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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
4.2
DC 24V/DC 5V & 24V L-PS Card
4.2.1
VR-2707B Specifications
1
Input Voltage Range
2.
Output Voltage
3.
Output Power
4.
Output Short Circuit
Protection
5.
Output Over-Voltage
Protection
6.
Efficiency
7.
Isolation - Input to Output :
8.
Surge Withstand Capability :
(SWC)
9.
Common Mode Voltage
10.
Card Dimension
11.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
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DC 24V/DC 5V & 24V PS Card is used to convert the field power of
DC 24V to DC 5V for supplying the working power to the card under
through backplane also supporting another set of DC 24V supplying
power to DO/HDO card under through backplane as well. The card is
designed with an isolation "power failure detection circuit". Upon
detecting that the input power is lower than the set value, it will send
out Power Fail (/PF) signal to other cards through backplane.
:
24V to 75V DC
:
5V ±0.1V DC
24V ±1V DC (Internal Used)
:
10W (DC 5V)
3W (DC 24V)
:
Continuous (Auto-Restart)
:
Clamping at 6.2V DC
:
> = 80%
DC 1800V, AC 1500V
ANSI/IEEE C37.90.1-1989
(3KV Oscillatory Test, 5KV Fast Transient Test)
:
250V DC (Min.)
:
160mm * 100mm
-25°C to 70°C
:
-40°C to 85°C
:
10% to 95% non-condensing
Chapter 4 - Power Unit
Page 40 of 90
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