
YJV22 6/6kV 3 × 70
This product is suitable for AC rated voltage 35kV and below lines for transmission and distribution of energy. Commonly used in urban underground power grids, power station leads, industrial and mining enterprises internal power supply and underwater transmission lines across the river and sea.
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- Product Description
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- Commodity name: YJV22 6/6kV 3 × 70
This product is suitable for AC rated voltage 35kV and below lines for transmission and distribution of energy. Commonly used in urban underground power grids, power station leads, industrial and mining enterprises internal power supply and underwater transmission lines across the river and sea.
Scope of application
This product is suitable for AC rated voltage 35kV and below lines for transmission and distribution of energy. Commonly used in urban underground power grids, power station leads, industrial and mining enterprises internal power supply and underwater transmission lines across the river and sea.Executive standard
This product implements GB/T12706 "Extruded Insulated Power Cable with Rated Voltage of 1kV(Um = 1.2kV) to 35kV(Um = 40.5kV)", GB/T12706.2 Part II: Rated Voltage of 6kV(Um = 7.2kV) to 30kV(Um = 36kV)GB/T12706.3 Part III: Rated Voltage of 35kV(Um = 40.5kV).Use characteristics
1. The allowable long-term working temperature of cable conductor is:Maximum Conductor Temperature of Various Insulation Mixture Cables (GB/T12706.2 Part 2)
insulating mixture
Maximum conductor temperature ℃
Normal operation
Short circuit (maximum duration 5S)
Polyvinyl chloride (PVC/A)
Conductor cross-sectional area ≤ 300mm2
Conductor cross-sectional area> 300mm2
Cross-linked polyethylene (XLPE)70
70
90160
140
250Maximum Conductor Temperature of XLPE Cable with Insulation Mixture (GB/T12706.3 Part 3)
insulating mixture
Maximum conductor temperature ℃
Normal operation
Short circuit (maximum duration 5S)
Cross-linked polyethylene (XLPE)
90
250
2. The ambient temperature during cable laying shall not be lower than 0 ℃;
3. Minimum allowable bending radius for cable laying:Project
single core cable
multi-core cable
Minimum bending radius of cable at installation
No Armored
armored
No Armored
armored
20D
15D
15D
12D
Note: D is the outer diameter of the cable
4. Rated voltage
The power frequency rated voltage U0/U(Um) of GB/T12706.2 Part II cables is 3.6/6(7.2)kV, 6/6(7.2)kV, 6/10(12)kV, 8.7/10(12)kV, 8.7/15(17.5)kV, 12/20(24)kV and 18/30(36)kV.
GB/T12706.3 Part III: The power frequency rated voltage U0/U(Um) of the cable is 21/35(40.5)kV and 26/35(40.5)kV.
U0: Rated power frequency voltage between conductor to ground or metal shield for cable design;
U: Rated power frequency voltage between conductors for cable design;
Um: The maximum value of the "maximum system voltage" that the device can withstand.routine test
Rated voltageU0(KV)
6
8.7
12
18
21
26
Test voltageU(KV)
21
30.5
42
63
73.5
91
Duration (min)
5
5
5
5
5
5
Partial discharge shall be in accordance with GB/T3048.12-2007. When the voltage is 1.73 U0, there shall be no partial discharge and no breakdown of insulation during 5min voltage test.
Flame retardant, halogen-free low smoke cable performance in line with GB/T19666-2019, GB/T18380-2008.Common cable model
Model
Name
COPPER CORE
Aluminum core
YJV
YJY
YJV22
YJV23
YJV32
YJV33YJLV
YJLY
YJLV22
YJLV23
YJLV32
YJLV33XLPE insulated PVC sheathed power cable
XLPE insulated PE or polyolefin sheathed power cable
XLPE insulated steel tape armored PVC sheathed power cable
XLPE insulated steel tape armored PE or polyolefin sheathed power cable
XLPE insulated fine round steel wire armored PVC sheathed power cable
XLPE insulated fine round steel wire armored PE or polyolefin sheathed power cableFlame retardant characteristics are not included in the model in the table
Flame retardant, halogen-free low smoke cable performance in line with GB/T19666-2019, GB/T18380-2008.
Cable structure diagram and pictures
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