---|---|---|---|---|---|---|---|---|
| 0.6/1 | 1.8/3 | 3.6/6 | 6/6, 6/10 | 8.7/10, 8.7/15 | 12/20 | 18/30, 36/35 | ||
| EV、ELV | 1 | 2.5-630 | - | - | - | - | - | - |
| 2.5-630 | 10-630 | 10-630 | 16-630 | 25-630 | 35-630 | 50-630 | ||
| EV、ELV | 2 | 2.5-185 | - | - | - | - | - | - |
| EV、ELV | 3 | 2.5-300 | - | - | - | - | - | - |
| 2.5-300 | 10-300 | 10-300 | 16-300 | 25-300 | 35-300 | 50-300 | ||
| EV22、ELV22 | 4-300 | - | - | - | - | - | - | |
| 4-300 | 10-300 | 10-300 | 16-300 | 25-300 | 35-300 | 50-300 | ||
| EV22、ELV22 | 4 | 4-185 | - | - | - | - | - | - |
| EV22、ELV22 | 3+1 | 4-300 | - | - | - | - | - | - |
| EV22、ELV22 | 5、3+2、4+1 | 4-185 | - | - | - | - | - | - |
Structure Diagram
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This product is suitable for single core soft cables on the DC side of photovoltaic systems with a maximum allowed DC voltage of up to 1.8kV (core-to-core, non-grounded system). Besides, It’s also suitable for use under Class II safety level. Temperature can reach 90℃, and multiple wires can be used in parallel.
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