According to GB12706( Equal to IEC60502)Also can do by standard of ASTM, BS, DIN and AS/NZS or other standards as request.
2. Rated Voltage:
6/10(12)KV; 1.8/3(3.6)KV; 8.7/15(17.5)KV; 12/20(24)KV; 18/30(36)KV
NO. Of cable cross: 1 core(Single core), 2cores(Double cores), 3cores, 4cores(4 equal-section-area cores OR 3 equal-section-area+1 small section area neutral core), 5cores(5 3 equal-section-area cores+2 small area neutral cores OR 4 equal-section-area +1 small area neutral cores). We provide armored type and non-armored type for the cables stated above.