ZMS cable

2. Rating of Power Cable Short Circuit Rating It happens frequently that the conductor size necessary for an installation is dictated by its ability to carry short-circuit current rather than sustained current. During a short – circuit, there is a sudden inrush of current for a few cycles followed by a steadier flow of current for a short period until the protection switchgear operators, normally between 0.1-0.3 seconds. Conductor Size and Material Insulation Material Operating Maximum Temperature Short Circuit Rating 120 sq-mm Copper conductor PVC Insulation 70oC 13.80 KA/SEC 120 sq-mm Aluminium conductor PVC Insulation 70oC 9.12 KA/SEC 120 sq-mm Copper conductor PVC Insulation 85oC 12.48 KA/SEC 120 sq-mm Aluminium conductor PVC Insulation 85oC 8.28 KA/SEC Current Carrying Capacity Current carrying capacity is an important aspect is the selection of the optimum size of conductor. Voltage drop and short rating is also very important aspect to ...

Electric power can be transmitted or distributed either by overhead system or by underground cable. Cables are mainly designed as per requirement. Power cables are mainly used for power transmission and distribution purpose. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. The assembly is used for transmission and distribution of electrical power. Electrical power cables may be installed as permanent wiring within buildings, buried in the ground and run overhead or exposed. Flexible power cables are used for portable devices, mobile tools and machinery. These are designed and manufactured as per voltage, current to be carried, operating maximum temperature and purpose of applications desired by customer. For mining, we give extra mechanical strength to cable with double armouring. For wind power plant customers generally require flexible and UV protected cable with mechanical tough sheath so we design as...