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                               ELECTRICAL NOISES ARE GENERATED  
                                DUE TO | 
                               
                              
                                
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                                  Switching of electrical utilities like 
                                  Capacitors, MCCBs, ACBs, etc.   
                                 
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                                  The inductive loads like Motors, Elevators, 
                                  Compressors, Overhead Cranes and Presses. 
                               
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                                  Switching equipments like Inverters, UPSs, 
                                  SMPS, etc. generate electrical noises due to 
                                  switching of Thyristors, Relays, Transistors, 
                                  etc. 
                               
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                                  Welding systems pollute earthing systems, adds 
                                  notches and high frequency noises in the wave 
                                  form. 
                               
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                                  Lightening, precipitation of static charges 
                                  and electrical discharges in the atmosphere 
                                  are the natural cause of generation of various 
                                  electrical noises. 
                               
                             
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                                EFFECT | 
                               
                              
                                
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                                  Electrical noises 
                                  are observed to occur over a wideband of 
                                  frequency ranging from 1 KHz to 100 MHz  
                                  and above. Magnitude is observed to be as high 
                                  as 4000 to 6000 Volts in 3 phase supply 
                                  system. 
                                 
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                                    The high 
                                  frequency noise can interface with 
                                  digitalelectronic equipments causing 
                                  untraceable data  errors, change of 
                                  programme, loss of memory, erratic behavior, 
                                  etc.  
                               
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                                    The high voltage 
                                  spikes can cause the failure of Thyristors or 
                                  Transistor, Micro Processors and other 
                                  sensitive devices. 
                               
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                                  The radiated noise 
                                  can interface in operation of remote control 
                                  equipment like Cranes, Digital Controls or 
                                  Telecom Equipments. 
                               
                             
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                            Isolation Transformer isolates primary and 
                            secondary, or separates neutral-to-ground bond on 
                            the secondary side. It can be used to create 
                            separately derived source to combat current 
                            loops.The Ultra Isolation Transformers are available 
                            in different levels of noise attenuation 
                            capabilities, the most commonly used are 100 & 120 
                            dB. The coupling capacitance between primary and 
                            secondary is direct 1:1 relationship with dB levels.  |