Isolation level of isolated DCDC module?

[treez]

Hello,
We need an isolated DCDC module to give 15V output from a 13V input. Its to provide isolated power to a DALI comms bus from a non mains isolated source.
We need full mains isolation. This is usually described as being able to withstand a hi-pot test at “3000VAC at 50Hz for one second”.
The Traco TEN 3-1213 DCDC module gives isolation of “1500VDC for one second”.
Do you think that this is therefore safe to use for our DALI comms bus? (ie, does it equate to full mains isolation)?

Traco TEN 3-1213 DCDC module datasheet:
https://www.farnell.com/datasheets/...086.845751712.1519485949-287702491.1506211291

 

[KlausST]

Hi,

I doubt it is according safety regulations.
15V is low voltage and 13V is low voltage....both are not dangerous.

In opposite to an AC/DC module with 230VAC input, which clearly is dangerous voltage.

I recommend to find out what regulation(s) is valid for your application.
Then contact Traco if the DCDC converter complies with this regulations.

Klaus

 

[treez]

Thanks, we need the type of isolation that you get from primary to secondary in an offline isolated power supply for eg a domestic product....where human hands might touch the output. We need "basic " insulation.

The alternativ e NXJ1S1215 has 4.2kV of isolation. 3000VAC * sqrt(2) is 4240Vpk
So i reckon the 4.2kvDC of isolation should give us "basic" insulation level?

NXJ1S1215
https://www.farnell.com/datasheets/...641.845751712.1519485949-287702491.1506211291

 

[treez]

In fact, ive dug out a DALI spec which says..

The minimum requirement for system components conformant to this standard shall be basic
insulation as defined in IEC 61347-1.

But we dont have IEC61347-1 and it costs £120.

 

[barry]

But we dont have IEC61347-1 and it costs £120.

Are you a hobbyist or a legitimate company? Like, where you sell products to the public? And you're too cheap to spend a pittance on properly validating your design? That's just unbelievable.

 

[FvM]

The Traco TEN 3-1213 DCDC module gives isolation of “1500VDC for one second”.

Datasheet says 1500VDC 60 seconds...

As far I'm aware of, IEC61347-1 specifies clearance and creepance but no test levels. You may refer to other safety standards, e.g. EN61010.