Do you know the harm that get an electric shock really? The person that can you get an electric shoc

The harm that place getting an electric shock causes is main when body is contacted when human body now or be close to electrical body to cause accident getting an electric shock, electric current sheds classics human body, right the place getting an electric shock and organ of human body interior harm that causes different level.

Single-phase get an electric shock form loop, voltage 220V

Single-phase getting an electric shock is to point to human body in ground get angry other ground connection is carried, the some part of hand or body touchs the line of a look in three-phase line, below the circumstance that does not have any preventive measure, electric current can pass human body to flow into the earth from osculatory look line. For example: When pigheaded sky leaves, forget cut off the power, just both hands is built was in leave to be mixed into the line for nothing a line between two lines; Still have, when pigheaded bulb, the hand hits the look line share that comes up against lamp mouth, look line goes to the ground to form voltaic access through human body.

Human body is contacted with communication 380V directly

Two-phase gets an electric shock is to point to human body two place touch at the same time two front line, at this moment susceptive of human body place is communication 380V voltage, dangerous level is more than far single-phase get an electric shock, bring about burn or cause damage gently, die again.

High-pressured step gets an electric shock

When the photograph of a high pressure of trolly wire road the line is broken fall on the ground, electric current can be nodded from the be born of look line come loose like earth shedding, with look line be born then the dot is a center on the ground, formed a specific electrified area (radius is 8-10 rice) , further from dot of electrical wiring be born, area potential is lower. After the person enters electrified area, when the travel before step, as a result of around the potential of two feet seat differs, there was voltage between bipod around, two legs formed voltaic access, cause step to get an electric shock.

When human body gets an electric shock, shock current is the main reason that causes human body harm getting an electric shock, voltaic measurement is different, the harm that causes to human body is different also.

Faradic: Communicate 1 milliampere (man 1.1 milliampere, woman 0.7 milliampere) or when shedding 5 milliampere continuously, human body can feel electric current contacts place to have keenly feel of slight paralytic, thorn;

Cast off electric current: Do not communicate 16 milliampere more than (the woman is controlled to communicate 10.5 milliampere) or shed 50 milliampere continuously, won't cause harm to human body, can cast off by oneself;

Harm electric current: Cast off electric current more than, communication arrives in 16 milliampere when 50 milliampere, electric current can cause the harm of different level to human body, time getting an electric shock is longer, consequence is more serious also. When the electricity that carries human body harms electric current more than, cerebrum is met insensible, the heart may stop to beat, and can appear serious report is burnable.

Deadly electric current: When the alternating current that carries human body arrives at 100 milliampere, if pass human body 1 second, enough makes a person deadly, cause serious harm accident.

Install full voltage: The voltaic intensity of human body is passed when getting an electric shock, depend on the resistor of extra voltage and human body. The resistance of human body follows human body difference and differ, when position of moisture of skin of same human body is different, the block value of oneself also can change somewhat. Outside the oneself resistor that human body resistor removes a person, still should add on the resistor such as the dress beyond human body, shoe, pants, although human body resistor can amount to 5000 Ω commonly, but, the factor that affects human body resistor is very much, outside dividing skin thickness, skin moisture, much sweat, have loss, contain the metropolis such as conductivity dust to reduce human body resistance. Osculatory area is increased, osculatory pressure increases to also can reduce human body resistance. Contact voltage heighten, layer of cutin of meeting puncture skin, the airframe that increases human body electroanalysises, also can reduce human body resistance. In addition, human body resistor still is reduced along with the heighten of power source frequency, the size that sheds electric current of classics human body normally so is cannot calculate beforehand those who come out. Accordingly, often do not use safe electricity to determine safe condition, use safe voltage to undertake estimation however.

Clew explains: The experiment proves, the frequency of shock current is lower, bigger to the harm of person, the alternating current that frequency is 40-60 hertz is most dangerous to human body, as the heighten of frequency, the rate of danger getting an electric shock can fall subsequently. Since such, why doesn't frequency set high point? About this, suffer the effect of a lot of element such as the history, technology, commerce, national electrified wire netting is afraid said to also do not calculate.

Install full voltage to calculate: Usually, the resistor of human body can press 1500 Ω of 1000 ～ to consider, lowest can press 800 Ω plan. Be informed via experiment and analysis again, limiting current is the labour frequency that human body allows to pass about 50mA, reason this can be calculated according to Ohm's law, 0.05 × of U=IR ≈ 800 ＝ 40(V) , the frequency of the biggest project that is informed human body place to allow (the frequency of the alternating current source that uses on industry) voltage is 40V about. So, the safe voltage regulation of our country is 36V.

National level " safe voltage " (GB3805, 83) the order and degree that stipulates our country installs full voltage rating is 42V, 36V, 24V, 12V and 6V, answer to be chosen according to the element such as state of condition of work place, operator, use means, power supply means, circuitry. Use in particularly dangerous environment for example hold dynamoelectric tool to should use 42V extra-low voltage; What electrical shock uses in dangerous environment hold floodlight of floodlight standoff ministry to should use 36V or 24V extra-low voltage; Inside metallic container, use in the particularly dangerous environment such as particularly damp place hold floodlight to use 12V extra-low voltage; The place such as water dirty course of study should use 6V extra-low voltage.

Electric injury may cause an accident 2 times

Electric injury: Show electric current passes part of human body some or electric arc effect (circuit voltage not under 10-20 bend over, electric current is not less than 80~100mA, of electric equipment touch the meeting between the head to produce electric arc) and the harm of human body surface that cause, main show is burn or burnable.

2 accidents: Usually, although electric injury won't cause very serious harm directly, but the spirit when may sufferring report to hurt is nervous, bring about trip thereby, fall wait for an accident 2 times, cause serious harm secondhand, need notices to be on guard.

