HP 11900 User manual

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HP FlexFabric 11900 2400W DC
Power Supply User Guide
Part number: 5998-4092
Power supply overview
The DC2400 (JG617A) is a power supply with DC input and DC output. It can provide up
to 2400 W of DC output.
The DC2400 has the following features:
Feature Description
Protection function
Protection for under-voltage input, over-voltage input,
over-voltage output, output short circuit, over-current output,
and overheat.
Support for hot
swapping
You can plug in or unplug the redundant power supply
when the device is operating properly.
Support for
redundancy
The power supplies can work in N+1 or N+N redundant
mode. For more information, see “Power supply
configuration.”
CAUTION:
•DC2400 cannot work with other models of power supplies in the same device.
•When the temperature of the power supply is higher than the upper limit of the
operating temperature, the power supply automatically shuts down. When the
temperature falls into the normal range, the power supply automatically starts.

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Front panel
Figure 1 Front panel of DC2400
(1) Captive screw (2) Power supply handle
(3) Power input jack (4) Power cord screw hole
(5) Power input status LED (6) Power output status LED
LEDs
A power supply has two status LEDs. The following table lists the LED status and
description.
LED Sign Color Description
Power
input
INP
OK
Off
The power supply has no power input.
The input voltage is too low, and the power
supply enters the protected state.
Green The power input is normal.

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LED Sign Color Description
Power
output
DC/F
LT
Green The power output is normal.
Red
The power supply encounters exceptional
power output problems. In other words,
when output short circuit, over-current
output, over-voltage output, under-voltage
input, over-temperature, or remote
shutdown occurs, the power supply enters
the protected state.
Orange
The temperature of the power supply is too
high, and the power supply will enter the
protected state.
CAUTION:
•If a power supply has no power input, or the connected circuit breaker is off, but
another power supply is providing power supply to the system, it is normal that the
power output status LED is red.
•After the circuit breaker that connects to a power supply is off, it is normal that the
LEDs on the power supply last on for a while.
Technical specifications
Item Specifications
Rated input voltage –48 VDC to –60 VDC
Rated output voltage 12 VDC
Maximum input current 60 A
Maximum output current 200 A at 12 VDC
Maximum output power 2400 W
Dimensions (H × W × D) 41 × 102 × 391 mm (1.61 × 4.02 ×
15.39 in)
Ambient
temperature
Operating
temperature 0°C to +45°C (32°F to 113°F)
Storage
temperature –40°C to +70°C (–40°F to +158°F)

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Item Specifications
Humidity
Operating
humidity
(noncondensing)
10% to 95%
Storage humidity
(noncondensing) 5% to 95%
Power supply configuration
You can determine the number of power supplies to be configured for the system
according to the actual power consumption and power supply conditions.
•In an environment with two mains power inputs, you can configure N+N redundant
mode.
•In an environment with only one mains power input, you can configure N+1 or N+N
redundant mode.
•For easy usage and maintenance, configure a proper circuit breaker for each power
input. The rated current of the circuit breaker must be more than 80 A.
NOTE:
In the terms
N+1 and N+N , the value of N depends on the number of power supply
slots in the device. N+1 or N+N must not be more than the total number of power
supply slots.
Installing and removing a power supply
Installing a power supply
Figure 2 illustrates the flow for installing a power supply. Strictly follow the sequence to
avoid possible dangers.

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Figure 2 Installation flow of a power supply
NOTE:
The device needs at least one power supply, so the chassis has a power supply slot
w
ithout a blank panel. For this slot, skip “Remove the blank panel” in the figure
above.
Before the installation, prepare an ESD-preventive wrist strap and a Phillips screwdriver.
Installing the power supply
To install the power supply:
1. Wear an ESD-preventive wrist strap, and make sure that the wrist strap makes good
skin contact and is properly grounded.
2. Use the Phillips screwdriver to unfasten the captive screws on the blank panel, and
remove the blank panel from the slot to be used (see callout 2 in Figure 3).

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Figure 3 Removing the blank panel
(1) Unfasten the captive screws on the blank panel
(2) Remove the blank panel
3. Take the power supply out of the package.
4. The blank panel is printed with a diagram of correct installation direction. You can
follow the instruction to install the power supply. As shown in Figure 4 (vertical
installation), be sure of the correct direction of the power supply. Holding the
handle of the power supply with one hand and supporting the bottom of the power
supply with the other, slide the power supply along the guide rails into the slot.

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Figure 4 Installing the power supply into a vertical slot
5. Press the handle back into the notch of the power supply.
6. Use the Phillips screwdriver to fasten the captive screw on the handle to fix the
power supply.
Connecting the power cord
W
ARNING!
•Make sure that each power cord has a separate circuit breaker.
•Turn off the circuit breaker before you connect the power cord.
To connect the power cord:
1. Plug the connector of the DC power cord supplied with the power supply into the
receptacle of the power supply.
2. Fasten the screw of the power cord to prevent a falloff.

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Figure 5 Connecting the power cord
(1) Plug the DC power cord connector into the receptacle of the power supply.
(2) Fasten the screw of the power cord.
3. Plug the other end of the DC power cord to the power source: Attach the end
marked with “–“ of the blue DC power cord to the terminal marked with “–“, and
attach the end marked with “+“ of the black DC power cable to the terminal marked
with “+”.
CAUTION:
W
hen you connect the DC power cord to the power source, make sure that the circuit
breaker is turned off for both the positive and negative lines.
Removing a power supply
Figure 6 illustrates the flow for removing a power supply. Strictly follow the sequence to
avoid possible dangers.

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Figure 6 Removal flow of a power supply
NOTE:
The device needs at least one power supply, so the chassis has a power supply slot
w
ithout a blank panel. For this slot, skip “Install the blank panel” in the figure above.
Before you remove a power supply, prepare an ESD-preventive wrist strap and a Phillips
screwdriver.
Removing the power cord
To remove the power cord:
1. Turn off the circuit breaker of the power cord.
2. Wear an ESD-preventive wrist strap, and make sure that the wrist strap makes good
skin contact and is properly grounded.
3. Loosen the screw that fastens the power cord, and pull the power cord out.
CAUTION:
A
fter the circuit breaker that connects to a power supply is off, it is normal that the
LEDs on the power supply last on for a while.

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Removing the power supply
To remove the power supply:
1. Use the Phillips screwdriver to unfasten the captive screw on the power supply.
2. Hold the captive screw and pull out the handle of the power supply.
3. As shown in Figure 7,grasp the handle of the power supply with one hand and pull
it out a little, support the bottom of the power supply with the other hand, and then
pull the module slowly along the guide rails out of the slot.
Figure 7 Removing the power supply
4. Put the power supply on an antistatic mat.
5. Install the blank panel back to the power supply slot, and fasten the captive screws.
CAUTION:
Before you insert a removed power supply into a power supply slot, make sure that
the LEDs on the power supply are both off.