Detailed Product Description
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IEC, DIN 1KV ~ 26 / 35KV PVC insulated power cable for transmission and distribution
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Product standard
The product is manufactured according to the standard of GB/T12706-2002, GB/T18380.3-2001, GB/T17650-1998 and GB/T17651-1998 or IEC and DIN and ICEA.
The product is suitable for power transmission and distribution lines with rated voltage 0.6/1 KV~26/35KV.
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Operating characteristics
Rated power frequency voltage U0/U: 0.6/1KV~26/35KV.
PVC insulated power cable Max. permissible continuous operating temperature of the conductor should not exceed 70℃, XLPE permissible continuous operating temperature of the conductor should not exceed 90℃.
Max. Short-circurrt temperature of conductor shall not exceed: PVC insulation 160℃, XLPE insulation 250℃. (5s maximum duration)
The installation temperature should not below 0℃
The flame-retardant properties of cable comply with the requirements specified in A kind of GB/T18380.3-2001
The flame-retardant properties of lower halogen cable comply with requirements specified in A kind of GB/T18380.3-2001 except complying with requirements specified in GB/T17651.2-1998.
The flame-retardant properties of no halogen cable comply with requirements specified in A kind of GB/T18380.3-2001 except complying with requirements specified in GB/T17651.2-1998. and GB/T17651-1998.
Three bending radius of a single core should not less than 20 times of the cable diameter.
Two bending radius of a three-core cable should not less than 15 times of the cable diameter.
The rated voltage of the cable for a given application shall be suitable for the operating condition in the system in which the cable is used, and is expressed in the form of U0/U (Um) are applied to the system voltages and running state, and expressed in the form U0/U (Um).
U0—The rated power-frequency voltage between conductor and earth or metallic screen, for which the cable designed.
U—The rated power-frequency voltage between conductors for which the cable designed.
Um—The maximum value of “the highest system voltage” for which the equipment may be used.
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The values U0 recommended for cables to be used in three-phase systems are listed below
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U
KV
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Um
KV
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U0*
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A&B system
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System categories C
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1
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1.2
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0.6
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0.6
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3
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3.6
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1.8
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3.6
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6
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7.2
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3.6
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6
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10
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12
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6
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8.7
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15
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17.5
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8.7
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12
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20
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24
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12
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18
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35
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40.5
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21
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26
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The first cable-suitable for one single-phase ear thing-block time does not exceed one minute each time. Max. time not exceed 8 hours, and not exceed 125 hours in all in one year.
The second class cable-suitable for more the ear thing-block time and more better insulated performa.
