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Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

SMD aluminum electrolytic capacitor

Spot Remarks 2017+

The temporary grounding wire is an indispensable safety tool for electrical work. It is easy to carry and can be used flexibly in the field, so it is also called a portable grounding wire. Hanging the grounding wire is a safety barrier for the maintenance personnel to prevent sudden calls from harming the human body. However, in actual work, due to the frequent use of the grounding wire and the seemingly simple operation, it is easy to cause paralysis, and its importance is often overlooked. Incorrect use often occurs, which reduces or even sometimes loses the safety of the grounding wire. Protection must be given enough attention.

Hanging the grounding wire is an important electrical safety technical measure. The operation process should be serious, conscientious, and meet the technical requirements. Don't be careless. Hanging the grounding wire is a safety precaution used after a power outage. If the grounding wire is not used or used incorrectly, the probability of accidents will increase. Therefore, it is necessary to correctly use the grounding wire, regulate the behavior of hanging and dismantling the grounding wire, and consciously cultivate a rigorous safety work style to improve its own safety quality, in order to reject the danger and hidden dangers in a thousand miles, in order to avoid electrical accidents caused by the grounding wire. .

In actual work, the following matters should be noted when using the grounding wire.

(1) The ground wire must be checked before work. Whether the soft copper wire is broken, whether there is looseness at the screw connection, whether the elastic force of the wire hook is normal, if it does not meet the requirements, it should be replaced or repaired before use.

(2) Before the grounding wire is hung, the power must be checked first. The ground wire that is not inspected is the common habit of violation of the rules in the grassroots. The purpose of the power inspection is to confirm whether the site has been powered off, and it can eliminate the wrong power and no power failure. Human error, prevent the ground wire from being charged.

(3) Hang the grounding wire at both ends of the working section, or the branch line (including the induction power, and the self-supplied power that may be reversed). In actual work, the possibility of users reversing power and inductive power is often ignored, and there are many examples of the damage.

(4) When grounding piles, choose a strong, organic, moist, solid surface layer to avoid excessively loose, hard weathering, backfill and dry ground surface, in order to reduce the soil resistance of the ground loop. And contact resistance, can quickly clear the accidental high current and ensure the quality of the grounding.

(5) Do not hang the grounding wire on the cable or metal pipe of the line. The grounding resistance is unstable, often too large, does not meet the technical requirements, and may also cause the metal tube to be charged, causing harm to others.

(6) Take care of the ground wire. The grounding wire shall not be twisted during use. When not in use, the soft copper wire shall be well-disc. After the grounding wire is removed, it shall not be dropped from the air or scattered anywhere. It shall be transmitted by rope, pay attention to the cleaning work of the grounding wire, and prevent mud. Sand and debris enter the pores of the grounding device, which affects the parts that are normally used.

(7) The new staff must pass the training, study and use of the grounding line before they can perform the grounding line operation or use.

(8) Select the ground wire of the corresponding specification according to different voltage levels. This is also a place where habitual violations are prone to occur. The wire diameter of the ground wire must match the voltage level of the electrical equipment to pass the accident.

(9) It is not allowed to clamp the grounding wire to the painted metal structure on the surface.

Shelf or metal plate. This is a common violation in the electrical grounding of primary equipment. Although the metal is connected to the grounding system, the surface of the paint is an insulator, and the thickness of the paint is up to 10 kV/mm, which makes the ground loop unreachable and loses its protective effect.

(10) It is strictly forbidden to use other metal wires instead of ground wires. Other metal wires do not have the ability to pass large currents through accidents, and the contact is not strong. The fault current will quickly melt the metal wires and disconnect the ground loop, endangering the lives of the workers.

(11) On-site work shall not hang the grounding wire or change the location of the grounding wire without authorization. The number of grounding wires and the mounting points are carefully considered before work. If the grounding points are less hanged or changed, the on-site protection will be reduced and people will be in a dangerous working state.

(12) The grounding wire has a double-edged nature. It has a safety function. If it is used improperly, it will also have a destructive effect. Therefore, the grounding wire should be removed in time. With a grounding wire switch, it can damage electrical equipment and damage the stability of the power grid, which can lead to serious electrical accidents.

(13) The grounding wire should be stored in a dry room. It must be fixed and maintained, and numbered, and the records should be checked regularly. Should pay attention to check the quality of the grounding wire, observe the appearance of corrosion, wear, excessive oxidation, aging and other phenomena, so as not to affect the use of the grounding wire.