General Description:
The document provides an overview of medium voltage (MV) cables offered by Ningbo Dowei Electric Co., Ltd. These cables comply with various international standards such as ISO 9001, IEC, CE, RoHS, CCC, KEMA, BS, DIN, and ICEA. The cables feature a compact stranded copper conductor, a semi-conductor conductor screen, XLPE insulation rated at 90°C, and a PVC or FR-PVC sheath.

Product Scope:
The cables are available in different rated voltages: 6/10 kV, 8.7/15 kV, 12/20 kV, 18/30 kV, 21/35 kV, and 26/35 kV. They can withstand a maximum conductor temperature of 90°C under normal conditions, 130°C in emergencies, and 250°C for short circuits lasting up to 5 seconds. The minimum ambient temperature for operation is -15°C, with an installation temperature of 0°C. The minimum bending radius is specified as 20 times the cable's outer diameter for single-core cables and 15 times for multi-core cables.

Typical Specification:
The document details specifications for XLPE insulated MV power cables, including nominal cross-section of the conductor, insulation thickness, sheath thickness, approximate outer diameter, weight, maximum DC resistance of the conductor at 20°C, test voltage, and current rating in air and soil. For example, a 1×50 mm² cable has an insulation thickness of 10.5 mm, a sheath thickness of 2.2 mm, an approximate outer diameter of 39.0 mm, and a weight of 1758 kg/km. It has a maximum DC resistance of 0.387 Ω/km and a test voltage of 91 kV/5min, with current ratings of 220 A in air and 215 A in soil.

Contact Information:
Ningbo Dowei Electric Co., Ltd. is located at 608, Lingyun Building No.1, High-tech Zone, Ningbo, Zhejiang, China. For inquiries, they can be contacted via phone at +86-15088801930 or email at [email protected]. More information is available on their website, www.dowei-electric.com.