Page 198 of 544
Power supplies
553-3011-100
Standard 14.00
January 2002
AC power supply features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Voltage . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Over-voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Under-voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Introduction
This chapter describes the Option 11C AC/DC power supplies (NTAK04,
NTAK05, NTDK72, and NTDK78) reserve power requirements, and the
operation of the Power Fail Transfer Unit (PFTU). The NTDK15 power
supply for the Option 11C Mini is described on page 204.
Features of the Option 11C power supply
Dimensions and weight
The AC/DC and DC power supplies measure approximately 12.5 inches
(305 mm) high, 5 inches (127 mm) wide and 10 inches (245 mm) deep.
It weighs approximately 12 lb (5.5 kg), while the DC power supply weighs
approximately 8 lb (3.5 kg).
AC/DC power supply features
The NTAK04 and NTDK78 AC/DC power supply has the following features:
•
A current limiting circuit which limits the surge of current on the input
line when the system is first switched on.
•
Accommodates a reserve power system. The system continues to operate
on DC reserve power in case of AC power failure.
Note:
The NTAK04 or NTDK78 AC/DC power supply cannot power up
on battery alone. If the NTAK04 or NTDK78 is powered down while
operating on DC reserve power, then AC power is required to power up
the system.
•
Battery charging for the reserve power system. Charging current in a
worst-case scenario (when Meridian Mail is installed) is 1.0 amp.
•
Power (± 15V) for one attendant console.
•
Generation of a system line transfer signal and power (-52V) for the
Power Fail Transfer Unit (250 MA maximum).
Summary of Contents for Meridian 1 Option 11C Mini
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Page 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Page 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Page 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Page 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Page 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Page 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Page 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Page 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Page 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Page 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Page 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Page 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Page 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Page 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Page 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Page 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Page 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Page 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
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