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計測機器 Autometers Systems A-400PのPDF プログラミングとインストールのパンフレットをオンラインで閲覧またはダウンロードできます。Autometers Systems A-400P 17 ページ。 Mid approved sgs.uk appendix b and d, measures kwh, kvarh, kvar,pf,hz, max demand, rs 485 modbus autometers v6 protocol, two pulse outputs, bi- directional measurement for import and export, back light lcd for full viewing angles, available as 1 phase 2 w
ページを印刷する5. Specification
5.1 Measured Parameters
The unit can monitor and display the following parameters of a single phase two wire(1p2w),
three phase three wire(3p3w) or four phase four wire(3p4w) system.
5.1.1 Voltage and Current
Phase to neutral voltages 100 to 289V a.c. (not for 3p3w supplies).
Voltages between phases 173 to 500V a.c.
Percentage total voltage harmonic distortion (THD%) for each phase to N ( not for 3p3w supplies).
Percentage voltage THD% between phases (three phase supplies only).
Current THD% for each phase
5.1.2 Power factor and Frequency and Maximum Demand
Frequency in Hz
Instantaneous power:
Power 0 to 99999 W
Reactive power 0 to 99999 VAr
Volt-amps 0 to 99999 VA
Maximum demanded power since last Demand reset Power factor
Maximum neutral demand current, since the last Demand reset (for three phase supplies only)
5.1.3 Energy Measurements
Imported/Exported active energy........
Imported/Exported reactive energy.....
Total active energy................
Total reactive energy............
5.2 Measured Inputs
2 Voltage inputs through 4-way fixed connector with 25mm stranded wire capacity. single phase
two wire (1 p2w), three phase three wire (3p3w) or three phase four wire (3p4w) unbalanced.
Line frequency measured from L 1 voltage or L3 voltage.
5.3 Interfaces for External Monitoring
Three interfaces are provided:
RS 485 communication channel that can be programmed for Modbus RTU protocol
Relay output indicating real-time measured energy (configurable)
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.
5.3.1 Pulse Output
The pulse output can be set to generate pulses to represent kWh or kVArh.
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 width 200/100/60 ms.
Relay Rating 240V ac 50mA
11
0 to 9999999.9 kWh
0 to 9999999.9 kVArh
0 to 9999999.9 kWh
0 to 9999999.9 kVArh
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