cupoftea
Advanced Member level 6
Hi,
A customer has sent us a spec for a full bridge SMPS.
300W, 24VIN, 32VOUT, 225KHZ,
They request "1500VDC isolation"
Thats all they say,
They dont say whether it needs to be basic, supplementary, or reinforced isolation.
They also dont say what is the time it needs to withstand 1500vdc
They also dont say what is the maximum leakage current that can flow during the hipot test duration.
They also dont say what pollution degree, but given its to go in a toally sealed metal aluminium box, then i assume pollution degree is 1?
Isolation specs always just seem to say "1500VDC" and no more, as if it everything should be obvious about it.
As such, we will make it 1.5mm isolation creepage/clearance distance on the PCB...then we cant go wrong?
I found this on the web...
Table 3....
A customer has sent us a spec for a full bridge SMPS.
300W, 24VIN, 32VOUT, 225KHZ,
They request "1500VDC isolation"
Thats all they say,
They dont say whether it needs to be basic, supplementary, or reinforced isolation.
They also dont say what is the time it needs to withstand 1500vdc
They also dont say what is the maximum leakage current that can flow during the hipot test duration.
They also dont say what pollution degree, but given its to go in a toally sealed metal aluminium box, then i assume pollution degree is 1?
Isolation specs always just seem to say "1500VDC" and no more, as if it everything should be obvious about it.
As such, we will make it 1.5mm isolation creepage/clearance distance on the PCB...then we cant go wrong?
I found this on the web...
Table 3....
What is clearance and creepage distance of insulation？
This article is mainly aimed at preventing electric shock damage to the human body. To achieve electric shock protection, electronic equipments must have an effective insulation method, which can be divided into clearance and creepage distance and solid insulation materials. This article will...