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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
10.2.1 VR-2749A Specifications
1.
Input Channel
2.
Input Range
3.
Accuracy
4.
Input burden
5.
Communication Port
6.
Configuration
7.
Insulation ability
8.
Power Requirement
9.
Card Dimension
10.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
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Chapter 10 - Analog AC Power Input Unit
:
3-AC current (Ia, Ib, Ic)
3-AC voltage (Va, Vb, Vc)
:
Current : 1A of rating (CT)
AFx : 16 x CT (fault current)
Voltage : 0-5V
Frequency : 50/60 ±3Hz
:
Voltage : 0.5% fs
Current : 0.5% fs (0.01-1.3 x CT)
1% fs (1.3-16 x CT)
Timing : at ≧ 1.00 x pickup
±3% of trip time or ±20ms
W/Var/VA/PF : 2% fs
WH/VarH : 5% rd
Phase angle measuring error ≦ 2˚
Current : ＜0.2VA
:
Voltage : ≧ 1MΩ
:
Data rate RS-232 : 9600 bps
RS-485 : 62.5K bps
RS-232 + RS-485 (RTU local I/O)
:
Fault current detection (mode 0)
One fault-based-curve
16 set-point groups (Ip-Pu,Mp,Ig-Pu, Mg)
Fault current detection (mode 1)
User definable
4-point phase time over-current curve
4-point ground time over-current curve
:
Internal circuit against 3000Vdc analog input
:
+24V DC ±20%, 100mA
:
160mm * 100mm
-25°C to 70°C
:
-40°C to 85°C
:
10% to 95% non-condensing
(whichever is greater)
Page 57 of 90
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