NSS gensets is one of the largest distributor of sudhir transformers, package substations, HT Panels & LT Panels thus, playing a major role in contributing to the electrical power sector
HV & LV wound coils are separated by means of fiber glass cylinders & supported on the frame by special porcelain supports. HV coils are made in disc form, using enameled & fiberglass covered copper strips.
All conductors are treated with Polyesteramide resin during covering stage to achieve inter-turn di-electric strength of 6-8KV & eliminating trapped mechanical forces during the thermal operating cycle.
Each unit is tuned for optimum efficiency while operating between 45% and 65% of full load (which is the average loading) by delicate proportioning of core and winding losses.
By using CRGO silicon steel mitred cores and paper enamel covered conductors the units are made compact, resulting in lower losses, better regulation and longer life.
Careful design of the core and tank reduces noise level to the minimum. The clamping method adopted helps to keep the optimum properties of the grain-oriented silicon steet, without reducing their mechanical stability.
Winding on HT side are provided with sufficient end-turn reinforcement for extra strength. Windings are pre shrunk and impregnated under, vacuum with hot dry Transformer oil before assembly to ensure their proper functioning.
Radial as well as axial clearances and cooling ducts provided for the coils add to the safety and uniform cooling of the windings and limbs.
Windings are designed to withstand sufficient thermal, dynamic and electrical stresses induced during operation as well as under short circuit conditions.
Each tank is pressure tested and the exterior surface coated with primer and 2 coats of weather-proof paint, the shade being dark grey 1110. 6 of IS-5/1980. The interior is given anti-corrosive protection with oil Hesistant varnish.
Transformers are supplied with first filling of insulating oil conforming to IS-335/1980.
Voltage regulation is provided with winding tappings as per customer's specifications generally at +/- 2.5% and +/- 5% of input voltage. As a standard, Tap changing is effected by means of externally hand-operated 'OFF CIRCUIT' tap-changing switch.
On-Load tap changers (OLTC) with variety of steps to offer optimum control can be offered. All tap-changing switches have indicators and locking device. Special Multi tapping transformers are also in the product range, besides the special duty transformers.
Every transformer undergoes a series of tests throughout the manufacturing process, right from raw material stage to final stage. All routine tests are carried out at our works as per IS 11171, IEC 726 and other International Specifications.
Type tests for impulse withstand short Circuit strength etc have been conducted on representative ratings and voltage classes, at approved national test houses. The ISO certificate has also been revalidated recently.
"Sudhir is a leading Panel manufacturer in North India and an Alliance partner of Schneider. Their range offer state of art switchgear for 11 & 33kV with cutting edge technologies in VCB & SF6 upto 1500MVA fault levels." HVX is the latest range of vacuum circuit breakers. It offers proven state-of-the-art design to meet to specification for power switching devices in air-insulated switchgear upto 36 kV. HVX brings a valuable solution to your project. "They have brought together the combined experience of our partner Schneider Electric to bring the latest technology with time - tested and proven reliable design." This latest addition to their range of vacuum interrupters reinforces our technological position as vacuum switching market leader. Thanks to the improved contact design, their interrupters provide unrivalled performance for their reduced size. Operating mechanisms have been simplified to increase reliability and give extended life with very low maintenance. Instead of the traditional spring operating mechanism, HVX decreed a singIe-shaft system and only one torsion spring, reducing the number of parts an increasing the reliability. The HVX panel meets the latest requirements of IS and ANSI standards
Ranging from 11 - 33 kV Foremost in quality of workmanship and investment in “state of art” technology to manufacture world class LT Switchboards, Sudhir has established themselves as a symbol of quality and innovation in this field. In recognition to their world-class quality standards they have been awarded with the ISO 9001-2000 certification. Their Panels have been successfully tested at CPRI to withstand short circuit levels of 50/70 & 100 KA with ACB, IP 54, 55 & 65 degree of protection & Temperature rise as per international standards. Sudhir's Design and Engineering department is well equipped with Computer Aided Design (CAD) systems and drafting facilities for accurate and quick preparation of design & execution.
The Schnieder-Sudhir MV/LV prefabricated substation is part of a comprehensive offer of products with consistent design. The PSS is a co-branded product offer covering the best of products from Schneider Electric & Sudhir.
BIOSCO design comes from Schneider Electric, France. All LT & MV electrical distribution products come from Schneider Electric, India. The Transformer, LT panels & Housing are products from Sudhir.
All these products have been designed to operate together to ensure electrical, mechanical and communication compatibility.
Synergy of Schneider-Sudhir are optimized and more efficient: better continuity of supply, enhanced safety for people and equipment, guaranteed upgradeability, effective monitoring and control.
Combined with your know-how and creativity, the Guiding System ensures optimum installations that are dependable, upgradeable and compliant with standards.