2
1.3 Model selection
SFERE720A
SFERE720B
Appearance
and accuracy
Display mode
LCD
LCD
Installation mode
Panel
mounting
Panel
mounting
Active energy accuracy
0.5S
0.5S
Reactive energy accuracy
2S
2S
Real-time
measurement
U/I/P/Q/S/PF/F
▇
▇
Demand
▇
▇
Neutral current
-
▇
Energy
metering
Bi-directional energy
▇
▇
Four-quadrant reactive energy
▇
▇
Spare energy
-
▇
Tariff energy
-
▇
Power quality
Voltage/current THD
-
▇
Sub-harmonic content
-
2
nd
- 51
st
Sequence
component
and
phase
position of voltage and current
-
▇
Voltage and current unbalance
-
▇
Crest factor, current K factor
-
▇
Data record
Meter/load running time
▇
▇
Demand/max./min. Value record
-
▇
Off-limit record
-
▇
SOE event record
-
▇
Input
and
output
Energy pulse output
▇
▇
RS485 communication interface
▇
▇
Digital input
-
▇
Relay output
-
▇
Note:
▇
Yes;
— No