IEC 60601-1, electrical safety, medical device inside ambulance (12VDC)

[francisco]

Hi, Please note if your equipment is used in ambulance (EMS environment), its applied part should be type F (BF or CF). the type B applied part isn't acceptable. As you stated, type F applied design should revolve your problem, also this is mandatory.

OK,....then the main question would be; inside ambulance, if everything accessible parts (chassis ambulance...rails for suporting medical devices, beds etc, or medical devices enclosure....) have to be treated like applied parts? (There are medical devices (for example; electronic oxygen conserver) that all accesible parts (for example...its enclosure) have to be treated like applied parts.

Thanks

 

[francisco]

Hi, Please note if your equipment is used in ambulance (EMS environment), its applied part should be type F (BF or CF). the type B applied part isn't acceptable. As you stated, type F applied design should revolve your problem, also this is mandatory.

OK,....then the main question would be; inside ambulance, if everything accessible parts (chassis ambulance...rails for suporting medical devices, beds etc, or medical devices enclosure....) have to be treated like applied parts? (There are medical devices (for example; electronic oxygen conserver) that all accesible parts (for example...its enclosure) have to be treated like applied parts.

Thanks

 

[Enternationalist]

EN 1789; 4.2.4.3
Any additional electrical systems fitted to the base vehicle shall be separate from the base vehicle electrical system and the body or chassis shall not be used as an earth return for additional circuits.

I don't really understand how you are not violating this requirement if you are using the chassis connection to ground your device's enclosure.
This really sounds like a situation in which you need to go back and design the device properly to not have unacceptable EMC emissions in the first place, rather than making it an installation into the chassis of the ambulance to dump your excess noise into the vehicle's system.

If you find yourself asking if the whole ambulance is an applied part, you need to really go back and ask yourself if the design makes sense in the first place. This is a difficult problem not because the standards are unclear, but because you're trying to bandaid over poor performance.

 

[francisco]

Hi,
I have a doubt, I have to power my medical device (it doesn't have applied parts,...although this I think isn't important for my questions) inside ambulance.

I have two type of power supply cable (A and B). From the point of view of electrical safety...what of them is better to the operator?
Both are the same or one of them is better?. You can see these options in attachment file

Remember 60601-1 (subclause 3.120)
"An external d.c. power source (e.g. in an ambulance) is considered as a SUPPLY MAINS"

Does this subclause entire say that option B must be implemented mandatory?


Thanks

 

[francisco]

Hi,
I have a doubt, I have to power another medical device (it doesn't have applied parts, it will also be class II) inside ambulance.
I have two type of power supply cable (A and B). From the point of view of electrical safety...which of them is better to the operator? Both are the same or one of them is better?. You can see these options in attachment file.

Remember 60601-1 (subclause 3.120) "An external d.c. power source (e.g. in an ambulance) is considered as a SUPPLY MAINS" .
Does this subclause entire say that option "B" is better and mandatory?
(remember that the negative pole is accessible on the plug in option "A" however in option "B" isn't the case)

This model plug (Option "A").....is valid to an medical power adapter (attachment file) but isn't correct to connect directly in ambulance?

thanks