Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 System Description Manual

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Site Requirements 
51 Cabinet Power Requirements 
Table 9. Cabinet AC Power Sources
Cabinet Style and Power 
Distribution Unit Power Sources Power Input Receptacles
Compact Modular 
Cabinet AC power 
supply 
(650A)Single phase 120 VAC 
with neutral
Single phase 240 VAC 
with neutral120 VAC, 60 Hz NEMA 5-15R
240 VAC, 50 Hz IEC 320
Japan installs use country 
specific receptacles for 100 and 
200 VAC, 50/60 Hz 
Multi-Carrier Cabinet
AC power distribution 
(J58890CE-1 and 
J58890CE-2) Single phase 120 VAC 
with neutral 
Single phase 240 VAC 
with neutral, or single 
phase of 3-phase, 208 
VAC with neutral120 VAC, 60 Hz NEMA 
5-50R
208/240 VAC, 60 Hz NEMA 
L14-30R 
Multi-Carrier Cabinet
AC Power distribution 
(J58890CH-1)Single phase 176-264 
VAC 200-240 Volts, 50-60 Hz NEMA 
L6-30R. Installations outside the 
United States require a 
receptacle suitable for use in the 
country of installation. 
Single-Carrier Cabinet
AC power supply 
(1217A)Single phase 120 VAC 
with neutral
Single phase of 220 VAC 
or 
Single phase of 240 VAC120 VAC, 60 Hz NEMA 5-20R or 
5-15R
220/240 VAC at country-specific 
receptacle
Continued on next page 
						

							Site Requirements 
52 Cabinet Power Requirements 
DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
DC Power
DC-powered cabinets containing a J58890CF power distribution unit require a -42.5 to 
-56 VDC source at up to 75 A. Refer to Multi-Carrier Cabinet Power system on page 43.
Refer to ‘‘Single-Carrier Cabinet Power Systems’’ on page 65 for DC-power information.
For DEFINITY Wireless Business System power requirements, refer to Appendix A.
AC and DC Load Center Circuit Breakers
The circuit breaker sizes for all AC- and DC-powered cabinets are listed in Ta b l e  1 0 and 
Table 11.
.
Table 10. Circuit Breakers for AC-Powered Cabinets
Cabinet Type Circuit Breaker Size
Compact Modular Cabinet (120 VAC) 60 Hz 15 A
Compact Modular Cabinet (240 VAC) 50 Hz 10 A
Multi-Carrier Cabinet (120 VAC) 60 Hz 50 A
Multi-Carrier Cabinet (208 VAC) 60 Hz 30 A
Multi-Carrier Cabinet (240 VAC) 60 Hz 30 A
Multi-Carrier Cabinet (200-240 VAC) 50-60 Hz 30 A
Single-Carrier Cabinet (120 VAC) 15 or 20 A
Auxiliary cabinet (120 VAC) 20 A
Table 11. Circuit Breakers for DC-Powered Cabinets
Cabinet Type (–48 VDC) Circuit Breaker Size
Multi-Carrier Cabinet 75 A
Single-Carrier Cabinet 25 A
Auxiliary cabinet 20 A 
						

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Site Requirements 
53 Cabinet Power Requirements 
Multi-Carrier Cabinet Power System
These power systems consist of an AC- or DC-power distribution unit in the bottom of 
each cabinet and cabling to distribute output voltages to power unit circuit packs in the 
carriers. These power systems also consist of power-converter circuit packs in the 
carriers supplying DC- power to the circuit pack slots. Chapter 3 describes the 
AC-version 631DA1 and 631DB1 power units and the DC-version 644A, 645B, and 649A 
power converters.
Table 12 lists the input and output voltages of power unit circuit packs in the carriers of 
Multi-Carrier Cabinets.
AC and DC Power Distribution
A typical AC-power distribution unit for a Multi-Carrier Cabinet contains the circuit 
breakers, ring generator, optional batteries, and optional battery charger. The power 
distribution cables carry 120 VAC during normal operation and 144 VDC from optional 
batteries if AC power fails. Another cable connects 120 VAC to the battery charger.
DC-powered cabinets require a -42.5 to -56 VDC source at up to 75 A. 
Table 12. Power Units in Multi-Carrier Cabinets
Model Inputs Outputs
120 VAC 144VDC -48 VDC +5 VDC 
60 A–5 VDC 
6 A–48 VDC 
8 A
AC 631DA1 yes yes no yes no no
AC 631DB1 yes yes no no yes yes
DC 644A no no yes yes no no
DC 645B no no yes no yes yes
DC 649A no no yes yes yes  10 A 
						

