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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
9.2.1
VR-2745 Specifications
1.
Input Channel
2.
Input Range
3.
Accuracy
4.
Sampling Rate
5.
Input Burden
6.
Fault Current Detection
7.
Communication Port
8.
Insulation ability
9.
Impulse Test
10.
Power Requirement
11.
Card Dimension
12.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
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Chapter 9 - Analog AC Input Unit
:
4 sets of independent cuurent
:
Current: 0-1A or 0-5A
AFx = 20 x CT (fault current detection)
Frequency : 50/60 ±3Hz
:
0.5% fs (0.01 - 1.3 x CT)
0.8% fs (1.2 - 20 x CT)
Phase angle measuring error ≦ 2˚
:
32 points for each cycle
:
< 0.2 VA / phase
:
Mode 0: One fault-based-curved, 16 set-point
group
Mode 1: User definable, 4-point phase & ground
time over-current curve
:
Data rate RS-232 : 9600 bps
RS-485 : 62.5K bps
:
Internal circuit against 3000Vdc analog input
:
ANSI/IEEE c37.90.1-2002 (2.5KV) SWC
IEC 61000-4-12 classⅢ SWC
IEC 61000-4-4 classⅣ SWC
IEC 61000-4-5 classⅣ Impulse
:
+5V DC ±5%, 150mA
:
160mm * 100mm
-25°C to 70°C
:
-40°C to 85°C
:
10% to 95% non-condensing
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