Street lamps use wire matters should be paid attention to

Street lamps use wire should note the date: 2014 - 08 - 27 17:14:42] Share [ 1314] Time so now we have installed in most of the street lamp, this let everybody at the time of the night is more safe, bring me a lot of help, but in the use of some q

street lamps use wire should note

date: [ 2014 - 08 - 27 17:14:42] Share [ 1314] Time

so now we have installed in most of the street lamp, this let everybody at the time of the night is more safe, bring me a lot of help, but there are some problems when using need to pay attention to, the following is used by street lamp manufacturers to introduce the street lamp wire should notice: to compensate direct touch touch protection method, choose the current electrical maintenance, is the other straight touch touch lamp fails to choose additional maintenance. GB 13955 - 1992 the measures the current equipment maintenance and operation rules is not touch the outdoor unit of electrical equipment, while the 2005 edition of the relevant provision clearly requires all outdoor lighting circuits should be set up leakage maintenance. As to the leakage switch maintenance measure current value left how much is appropriate, on the basis of oOHz the effect of the alternating current through the human body, LED street lamp, thinking to the rain outside environment, with more than should not be greater than lOOmA measures current. About the urban landscape lighting system. Because the distribution line is longer, cross section is small, often lack of grounding fault current in order to make over current protection measures, combined with the lack of professional operation for maintenance, in setting the leakage source to maintain the most feasible. 0 N. Five times because the maintenance for all lines and lighting lamps and lanterns is common, so the maintenance of electrical leakage of electric current maintenance measures should be greater than the normal operation of lighting and lighting lamps and lanterns is 2 times the leakage current of all. Cable leakage current is by the line resolution of distributed capacitance, single-phase cable leakage current according to 22 ma/km budget; Three-phase cable line in the power supply voltage balance and three relatively distributed capacitance flat under the condition of leakage current is close to zero, but in practice, the system voltage can't be completely balanced, each phase distributed capacitance also wood was flat, and there are asymmetric operation condition, so two-phase street lamp still think according to 22 ma/km. In the use of street lamp wire is indispensable, for we must be clear what should be paid attention to when using, so as to avoid damage, matters should be paid attention to for street lamps using wire lamp factory was introduced to this, I hope it can help you.

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