This product is suitable for fixed installation in power transmission and distribution lines with an AC frequency of 50 Hz and a rated voltage of 35 kV (Um = 40.5 kV) or below, serving the purpose of transmitting electrical energy. Compared to PVC-insulated power cables, cross-linked power cables not only possess excellent electrical, mechanical, and thermal aging properties, but also demonstrate superior resistance to environmental stress and chemical corrosion. Furthermore, they feature a simple structure, light weight, freedom from installation height restrictions, and a high long-term operating temperature (90°C). The mechanical, physical, and electrical properties of these cables comply with the following national standards: GB/T 12706.1-2020 (for cables with rated voltages of 1 kV [Um = 1.2 kV] and 3 kV [Um = 3.6 kV]); GB/T 12706.2-2020 (for cables with rated voltages ranging from 6 kV [Um = 7.2 kV] to 30 kV [Um = 36 kV]); and

GB/T 12706.3-2020 (for cables with a rated voltage of 35 kV [Um = 40.5 kV]). In the cable voltage designation Uo/U(Um): Uo represents the rated power-frequency voltage between the conductor and the earth (or metal screen) used for cable design; U represents the rated power-frequency voltage between conductors used for cable design;

Um represents the maximum value of the "highest system voltage" that the equipment is capable of withstanding.

Usage Characteristics

1. Cable laying temperature: ≥ 0°C;

2. Maximum permissible long-term operating temperature of the cable conductor: ≤ 90°C;

3. Maximum operating temperature of the cable during a short circuit (duration not exceeding 5 seconds): 250°C;

4. Minimum permissible bending radius of the cable: Single-core cables: 20D (unarmored), 15D (armored) [mm]; Multi-core cables: 15D (unarmored), 12D (armored) [mm].

Key Electrical Characteristics

Production Scope

Production Scope

Note: 1. The specific number of cores and cross-sectional area are determined by the cable model and voltage rating.

2. For 0.6/1 kV and 1.8/3 kV cables, the silane (warm water) cross-linking method or irradiation cross-linking method is employed; for 3.6/6 kV to 26/35 kV cables, the chemical cross-linking method is used.