[SBE] Phasor current draw

[Ness, Mark]

http://www.tunwallradio.com/

 

Take a look at this

 

Mark Ness

 

From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of
Edwin Bukont
Sent: Monday, July 13, 2009 4:36 PM
To: sbe
Subject: Re: [SBE] Phasor current draw

 

The TPO is 5. My main concern is the total draw of the contactor coils
during switching.
 
Thanks

Edwin Bukont CSRE, DRB, CBNT 
V- 240.417.2475; F- 240.368.1265 

 




 

> Date: Mon, 13 Jul 2009 16:16:04 -0400

> From: ednixon at yahoo.com

> To: sbe at sbe.org

> CC: 

> Subject: Re: [SBE] Phasor current draw

> 

> What power levels ?

> 

> --- Original Message ---

> From:"Edwin Bukont" <ebukont at msn.com>

> Sent:Mon 7/13/09 1:11 pm

> To:"sbe" <sbe at sbe.org>

> Subj:[SBE] Phasor current draw

> 

> 

> I am trying to create a DA/NDA remote control for a 3-tower phasor

system. The system has remote for choosing transmitters and Day or Nite.
It does not have remote for choosing DA/NDA.

> 

> 

> 

> Currently, someone has brought out the Tx and D/N to 240VAC relays

with 30A contacts. Is this really necessary?

> 

> 

> 

> The mode change itself appears to throw maybe 5 contactors including

the towers. I realize that in the DA mode it has to support the current
involved with switching of Day and Night.

> 

> 

> 

> I want to do my additional control with a 24VDC coil and contacts

rated at 15A/250VAC.

> 

> 

> 

> Am I missing something here. Do I really need those big power relays

or will something smaller suffice. I do not know what the current draw
is,,and it would be difficult to amp clamp.

> 

> 

> 

> Anybody have any ideas what a 30-40 year old three tower, 3 modes

Phasor array might draw in Amps at 250VAC during switching?

> 

> 

> 

> Thanks

> 

> Edwin Bukont CSRE, DRB, CBNT 

> V- 240.417.2475; F- 240.368.1265 

> 

> 

> 

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