							Site Requirements 
54 Cabinet Power Requirements 
DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
AC Power Distribution
Figure 21 shows an AC Power Distribution Unit and Battery Charger (J58890CE-2 List 15 
or later). This unit sits at the bottom of some Multi-Carrier Cabinets. 
Figure 21. AC Power Distribution Unit (J58890CE-2) (Front)
The AC-Power Distribution Unit contains the following additional components not shown 
in the figure: 
nElectromagnetic Interference (EMI) filter
nAC input fuse
n5 circuit breakers (1 for each carrier)
n20-amp fuses
nSignal connector
n-48 VDC fan power
The optional battery charger (List 11) sits at the bottom of some multicarrier cabinets. See 
Figure 22. 
Circuit
breakers
Ring
generator631DB
power unit
Ring generator
fuse
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							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Site Requirements 
55 Cabinet Power Requirements 
Figure 22. Battery Charger (Optional Part of J58890CE-2) (Front)
The battery charger is used only without an Uninterruptible Power Supply (UPS). The 
charger contains:
nThree 48-VDC batteries for backup power to the cabinet
nA DC-power relay to switch the batteries into the power circuit if a main power 
failure is detected
Circuit Breaker
The circuit breaker protects the AC input power to the cabinet and serves as the main AC 
input disconnect switch. The circuit breaker has 2 poles for 120 VAC or 3 poles for 
208/240 VAC. If a problem develops, the circuit breaker automatically trips (opens) and 
removes the AC power input. 
48-VDC Batteries
The 3 series-connected 48-VDC batteries produce a nominal 144 VDC, fused at 20 A. 
The batteries trickle-charge from the battery charger. 
Battery Charger
When AC power restores after an outage, the battery charger converts a 120 VAC input 
to a DC voltage that recharges the batteries (usually within 24 hours).
BatteriesBattery
charger
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							Site Requirements 
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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
DC Power Relay
This relay disconnects the batteries from a system when using AC power. The relay also 
disconnects the batteries if power fails for more than 10 minutes in a standard reliability 
system, 5 minutes in high and critical reliability systems, and 10 minutes in an expansion 
port network (EPN). This protects the batteries from over-discharging. 
Electromagnetic Interference (EMI) Filters
The EMI filters suppress noise voltage on the AC input line to the unit. 
Ring Generator
The ring generator converts the -48 VDC input to a 67 VAC to 100 VAC, 20 Hz or 25 Hz 
ringing voltage. The analog line circuit packs use this AC voltage output to ring voice 
terminals. The AC outputs route from the ring generator to port carriers, expansion 
control carriers, and control carriers.
Fuses
20-Amp fuses protect the power on each cable going from the AC- Power Distribution 
Unit to power converters in the carriers. 
Figure 23 shows AC power distribution in some Multi-Carrier Cabinets. The DC-power 
distribution cables are on both sides of the cabinet. These cables supply power to each of 
the carriers. The optional battery charger is at the right side of the Power Distribution Unit.
Figure 23. AC Power Distribution in Multi-Carrier Cabinets
3
D position
carrier
Battery
charger
(optional)
E Position
Car r i er
Pow er
distr ibuti on
unit
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							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Site Requirements 
57 Cabinet Power Requirements 
Power Backup
If AC power fails, three 48-VDC batteries power the system for 10 seconds in a PPN 
cabinet, for 15 seconds in an EPN cabinet, and for 10 minutes in the control carrier in a 
standard reliability system. The batteries also supply system power for 5 minutes in the 
control carrier in high and critical reliability systems, and for 10 minutes in the expansion 
control carrier in the A
 position of an EPN cabinet (R7r and later only).
Uninterruptible Power Supply (UPS)
An external, Uninterruptible Power Supply (UPS) provides a longer backup time than 
holdover batteries (holdover times vary from less than 10 minutes to up to 8 hours) and 
can replace the batteries and battery charger. The unit connects from the AC-power 
source to a cabinet’s AC-power cord. If AC power fails, the unit supplies its own AC 
power to the cabinet.
AC Power Distribution Unit (J58890CH-1)
Figure 24 shows a typical AC Power Distribution Unit used in some Multi-Carrier 
Cabinets. The unit sits at the bottom of the cabinet. 
Figure 24. AC Power Distribution Unit (J58890CH-1) (Front)
Ci rcuit
breakers
Recti fier
modules Ring
generator
Ring generator
fuse
Battery
interface unit
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							Site Requirements 
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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Power Backup
There are 2 types of battery assemblies used for power backup: small and large. The 
small batteries are typically located at the center rear of a Multi-Carrier Cabinet. The large 
batteries are typically located inside the battery cabinet.
Small Batteries
The small battery is an 8 AH (Amp-hour) battery fused for short circuit protection and is 
charged by the J58890CH-1. The batteries also contain a thermal sensor that changes 
the charging voltage depending on battery temperature. See Figure 25.
The small batteries provide short-term battery holdover. If AC power fails, 48 VDC 
batteries power the system for 10 seconds in a PPN cabinet, for 15 seconds in an EPN 
cabinet, and for 10 minutes in the control carrier in a standard reliability system. The 
batteries also provide system power for 5 minutes in the control carrier in high and critical 
reliability systems, and for 10 minutes in the expansion control carrier in the A position of 
an EPN cabinet (R7r and later only).
Figure 25. Small Battery Assembly
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Battery
connector 
						

