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,...

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...

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....

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:...

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...

Site Requirements 
56 Cabinet Power Requirements 
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...

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...

Site Requirements 
58 Cabinet Power Requirements 
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...

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...

Site Requirements 
60 Cabinet Power Requirements 
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...