12
Connecting Inlet Power, Input and Output Signals
3.2
Low DC, Power Supply Inlet
The Low DC supply accepts 22 Vdc to 67 Vdc ONLY (
<
30 VA typical), and uses the same three-
terminal inlet connector as the universal supply. This low DC only power inlet module can be
located in either supply location labeled
POWER A
or
POWER B
on the rear panel, and operates
from common low voltage battery systems, including 24 Vdc and 48 Vdc.
Figure 3.2: Low DC Power Supply Inlet Description
DC+ DC- GND
22-67 VDC
<30W TYPICAL
DC ONLY
3.2.1
Low DC: Connecting Inlet Power
The power inlet connector plug has three terminals. Strip the inlet wire 1/4 in and DO NOT TIN
the bare wire with solder. Insert the positive lead into the DC+ terminal, the negative lead into
the DC- terminal and the ground lead into the GND terminal, and tighten the set screws clockwise.
When wiring station batteries to this power supply, make sure to first connect an earth ground
wire to the station ground. After connecting a ground wire, connect the positive and negative leads
to the appropriate battery terminals. Note that the clock is energized when you connect the power
connector plug to the clock, as there is no power switch.
3.2.2
Surge Withstand Protection
Both the Universal and Low DC power supplies provide input surge withstand protection (SWC)
for compliance with ANSI C37.90-1 and IEC 801-4.
3.3
Power Supply Fuses, Types and Ratings
Use the fuse table below for identifying the correct fuse for your power supply.
Power Supply
Fuse Part No.
Fuse Specifications
Size, diameter
×
length
Universal
FU0003001
3.15A, 500V, Time Lag, no leads
5 mm
×
20 mm
Low DC Only
FU0003100
8.0A, 500V, Time Lag, no leads
5 mm
×
20 mm
Table 3.1: Fuse Chart
3.3.1
Replacing Fuses
The fuse compartment is located on the left side of each inlet connector. Fuses for power supply A
and B are located in separate compartments. To check or replace each fuse, first disconnect inlet
Содержание 1201B
Страница 4: ...iv ...
Страница 153: ...B 7 Four Fiber Optic Outputs 135 Figure B 4 Jumper Locations ...
Страница 155: ...B 8 8 Channel High Drive IRIG B Amplifier 137 Figure B 5 8 High Drive Outputs Jumper Locations ...
Страница 171: ...B 10 Four Additional Outputs and Dry Contacts 25 50 Vdc 153 Figure B 7 Option Connector Signal Locations ...
Страница 222: ...Appendix E Statement of Compliance The following page is a statement of compliance that includes Model 1201B and 1201C ...