News-
{dede:channel type='sun' typeid='57'}
- [field:typename/] {/dede:channel}
Contacts
[field:content/]
{/dede:sql}
Why must spark machine ground wire
- writer：He Xing spark machine
- chick number：{dede:field name='click'/}
- Tag:
First of all, this problem is analyzed from a spark tester works: the power supply voltage to each electricity components. By the voltage regulator (containing high-frequency oscillation circuit used to generate the high-frequency voltage) to adjust its operating voltage, and after high-voltage transformer transformer provided to test electrode (Lianzhu) high frequency high voltage. It should be noted that is the voltage at the test electrode is high, but the current is small (Usually less 50mmA). When the measured wires through the test electrode: if the wire insulation is good, the wire will produce a stable induction voltage, a voltage difference does not exist; when the insulating layer defects (such as: leakage of copper, there are holes, badly decentered), The high-frequency high voltage will discharge (which is a high-frequency, high-voltage characteristics) of the metal conductor. Current is very small, the voltage will be the dramatic decreases. Generate a voltage difference. Then breakdown detection circuit of the comparative amplification circuit, will be a voltage with a reference voltage comparison. The voltage difference amplifier, sent to the alarm display circuit alarm.
According to the the above spark machine works, we can explain why the machine will alarm ungrounded. But only for ungrounded serious leakage copper, the line function traction slower. Because on the the serious leakage copper, slower line, a high frequency high voltage can be sufficiently discharged metal conductor, generates a voltage difference can be detected. But those pores badly decentered yet leakage copper, traction faster line may due to the discharge is not sufficient can not be detected. If we are to the other end of the grounding terminal and the core wire of the spark machine. So those holes, serious eccentric yet leakage copper, traction speed line discharge can form a closed loop through the earth to accelerate discharge, in order to guarantee its is to produce a detectable pressure differential. Prevent leakage measurements. Here to point out that, through the earth to form a closed loop (ie short circuit), the spark inside the short-circuit current limiter guarantees security.
Through the above analysis, we can sum up the spark machine use, why must the ground wire the reasons:
A. sparks chassis grounded in order to ensure human safety: any electrical appliances have the possibility of leakage occurs. When the spark chassis body ground leakage occurs, leakage directly into the earth to ensure human safety.
B. spark machine ground terminal and the other end of the core wire, to allow current to earth, the current through the pinhole access to form a closed loop, so that the count is accurate, and to prevent leakage of measurement.
I recommended that the following points should be noted when using a spark machine;
A. spark chassis body must be grounded.
B. spark machine ground terminal and the core wire the other end (ie core spool end) must be grounded.
C. spark machine to the appropriate voltage setting is a little larger than the standard. (Pay attention to, this and every place, and each wiring material)
D. closing line speed can not be too large.
Products
Hot search：
Product catalog：-
{dede:channel type='sun' typeid='55'}
- [field:typename/] {/dede:channel}
- Continental Address: Dongguan City, Guangdong Province, Dalang Town outlet management the area (Guanzhang sections)
- He Hing Industrial Machinery Co., Ltd. is a professional spark machines, milling machines, grinders, CNC engraving and milling machine manufacturer of CNC Machining Center, the spark machine has been developed in Taiwan in 1976, has been committed to manufacturing the finest types of work machine tools, after decades of effort, has grown into one of the largest manufacturer of all kinds of workhorses, investment in mainland China, Dongguan City, Hing CNC Technology Co., Ltd.
- Tel :0769 -8,319,968,283,101,719 Fax 0769 -83,206,682 Website: http://www.healthcnc.com mailbox: health@healthcnc.com Technical Support:SanMing IT
online serve |
|---|
|
business consult
 customer serve
|