The standard is 11 years old and certainly wouldn't pass the IEC head
office editors now. 'Burden' is in Electropedia only in the context of
instrument transformers:
321-01-25
/burden (of an instrument transformer)
the impedance of the secondary circuit
Note – The burden is usually expressed as the apparent power absorbed by
the secondary circuit at a specified power factor at the rated secondary
current (or voltage).
/
The Note explains what the authors of 61850-3 did, stretching the
definition wildly out of shape. Why didn't they just write 'power input'?
On 2024-08-22 20:23, [email protected] wrote:
I agree with John’s comment. I will add that standard writing panels
(committees) should use their vocabulary with intelligence. Any
ambiguous terms should be defined somewhere in part one of IEC 61850.
I don’t have a copy, and the IEC preview doesn’t help.
I will hazard a guess that in this context, the adjective
“intelligent” means a power supply that is able to communication over
a network for the exchange of data and for remote control or
configuration.
Ralph
*From:*John Woodgate <[email protected]>
*Sent:* Thursday, August 22, 2024 10:41 AM
*To:* [email protected]
*Subject:* Re: [PSES] Burden test
I think you are required to state the power consumption of every port
that consumes power. If your SMPS really is 'intelligent', then the
standard applies. But I wonder what the relevant definition of
'intelligent' is. There appears to be no method of measurement for IQ!
On 2024-08-22 17:53, Richard Nute wrote:
Hi Bostjan:
While this does not answer your specific questions, it may be helpful:
https://en.wikipedia.org/wiki/IEC_61850
Good luck, and best regards,
Rich
*From:*Boštjan Glavič
<[email protected]>
<mailto:[email protected]>
*Sent:* Thursday, August 22, 2024 4:32 AM
*To:* [email protected]
*Subject:* [PSES] Burden test
Dear all,
Is anyone familiar with burden test according IEC 61850-3
standard? Is this test applicable for switch mode power supply
with AC input and DC output?
How to conduct the test? What is the idea of the test?
Standard is not really clear.
Thank you for your support.
Best regards,
Bostjan
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