33 KV Pin Insulators
NP-INDIA pin insulators of one piece or multi piece construction are widely used in low cost distribution lines. Multi piece construction makes these insulators less vulnerable to damage as with one shell broken a multi piece insulator can normally withstand the line voltage for a considerable time without difficulty. NP-INDIA manufacturers full range of pin insulators for application in sub-transmission and distribution lines upto a system voltage of 66/72 kV. These insulators are available with creep age path to meet various requirement of pollution. The recommended system voltage foe a particular type is adequate for satisfactory performance as NP-INDIA pin insulators are designed for natural cleaning by wind and rain and operate successfully with no attention whatsoever under normal deposit of atmospheric dirt. NP-INDIA insulators are tested and guaranteed for cantilever strength and are provided with adequate margin of safety. Available range upto 900 mm CD
LT Pin Insulators
The choice of low tension insulators are guided by the relative reliability of the secondary lines and constructional practices adopted by the different electricity supply undertaking. L.T. pin insulators are also used in tangent locations. These are provided with a top groove and threaded to take mild steel pins. The Pin insulators are generally suitable for a minimum failing load of 3.5 kN.
11 KV Post Insulators
NP-INDIA post insulators are made from high quality electrical grade porcelain which provides excellent electrical and mechanical properties. All post insulators are assembled by jig and fixture to ensure accuracy of overall height, parallel of end faces and correct alignment of fixing holes. Available range:
- 230 mm CD
- 280 mm CD
- 320 mm CD
NP-INDIA cap & pedestal type post insulators are designed mainly to support disconnecting switches, busbars, conductors and equipment of substations. They are capable of being stressed in tension, compression, flexing, torsion and combined stresses upto the specified limits. These insulators are more economical than other types of insulators used for similar applications. Cap & Pedestal type post insulators are divided into two main groups, viz. non-stacking and stacking units. For service voltage upto 33 kV single units are available. Multi-unit stacks are available for service voltage up-to 145 kV.