Several problems should be paid attention to when using distribution transformer:
1, in the selection of distribution transformer, in addition to the performance of the full consideration, the capacity to choose appropriate, to fully consider the size of the load, ensure the load utilization rate; capacity is too large, in addition to the purchase price is high, one-time investment is large, in the operation process, the no-load loss is inherent. Capacity selection is too small, in addition to the power consumption can not meet the requirements, the load loss is often high.
Number 2, to determine the reasonable use, it is generally considered from the two aspects of safety and economy; a large number of a load or is two load but from the security perspective is needed, the load fluctuation and the interval of time is long, can be considered a small multiple of power supply; high reliability requirements should be considered in the standby transformer, of course there are various influence factors such as the site. When power and lighting share a transformer, which seriously affects the life of the bulb or the quality of the lighting, a special lighting transformer shall be set up.
(1) the foundation of the transformer is not firm or uneven (one angle is left vacant), or the bottom plate is too thin. (2) use the channel steel to support the transformer, it will increase the noise.
(1) the installation method is modified by the installation unit.
(2) shockproof rubber pad under the trolley of power transformer can solve part of the noise.
The impact of the installation environment
Reason: the operating environment affects the noise of transformer, the environment is disadvantageous, the transformer noise increases 3dB ~ 7dB.
Judgment method: the content comes from: China Electric Power Development Network
(1) the transformer room is large and spacious, and there is no other equipment, there is an echo.
(2) the transformer is too close to the wall, less than 1 meters. The transformer is placed on the corner and the wall reflects noise and variable pressure ha
The noise is superimposed so that the noise increases.
(3) the original use of oil changes, dry change will affect the noise of the transformer. The reason is that the crude oil change chamber
Relatively small, there is an oil leak chamber and an oil leak, the transformer is like on a speaker.