option 11 power specs

[coniglio]

how do i find out what the power specs are for an option 11? thank you.

 

[lgarza1]

I have one that I can fax to you if you are willing to give your fax number.

lgarza

 

[BMiles2000]

Page 134 of 408 Installing the power supplies
553-3021-210 Standard 7.00 January 2002
AC power supply installation
AC power requirements
The AC-powered version requires a non-switched dedicated power outlet
installed within 6 ft (1830 mm) of each cabinet, with:
• one non-switched dedicated outlet per cabinet with:
— Voltage: Recommended 100 to 240 volts
Maximum limits 90 and 250 volts
Single phase
— Frequency: 50 or 60 Hz
— Power (I/P Max): 750VA
Refer to “Commercial power requirements” on page 43 for detailed
information about power requirements.
Procedure 9
Installing the AC power supply
1 Set the AC breaker on the front of the power supply to the OFF
position.
2 Make sure that the switches on the power supply are properly set.
See Figure 49 on page 133.
WARNING
Wait at least five minutes after power to the unit is switched off before
removing the unit from the cabinet. Make sure that the power cord and
battery backup connection (if equipped) are both disconnected.
CAUTION
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.
Installing the power supplies Page 135 of 408
Option 11C Planning and Installation Guide
3 Insert the power supply into the first slot on the left of the card
shelf (refer to Figure 48 on page 132).
4 Lock it into place with the card tabs.
5 Attach the power line cord to the connector on the left side of the
power supply (see Figure 50 on page 135) by feeding the cord up
through the card guides.
Figure 50
AC power cable connection
6 Secure the power line cord in place using the clip at rear of
cabinet. See Figure 50 on page 135.
7 Route the rest of the power line cord down through the opening
at the bottom of the cabinet.
Commercial AC power connection
Clip at rear of cabinet
Optional battery backup
DC power connection
Page 136 of 408 Installing the power supplies
553-3021-210 Standard 7.00 January 2002
8 Test the ground of each system cabinet using the following:
a) Set the circuit breakers feeding the AC outlet used to power
the cabinet to OFF.
b) Connect the power line cord to the NTAK04 or NTDK78
main cabinet power supply.
c) Using an ohmmeter, measure the resistance from the ground
pin on the line cord to the ground receptacle on the AC outlet.
The resistance must be less than 0.25 Ohms.
If the cabinets are powered from different service panels, the
ground must be traced back to the panel serving the cabinet.
d) Reset the circuit breaker once the ground connection is
verified.
DC power supply installation
Note: The NTAK05 or NTDK72 DC breaker will trip
at -42.5 +/- 1.0Vdc.
Refer to the “DC-powered version” on page 51 for detailed information about
DC power requirements.
Table 15
DC power requirements
Minimum
(see note) Nominal Maximum
Recommended -42.5 V dc -52 V dc -54 V dc
Limits -42.5 V dc -52 V dc -57 V dc
Noise (CMESS) — — 25 dBrnc
Current — — 12 Amps
AC Ripple — — 100 mv RMS












