widely acceptable safety to prevent microshock is 10 milli ampere an electric current of sufficient magnitude can cause local voltages in the sensory is foreign with a live wire available electrical ground terminals partially in the mole second one touching a live wire with another wire at a different voltage voltage a little bit different wires is severity of the shock depends on path of current through the body the amount of current flowing through the body duration of shock current through the body and the current flowing or mechanical building stretches may become live accidentally in design great care is taken such such that the person is not exposed to live wire choosing proper insulation distance methods for accident prevention the protective methods to avoid accidents are earthing or grounding the protection against earthing problem is hospital grade receptacles and plugs normally marked as green dot provision of protection by using tripping of circuit breakers next is double insulation the equipment case may be made of suitable plastic or wherever conductive parts assist all to ensure our fault resistance is high as possible double insulation is generally used for handled power tools okay power tools like a handling on the double insulation you see in under there should be sufficient safeguard by making it waterproof also next is protection by low voltage the operation of equipment from batteries is safer however it is limited to equipment such as flashlight and races machines like in case of fault the body of the operator is a conductive path to ground most of the current entering to the equipment through the live wire is retained through the neutral wire and a part of current through the body of the operator if the difference exceeds say 5 milliampere the supply power supply is interrupted by the circuit breaker very rapidly such that the operator is saved from large current flow or harmless effect of time duration power supply interrupt power source at the top on a leakage current so leakage current due to capacitance develop because of the presence of capacities between any two conductors separated in space the resistive component of leakage current arises because no substance is a perfect insulator and some small amount of current will always flow through it the leakage current they are divided according to the current path in the following types enclosure leakage current earth leakage current patient leakage first one enclosure leakage current enclosure leakage current is the current which flows in normal condition from the enclosure or part of the enclosure is which flows in normal condition to earth leakage current patient leakage current is the current which flows through the patient from or to the applied part of the patient circuit grounding system and angle e leakage current avogadro non-dakila nest is safety codes for electromedical agreements the problem of ensuring a safe environment for the patients as well as for the operators has been engaging the attention of all consent in several countries at the national and international level the international electro technical commission has brought out a document iec 601 to provide a universal standard for the manufacture of electromedical equipment as well as a reference manual on good safety practice iec comprises over 40 countries biomedical instruments safe to be can maintain universal standards to cover general and safety requirements of electromedical equipment to the standard issued in eight parts cover the following aspects second one protection from electrical hazards protection from mechanical hazards rotation from undecided and harmful radiations protection from explosion protection from excessive heat fire etcetera construction of equipment behavior and reliability three parts recovery industry six zero seven on the rhino standard issues so these are some important standards so for radio frequency diathermy apparatus the standard is is7583 for ecg it is is 8048 cardiac d5 uh defibrillator it is is 9286 x-ray equipment it is is 7622-0 for electromyograph it is triple eight five so ethereum safety code for electromechanical electromedical acumens so here is sessional normal discussion either the patient.thank you All
Post a Comment