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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

66~110kV Integral prefabricated insulation/ straight through intermediate joint
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  • 66~110kV Integral prefabricated insulation/ straight through intermediate joint

66~110kV Integral prefabricated insulation/ straight through intermediate joint

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.

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 11017.3-2014 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 110kV (Um=126kV). Part 3: Accessories

IEC 60840-2011 Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um=36kV) up to 150kV (Um=170kV). Test methods and requirements

Main technical parameters

Item Technical parameters
Rated voltage and frequency 64/110kV, 50Hz
Max peration voltage 126kV
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 240~1600mm²
Partial dischange test (at ambient temperature, 96kV) NO ddelectable discharge at the declared sensitivity (5pC or better)
Heating cycle voltage test (128kV, 95℃~100℃, heating 8h, cooling 16h) Completed 20 cycles
Partial dischange test (at high temperature, 96kV) 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℃, ±550kV, 10times, respectively)
- Power frequency voltage test (160kV, 15min)
NO breakdown or flashover
NO breakdown or flashover

Test of outer protection for buried joints

Voltages tests
- Between the metal sheaths (DC 25kV/1min)
- Between the metal sheaths and the earthed exterior of the joint outer protection (DC25kV/1min)

Impulse voltage tests
- Between the metal sheaths (±75kV, 10times, respectively)
- Between the metal sheaths and the earthed exterior of the joint outer protection(37.5kV, 10times, respectively)

NO breakdown or flashover
NO breakdown or flashover

NO breakdown or flashover
NO breakdown or flashover

Product size

Keyword:

66~110kV Integral prefabricated insulation/ straight through intermediate joint

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