{"id":4284,"date":"2024-11-15T04:03:07","date_gmt":"2024-11-14T21:03:07","guid":{"rendered":"http:\/\/www.tneutron.net\/blogs\/safeguard-against-voltage-touch\/"},"modified":"2024-11-12T08:30:49","modified_gmt":"2024-11-12T01:30:49","slug":"safeguard-against-voltage-touch","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/blogs\/safeguard-against-voltage-touch\/","title":{"rendered":"Safeguard Against Voltage Touch"},"content":{"rendered":"
\n

If a voltage object touched by the human body, it is generally an electric current flowing into the human body. But actually harmful to the body is not the voltage itself, but the electric current flowing into the human body, while the voltage is then a danger that as a result of contact with the voltage that causes the flow of electric current is large enough in the body.<\/p>\n

If not cause current to flow so that the voltage is not dangerous. Therefore, we often see birds perched with a delicious on SUTT 70 kV.<\/p>\n<\/div>\n

\u00a0<\/span><\/span> \"clip_image002\"<\/a><\/div>\n
<\/div>\n
Much research has been done related to the result of electric current flowing into the body. Based on the study reported by IEC Publication 479 Report suggests the following (as shown in Figure 4-169.)<\/span><\/span>
\n<\/span><\/span><\/div>\n
    \n
  • Area (1) The area where the current does not cause any reaction Area (2) The area where the current may already be felt, but usually does not lead to a result pathophsiologis<\/span><\/span><\/li>\n
  • Region (3) The area in which usually do not cause harm fibrillation (irregular heartbeat or stop)<\/span><\/span><\/li>\n
  • Area (4) The area in which fibrillation can occur with the possibility of up to 50%<\/span><\/span><\/li>\n
  • Area (5) The area in which fibrillation can occur with the possibility of more than 50%.<\/span><\/span><\/li>\n<\/ul>\n
    <\/div>\n
    If the voltage is moved to a body, with the feet on the ground, it will be an electric current flows in the body which depends on prisoners and detainees body contact on the second touch point. Although that is harmful to the body is current as a basis for establishing electrical installation requirements are more practical if it is declared as the touch voltage as a function of time. In the IEC Standard Publication 364 4-41, 1977 (Amendment 1) stated that the touch voltage as a function of time is allowed (Table 4-9).<\/p>\n

    Voltage Security Ways to Touch<\/strong>
    \nTouch with voltage can occur directly and indirectly. Security against direct touch is the security of the touch on the active part of the equipment or installation in a normal state voltage. While safeguards against indirect touch is security to touch on the “body” of equipment or installation into existing voltage at the time of interruption or short circuit to the “body” of it. The meaning of the body is conductive parts do not constitute part of the circuit. Security against indirect called also safeguards against touch voltages at the time of disruption.<\/p>\n

    Briefly ways to safeguard against touch voltages can be described as follows:
    \nSecurity against touch voltages both direct and indirect, include:<\/p><\/div>\n

      \n
    • Low voltage safety (PUIL Article 323) is below 50 V, for example, 42 V, 24 V, 12 V and so forth, so if it happens to touch either directly or indirectly harmless.<\/span><\/span><\/li>\n
    • Low voltage security can be obtained in the following ways:<\/span><\/span><\/li>\n<\/ul>\n
      a)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> With safety transformer, ie having separate secondary windings of the primary specially designed so as not to allow the brief relationship between the primary and secondary windings.<\/span><\/span><\/div>\n
      b)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Motor-generator sets<\/span><\/span><\/div>\n
      c)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Batteries and dry cell battery<\/span><\/span><\/div>\n
      <\/div>\n
      Safeguards against direct touch include:<\/span><\/span><\/b><\/div>\n
      1)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Security with insulation on active parts (PUIL, Article 310), for example, cable, porcelain, rubber insulated and so on.<\/span><\/span><\/div>\n
      2)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Securing the enclosure or bulkhead f (PUIL, Article 310 B and C), for example, switch boxes, circuit equipment for (PHB).<\/span><\/span><\/div>\n
      3)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Security with barrier (PUIL, Article 213), for example, a fenced so that people can not be approached, or put behind the grille.<\/span><\/span><\/div>\n
      4)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Security with placement outside the reach of the hand, for example, part of the voltage placed 2.5 m above the floor.<\/span><\/span><\/div>\n
      5)<\/span><\/span> \u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span> Additional security with Safety Switches Flow to the Land (SPAT, earth leakage circuit breaker).<\/span><\/span> This is just an additional security (extra) in addition to other safeguards, intended to secure against direct contact that might still happen.<\/span><\/span> This switch works based on the presence of leakage current to ground which is also called the residual current (residual current) arising from direct touch because of leakage current to ground as a result of direct contact is very small, then even this switch must be unbelievably sensitive, ie by 30 mA arusbocor already capable of causing his trip switch.<\/span><\/span><\/div>\n
      <\/div>\n
      Security against indirect touch, include:<\/span><\/span><\/b><\/div>\n
        \n
      • Security with automatic disconnection of supply, which requires security and safety devices such as fuses and safety switch.<\/span><\/span><\/li>\n
      • Securing the safety insulation (see PUIL, 322A.Ia article), that is by giving additional insulation in addition to the main isolation (double insulated), so that in the event of damage to the main insulation, weight equipment that may be touched hands with insulation materials, installing enclosures of insulating material, or the body can also own equipment from non-conductive material.<\/span><\/span><\/li>\n
      • Security with base isolation (see PUIL, Article 322A), which provides insulation in place or foot rests on the floor and other conductive objects associated with the land of reach so that the people affected tercegahlah touch dangerous voltage in the event of failure of the insulation.<\/span><\/span><\/li>\n
      • Security with conductive footwear relationship with the body or piece of equipment that is held in check by hand so that there is no potential difference between footwear and body \/ hand terpegang piece of equipment in the event of failure of the insulation.<\/span><\/span><\/li>\n
      • Securing the safety separator (electrical separation) (see PUIL article 329), which used a motor generator sets or transformers separator.<\/span><\/span> Transformer is a transformer winding separator<\/span><\/span><\/li>\n
      • secondary apart from the primary winding and the secondary circuit, where the equipment is connected, not diketanahkan so that in case of failure of the equipment insulation tercegahlah onset touch dangerous voltage.<\/span><\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        If a voltage object touched by the human body, it is generally an electric current flowing into the human body.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[12],"tags":[8483,8479,8482,8478,8480,8477,8476,8484,8481],"class_list":["post-4284","post","type-post","status-publish","format-standard","hentry","category-distribusi-tegangan-rendah","tag-touch-voltage-calculation","tag-touch-voltage-definition","tag-touch-voltage-formula","tag-touchpad-voltage","tag-voltage-touch","tag-voltage-touch-potential","tag-voltage-touch-sensor","tag-voltage-touch-test","tag-voltage-touch-tester"],"yoast_head":"\nSafeguard Against Voltage Touch - TN Blogs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tneutron.net\/blogs\/safeguard-against-voltage-touch\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Safeguard Against Voltage Touch - 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