DK424 Configuration
Worksheet 5 – System Power Factor Check
4-34
Strata DK I&M 6/00
Worksheet 5 – System Power Factor Check
The Strata 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 and/or telephone option hardware.
For example, only 24 3000-series telephones can be installed in a cabinet. Each telephone and
PCB has a negative Power Factor (PF) and the RPSU424 or RPSU280 power supply have a
positive PF (+65). The sum of the telephones’ PFs and PCBs connected to a signal cabinet must
not exceed –65. In the case of +5VDC, the power factor must not exceed 25.
The sum of the calculated cabinet PFs must not exceed the values provided on
shows the PF for PCBs and the RPSU280. PF numbers for telephones and devices are shown
on the following page.
Note
The maximum number of RWIUs must not exceed one for the Base Cabinet and two for
the Expansion Cabinets.
Table 4-23
PCB and Power Supply Power Factors
PCB Type
+5VDC
-24VDC
Notes
IMDU
0.1
0.16
PCOU1, 2
1.9
2.0
PDKU1, 2
0.8
0.3
With 8 DKTs.
PEKU
1.6
0.7
With 8 EKTs.
PEPU
1.1
6.5
PESU
1.5
0.5
With 4 EKTs and 4 SLTs.
PIOU
2.0
6.5
PIOU2
1.1
6.5
PIOUS
0.75
4.0
Power Supply RPSU280
or RPSU424
25.0
65.0
R40S1A
0.0
2.8
Does not use +5VDC.
RATU
1.7
0.3
RBSS1A
0.6
0.3
RBSS2A
0.0
0.3
Does not use +5VDC.
RBSU + RBSS
3.1
0.3
RBSU1A
2.5
1.0
RBSU2A
0.0
1.0
Does not use +5VDC.
RBUS1A
0.0
0.3
Does not use +5VDC.
RBUU1A
0.0
1.0
Does not use +5VDC.
RCIS1A
0.3
0.1
RCIU1A/2A
0.7
0.2
RCIU2
0.2
RCMS1A
0.6
0.3
RCOS1A/2A
1.7
2.0
RCOU (4 CO)
2.5
2.0
RCOU + RCOS (8 CO)
3.6
4.0
RCOU1A/2A
1.9
2.0
RCTUA
2.0
1.0
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 ...