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37
Technical features
Measurements
35
34
40
Scaling factor: programmable within the whole retransmission
range; it allows the retransmission of all the values within: 0
and 20 mADC, 0 and 10 VDC.
Response time: system variables V, W, VA, var, cos
ϕ
FFT off, filter off: 900ms; FFT on, filter on: 1.4s;
variables THD-V, THD-A Filter off: 3s;
Ripple:
≤
1% acc. to IEC 60688-1, EN 60688-1.
Load: 20 mADC:
≤
500 Ohm; 10 VDC:
≥
10 kOhm.
Insulation: by means of optocouplers, 2000 Vrms between
output and measuring input, 2000 Vrms between output and
power supply input.
RS422/RS485 (on request).
Module AR2950.
Type: Bidirectional multidrop (static and dynamic variables).
Connections: 2 or 4 wires, max. distance 1200m, termina-
tion directly on the instrument.
Addresses: 255, key-pad selectable.
Protocol: MODBUS/JBUS.
Data (bidirectional): dynamic (reading only); system and
phase variable: see “display” on page 39.
Static (writing only): all the configuration parameters, en-
ergy reset, activation of static output; energy storing
(EEPROM) max. 19.999.999kWh/kvarh.
Data format: 1 start bit; 8 data bit; no parity, 1 stop bit.
Baud-rate: 9600 bit/s.
Insulation: by means of optocouplers, 2000 Vrms between
output and measuring inputs, 2000 Vrms between output and
power supply input.
Digital outputs (on request).
Module AO2900.
Digital outputs can be used as alarm, for energy retransmission
or remote static outputs.
Three operating modes are selectable:
- dual pulse output (kWh and kvarh);
