Stryker Berchtold CHROMOPHARE, Руководство по обслуживанию и запасным частям

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3
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3. ESD Procedure
3.1. Electrostatic Discharge
Static electricity is a stationary form of electrical charge. This charge is due to the transfer of electrons within
a body or from one body to another. The magnitude of the charge depends on the size, shape, composition
and electrical properties of the substance that make the bodies.
Once a body develops a static charge, it will look for a conductive surface to discharge. This is called
Electrostatic Discharge (ESD). This discharge is only felt when the charge is larger than 3500 volts, yet many
components are sensitive well below this level.
Potentially dangerous levels of ESD can generate from the following common manufacturing sources:
• Plastic (bags, containers, binders)
• Paper (procedures, DHRs, pick slips)
• CRT Monitors
• Clothing
Subassemblies and equipment that contain ESD sensitive devices (without adequate circuitry) are also ESD
sensitive.
Avoid sliding ESD sensitive components across other materials. Sliding materials together can create the
build up of an electrostatic charge.
3.2. Electrostatic Dissipative Wrist-Straps
Wrist-straps should be worn during the handling of ESD sensitive devices. The wrist-strap should contain an
internal 1Mohm resistor to protect the operator in the case of accidental high voltage being applied to the
workstation surface.