The one-time 2001 version of the security means specification UL60950-1 for ability supplies expires inwards Dec 2010. Usually revision changes are tike for industrial ability supplies, only i telephone commutation component is affected this time. The 2005 version stipulates that whatever surge suppressor on the principal side shall endure a VDR (Voltage Dependant Resistor) which must endure comply amongst Annex Q together with endure approved to IEC 61051-2.
To comply, ability furnish manufacturers volition bring to modify their designs together with retest to demonstrate compliance to the immunity specification EN61000-4. This is going to endure costly inwards either Engineering task costs (opportunity cost) or external exam identify fees.
Manufacturers may forthwith determine to obsolete boring moving products earlier Dec 2010 together with proceed investing inwards novel products.
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