Kingfisher Plus+ Hardware Manual
Calculating Power Requirements
This chapter aims to assist you in selecting an appropriate power supply module/s and
backup battery for your RTU. It also allows the power requirements of the RTU to be
checked to ensure the power supplies are not overloaded.
Note that there is an Excel
™
spreadsheet that can perform the following calculations
automatically available from “
Kingfisher RTU Power Budget, Backup Battery and Solar Panel
”.
3.4.1 Total Current Consumption
PS-22 Typical current consumption at various DC voltages (mA)
Input Voltage
20 V
40 V
60 V
Basic Module, no options
34
20
19
24 V
DC
Aux Converter Installed
49
27
25
PS-12 Typical efficiency at various AC supply voltages
Input Voltage
100 V
170 V
240 V
Efficiency
85%
87%
88%
Note
: No DC-DC converter installed.
Communications/Processor Modules current consumption (mA at 13.8 V
DC
)
Item
CP-12 / MC-12
CP-21
CP-30 / MC-31
Basic Module, no options
70
147
135
PC-1 Typical current consumption (mA at 13.8 V
DC
)
Bare Module
24 V Aux Converter
Installed
Option S Board
Installed
Option R Board
Installed
Option P Board
Installed
54
+53
59
62
59
For Communications Option Boards please refer to the
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
Page 56