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Wrap-around straight-through intermediate connector
Wrap-around straight-through intermediate connector
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Application areas:
Wrapped straight-through intermediate joints are suitable for intermediate splicing of power cables with voltage levels of 35kV and below. Due to the highly flexible combination of the wrapping joints, they can meet various requirements such as splicing, extension, and cross-section splicing of single-core and three-core cables ranging from 25mm² to 630mm².
Product Description
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Wrap-around joints are splicing products that restore the cable's structure and function layer by layer through a tape wrapping process. Each tape has professional electrical properties, and its self-adhesive and self-fusion properties allow the tape to quickly fuse with the cable and with each other, greatly reducing the possibility of gaps during construction. The advantage of wrap-around joints lies in the use of multi-layer tape composite wrapping, resulting in good waterproof and sealing performance, ensuring the long-term reliable operation of the cable.
Product Parameters
Schematic diagram of 8.7/15kV wrapped straight-through intermediate joint structure
Electrical performance of 8.7/15kV wrapped straight-through intermediate joint
| Power frequency withstand voltage (AC) 39kV/5min | No penetration, no flashover |
| Partial discharge 15kV | ≤10pC |
| Impulse voltage 95kV (10 times each for positive and negative polarities) | No penetration, no flashover |
| Constant pressure load cyclic test in air (22kV, 95℃～100℃, 5h heating and 3h cooling per cycle, 30 cycles in total). | No penetration, no flashover |
| Constant pressure load cyclic test in water (22kV, 95℃～100℃, 5h heating and 3h cooling per cycle, 30 cycles in total). | No penetration, no flashover |
| Note: This product meets the requirements of IEC 60502.4 and GB/T 12706.4. | |
Schematic diagram of 26/35kV wrapped straight-through intermediate joint structure
26/35kV Wrapped Straight-through Joint Electrical Performance
| Power frequency withstand voltage (AC) 117kV/5min | No penetration, no flashover |
| Partial discharge 45kV | ≤10pC |
| Impulse voltage 200kV (10 times each for positive and negative polarities) | No penetration, no flashover |
| Constant pressure load cyclic test in air (65kV, 95℃～100℃, 5h heating and 3h cooling per cycle, 30 cycles in total). | No penetration, no flashover |
| Constant pressure load cyclic test in water (65kV, 95℃～100℃, 5h heating and 3h cooling per cycle, 30 cycles in total). | No penetration, no flashover |
| Note: This product meets the requirements of IEC 60502.4 and GB/T 12706.4. | |
Wolong Electric is committed to continuous product improvement, therefore we reserve the right to change designs, dimensions, and data without prior notice.
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