Voltage fluctuations and flicker

Voltage fluctuations and flicker Voltage fluctuation and flicker are the percentage of the difference between the maximum and minimum values ​​of the voltage relative to the rated voltage when the voltage amplitude changes regularly within a certain range, or the voltage amplitude does not exceed 0.9 pu to 1.1 pu (standard value). A series of random changes. This voltage change is called flicker to express the visual effects of voltage fluctuations on the lamp. Therefore, the flicker is a measure of the degree of susceptibility to lamp flashes caused by voltage fluctuations at different frequencies and the degree of stimuli causing flicker. The voltage fluctuation value is a subjective feeling of the human eye to the light flash.

The flicker limit caused by the user's load is based on the size of the user's load, the ratio of the protocol's power consumption to the power supply capacity and the system's voltage level. Percentage of the allowable voltage fluctuation of the public power supply point of the power system caused by the impact load. Divided into three levels for different specifications and restrictions.

(1) 10kV and below is 2.5

(2) 35~110kV is 2.0

(3) 220kV and above is 1.6

GB12326-2000 "Voltage Allowable Fluctuation and Flicker" specifies the flicker limit values ​​for each level of voltage. It applies to the rapid change of the voltage of the common connection point caused by the fluctuating load and may cause people to feel the light flashing. Occasions.

Peanut Dryer

Introduction of Commercial Peanut Roaster Machine:
The machine is a horizontal drum roasting machine that uses direct fire for materials. It is composed of a horizontal drum boiler body, a pan support frame, a frying pan arch, a power transmission part, and a charging and discharging mechanism. The roller pot body is mounted on the support frame of the pot body through the bearing, and the roller pot body can rotate around the roller shaft. Under the direct fire action, the materials contained in the roller pot body are evenly baked, and the roller pot body is also heated evenly. The wok burst accident occurred. The upper part of the arch body adopts a detachable vault for easy maintenance and repair.
Use of Peanut Drying Equipment
The dryer machine is suitable for all roasted seeds and nuts, raw material processing of health products, processing of nutritious raw materials, processing of raw materials for Chinese herbal medicine shops, condiments and spices processing, dried coffee beans, chestnuts, peanuts, melon seeds, walnuts, sesame seeds, beans, rice, hazelnuts, pine nuts, pistachios and other dried fruit foods.
Advantages of Nuts Dryer Machine:
1. Roasting time can set up according to client need or material. When time is on, machine will warn.
2. Heating effect is uniform. Machine is constantly rotated. Back and forth, up and down, all heating well from different direction.
3. It can large increase roasting material oil squeezing rate. Usually equipped with oil press machine.
4. Roasting time is short. Each time it needs about 20minutes. Of course, different situation, roasting time will be a little different. For example, if you won't need the soybean skin crack, then 20 minutes is ok, if you will need the skin crack completely, then need about 40min one time.
5. Reasonable structure, low energy consumption, high efficiency, safety.
6. Low investment costs. Machine price is low, and have many models from small to large, customers can choose according to their needs.

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JINFENG DRYING EQUIPMENT CO.,LTD , https://www.jf-graindry.com