Electro Industries/GaugeTech Nexus 1262, User Manual

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Electro Industries/GaugeTech
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Glossary
Pulse: The closing and opening of the circuit of a two-
wire pulse system or the alternate closing and
opening of one side and then the other of a three
wire system (which is equal to two pulses).
Q Readings: Q is the quantity obtained by lagging the applied
voltage to a wattmeter by 60 degrees. Values are
displayed on the Uncompensated Power and Q
Readings screen.
Quadrant
(Programmable Values and
Factors on the Nexus
®
meter:) Watt and VAR flow is typically represented using
an X-Y coordinate system. The four corners of the
X-Y plane are referred to as quadrants. Most
power applications label the right hand corner as
the first quadrant and number the remaining
quadrants in a counter-clockwise rotation. Follow-
ing are the positions of the quadrants:
1st - upper right, 2nd - upper left, 3rd - lower left
and 4th - lower right.
Power flow is generally positive in quadrants 1
and 4.
VAR flow is positive in quadrants 1 and 2.
The most common load conditions are:
Quadrant 1 - power flow positive, VAR flow
positive, inductive load, lagging or positive
power factor;
Quadrant 2 - power flow negative, VAR flow
positive, capacitive load, leading or negative
power factor.
Register: An entry or record that stores a small amount of
data.