**K-Bus (Courier)**- Term used for the courier protocol on K-Bus interface for K-Relay range manufactured by Alstom.**kcmil**- One thousand circular-mils**Kilo**- A prefix indicating one (1) thousand.**Kilowatt**- 1000 watts of real power. Expressed at kW.**Kilowatt Hour**- The use of one thousand watts for one hour.**Knee-Point e.m.f.**- Result of when a sinusoidal e.m.f. is applied to the secondary terminals of a current transformer is increased by 10% causes the exciting current to increase by 50%.**kVA**- 1) Apparent Power expressed in Thousand Volt-Amps. 2) Kilovolt Ampere rating designates the output which a transformer can deliver at rated voltage and frequency without exceeding a specified temperature rise.**KVAR**- KVAR is the measure of additional reactive current flow which occurs when the voltage and current flow are not perfectly in phase.**kW**- See "Kilowatt".**kWh**- See "Kilowatt Hour"**KYZ**- A designator for the Form-C pulse initiator output from a transducer.

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