VHK - What does VHK stand for? The Free Dictionary
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[TVHK.sup.1] = [H.sub.1](VHK | [ID.sup.i+1.sub.MS]) (4)
[TVHK.sup.2] = [H.sub.1](VHK | [ID.sup.i+2.sub.MS]) (8)
So an attacker who does not know the secret values, VHK or PMK, cannot send legitimate VHO authentication request.
Safety features of the VHK and VFK DIN series include over current, over temperature, input transient, and short circuit protections.
The VHK DIN family ranging from 50~200 W measures 107.5 x 101.8 x 52.6 mm (4.23 x 4.01 x 2.07 in) while the VFK DIN family ranging from 400~600 W measures 199.0 x 127.0 x 53.6 mm (7.83 x 5.00 x 2.11 in).