Percentage Error; Start; Defluction - Huawei DDSU666-H User Manual

DDSU666-H Smart Power Sensor
User Manual

4.2.2 Percentage error

Table 4-3 The percentage error of the sensor cannot exceed the following corresponding limited
value
Current value
Direct connect
0.05 Ib ≤ I ＜0.1 Ib
0.1 Ib ≤ I ≤ I
max
0.1 Ib ≤ I ＜0.2 Ib
0.2 Ib ≤ I ≤ I
max
When users has special requirement
0.2 Ib ≤ I ≤ I
max

4.2.3 Start

Table 4-4 Under the referenced voltage and Table A-1, the sensor starts and continuously metering
the electrical energy
Sensor
Direct connect
Via transformer

4.2.4 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.
The shortest testing time
Issue 02 (2021-03-01)
Via transformer
0.02 I ≤ I ＜0.05 I
n
0.05 I ≤ I ≤ I
n max
0.05 I ≤ I ＜0.1 I
n
0.1 I ≤ I ≤ I
n max
0.1 I ≤ I ≤ I
n max
Energy meter grade
Class 1
0.004I
b
0.002 Ib
Copyright © Huawei Technologies Co., Ltd.
Power
factor
1
n
1
0.5 L
n
0.8 C
0.5 L
0.8 C
0.25 L
0.5 C
:
4 Technical Specifications
The percentage error
limitation of various grade
instruments
Class 1
±1.5
±1.0
±1.5
±1.5
±1.0
±1.0
±3.5
±2.5
Power factor
1
15