SQLC-214-097
20
Measurement
factor
Example of display Note
Measurement
factor
Example of display Note
Reactive
power
LAG
or
LEAD
display
Power factor
LAG
or
LEAD
display
var-hour
(Power
receiving，
LAG)
“LAG”
display
var-hour
(Power
receiving，
LEAD)
“LEAD”
display
var-hour
(Power
transmission,
LAG)
“LAG” and
”－”
display
var-hour
(Power
transmission,
LEAD)
“LEAD” and ”
－” display
Frequency
・ About a current-leakage measurement display
The current leakage of this product can select a factor from the next two
types.
The system by which Io where an electric current for the capacity by a earth
capacitance (Ic) and an electric current for the resistance by insulation
degradation (Igr) are synthesis is measured.
The method which measures only the resistance part current (Igr) by insulation
degradation etc.
By the Igr method, a current leakage is calculated from a voltage input and
a zero phase-current input. In case of 3-phase 3-wire (1-phase earthing),
in the range whose phase angle (leading-phase angle of the zero-phase current
by reference voltage) of these inputs is 150 to 350°,
it will become the outside of a measuring range and a measurement display
of a zero-phase current will be "----".
② Current harmonic measurement display
It is a measurement factor display of the distortion factor of current, relative harmonic content, harmonic effective
value, etc. The measurement value of three factors is displayed at the maximum.
About sub-monitor (center) and sub-monitor (right), it is possible to change to the factor that always indicates by
measurement. And, it is possible to change to a display of the maximum value by switch operation.
These maximum values can be reset by switch operation (it updates to the instantaneous value at the time).
In addition, as for the maximum value, even power-supply reset is not cleared. And, a display is held, even after
elapsing for 10 minutes without operating a switch.
Measurement display element)
Main monitor ：Distortion factor
Sub-monitor (Left) ：5th conversion or harmonic order (n)
Sub-monitor (Center)：Harmonic 5th conversion content or harmonic nth content (n=3,4,5,7,9,11,13,15)
Sub-monitor (Right) ：Fundamental-wave effective value , 5th harmonic conversion effective value or harmonic
nth effective value (n=3,4,5,7,9,11,13,15)
The measurement display besides
an Igr measuring range
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