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Site Requirements 
59 Cabinet Power Requirements 
Large Batteries
The large batteries can supply holdover times of 2 to 8 hours, depending on the number 
of batteries. When using large battery holdover, 1 battery cabinet is required per system. 
The 24-cell battery cabinet must have float voltage of 54.2 VDC. The 23-cell battery 
cabinet must have a float voltage of 51.75 VDC. The batteries are circuit breaker 
protected and are charged by the J58890CH-1. 
The batteries also contain a thermal sensor that changes the charging voltage, 
depending on the battery temperature. The batteries provide extended holdover. Battery 
holdover and recharge times for a typical 2500-Watt load are shown in Table 13. A typical 
large battery cabinet, (200 A) is shown Figure 26.
Figure 26. Typical Large Battery Cabinets
Table 13. Battery Holdover and Recharge Times
Cabinet Type Holdover Time  Recharge Time 
100 A 2 hours 7 hours
200 A 4 hours 13 hours
300 A 6 hours 20 hours
400 A 8 hours 26 hours
Large batter y
cabinets
Ci r cuit
breaker
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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
DC Power Distribution 
The typical distribution system has a DC power converter and cables to provide the 
power to the system circuit packs.
DC Power Distribution Unit (J58890CF-2)
Figure 27 shows a Power Distribution Unit in some DC-powered Multi-Carrier Cabinets. 
The unit sits at the bottom of the cabinet and contains the ring generator, 20-amp circuit 
breakers, terminal blocks, and system fan power. 
Figure 27. DC Power Distribution Unit (J58890CF-2) (Front)
Ci r cui t
breakers
DC power
distribution
unit
Ring
generatorTe r m i n a
lbl ock
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