LED switch power selection and use the matters needing attention

LED switch power selection and use the matters needing attention

Discovery
A
metal shell and shell of the power cord and general (FG) connection, reliable grounding to, to ensure safety, do not miss will pick up in the zero line on shell.

B
at installed after the trial run before current check again, please check and all wiring terminal, and make sure that the connection to the input and output, communication and dc, single and heterogeneous, positive and negative, voltage value and current value, no doubt, can electrify operation right.

C
for high power LED switching power supply, generally all have three or more of the "+" and "" the input terminals output terminals, they are actually belong to one output electrode, just for the user, and will DuoGe convenient connection terminals in internal and then in respectively together.

D
to achieve the effect of heat, fully are usually installed in the air convection conditions good position or installed in case on the shell through the shell will hot on the spot.

E
the LED switch power supply before the factory with resistance, such as the need of load in tolerance or perceptual load, prior to when in order to illustrate

F
for double ways of output with load symmetry, choose symmetry output power is
G
to the power of the user, not FG grounding hand shell or output have linen electrical sense is a normal phenomenon, floating ground FG to the earth when there are 110 V ac output around, this is the power of the internal structure decided.

Eight
the AC power supply input the definition of the power output power input = / (input voltage power factor * * efficiency)

H
collect leakage current: many sets of power supply when use, common ground point, in the same intake leakage current by each unit is the leakage current form, then to check added protection of ground wire reliability and grounding resistance whether meet the requirements, against electric shocks.

Related reading:
Previous:LED the improvement measure failure problem
next article:The design of high power LED light
Directory page:LED Information
Return top