AHNAM is the world's leading supplier of high voltage induction machines used in a wide range of application in virtually every industry including oil, gas & petrochemicals, power generation, marine, pulp & paper, cement, mining, metals and water treatment. AHNAM's high voltage machines have earned an excellent reputation for performance and reliability. Cutting-edge technologies backed by a century of experience A modular concept AHNAM offer a comprehensive range of high voltage induction motors ranging up to 15kV and 18 MW, 50 Hz and 60 Hz and complying with widely-used standards including European and NEMA specifications. As part of the Groups focused factory philosophy, AHNAM India manufactures High Voltage (HV) Motors ranging from 200 kw to 3000 kw at its state-of-the-art manufacturing facility in Vadodara. These can be supplied as CACA / CACW / SPDP motors, based on your application and requirement. AHNAM's HV motors are built around modular platform. The simplicity of this concept allows them to be precisely engineered according to the specific customer requirements and applications. Superior design and manufacture are important factors in the superlative performance of AHNAM products. The high efficiency of these motors, together with a range of advances ventilation technologies, results in considerable energy savings throughout the life of the motors. The built-in advantages AHNAM has been developing and manufacturing electrical equipment for more than 100 years. This experience and our track record of building close partnerships with our customers offer you a genuine competitive advantage. By continuously developing and incorporating the most advanced designs and manufacturing technologies, we optimize your operating efficiency and maximize overall reliability.
A motor of all applications... Providing efficient motors for varying applications required design and manufacturing flexibility and high quality components. The modular concept ensures that your requirements determine the configuration of the motor. Modular Design Using a modular design-and-build principle, AHNAM's field-proven motors are manufactured using series of "building blocks" with a complete range of applications including compressors, pumps, fans, blowers, conveyors, mills, crushers, refiners and ship thrusters. AHNAM High Voltage Machines conform to IEC, BS, EN, VDE, DIN, IS and other international standards.
Performance and reliability The Rotor The key to long life for the rotor lies in ensuring very low vibration levels. This is achieved through robust construction and careful balancing of each completed unit. Rotor hasft material is selected according to the application. The spider beam welds and subsequent stress relieving process is based on rigorous norms and subject to stringent inspection. Squirrel cages are made from cooper, copper alloy or alluminium, based on the application needs. Swaged rotor bars provide additional stiffness enabling the motors to withstands long periods of heavy use. The Stator The stator core welded and machined to form a compact unit. Radial air ducts ensure uniform and efficient cooling. The stator core forms a solid block that retains its rigidity throughout the life of the motor. The complete stator is vacuum pressure impregnated. The frame The Bearings The bearings are designed for reliable and continuous operation with ease of maintenance. Bearings are selected based on the power, speed and application of the motor. Anti-friction bearings with a predicted service life of over 100,000 hours can be supplied. AHNAM also offer spherically-seated, self aligning sleeve bearings. For greater radial load capacity cylindrical roller bearrings can be used at the drive end with a dep groove ball-bearing at the non-drive end Side thus preventing circulation of shaft current due to harmonics. The compact, rigid and welded frame construction is designed to reduce overall weight, provide high lateral and torsional stability as well as ensure low vibration level in all operating conditions and acroos the speed range. East to connect terminal boxes The terminal box is designed to facilitate cable connection and minimize installation time. The box can be mounted on either side of the motor and is provided with a pressure relief device as an added safety pressure. The motors can also be provided with Phase Segregated Terminal Box (PSTB) as per requirements.
The cooling System Efficient cooling has to be achieved in all industrial ambient conditions. Therefore AHNAM motors offer a range of alternative cooling systems. Open ventilated motors can be weather protected. Totally enclosed motors can be fitted with built-incoolers, air to air or air-to-water cooling. Micadur -Compact Industry (MCI) Insulation system AC Machines Voltages up to 15 kv, Temperature Class 'F' (155 ºC) Uniform, efficient internal cooling is assured on large 2-pole motors on all motors having 4 or more poles by rotor air ducts and radial air ducts in the stator. In smaller 2-pole motor this is achieved by axial cooling holes in the rotor together with stator pre-slots and surface cooling of the cores. The Micadur -Compact Industry (MCI) insulation system is based on the global Vacuum Pressure Impregnation (VPI) insulation method. The VPI method itself has successfully used in all types of applications, and has achieved worldwide recognition for excellence. The MCI insulation system is applied to the entire range of form-wound low and high voltage AC machines produced in AHNAM factories. Key Features Excellent reliability: Years of dependable operational experience in a wide variety of applications has proved the excellent reliability of the system. Proven system: Tens of thousands of machines with the MCI system have been used successfully by customers all over the world through the years. Outstanding performance: The didicated mica insulation combined with the global VPI process applying special epoxy resin ensures long-life performance. Properties Accurate design and controlled manufacturing processes ensure that every stator winding with the MCI technique meets all relevant international standards. Inspections and tests are conducted during the coil manufacturing and winding assembly to ensure a high quality for the final product.
Impregnation process The VPI curing of the completely wound and connected stator winding with the specially formulated epoxy resin ensure sealed and homogeneous insulation system, resulting in low dielectric strength, excellent heat ransfer and the elimination of hazardous internal partial charges. Putting the customer first Continous R&D AHNAM has constantly maintained a leading position in developing insulation systems for rotaring machines. Insulation R&D works carried out in our well-equipped insulation laboratories, which in addition to actual insulation development are active in international co-operation and standardization. Understand... Develop... Deliver.. and Support Quality Products Quality and performance testing of each motor begins during the manufacturing process and continues to the final assembly. Documented quality test results, upon completion, are provided to the customer. Painting Painting techniques are varied to suit individual applications and environments. Staying ahead Our R&D Programme ensures that our motors incorporate the latest technology and advanced materials to provide improved performance and reliability. We endeavor to quickly introduce each improvement resulting from innovation, new materials or new manufacturing methods so that the benefit is passed to our customers as soon as possible. The close proximity of our research, design and manufacturing facilities enable us to do this very effectively. AHNAM is committed to maintaining this technological edge. Organized for support The combination of AHNAM's experience in supplying high voltage induction motors, the breadth of the product range and AHNAM's advanced information systems allow us to find the optimal solution every time; and to find it quickly. AHNAM supports customers at every stage from a rapid proposal service, through order tracing to testing, after sales service and the provision of spare parts. Service With its in-depth knowledge of rotating electrical machines worldwide experience, in-house R&D and highly skilled engineers AHNAM is your ideal partner for all your service needs. AHNAM offers you a comprehensive range of service: Dynamic balancing Failure Analysis Diagnostic Testing Residual Life Analysis Repair Sire Service No matter where you are based, AHNAM will focus on your requirements from the first contact, through manufacturing to delivery and whenever you need support. We aim to create long-term working relationships that are mutually beneficial. Through these relationships we strive to make our customers more efficient in an increasingly competitive world.