Toshiba Strata DK 280 Installation Manual page 44

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Worksheet 4
Power Factor (PF)
Maximum 48 DKT 1000 or 2000 or EKT6500 stations per cabinet
Maximum 27 DKTs with any combination of PDIU-D12 and RPCI-DI in base cabinet or 28 in expansion cabinets.
Maximum 120 telephones can be paged simultaneously (this is controlled by system software)
2. Calculate Power Factor (PF) for the four cabinet examples (from page 1-25) starting with Chart 2.
Use the Power Factors provided in following Tables 1-8 (Example), 1-9 (Example), and 1-10 (Example), along
with Charts 2, 3 and 4 that follow to check that the system configuration does not exceed the specified power
factor limits.
3. Power Factor Examples for two other example system configurations:
-Cabinet
1
System Configuration:
40-Digital telephones
I
Digital Telephone
OK Less than 65
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1-32
System Power Factor Check
System Configuration:
220-Digital telephones
16-Loop start lines
Qty PF
I
I
I I I
2 1.9
PDKU
RATU
Digital Telephone (first 120, PF = 1
Digital Telephone (last 120, PF
Attendant Console
6-Cabinets
4-Attendant consoles
Equipment Type
.O)
0.6)
Total PF
I I I
2
28 8.4
4 30.0
120 120.0
100 60.0
104 52.0
4 16.0
296.6
January 1996