A Bond Strands Private Limited Perungudi, Chennai, Tamil Nadu

A bond Strands is in the field of manufacture of unitized package substations. The unitized package substation is a state-of-the-art system which simplifies conventional substation design. Though, the concept is new in India, use of such package substations has been an accepted practice in distribution networks in Europe for several years.

A bond Strands is in the field of manufacture of unitized package substations. The unitized package substation is a state-of-the-art system which simplifies conventional substation design. Though, the concept is new in India, use of such package substations has been an accepted practice in distribution networks in Europe for several years.Custom-Built designs such as required for constant mobility involving frequent shifting from place to place like in off-shore drilling area etc. can be offered. This offers a high flexibility of providing power supply points without much difficulty.A high degree of safety and operational reliability are achieved by carefully selecting the associated HT & LT switchgear along with the dry type resin cast transformer provided with suitable thermistors and controllers for protecting the transformers from overloading.

A tap changer is a connection point selection mechanism device along a power transformer winding that allows a variable number of turns to be selected in discrete steps. A transformer with a variable turns ratio is produced, enabling stepped voltage regulation of the output. The tap selection may be made via an automatic or manual tap changer mechanism.

A Bond Strands is engaged in the field of design and manufacture of Medium voltage ring main units (RMU)-12kV and 24kV. Ring Main units with Tee-Off fuse switch units, are the compact distribution panels designed to cover the switching duties which is a vital part of any distribution network. The compactness of design make these RMUs highly suitable for compact stations such as in rural supply systems. The panel is also used as part of distribution panels in ordinary distribution stations of industry or electricity boards. The metal enclosure of the panel ensures IP4X protection class as a standard to prevent accidental contact with live parts. However, for special applications, better protection class also can be supplied, such as for Outdoor applications, installations in mines etc. .     Salient Features of RMU • Sheet Metal enclosed & custom built• Three pole breaking• Air as insulation medium• Quick make, quick break manual operation• Possibility of easy renewal of fuse• Mechanical interlock• Suitable for indoor or outdoor installation• Easy to extend at site• Trip-all phases for fuse tripping ORDERING INFORMATION-RMU:  1. Type of RMU -No. of switch /fuse feeders2. Indoor/Outdoor application3. Provision of earth switch4. Finish (unless specified our standard shade is light gray)5. Optional extras like fuses, auxiliary contacts , shunt release etc.6. Mimic Diagram(optional)7. Special requirements like metering/protection equipment.8 Whether remote operation (Motor operation) is required.

In our quest for continuous improvement and expansion, we are proud to introduce a range of On Load Tap Changers to the market . A tap changer is a connection point selection mechanism device along a power transformer winding that allows a variable number of turns to be selected in discrete steps. A transformer with a variable turns ratio is produced, enabling stepped voltage regulation of the output. The tap selection may be made via an automatic or manual tap changer mechanism. We have the voltage rating from 11kV to 132kV. The design is of high technical standard combining dependability, reliability and marketability. The salient features of A Bond Strands OLTC's are • High operating reliability• Easy maintenance and robust construction• Simple Drive Mechanism • Economy in designOur externally mounted on load tap changers combine indigenous modular design with modern manufacturing methods to give a very versatile product to the market.We have a unique design of high speed operation for coarse – fine / reverser selector, which will meet all our customer's needs. This has enabled us to operate within a simple design and reduce the number of components used.Our components are robust and not brittle in nature. Therefore no transit damage due to internal transit handling and hazardous road conditions will occur. We have only 200 components to cater to our entire range of five models. 

A.Bond Strands manufactures a quality range of medium voltage motor control centres and direct online starters(DOL) to control motors. Since its launch in 1990, our MCCS are rapidly gaining customer confidence and respect wherever they have been installed. Our design combines flexibility, safety and ease for maintenance inherent in our proven layouts and components. This with our engineering systems expertise enables specialised needs of most industries to be completely satisfied.Salient Features of Motor Control Centers:• Compact, requires less floor area.• Simple and easy to install even on mobile machines.• Maximum personal safety.• Easy accessibility for maintenance.• Interchangeability of equipments of 3.3kV/6.6 kV ratings.• Custom built, to suit type of machines on which the MCC is located.• Vacuum contactor/ Air break contactor of reputed make as per customer's requirement. viz BHEL, Jyoti, etc. 

