Surge Current - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th January 2013, 02:12 PM   #1
diyAudio Member
 
Join Date: Oct 2012
Default Surge Current

I don't see any forum for this problem, but it involves my Solid State pwr. amps, so I'll try it here 1st.

I have 5 x Yamaha MX-1000 power Amps. If they are all turned on at once, the Surge Current in the amps, trips the 20 Amp. ckt. breaker in the main Breaker Panel. If I turn them on individually, they will run fine (even Very Loudly) on the same 20 amp. ckt. breaker.

So what I need is a Line Conditioner(?) that will allow me to program a different AC Turn On Delay, for each amp.

Years ago I remember that a very expensive AC conditioner could do that (don't remember the brand or model), But it only had programable turn on delay, for 2 outlets. I need to sequence delay AC power to 5 pwr. amps.

I could build it myself, if I could find a schematic or PC board.

Any Ideas?

MLStrand56

Last edited by MLStrand56; 25th January 2013 at 02:16 PM. Reason: spelling
  Reply With Quote
Old 25th January 2013, 02:20 PM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Ideas... use a high wattage low value resistor in series with the mains that is shorted out after a few 10's or 100's of milliseconds. Similar idea to the standard slow start for toroidal trannys.

Depends how you turn them all on of course... I'm assuming you throw one switch and they all power up.
__________________
-------------------------------------------------------
Installing and using LTspice. From beginner to advanced.
  Reply With Quote
Old 25th January 2013, 02:27 PM   #3
diyAudio Member
 
Join Date: Nov 2008
Location: Victoria,TX
Blog Entries: 1
Hi,
You can also use zero crossing SSR and turn each one in sequence in delay using a micro processor. the zero crossing SSR also prevent the inrush current. it is a simple application.
  Reply With Quote
Old 25th January 2013, 02:41 PM   #4
DF96 is online now DF96  England
diyAudio Member
 
Join Date: May 2007
The thing you need is called a Power Sequencer.
  Reply With Quote
Old 25th January 2013, 02:51 PM   #5
diyAudio Member
 
Join Date: Oct 2012
Default Power Sequencer

Quote:
Originally Posted by DF96 View Post
The thing you need is called a Power Sequencer.
Thanks! At least now I know what to look for.

MLStrand56
  Reply With Quote
Old 25th January 2013, 02:58 PM   #6
diyAudio Member
 
Join Date: Oct 2012
Default A Few Seconds

Quote:
Originally Posted by Mooly View Post
Ideas... use a high wattage low value resistor in series with the mains that is shorted out after a few 10's or 100's of milliseconds. Similar idea to the standard slow start for toroidal trannys.

I'm assuming you throw one switch and they all power up.
Actually I need a power up delay of several seconds per amp.

Yes, I turn them on with a single switch. When I lived in USA, I wired a 30 amp service to the Amp Rack, & used a 120V Contactor to switch the 30 amp service. Now I live in Philippines & rent a house. The whole house only has 5 ckt. breakers (very common here)

MLStrand56
  Reply With Quote
Old 25th January 2013, 03:49 PM   #7
JMFahey is offline JMFahey  Argentina
diyAudio Member
 
JMFahey's Avatar
 
Join Date: Mar 2009
Location: Buenos Aires - Argentina
1) just turn them on sequentially, by hand.
Not that hard to do.

2) build a board with 5 555 timers, with varying delays (5/10/15 ... seconds) each driving a 220V rated relay with enough current capability to turn your amps on safely.
Plug your amps in the outlets in this controller, and leave them always on.
Now your On-Off switch is the small one which powers the controller/sequential delay board.

Something like this will do for 1 stage.
Repeat as needed
Click the image to open in full size.
For a fuller discussion, how_to_calculate and other cool LM555 applications:
http://home.cogeco.ca/~rpaisley4/LM555.html

Last edited by JMFahey; 25th January 2013 at 03:58 PM.
  Reply With Quote
Old 26th January 2013, 01:07 PM   #8
diyAudio Member
 
Join Date: Oct 2012
Default 555 timers vs. Delay

Quote:
Originally Posted by JMFahey View Post
build a board with 5 555 timers, with varying delays (5/10/15 ... seconds) each driving a 220V rated relay with enough current capability to turn your amps on safely.
Plug your amps in the outlets in this controller, and leave them always on.
Now your On-Off switch is the small one which powers the controller/sequential delay board.
The 555 timers could be controled by the Master On/Off switch!!!

I'm Intreguied(sp?)!!!!!

MLStrand56
  Reply With Quote
Old 26th January 2013, 02:31 PM   #9
diyAudio Member
 
Join Date: Oct 2012
I found a Carvin 10 ch. AC delay sequener on E-bay for $139. The "suggested" retail price is $489. It's WAY more than I need, but it's WAY cheaper than PANAMAX, which Doesn't do what I need.

MLStrand56
  Reply With Quote
Old 26th January 2013, 07:15 PM   #10
Bare is offline Bare  Canada
diyAudio Member
 
Join Date: Dec 2001
Location: vancouver
Geee all that effort and expense .. for naught.
Learn to turn them on in groups of less than five :-)
OR fit an uprated Mains breaker, or even upgrade the Wires to the single /circuit plug you use.. for All 5 of the contraptions
  Reply With Quote

Reply


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
SurgeX vs. Zero Surge pooge Power Supplies 0 15th July 2006 03:50 AM
Transformer surge current lawbadman Solid State 20 7th September 2003 07:47 PM
DIY surge suppressor? cowanrg Everything Else 2 23rd June 2003 01:11 AM
P3A turn on current surge Fritz Solid State 3 8th April 2003 09:23 PM


New To Site? Need Help?

All times are GMT. The time now is 02:33 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