Electrical shock

Electrical shock: It is to point to electric current to cause in-house organ through human body interior, the injury that waits like heart, lung and central nervous. Every systole dilate has the person's heart the intermittence of 0.1 seconds, and inside this 0.1 seconds, the heart is the most sensitive to electric current, if electric current is in this is flashy pass a heart, although electric current is lesser, also can cause a heart to vibrate, create risk. Compare for, the harm that electrical shock causes than electric injury is greater.

1. disconnects power source getting an electric shock

Low pressure (1000V is the following) below the environment, if control switch to be near personnel getting an electric shock, rescue them personnel ought to disconnect immediately mains switch, the person that will get an electric shock again next removeds position getting an electric shock has first aid. Low pressure (1000V is the following) below the environment, if get an electric shock,buy of personnel place v/arc be on the throne leaves switch further, work in headroom for instance, rescue them at this moment personnel does not have method to put out power source in time, below the condition that allows in the condition, need to put on insulated shoes, wear the preventive measure such as electric insulation glove, in can method touchs the circumstance of power supply cord falls, come the line of a side of dump power supply, do not let power source reach the place that personnel getting an electric shock is in again namely. Be sure to keep in mind, pull the person that get an electric shock directly with the hand! Can stand on dry board, wear electric insulation glove, play the person that get an electric shock and the hand that power supply cord contacts. Low pressure (1000V is the following) below the environment, if do not pull the person that get an electric shock really, can be in the person that get an electric shock and office of position of ground surface contact, fill up the board of an enough and apart both, the person that will get an electric shock again next and power source are detached. Low pressure (1000V is the following) below the environment, if electrical wiring is built,go up in body of the person that get an electric shock, can wait for insulant body to carry the wire on body of the person that get an electric shock with dry club, bamboo pole, plastic products, rubber products. When high-pressured 1000V above gets an electric shock, can introduce line of chuck naked metal (steel, iron, copper, aluminium) make ground connection of circuit short circuit, force protector action, dump. The person that throw namely receives metallic thread one aspect of the matter first the ground, cast a thread of metal of other one aspect of the matter next, cast the clue that give not to come up against the person that get an electric shock or someone else, after the person that throw casts a line, the metallic line that should leave ground connection quickly 8 meters beyond or double foot and approach stands, prevent step voltage to injure a person. Back-to-back announcement cuts off the power about Electricity Department door, before cutting off the power, be sure to keep in mind not to stand by the person that get an electric shock.

2. emergency treatment getting an electric shock

Preparation works: After the person that get an electric shock breaks away from environment getting an electric shock, do not move its casually, answer to lie on one's back the person that get an electric shock, the dress of the person that rapid unlock gets an electric shock, chatelaine, make sure its breathe normally, scattered surround view personnel, make sure air is expedite, dial telephone of 120 emergency treatment at the same time.

Tighten urgent relieve a sick or injured person:

Check pulse

Condition of breath of the person that judgement gets an electric shock, heartbeat completes inside 10 seconds: The abdomen of the person that examine above all, bosom have without rise and fall movement, the buccal bazoo of the person that get an electric shock with auditive press close to then is in, whether does the person that listen have breathing reputation, finally is to feel whether the mouth and nostril have expiratory air stream; Ministry of forehead of the person that reoccupy skill is helped up, another hand feels cervical artery to have beat without pulse.

The person that get an electric shock loses consciousness, but have slight breath: On the spot of the person that let get an electric shock lies on his back lie low, want to let enrage unobstructed, the content unlock such as the chatelaine that should breathe dress of the person that get an electric shock and be a hindrance to at its, help its breathe, and be inside 5 seconds the person that call gets an electric shock or dab ministry of shoulder of the person that get an electric shock, whether is consciousness of the person that get an electric shock in order to judge lost. It is when mind of the person that get an electric shock is not clear,

Breathe artificially

The person that get an electric shock jumps purposely, but without breath: Hold the nostril of the close person that get an electric shock with a hand, make nostril lock; Another hand breaks the mouth of the person that get an electric shock; The mucous, food in eliminate oral cavity, false tooth sundry; If get an electric shock person mandibular joint lock, cannot break the mouth, can adopt a mouth to blow angry method to nose; If get an electric shock person tongue retraction, answer to pull the tongue, make its breath expedite.

Relieve a sick or injured person person suck greatly at a heat, the mouth of the clingy person that get an electric shock is big blow air, make its bosom expands, next relieve a sick or injured person person take a breath, the mouth that unlocks the person that get an electric shock is nose, the person that make get an electric shock is automatic and expiratory, have afore-mentioned operations repeatedly so, the time that blow air is 2 to 3 seconds, release time is 2 to 3 seconds, 5 seconds left and right sides circulates for, duplicate an operation, among cannot discontinuous, till come to of the person that get an electric shock till. Attention: To body the weak and children can blow air small only, lest alveolar burst.

The heart outside the bosom is pressed press cure

Faint, heartbeat stops heart sounds of the person that get an electric shock or pulse is short and irregular circumstance: The person that let get an electric shock lies on his back, loose dress and chatelaine, make head of the person that get an electric shock is admired later, next relieve a sick or injured person person need genuflect in waist of the person that get an electric shock two side or genuflect are in a side of the person that get an electric shock, relieve a sick or injured person person left hand palm is put in upper part of heart of the person that get an electric shock (sternal place) , middle finger aims his cervical sunken lower end, relieve a sick or injured person person right hand palm presses leftward palm to go up, forcibly perpendicular squash downward, press outside adult bosom press frequency to be 100 times minutely. It is commonly when real bring a patient out of danger, every are pressed after be being pressed 30 times, carry out artificial breath twice.

The content that share is basic and such, if have misgivings, forgive please!