Page 204 of 544
Power supplies
553-3011-100
Standard 14.00
January 2002
Uninterrupted Power Supply (UPS)
A 750VA Uninterrupted Power Supply (UPS) may be connected to AC-
powered systems in order to provide a continuous supply of AC-power.
If two cabinets are equipped, two 750VA UPSs or one 1.5KVA UPS can be
used.
Battery charging in AC-powered systems
During normal operation, the AC/DC power supply (NTAK04 or NTDK78)
provides a constant float voltage to the reserve batteries. This charger voltage
is not adjustable and will not provide equalization voltages. See Table 65.
Reserve time
Table 66 outlines the Ampere hours required (AHR) per cabinet during a
power failure. The reserve times are based on nominal load for a typical
installation.
Features of the Option 11C Mini power supply
This section describes the Option 11C NTDK15 Mini AC power supply.
Table 65
NTAK04 or NTDK78 AC/DC power interface to reserve power systems
Minimum
Nominal
Maximum
Float Voltage
52.95 Volts
53.6 Volts
54.50 Volts
Charge Current
a
a. The charge current available to the reserve batteries depends on the system configuration and the line size.
1.0 Amps
—
7.0 Amps
Table 66
Reserve time
Duration of Power Failure
AHRs required per Option 11C cabinet
30 – 40 minutes
6 AHR
1.5 – 2 hours
12 AHR
3 – 4 hours
25 AHR
Содержание Meridian 1 Option 11C Mini
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Страница 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Страница 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Страница 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Страница 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Страница 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Страница 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Страница 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Страница 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Страница 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Страница 312: ...Page 312 of 544 M3900 telephone series 553 3011 100 Standard 14 00 January 2002 Figure 40 M3901 Figure 41 M3902 ...
Страница 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Страница 368: ...Page 368 of 544 NT8D02 and NTDK16 Digital Line Cards 553 3011 100 Standard 14 00 January 2002 Figure 55 NTDK16 DLC ...
Страница 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Страница 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Страница 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Страница 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Страница 438: ...Page 438 of 544 NT1R20 Off Premise Station OPS analog line card 553 3011 100 Standard 14 00 January 2002 ...
Страница 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Страница 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Страница 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Страница 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
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