SMPS800RE Switch Ratings - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Inactive Vendor Forums > Connexelectronic

Connexelectronic Commercial Vendors large & small hawking their wares

 
 
Thread Tools Search this Thread
Old 15th October 2013, 12:53 PM   #1
diyAudio Member
 
Join Date: Apr 2012
Default SMPS800RE Switch Ratings

Hi all,

I would like to enquire what's the lowest possible current ratings for use with a 65V SMPS800RE.

Understand that Cristi recommends a 250V 10A AC switch in the manual, but it's tricky finding a good looking switch with said rating. Would love to use those metal LED momentary, but most are rated till 3A only.

Also understand that switches are usually able to carry more than their rated current, but definitely unsure if that's enough given that the peak power draw should be up to 15A.

Furthermore, not too sure if the switch connectors handle the full current of the power supply. Am guessing there might be a chance that it's a separate circuit.

Apologies if this is a basic question, but thought I'd defer to others who are way more knowlegeable than I with such things.

A big thank you in advance!

Last edited by robertdarzi; 15th October 2013 at 07:07 PM.
 
Old 21st October 2013, 06:01 AM   #2
Cristi is offline Cristi  Europe
diyAudio Member
 
Join Date: Dec 2008
Location: Dortmund+Shenzhen
Copied from my email reply:

The switch doesn't have to carry more than 1.5A under normal operation only at start-up is required to pass more current.
A 10A switch should be used for reliability, because the inrush current at stat is high and the switch can be damaged after some time if is rated at lower curret. If 10A is not available, a 6.3 A min. can be used or a 5A with dual contacts connected in parallel.

Added:
A dual pole 5A switch can be also used, with both poles connected in parallel. This swtch would theoretically allow 10A current to pass through but the problem is at the very first moment when the SMPS have to start, the inrush current of charging capacitors limited only by the series thermistor has a peak value of ~ 10A and a dual switch cannot guarantee that both contacts will close in the same time, in fact there is a high chance that there is a time difference of up to few ms between both contacts are closed, so we can consider that the initial full current is carried by only one contact at the very first moment.
__________________
www.connexelectronic.com complete assembled amplifier and SMPS
 

 


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sanyo JCX2900KR - very special Main Switch - Solution without Switch wanted tiefbassuebertr Solid State 1 15th February 2012 03:38 AM
Output dissapation ratings vs amp ratings jol50 Car Audio 3 16th April 2010 11:49 PM
Switch ratings thefunkybeat Parts 0 13th March 2007 09:26 AM
Never try to switch 450V DC at 3A with a conventional mains switch... Eva Power Supplies 28 1st November 2006 09:24 AM


New To Site? Need Help?

All times are GMT. The time now is 10:33 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2