V-RTU2000 Series
Chapter 10 - Analog AC Power Input Unit
Veesta - Remote Terminal Unit
Technical Specification Manual
Page 56 of 90
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Chapter 10 - Analog AC Power Input Unit
10.1 General
The Analog AC Power Input Unit of V-RTU2000 Series is designed
with modules named ACPM VR-2749 models.
10.2 ACPM Card
The design concept of V-RTU2000 Series ACPM Model VR-2749A
card was based on Microprocessor. It uses 12 bit A/D to current,
Watt and etc module cards for power related parameters
measurement of RTU. Its back side of RS-485 communication port is
using the protocol of RTU Local I/O, while the frond RS-232
communication port is for maintenance only. And this RS-232 port is
easy accessed and programmed by PC Tool to setup the parameters
and records.
The ACPM Card Features:
3-phase current input : 1A or 5A
3-phase voltage source input
True RMS conversion
For power related parameters
32 sample point per cycle
Field programmable PT/CT ratio
Fault current detection
Voltage synchronism check
Harmonics analysis up to 15th
Data updating interval : 1 second
Communication port : RS-485 + RS-232
Completely modulated and plug-in type cards which is easy to
maintain
