Rich,

I assume you are in Europe. The EN61010-1 is the safety standard for laboratory 
equipment. Most such equipment falls under the LVD unless there are moving 
parts which then it falls under the Machinery Directive (laboratory equipment 
is the Red Headed Step child).

The 60204 is the electrical safety standard for industrial equipment. Probably 
doesn’t apply to the test equipment used for Radiated Immunity.

The EN ISO 12100 is the Risk Assessment standard which is harmonized to the 
Machinery Directive. It is a good idea to do this assessment whether it is 
required or not.

For instance, what are the hazards to your employees associated with the 
Radiated Immunity test?  I assume exposure to RF Fields. How much power do you 
generate? Is it enough power to cause an injury? And if so, is it moderate or 
serious?

Our lab only generates up to 10V/m and our largest amp is only 100 watts. Not 
too hazardous. If you brush against the antenna with the RF on you might get a 
minor RF burn. Otherwise, we have determined the field strength Outside our 
chamber with the Door Open not to be hazardous, so we do not interlock the 
door. We are looking to install a Status Light (Red Light) near the door so 
technicians know if the RF Power is on or not before entering.

However, if you use much higher power, then many chambers use an interlock 
switch on the door(s) which will disable the output of the Amplifiers when the 
door is open. Most amps have this interface for you to use.

In Europe, laboratory equipment only requires a Manufacturer’s Declaration. In 
North America, you may need to have the equipment certified by an NRTL or at 
least have an NRTL perform a Field Evaluation of your setup to satisfy your 
safety authority (whether internal or OSHA).

Hope this was helpful.

The Other Brian

From: Richard Jones [mailto:[email protected]]
Sent: Thursday, September 17, 2015 11:10 AM
To: [email protected]
Subject: [PSES] Radiated Susceptibility Door Interlock

Hi

As a safety precaution we have a Safety Interlock installed on the doors of our 
EMI Chambers but have now been taken to task that they don't meet safety 
requirements.

I am chasing the Test Equipment manufacturers who I believe may have built to 
EN61010 (the standard does discuss safety interlocks) but as part of our 
company's responsibility we also have to meet safety interlock requirements for 
operator safety.

Standards which I've been told are relevant from our Health and Safety team 
include IEC 60204, ISO 12100 or CSA Z432-04

Has anyone else had a similar problem?

Rich.
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