Buying the Best Electric Power Cables Online in India

Power cables are the fundamental parts of any electrical system. Various types of electric power cables are available in the market today. Several factors decide the right cable choice for usage in specific purpose. The technical specifications of the functions is the most important factor of them all. Here is a short guide to buying the best electric power cables online in India.

1.Installation

Electric power cables are used for indoor and outdoor installations. In order that the chosen cable system will function efficiently, you need a good understanding of the local conditions, the installation team and maintenance people. Often, the application of incorrect pulling tensions weaken or damage the cable insulation. So, the conduit system designs should not only minimize the distances between manholes and the number of conduit bends, but also mention the pulling tensions.

Apart from ensuring that the mentioned values are not exceeded, the correct bending radius should also be maintained. And, such kind of right installation, carry out regular inspection, testing and maintenance.

2.Cable construction

The type of cable construction required for a specific installation should also be considered for selecting power cables. Cable construction includes conductors, cable arrangement, insulation and sheathing. It is better to go for cables with aluminum and copper conductors. When cable arrangement is taken into consideration, there are three-conductor and single-conductor cables.

Both have their own set of merits and demerits. While single conductors allow the construction of multiple-cable circuits, are easier to splice, and are easier to install, these have higher reactance. Shielded single conductors can conduct high shield currents. However, overheating of the cable must be avoided. Three-conductor cables with an overall sheath offers a balanced voltage stress distribution, and has the lowest reactance.

3.Cable operation

The cable insulation must be able to tolerate the voltage stresses posed during both normal and abnormal conditions of operation. There are three categories of insulation levels including 100%, 133%, and 173%. The 100% insulation level cables should be used where relay protection that rectifies ground faults within 1 minute is used.

The 133% insulation level cables should be used where relay protection that rectifies ground faults within 1 hour is used. And 173% insulation level cables should be used where the time required for this clearing is indefinite.

4. Cable size

The right cable size for a particular requirement should be chosen on the basis of its current carrying capacity, short circuit rating, and voltage regulation. Go for cables of current carrying capacity more than 500 MCM. The chosen cables should have short circuit withstand capability. And their voltage drop limit should be 5%.

5.Shielding

There are both shielded and non-shielded cables available at the market. The type of insulation system, the reliability and safety requirements of the system, and whether the system neutral is grounded or ungrounded are the three considerations that decide whether you need to go for a shielded cable or a non-shielded one.

Intense electric fields can damage certain insulation systems. And, ungrounded systems having non-shielded cable, such damages can be caused by current leakage. The duct-type installations having nonmetallic, non-shielded cable pose serious safety hazards. Same is the case for exposed overhead cable installations, cable assemblies and portable cables.

Now that you know how to buy the right cable for your need, you can buy the best electric power cables online in India from Igus.