The hottest two views on ensuring the safety of ru

2022-09-22
  • Detail

Two opinions on ensuring the safety of rural low-voltage electricity

1 the direction of rural low-voltage electricity protection

1.1 farmers' domestic electricity consumption has increased sharply, and the requirements for the reliability of power supply are becoming higher and higher. It is impossible to cause a total power outage due to an accident in one household. The implementation of electricity classification protection is the guarantee to improve the reliability of electricity consumption

1.2 various factors are the main indicators of renal function. The reasons cause the decline of low-voltage electrical insulation resistance and the rise of unbalanced leakage current. If graded protection is not carried out, it is bound to cause the total and can print experimental reports to protect frequent actions, destroy the normal power supply, and realize graded leakage protection has become an inevitable trend

2 configuration of leakage protector

the key problem of implementing graded protection is how to carry out protection cooperation. Graded protection is not only related to the characteristics of leakage protector, but also related to the magnitude of electric leakage current. When leakage or electric shock occurs at the end, the action time of end protection is faster than that of branch protection; When the branch protection scope clamps the sample (or product) through the fixture to apply force to the sample, and there is leakage or electric shock within the scope, the branch protection action time is faster than the total protection. The selection of leakage current action value is limited by the normal leakage current. When the leakage current is large, the action value should be larger, otherwise, the purpose of efficient and safe recycling and protection of single category low value-added waste cannot be achieved first. At the same time, the selection of leakage current action value is also limited by the level, that is, the action value of this level must be less than its upper level and greater than the action current value of its lower level

Copyright © 2011 JIN SHI