A. Bond Strands now can offer the above version with the many Govt. utilities approving application of load break switches of 33kV rating in place of same rated Circuit breakers to Industrial /huge civil layouts. This new design will continue retaining its proven and highly reliable tubular arc quenching device. 

We manufacture HT OnOff Load Break Switches (Isolators) up to 36kV in collaboration with EMO , Yugoslavia who are pioneers in this field. Load break switches are extensively used in power plants and distribution networks. These have been tested for impulse and short time rating at Central Power Research Institute, Bangalore, the recognized independent testing authority in India.

We are one of the reputed OEM in the country and abroad, for our type of 3.3 kV to 33 kV Isolators and 12 kV to 24 kV Load, Break Switches. These equipments are manufactured under technical collaboration from EMO, Yugoslavia, (Original design being from Sprecher & Schuh Switzerland), who are pioneers in this field. Our Load break switches are extensively used in power plants and distribution networks and are regarded as highly reliable. The salient feature of ABS Load Break Switch is its ability to permit load connections even under a short circuit condition without danger to the operating personnel. It complies with IEC, VDE, & IS standards. A high speed(snap action) make and break ensures a fast switching action and the very special design of arc chutes having excellent extinguishing properties for both high and low currents, suitability of mounting in horizontal or vertical plane etc. prove the versatility of these switches. 

Isolators and Load Break Switches- 3.3 kV- 33 kV isolators, 12 kV and 36 kV Load Break Switches (manufactured under technical collaboration from EMO, Yugoslavia, Original design from Sprecher & Schuh Switzerland). Unitized Package sub-stations. High Voltage Motor Control Centers and Direct Online Starters, High Voltage Ring Main Units are our key products..

A Bond Strands has been a pioneer in the manufacture of glass fibre filament wound products and pipes for more than two decades. Filament winding is a precision winding method with which almost any form and dimension can be made from resin impregnated filaments of glass fibre(Originated from the rocket technology and development of the space program , this method finds entry in increasing measure in many fields of engineering and technology).With the help of Filament-Winding -Method, we get a material which possesses the specific gravity of magnesium with the strength of steel and corrosion resistance of plastics at the same time very good electrical and dielectric properties. 

A Bond - Strands Pvt. Ltd., is in the field of manufacture of various cast epoxy resin components for more than two decades. Our facility has a full component of equipment for casting under high vacuum and using pressure gellation technique to produce void free epoxy castings of high quality to suit very critical high voltage applications. The standard items we manufacture are:• Insulators • Bushings • Seal off Bushings • Roof Bushings • Terminal Boards • Insulating Supports • Wall through FRP Bushings

A Bond - Strands Pvt. Ltd., is in the field of manufacture of various cast epoxy resin components for more than two decades. Our facility has a full component of equipment for casting under high vacuum and using pressure gellation technique to produce void free epoxy castings of high quality to suit very critical high voltage applications. Light weight and less bulky • Leak proof Encapsulation of metal conductors • Ideal substitute for porcelain in indoor applications • Adequate electrical clearances & creepage distance provided for. • Conductor of aluminum brass copper silver plated wherever necessary.

This capacitor switch, depending on the load pattern, will close or open automatically and connect or disconnect the capacitor bank to the lines. The capacitor switch provides not only reactive power compensation at overload current, but also prevents over-voltage problem at the receiving end during light load conditions by switching "on" and "off" the capacitor bank in the circuit respectively.   Features of Capacitor Switch:  Automatic switching -on of the capacitor bank whenever the load current exceeds a re-set value. The setting of load current is adjustable upto 150 amps, continuously. An on time delay of 5 minutes is provided each time the capacitor is required to be connected. The capacitor bank is automatically disconnected if the line current is reduced below a specified level. Automatic switching off the capacitor bank whenever the control voltage is beyond the minimum and maximum limits. i.e. 240 volts -15 % to 10%. In the event of line current exceeding a certain specified limit, the CT mounted on Y phase operates through the control unit and closing command is given to the closing solenoid which closes the interrupter, thereby connecting the capacitor bank in the circuit and thus improving the power factor. When line current is reduced, to a specified value control, unit gives a tripping command to the trip coil thereby disconnecting the capacitor bank. The power to the closing solenoid and tripping coil is also taken from the control transformer secondary.