JIAXING EASTRON ELECTRONIC INSTRUMENTS CO.,LTD.
TEL:0086-573-83698881
83698882
FAX: 0086-573-83698883
WEB:
www.eastrongroup.com
Email:
Add: No.1369. Chengnan Road, Nanhu, Jiaxing, Zhejiang, China 314001.
- 23 -
and Single-phase 2-wire unbalanced. Line frequency measured from L1 voltage or L3 voltage.
Three current inputs (six physical terminals) with 2·5mm2 stranded wire capacity for connection of external
CTs. Nominal rated input current 5A or 1A a.c. Rms.
5.3
5.3
5.3
5.3 Accuracy
Accuracy
Accuracy
Accuracy
Voltage
0·5% of range maximum
Current
0·5% of nominal
Frequency
0·2% of mid-frequency
Power factor
1% of unity (0.01)
Active power (W)
±1% of range maximum
Reactive power (VAr)
±2% of range maximum
Apparent power (VA)
±1% of range maximum
Active energy (Wh)
Class 1 IEC 62053-21
Reactive energy (VARh)
±2% of range maximum
Total harmonic distortion
1% up to 31st harmonic
Temperature co-efficient
Voltage and current = 0.013%/°C typical
Active energy = 0·018%/°C, typical
Response time to step input
1s, typical, to >99% of final reading, at 50 Hz.
5.4
5.4
5.4
5.4 Auxiliary
Auxiliary
Auxiliary
Auxiliary Supply
Supply
Supply
Supply
Two-way fixed connector with 2·5mm2 stranded wire capacity.
85 to 275V a.c. 50/60Hz ±10% or 120V to 380V d.c. ±20%. Consumption < 10W.
5.5
5.5
5.5
5.5 Interfaces
Interfaces
Interfaces
Interfaces for
for
for
for External
External
External
External Monitoring
Monitoring
Monitoring
Monitoring
Three interfaces are provided:
�
an RS-485 communication channel that can be programmed for Modbus RTU protocol
�
an relay output indicating real-time measured energy.(configurable)
�
an pulse output 3200imp/kWh (not configurable)
The Modbus configuration (Baud rate etc.) and the pulse relay output assignments (kW/kVArh,
import/export etc.) are configured through the Set-up screens.
5.5.1
5.5.1
5.5.1
5.5.1 Pulse
Pulse
Pulse
Pulse Relay
Relay
Relay
Relay Output
Output
Output
Output
The pulse relay output can be set to generate pulses to represent kWh or kVArh.
Rate
Rate
Rate
Rate
can be set to generate 1 pulse per:
0.01 = 10 Wh/VArh
0.1 = 100 Wh/VArh
1 = 1 kWh/kVArh
10 = 10 kWh/kVArh
100 = 100 kWh/kVArh
Pulse
Pulse
Pulse
Pulse width
width
width
width
200/100/60 ms.
Relay
Relay
Relay
Relay Rating
Rating
Rating
Rating
240V ac 50mA
