User`s manual

2 RX3i Power Sync and Measurement System
GFK-2748
Specifications
PSM Module Power Requirements
Backplane Power Consumption
400 mA max. at 5 VDC
Total Power Dissipation
2.0 W max.
Isolation from Backplane
1500 VDC
Maximum number of PSM modules per
RX3i system
No restrictions, as long as the power supply has sufficient capacity
Sync Relay contacts
Two isolated relay outputs
General purpose:
125 VAC / 125 VDC maximum at 1 amp
Lamp duty:
125 VAC / 125 VDC maximum at 1 amp
Pilot duty:
125 VAC / 125 VDC maximum at 0.35 amp
Measurement Specifications
Three voltage inputs per grid
All voltage data is scaled in 0.1 VAC units.
Impedance:
>1 MΩ
Range
Low range
High range
45–150 VAC RMS (120VAC nominal)
120–690 VAC RMS (600VAC CAT IV; 690 VAC CAT III)
Frequency
30–70 Hz
Four current inputs per grid
All current data is scaled in 0.001 Amp units.
Impedance
<5 milliohms
Range
0–5 A RMS (5 A nominal)
Frequency
30–70 Hz
Phase difference between grids:
±180
O
Measurement Accuracy
1
Voltage
0.2%
Current
0.2%
kW, kVAR, kVA
0.4%
kWH, kVARH, kVAH
0.4%
Power factor
1%
Frequency
0.01 Hz
Phase angle
0.1
O
Terminal Assembly Input Terminal Ratings
Current
15 Amps continuous maximum
Voltage
690 VAC RMS
Sync Relay contacts
150 VAC/VDC at 1 Amp Resistive, maximum
Note: Actual contact ratings depend on load type. See “Sync Relay
contacts” on page 2.
RX3i CPU Memory Requirement for Automatic Data Exchange
%I
80 bits
%Q
32 bits
%AI
64 words
%AQ
2 words
1
In the presence of severe conducted RF interference (IEC 61000-4-6, 10 volts) accuracy could be degraded by ±2% of full
scale.