Option 11C Planning and Installation Guide
Commercial power requirements
The Option 11C system is available in both AC-powered and DC-powered
versions.
AC-powered version
The AC-powered version is presented in two separate sections in this
Chapter:
• Optimal AC-powered installation
• Alternative AC-powered installation
The optimal installation of an AC-powered Option 11C system consists of a
direct connection to the electrical system in the building, provided certain
requirements are met. Refer to AC-powered installation later in this chapter
for detailed information.
Alternatively, an approved isolation transformer may be used for
AC-powered systems, where meeting the optimum requirements may be too
expensive or may not be achievable. See “Alternative AC-powered
installation” on page 45.
DC-powered version
With the DC-powered version of Option 11C, each cabinet is powered solely
from a DC power source. See DC-powered version later in this chapter for
detailed information.
Page 44 of 408 System and site requirements
553-3021-210 Standard 7.00 January 2002
AC-powered installation
It is recommended that a dedicated AC service panel be used with the Option
11C system. Equipment unrelated to the Option 11C must not be connected
to this panel. Keep all lighting, fans, motors, air conditioning equipment, and
the like, as “electrically separate” from the Option 11C system as possible.
Power from each outlet must meet the input requirements of at least one
Option 11C power supply as itemized in Table 5 on page 44. Please check
power requirements for other system equipment and install additional outlets
if required.
Site requirements
The following is a list of required site features for an optimal Option 11C
AC-powered system installation.
If the conditions below cannot be provided with a dedicated panel, the use of
an Isolation Transformer is recommended, as described under the heading
“Alternative AC-powered installation” on page 45 of this chapter.
• Dedicated circuit breaker panel
Provides power solely to the Option 11C system and its associated
hardware, such as TTYs, printers, and so on.
Note: It may not always be possible to power a complete system from a
single circuit-breaker panel. For example, an expansion cabinet may be
remotely located.
Table 5
AC input requirements for each NTAK04 or NTDK78 power supply
Voltage Maximum rated input voltage 100-240 Volts RMS,
single phase, 50-60 Hz.
Power
(I/P max)
750 VA minimum
Outlet Type
NEMA IG5-15R for 120 Volt, 15 Amp supply
NEMA IG6-15R for 208/240 Volt, 15 Amp supply
System and site requirements Page 45 of 408
Option 11C Planning and Installation Guide
• Insulated copper ground conductor
Connects the ground bus in the dedicated panel to the main service panel
ground or building ground reference. It must always be routed through
the same conduit as the supply conductors feeding the panel.
• Isolated-ground receptacles
All outlets connected to the dedicated panel must be of the isolated
ground type. A separate circuit is to be used for each device connected to
the panel. Outlets serving the cabinets must be close enough so that the
power cord can reach the cabinet power supply.
For systems equipped with one or two expansion cabinets, a separate
outlet for each cabinet must be provided. Each outlet must be from
separate circuits in the same panel.
• Isolated ground bus in the electrical panel, where permitted by local
codes.
Location of power outlets
The maximum distance between a power outlet and the system cabinet
depends on the length of the power cord. In North America, the power cord
is 9 ft 10 in. (3000 mm) long. In countries outside North America, the power
cord is 8 ft 2 in. (2490 mm) long.
Alternative AC-powered installation
If optimal conditions cannot be provided with a dedicated panel, the use of an
Isolation Transformer with the following characteristics is recommended:
• 120/208/240 V input, over-current protected at primary
• 120/208/240 V available at secondary outputs, each
circuit breaker-protected
• Primary and secondary windings must be fully isolated from one another
• Certified for use locally as a stand alone user product (CSA, UL, or other
locally recognized markings apparent)
• Capable of providing power to all Option 11C system equipment
operating simultaneously at full load
• Equipment unrelated to the Option 11C system must not be powered
from a transformer serving the Option 11C system.
Page 46 of 408 System and site requirements
553-3021-210 Standard 7.00 January 2002
Isolation transformer ground
It is recommended that the transformer ground have the following
characteristics:
• Separate grounds for primary and secondary windings rather than
common ground
• A “clean” and permanent SPG reference at the transformer secondary for
the Option 11C system.
In addition, verify the ground conductors inside the transformer to ensure
they are sized appropriately.
Note: Do not ground the transformer or Option 11C system to structural
steel or water pipes. Connect them to a known building ground reference.
Receptacles
Receptacle requirements are as follows:
