Percentage Error; Start; Defluction - Huawei DTSU666-H User Manual

DTSU666-H Smart Power Sensor
User Manual
A.2.2 Percentage error
Table A-1 Limited value of active percentage error of the energy meter on balanced load
Type
Connect via current
transformer
Notes
Table A-2 Limited value of active percentage error of the energy meter on unbalanced load
Type
Connect via current
transformer
Notes
A.2.3 Start
Under the power factor of 1.0 and 2‰In, the instrument can be started with continuous
metering (if it is multiple phase instrument, then it has balanced load). If the instrument is
designed based on measurement for bi-directional energy, then it is suitable for each direction
of energy.
A.2.4 Defluction
When applying voltage while the current circuit has no current, the test output of the
instrument shall not produce a superfluous pulse. When testing, the current circuit shall be
disconnected and the applied voltage of the voltage circuit shall be 115% of the referenced
voltage.
Issue 01 (2018-05-18)
Current range
≤ I < 0.05I
0.01I
n
≤ I ≤ I
0.05I
n max
≤ I < 0.1I
0.02I
n
≤ I ≤ I
0.1I
n max
I : Secondary rated current of the current transformer
n
I : calibrated current of energy meter
b
L: inductive; C: capacitive;
Current range
0.05In ≤ I ≤ Imax
0.1In ≤ I ≤ Imax
In: Secondary rated current of the current transformer
Ib: calibrated current of energy meter
L: inductive; C: capacitive;
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Power factor
1
n
1
0.5L, 0.8C
n
0.5L, 0.8C
Power factor
1
0.5 L
A Technical Specifications
The limited value
of percentage
error towards
various grade of
instruments
± 1.5
± 1.0
± 1.5
± 1.0
The limited value
of percentage
error towards
various grade of
instruments
± 2.0
± 2.0
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