In the actual application of the frequency converter, most of the domestic customers except for a few dedicated computer rooms, in order to reduce costs, the inverter is directly installed in the industrial site. The work site generally has problems of large dust, high temperature and high humidity, as well as metal dust and corrosive gases in the aluminum industry. Therefore, it is necessary to make corresponding countermeasures according to the situation on site.
1) The frequency converter should be installed inside the control cabinet.
2) The inverter should be installed in the middle of the control cabinet; the inverter should be installed vertically, and the upper and lower sides should be protected from large components that may block the exhaust and air.
3) The minimum distance between the upper and lower edges of the inverter from the top, bottom, or partition of the control cabinet, or large components that must be installed, should be greater than 300 mm .
4) If the special user needs to remove the keyboard during use, the keyboard hole of the inverter panel must be tightly sealed with tape or replaced with a dummy panel to prevent dust from entering the inverter.
5) In the dusty place, especially when using the inverter in the place of multi-metal dust and floc, the overall requirements of the control cabinet are sealed. The air inlet and outlet are specially designed for ventilation; the top of the control cabinet should have a protective net and a protective roof. Cover the air outlet; the bottom of the control cabinet should have a bottom plate and air inlet, inlet holes, and install a dust filter.
6) Most of the printed circuit boards and metal structural parts inside the inverter manufacturers have not been specially treated for moisture and mildew. If the inverter is in a harsh working environment for a long time, the metal structural parts are prone to rust. Conductive copper at a high temperature operating conditions, the process will be more intensified corrosion, for computer control panel and the driving power board fine copper wire, the corrosion damage. Therefore, for applications where it is used in humid and corrosive gases, basic requirements must be placed on the internal design of the frequency converter used. For example, printed circuit boards must be treated with three anti-paints, and structural parts must be treated with nickel-chromium plating. Process. In addition, other active, effective and reasonable measures against moisture and corrosion are needed.
Inverter use environment:
1 , ambient temperature: R.T+5 °C - +35 °C
2 , relative humidity: ≤ 85% RH
3 , ambient air quality requirements: do not contain high concentrations of dust and flammable, explosive gases or dust, accessories have no strong electromagnetic radiation source.
4. Precautions: This equipment cannot be tested or stored in articles containing flammable or explosive materials that may generate volatile or corrosive gases.Adopting KN95 grade anti-particulate matter filtering technology and antibacterial environmental protection fabnc, effectively filtering and protecting from PM2.5 air particulate matter and bacteria. without breathing valve.
Adopting KN95 grade anti-particulate matter filtering technology and antibacterial environmental protection fabnc, effectively filtering and protecting from PM2.5 air particulate matter and bacteria. without breathing valve.
(Details
NIOSH Approved: KN95
FDA Cleared
Helps protect against certain airborne biological particles
Fluid resistant and disposable
Features include:
NIOSH approved KN95
Meets CDC guidelines for Mycobacterium tuberculosis exposure control
99% BFE (Bacterial Filtration Efficiency)
Fluid resistant
Collapse resistant cup shape design
Braided headbands, cushioning nose foam, and light weight construction for comfortable wear)
N95 Mask,Surgical Mask,Earloop Face Mask,Disposable Protective Mask
Guangzhou HangDeng Tech Co. Ltd , https://www.hangdengtech.com