Absolutely my experience as well. I'm much happier with the "thunk" when a big contactor operates as planned, rather than the "ouch" when an SSR does it own thing.
-----Original Message-----
From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of David Speck
Sent: 15 October 2014 21:53
To: mddeming@xxxxxxx; Tesla Coil Mailing List
Subject: Re: [TCML] SSRs?
Matt,
Based solely on my own experience, I'm not a huge fan of SSRs for TC use, for the following reasons:
Our loads are usually highly inductive, and many ordinary SSRs don't like inductive loads.
The inputs of SSRs are very sensitive, and may be falsely triggered by the high RF levels inherent in TC work, with undesirable results.
Most importantly, many SSRs have low levels of leakage current, even when "Off", perhaps just a handful of milliamps. This is no problem if the load is a light bulb or a motor. However, if you pass this small current through a step up transformer, you can end up with a really unpleasant surprise from a "deenergized" system.
For my systems, I use only good old fashioned electromechanical relays.
YMMV.
Dave
On 10/15/2014 2:20 PM, mddeming--- via Tesla wrote:
Has anyone had experience with using solid state relays in medium-size TC Control panels, such as:
Solid State Relay SSR-40DA 40AMP 3-32VDC Output 24-380V AC Solid State Module?
Matt D
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