BEDRUNKA+HIRTH Main catalog industrial equipment Page 434
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Overview ESD ESD stands for electrostatic discharge. A large potential difference causes a spark or disruptive discharge, which produces high electric voltage pulses in electronic devices. Humans first feel an electrostatic charge from 3000 volts, and in most cases the discharge is harmless, with the moment of shock being the worst part. When is ESD dangerous? Sparking can already occur at 10000 volts and can cause explosions if flammable liquids or gases are being handled. Static electricity is produced, for example, when running on a carpeted floor, whereby a person can become charged to approx. 30000 volts in some cases. The effects of ESD are insidious, meaning that the damage is not immediately visible, and the causer often does not notice it. The consequences can become costly, especially if the assembly is installed in devices for sensitive applications. Sensitive components can be destroyed from just 40 volts. EPA offers protection against ESD! EPA = Electrostatic Protected Area A work area equipped with ESD protective measures where electrostatically sensitive components can be handled without damaging them. A comprehensive EPA protection area includes the following areas: Workstation Personal grounding Tools Markings Measurement technology Storage/containers Flooring Four golden rules for dealing with ESD 1. Always presume that all active components are ESD-sensitive. 2. Only touch electronic components in ESD protection areas (EPA) and then only when you are properly grounded. 3. Store and transport ESD-sensitive components in ESD protective containers. 4. Regularly check the ESD protection system. The ESD standard DIN EN 61340-5-1 applies to electronics production facilities. All products listed here comply with this standard. Observe the principle “No charge, no discharge”. Making as few movements as possible and using ESD-safe equipment reduces the risk of a static charge on people to a minimum. 434
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