• When mounted on the wall, they must be installed within reach of the
cabinet power cords
• All receptacles served by the secondary must be of the isolated ground
type
• The ground prong of each outlet must be connected by an insulated
conductor to the system SPG.
If the transformer has an isolated secondary ground lug, use it as the SPG. If
it doesn’t, use the chassis ground of the transformer as the Single Point
Ground.
System and site requirements Page 47 of 408
Option 11C Planning and Installation Guide
Installing an Isolation Transformer
Transformers with pluggable power cords:
1 Connect the power cords of all Option 11C system equipment to the
outlets on the transformer secondary.
2 Secure an insulated conductor between the ground lug on the main
cabinet of the Option 11C and the SPG lug on the transformer. Place a
“DO NOT DISCONNECT” tag on it.
Do not fasten or tie this conductor to the power cable feeding the
NTAK04 or NTDK78 power supply.
Note: All equipment associated with the Option 11C must be powered
exclusively from the secondary of the transformer, and must be grounded
to the secondary isolated ground lug. Do not connect unrelated
equipment to the Option 11C system isolation transformer.
The transformer primary must be powered through a dedicated circuit. If the
primary has a pluggable cord, ensure an additional ground connection is made
between the Option 11C SPG and a known building ground reference. This
connection is vital for safe and reliable operation. Do not connect any
Option 11C system ground lines to structural steel or water pipes, or any other
unreliable ground path. Use a ground point known to be “clean” and
permanent. Place a “DO NOT DISCONNECT” tag on it. Figure 16 on page
48 shows the pluggable cord connections.
Page 48 of 408 System and site requirements
553-3021-210 Standard 7.00 January 2002
Figure 16
Typical pluggable cord isolation transformer wiring plan
System and site requirements Page 49 of 408
Option 11C Planning and Installation Guide
Transformers without pluggable power cords
If the transformer does not have a pluggable cord, it must be hardwired to an
electrical panel, and all wires (including grounds) must be routed through a
single conduit.
Some electrical codes permit the use of conduit as the sole ground conductor
between pieces of equipment.
It is recommended that you run a separate insulated ground conductor through
the conduit to bond chassis grounds together. Such a conductor will maintain
the safety ground connection in the event that the conduit becomes corroded
or disconnected.
All ground lines must be run through the same conduit as the phase
conductors serving the equipment. Figure 17 on page 50 shows the Isolation
transformer connections.
Page 50 of 408 System and site requirements
553-3021-210 Standard 7.00 January 2002
Figure 17
Typical hardwired isolation transformer wiring plan
System and site requirements Page 51 of 408
Option 11C Planning and Installation Guide
DC-powered version
Each Option 11C cabinet may be powered solely from a DC source if it is
equipped with the following:
• NTAK05 or NTDK72 DC power supply
• NTAK28 Junction box.
Note: The NTAK05 or NTDK72 has a built-in circuit breaker that will
trip if the voltage difference at its input terminals drops below -42.5 V dc
+/- 1.0 V dc.
Table 6
DC power requirements for each NTAK05 or NTDK72 DC power supply
Minimum Nominal Maximum
Input Range -44 V dc -52 V dc -54 V dc
Noise (CMESS) — — 25 dBrnc
Current — — 12 Amps
AC Ripple — — 100 mv RMS
CAUTION
Do not allow the voltage difference between the input terminals of the
NTAK05 or NTDK72 to exceed 57 V dc. Doing so may result in
damage to the equipment and a safety hazard to personnel.
Page 52 of 408 System and site requirements
553-3021-210 Standard 7.00 January 2002
The minimum size of the conductors required between the DC source and the
Junction box is shown in Figure 7 on page 52.
Connect these components together as shown in Figure 18. Make sure the
Option 11C main cabinet ground post is connected to the building ground
reference by a minimum AWG #6 (metric #40) insulated conductor. Connect
the input terminals of the NTAK28 Junction box to a clean DC power source
meeting the requirements shown in Table 6 on page 51.
Table 7
Recommended wire size
Size (AWG) Size (Metric) Maximum Length (one way)
6 #40 50 ft (15 m)
8 #35 30 ft (9 m)
10 #25 20 ft (6 m)
System and site requirements Page 53 of 408
Figure 18
DC power supply connections
Auxiliary equipment power
Terminals, printers, modems, and other data units used in conjunction with
the Option 11C require special wiring considerations.
Power for system equipment in the switch room must:
• be powered from the same panel or transformer as the Option 11C
• be grounded to the same panel or transformer as the Option 11C
• be tagged at the panel to prevent unauthorized interruption
• not be controlled by a switch between the breaker and the equipment.
Service receptacles for Option 11C AC systems and associated equipment
must be:
• of the isolated ground type, such as NEMA IG5-15

 

[vztech]

Don't use building steel ! grounded to the same panel as the Option 11C power.