Pragati Electrocom Private Limited

All transformers provide isolation. They are generally constructed with a primary and secondary winding closely wrapped about the same magnetic core. Transformers have capacitance from a winding to any nearby Conductor, such as other winding, the wire and the chassis. Thus they can couple high frequency signals and noise to these near by conductors. This capacitive coupling mechanism can carry high frequency noise from the input primary to the output secondary winding or vice versa. Isolation transformers minimize this capacitive coupling. Capacitive Coupling is minimized by specialized construction and use of shields. Shields usually increase the capacitance coupling between primary and secondary if the shield is not connected to the appropriate place. The technique lies in connecting the shields at a place where noise is diverted to harmless place. Isolation levels upto 120 dB can be provided.

The performance of any electrical/electronic equipment is optimum at its rated voltage. Under voltage reduces efficiency or damage valuable appliances incorporating motor/compressor system (e.g. Refrigerator, Air Conditioner & Computerized Sewing Machine, whereas over voltage may damage electronic equipment/appliances like television computers, CNC Machines, Telecommunications centers, Medical Equipment. LCU offers complete solution for Power problems through Automatic Voltage Correction, Power Protection & Surge.

Telecommunication equipments need to work continuously without any interruption. So it requires continuous supply for continuous operation. This is provided by Power Plant. Power plant works on AC supply. When ever AC mains supply fails the equipment works on Battery. The battery have often time limit to provide the back up. DG is the other source to provide power back up to power plant and other equipments. Power Automation System is the automatic solution for this type of situation to monitor and operate the Generator set.

Telecom Shelter is an innovative solution that utilizes FRP to offer better thermal resistance for solar gain and now almost the entire Telecom industry has accepted the versatility of Telecom Shelter and thousands of Green units have deployed at Telecom sites. When a substance changes from solid to liquid or liquid to solid (i.e. Changes Phase), a large amount of energy in the form of latent heat is required. This high latent heat energy occurs at a relatively constant temperature

INTRODUCTION The power plant ensures the uninterrupted supply of DC current to DC equipment when batteries are connected to it. The rectifier modules are designed to convert the sinusoidal alternating current from the primary mains supply into direct current and to deliver it to the equipment and, in parallel, to the batteries. Batteries connected to the power plant stores energy in order to be able to deliver it back to the equipment in case of primary mains supply become unavailable.

System Data Logger shall incorporate all the features required for precision strain measurement under variety of loading conditions while maintaining flexibility and ease of use. Strain gauge, strain gauge based transducers, thermocouples, LVDTs, potentiometers, accelerometers, piezoelectric sensors shall be intermixed by the system and easily configured for each test requirement. Data logger shall simultaneous scan and record of all channels (above 10000 samples/second for each channel). Data shall be exportable in ASCII format to other user specific programs for analysis. Assignment of all input channels shall be sensors specific. System data logger shall have Window based software with facility for on-line monitoring of selected channels in fully reduced and corrected numeric or graphic formats. Off-line presentation of all stored data in numeric or graphic format

Power Distribution Frame is a -48V / 320A system earthed to positive used to supply telecommunication equipment with direct current. The system is intended for use in applications where a power plant with low ohmic distribution supplies power to transient sensitive equipments, such as electronic telecom equipments. It limits the current during short circuit at any of the distributed outputs. If a short circuit occurs at any of the output, the voltage at all other outputs will remain unchanged i.e. within the specified limit.

All the receivers and emitters of radio signals are very sensitive to surge voltages since they are highly electronic equipments. A typical weak point of these devices is the input of the coax cable, which may become the conductor for the surge voltage. Both radio and TV antennas are very exposed to receive the effects of surge voltages from atmospheric origin since they are located in the highest parts of buildings or structures. The surge voltages can be conducted by a direct strike of lightning to the antenna or the electro-magnetic field when lightning strikes in the proximities can induce them.

Technical Specification Fabrication of Tower Capacity 20000 MT. Galvanization plant capacity 25000 MT. Types: Angular Height 6m to 120 m with accessories such as lighting arrestor aviation lamp cable wire ladder etc. Applications: M/W, GSM, CDMA etc Tubular with welded rods (masts) Height: - 3m to 45m Base: - 150mm to 1200mm Applications: WA, HF.VHF, UHF, Turnkey etc Hybrid Tubes with angular bracings Height: - 3m to 100 m Base: - 1000mm to 12000 mm Applications: M/W, GSM, CDMA, WAN, HF. VHF, UHF, Turnkey etc.

Plug in surge arrestors for protecting communication network using line systems, have been designed using insulation pierced connections with built in-fail safe- overload protection and surges up to 10 ka (average) at 8/20 microseconds. the device has been designed with four-stage protection extended with the combination of gd tube, ptc, movs and surge suppressor diodes. The devices are capable of operating in < 1 n sec. With operating temperature range of 25 c to +80c.