functional module |
serial number |
Function point |
Function point description |
Intelligent AC multi-channel watt-hour meter |
Real-time measurement |
1 |
phase voltage |
Phase voltage: Ua, Ub, Uc |
√ |
2 |
line voltage |
Line voltage: Uab, Ubc, Uca |
√ |
3 |
Voltage sequence component |
Voltage sequence components: U1, U2, U0 |
√ |
4 |
phase current |
Phase current: Ia, Ib, Ic |
√ |
6 |
active power |
Active power: Pa, Pb, Pc, p. |
√ |
7 |
wattless power |
Reactive power: Qa, Qb, Qc and Q. |
√ |
8 |
apparent power |
Apparent power: Sa, Sb, Sc, s |
√ |
9 |
Power factor |
Power factor: Pfa, Pfb, Pfc, Pf |
√ |
10 |
phase position |
Voltage/current: ∠Ua, ∠Ub, ∠Uc, ∠Ia, ∠Ib, ∠Ic |
√ |
11 |
frequency |
System frequency: f |
√ |
Electricity measurement |
12 |
Active power |
Split-phase and combined-phase bidirectional active energy |
√ |
13 |
Reactive power |
Split-phase and combined-phase bidirectional reactive power |
√ |
14 |
Apparent electric degree |
Split-phase and close-phase are in electric energy. |
√ |
freeze |
15 |
Minute freezing |
Freeze once at 15: 00 on the hour, with a maximum of 5,000 frozen items. |
√ |
16 |
Daily freezing |
Freeze once at 0 o'clock, with a maximum of 1000 frozen items. |
√ |
17 |
Monthly freezing |
Freeze once a month, with a maximum of 24 freezes. |
√ |
Power quality |
18 |
Harmonic content |
The harmonic content of three-phase voltage and current is 2~31 times. |
√ |
19 |
Harmonic distortion rate |
Total, odd and even harmonic distortion rate |
√ |
20 |
imbalance/ loss of balance |
Unbalanced voltage and current |
√ |
incident record |
21 |
SOE record |
It has 500 SOE recording functions, including alarm power failure, etc., with time scale recording. |
√ |
22 |
Maximum record |
The maximum and minimum values of relevant parameters (voltage, current, active power, reactive power, apparent power, power factor, frequency and demand) can be counted in real time, and recorded with time scales. |
○ |
clock |
23 |
clock |
Accurate clock with hardware |
√ |
communication interface |
24 |
RS485 communication |
Standard 1 RS485 communication, supporting MODBUS-RTU protocol; Support online upgrade program through RS485 interface. |
√ |
25 |
4G communication |
Support MQTT protocol |
√ |
Current transformer |
26 |
External current transformer |
Branch 300A~100mA transformer |
√ |
Note: "√" marks this function as standard, and "○" indicates that this function is optional. |