The danger of human body shock is related to the following factors:
(1) When the human body is exposed to electricity, the fatal factor is the current through the human body, not the voltage, but when the resistance is constant, the higher the voltage, the greater the current through the conductor. Therefore, the higher the voltage that the human body touches the charged body, the greater the risk. But whether it is high pressure or low voltage, electric shock is dangerous.
(2) The duration of current flow through the human body is another important factor affecting the degree of electric shock damage. The longer the body passes the current, the lower the body resistance, the greater the current that flows, and the more serious the consequences. On the other hand, the human heart contracts and expands once, with an interval of about 0.1 second in the middle, which is most sensitive to current. If the current passes through the heart at this instant, even if the current is small, (zero mA) will cause heart tremor; if the current is not passed at this moment, even if the current is large, it will not cause heart paralysis. It can be seen that if the current duration exceeds 0.1 second, it will inevitably coincide with the most sensitive gap of the heart, posing a great danger.
(3) The way the current passes through the human body is also directly related to the degree of electrical injury. The current passes through the head of the human body, causing people to immediately stun. If the current passes through the spinal cord, the human limb will paralyze. The current through the heart, the respiratory system and the central nervous system will cause nerve malfunction or cause the heart to stop beating, interrupting the blood circulation of the whole body and causing death. . Therefore, the current path from hand to foot is the most dangerous. Second, it is the hand-to-hand current path, again the foot-to-foot current path.
(4) The current frequency has a great influence on the degree of electric shock damage. The 50HZ power frequency AC is reasonable for designing electrical equipment, but the current of this frequency is also the most serious damage to human body electric shock.
(5) The health condition of the person, the dryness and humidity of the skin of the human body, etc. also have a certain influence on the degree of electric shock damage. Patients with heart disease, nervous system disease or tuberculosis have more severe electric shock damage than healthy people. In addition, the dryness of the skin is large, the current passing through is small, the skin's moisture resistance is small, the current passing through is large, and the hazard is also large.
AC Contactor switch mainly used for making or breaking circuit at a long distance, suitable for controlling starting\stopping\reversing of AC motor. AC Contactor of korlen conforms to the requirement of IEC60947-4-1& GB14048.4 standards.
Except AC Contactor, there are many different types of low voltage electric appliances, such as Thermal Relay,Manual Motor Startor ,led light, Circuit Breaker, etc.
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