3
Rear case IP20
Environm
ent
condition
Working environment
-25
～
70
℃
Storage environment
-40
～
85
℃
Rated humidity
5
～
93%
（
no condensation at 50
℃
）
Pollution degree
2
Measurement type
III
Insulation
Between signal, power supply, output terminal
and case resistance > 100MΩ
Power supply and input > AC 3kV
Power supply and output > AC 3kV
Input and output> AC 2kV
EMC
III
2.4 Energy metering
Detailed energy metering function is as follows,
- Total bi-directional energy
- Bi-directional energy of each circuit
Min. resolution is 0.01kWh. Energy display range is 99999999000 kWh (99.9 billion kWh). User can clear energy data
by manual according to practical requirements after inputting correct password.
2.5 Max./min. value and demand
Meter can record max./min. value of voltage, current and power, and save these data of present month, last month
and the month before last month. Please refer to communication list for detailed recording parameters.
Meter can measure the demand of current and power in each circuit. Max./min. value and demand only can be read
through communication, but not can be shown on the panel of meter.
2.6 Digital input
This meter supports 4 digital inputs. The digital input uses the method of dry contact input. DC 15V operation power
supply is provided inside the meter without the need for external power supply. It can be used to monitor closing/opening
status, handcart position, operation status of capacitance compensation cabinet, etc. The status information can be
transmitted remotely to monitoring system through communication interface so as to realize automatic opening and
closing with the remote/alarm relay function.
2.7 Relay output
The meter supports two relay outputs.
The relay output has four different work modes: off, remote control and off-limit alarm.
Off: relay output function is off, and the status relay returns to defaulted status.
Remote control: to receive PC and PLC command, and to control the closing and opening of relay.
Off-
limit alarm: set corresponding relay as “Off-limit alarm” mode, set alarm electrical variable in “Mode” item, set
alarm de
lay time in “Delay” item, set alarm limit percentage of electrical variable in “Value” item, set hysteresis value
percentage in “Recover” item.
