Many moons ago I went through this exact same cycle. VDE did not like
our refrigerator switch so we went hunting. We eventually settled on a
Cherry F82A series switch that calmed the VDE engineer down. These may
not be available any more. They were rated 50,000 operations.
http://tinyurl.com/lrbspbn
Then later this was changed out to use a Micro Switch WW1K05D-D9. These
were rated 100,000 operations.
http://tinyurl.com/nkaaye4
What I liked about this switch is that is has this little plastic I
shaped piece that can be inserted to "cheat" the interlock. But if you
try to close the cover with that in place, you either can't or more
likely the cover will dislodge the "cheat" and cause normal operation to
be restored.
Just a little something from the way-back machine.
On 6/11/2014 8:49 AM, CR wrote:
On 6/10/2014 11:39 PM, Nyffenegger, Dave wrote:
EN 60950-1 says that interlocks must be designed to prevent
inadvertent reactivation and that the ability to operate the
interlock with a test finger is considered likely to cause
inadvertent reactivation of the hazard.
How do they expect the equipment to powered up for troubleshooting?
The 300 Kg office copier; it has a combination safe holding the
interlock.
Cortland Richmond
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