3-
10
LPS-D Line Protection System
GE Power Management
3.3 PRINTED CIRCUIT BOARD MODULES
3 HARDWARE DESCRIPTION
3
3.3.8 DIGITAL OUTPUT / POWER SUPPLY BOARD
The Digital Outputs, which are programmable are located on this board. The logic to select and write a digital
output is located on this board. The power supply circuitry is also contained on this board.
Figure 3–9 is a block diagram of the Digital Output/Power Supply board.
Figure 3–8: BLOCK DIAGRAM OF THE DIGITAL OUPUT / POWER SUPPLY
TRIP
RELAY
RELAY
LATCH
RELAY
LATCH
POWER SUPPLY
5 V 20 mA
CHANNEL INTERFACE
COMPARATOR
TRANSCEIVER
DECODER
COMPARATOR
+5V
+5V
+12V
±12VANA
+5VISO
+12VISO
ADDRESS
DATA
Содержание LPS-D
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