110kV to 220kV intermediate joint price_Manufacturer_How much

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110kV to 220kV intermediate joint

Negotiable

Chongqing Taishan Cable Co.,Ltd.

Located Region:

China

Address:

No. 17, Shiyan Avenue, Yufengshan Town, Yubei District, Chongqing City

Biz Consulting:

+86 02361898070

E-mail:

tanxc2017@163.com

Online Contact

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The intermediate joint is used to connect two cables. Its main function is to restore the cable’s performance, ensure the extension of the cable length, and allow for safe and reliable operation. Based on the cable’s metal shielding connection method, the joint can be categorized into through joints and insulating joints.

Through joints are used for direct cable-to-cable connections. The metal sheath, grounding shield, and insulation shield of the cable are electrically connected, used in applications where the cable line is directly grounded.

Insulating joints electrically disconnect the metal sheath, grounding shield, and insulation shield of the cable, used in cable lines with crossover or interchanging installations, reducing sheath loss.

110kV insulating joints and through joints are suitable for 240mm²-1600mm²;

220kV insulating joints and through joints are suitable for 400mm²-2500mm².

Product Parameters
Project	Technical parameters
Project	110kV intermediate joint	220kV intermediate joint
Rated voltage and frequency	64/110kV, 50Hz	127/220kV, 50Hz
Maximum operating voltage	126kV	252kV
Ambient temperature	-40 ℃-+50 ℃	-40 ℃-+50 ℃
Maximum conductor temperature during normal operation	90 ℃	90 ℃
Maximum conductor operating temperature at short circuit	250 ℃	250 ℃
Applicable cable cross-sectional area	240mm ²-1600mm ²	400mm ²-2500mm ²
Partial discharge test	96kV, no detectable discharge	190kV, no detectable discharge
Power frequency voltage test	160kV,60min, no breakdown	318kV,60min, no breakdown
Lightning impulse voltage test	± 550kV, 10 times each, no breakdown, no flashover	± 1050kV, 10 times each, no breakdown, no flashover
Impact test of insulation joint after immersion in water	± 75kV between metal sheaths at both ends, 10 times each, no breakdown occurred The metal sheaths at both ends shall be ground ± 37.5kV, 10 times for each, no breakdown occurred	± 95kV between metal sheaths at both ends, 10 times for each, no breakdown occurred The metal sheaths at both ends shall be ground ± 47.5kV, 10 times for each, no breakdown occurred