Jiangsu Shitate Intelligent Power Co., Ltd.
CONTACT US
Jiangsu Shitate Intelligent Power Co.,LTD.
E-Mail: sttxs@jsshitate.com
Telephone: +86-18852493399
Telephone: +86-18626077857
Address: No. 5 Datian Road, Guanlin Town, Yixing City
220kV integral prefabricated insulating part insulation / straight connector
Description
Product Features
The main insulation of the product is the integral prefabricated structure, the high pressure shielding, the stress cone and the insulation piece are injected into a whole piece, the structure is simple, and the installation is convenient.
The outer shielding layer of the main insulating piece is made of semi conductive silicone rubber, so as to avoid the defect that the spraying surface is easy to be damaged.
The shell is made of high strength copper shell protection box, high mechanical strength, good sealing performance.
The main insulation parts have been tested in the factory according to the standard.
Products Comply With The Following Standards
GB/T 18890.3-2015 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220kV (Um=252kV). Part 3: Accessories
IEC 62067-2011 Power cables with extruded insulation and their accessories for rated voltages above 150kV (Um=170kV) up to 500kV (Um=550kV). Test methods and requirements
Main technical parameters
| Item | Technical parameters |
| Rated voltage and frequency | 127/220kV, 50Hz |
| Max peration voltage | 252kV |
| Environment temperature | -40℃~+40℃ |
| Rated operating temperature of conductor | 90℃ |
| Max temperature of cable conductor at short circuit | 250℃ |
| The cross section of the cable shall apply | 240~2500mm² |
| Partial dischange test (at ambient temperature, 190kV) | NO ddelectable discharge at the declared sensitivity (5pC or better) |
| Heating cycle voltage test (254kV, 95℃~100℃, heating 8h, cooling 16h) | Completed 20 cycles |
| Partial dischange test (at high temperature, 190kV) | NO ddelectable discharge at the declared sensitivity (5pC or better) |
| Impluse voltage test followed by a power frequency voltage test - Impluse voltage test (95℃~100 C, ±1050kV, 10times, respectively) - Power frequency voltage test (254kV, 15min) |
NO breakdown NO breakdown |
|
Test of outer protection for buried joints Impulse valtage tests |
NO breakdown NO breakdown |
Product size
Keyword:
220kV integral prefabricated insulating part insulation / straight connector
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Telephone
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Address
No. 5 Datian Road, Guanlin Town, Yixing City