1. Source of static electricity: The static electricity sources that affect the circuit mainly include human body, plastic products and related equipment. Among them, the static power source from the use environment has the following items:
1) Objects and materials.
2) Floor, work table and chair.
3) Work clothes and packaging containers.
4) Painted or waxed surfaces, organic and fiberglass materials.
5) Cement floor, painted or waxed floor, plastic floor tile or floor leather.
6) Chemical fiber overalls, non-conductive work shoes, clean cotton overalls.
7) Plastic, box, box, bag, tray, foam pad.
2. Failure mode of electrostatic discharge: sudden failure and potential failure.
3, anti-static measures:
1) Training of static electricity knowledge and related technologies for personnel using static sensitive circuits.
2) Establish an anti-static work area, use static-discharge floor, anti-static workbench, anti-static grounding lead and anti-static device in the area, and control the relative humidity to 40 or above.
3) The damage caused by static electricity to electronic equipment may occur in some small details in peacetime, and attention should be paid to the details.
4) ESD damaged equipment should be marked and should not be confused with normal equipment.
5) ESD safety and control procedures: establish a complete ESD static management system to enhance the usual detection.
4, transportation and packaging
ESD sensitive equipment should always be stored in an antistatic bag or container during daily operation.
The above is the protection knowledge of electrostatics in LED display. In production and life, it is worthy of our high attention, so as to minimize the damage caused by static electricity.
We adopt the advanced technology imported from Europe, patented technology, specialized software to optimize the design for33kV cast resin Dry Type Transformer. The core is made of cold-rolled grain-oriented silicon steel sheet which cut in step-lap by GEORG Germany TBA core cutting lines and laminated by the method of fifth-order step-by-step stacking technology, enabling the no-load performance of the core to improve greatly. The epoxy resin from American HUNTSMAN is adopted for the windings which casted in the vacuum resin casting machine imported from HEDRICH, Germany. The winding material ensures good permeability, no bubbles occur, which leads to minimum partial discharge. The HV and LV winding mate with each other tightly, which ensures solid strength of structure and capability to withstand short circuit and vibration. Under normal service condition, the service life of dry type transformer is 30 years. No crack will form on the surface of transformer winding due to temperature variation as long as the transformer runs under normal service condition.
Earthing Transformer,33Kv Dry Type Transformer,33Kv Transformer,33Kv Cast-Resin Transformer
Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com