DK40i Configuration
Worksheet 2 – System Power Factor Check
Strata DK I&M 6/00
2-17
DK40i Conf
iguration
Worksheet 2 – System Power Factor Check
The DK power supply was engineered for maximum cost efficiency to provide power for the most
configurations. Because of this design, some power limitations exist when using old electronic-
type telephones, telephone option hardware, or newer PCBs, such as RWIU, TBSU, RBSU/RBSS.
Telephone/Device PFs
The power supply of each KSU supplies a limited amount of power. For each KSU, calculate the
total Telephone/Device Power Factor (PF) and add it to
for PCB
quantity and type.)
The TBSU, RBSU/RBSS and RWIU PCBs require more power from +5VDC than other PCBs;
therefore, it is necessary to calculate the +5VDC and -24VDC PF on DK40i.
Important!
A system PF check must be performed for
all
configurations. See
power 5VDC and -24VDC PFs for the DK40i system.
Note
AC current limitation by National Electric Code.
Important!
The -24VDC system PF is Expansion KSU PCBs and all telephone/options
connected to the Base and Expansion KSUs. Base KSU option PCBs are already
covered for -24VDC PF.
Table 2-19
DK40i System Power Factor
Power Supply
Max+5VDC PF
Max -24VDC PF
AC Input Current
TPSU16A
14
39
1.8A
Summary of Contents for Strata AirLink DK40i
Page 22: ...Introduction Related Documents Media xx Strata DK I M 6 00 ...
Page 48: ...DK14 Installation DK14 Wiring Diagrams 1 26 Strata DK I M 6 00 ...
Page 220: ...DK424 Installation Remote Cabinet Installation Instructions 5 68 Strata DK I M 6 00 ...
Page 262: ...DK424i Configuration Primary Reserve Power Cabinet Hardware 6 42 Strata DK I M 6 00 ...
Page 450: ...Universal Slot PCB Wiring Option Interface PCB Wiring Diagrams 10 42 Strata DK I M 6 00 ...
Page 592: ...Peripheral Installation Enhanced 911 Service E911 12 84 Strata DK I M 6 00 ...
Page 616: ...ACD Installation Spectrum Electronic Wall Boards 13 24 Strata DK I M 6 00 ...
Page 634: ...Fault Finding Fault Isolation Flowcharts 14 18 Strata DK I M 6 00 ...
Page 704: ...ISDN Interfaces ISDN Disconnect Cause Code 16 54 Strata DK I M 6 00 ...