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QFX5120 Power System

AC Power Supply in QFX5120 Switches

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support two 650-W AC or DC power supplies. Additionally, QFX5120-48T switches support two 850-W high-voltage power supplies with AC or DC input. QFX5120-48YM switches support two 850-W AC or DC power supplies. The power supplies support front-to-back or back-to-front airflow. The power supplies are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs when the second power supply is installed and running. You can remove and replace them without powering off the switch or disrupting switch functions. We ship QFX5120 switch models with two AC or DC power supplies preinstalled in the rear panel of the chassis. This topic describes the AC power supplies supported on QFX5120 switches.

CAUTION:

Do not mix:

  • AC and DC power supplies in the same chassis.

  • 650-W and 850-W power supplies in the same QFX5120-48T chassis.

  • Power supplies with different airflow directions in the same chassis.

  • Power supplies and fan modules with different airflow directions in the same chassis.

Characteristics of the AC Power Supply for QFX5120 Switches

You can install up to two power supplies in the power supply slots in the rear panel of the QFX5120 switch chassis. On QFX5120-32C switches, the slots are labeled PS0 and PS1. On QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches, the slots are labeled 0 and 1 and have a power icon next to them.

Note:

You must install both the power supplies for optimal functioning of the switch.

If the switch is operational while you are replacing power supplies, you must remove only one power supply at a time.

Figure 1 shows the AC power supply for a QFX5120-32C switch.

Figure 1: AC Power Supply for QFX5120-32C SwitchesAC Power Supply for QFX5120-32C Switches
  1
—

Ejector lever

  3
—

AC power cord inlet

  2
—

Power supply handle

 

Figure 2 shows the AC power supply for QFX5120-48T and QFX5120-48Y switches.

Figure 2: AC Power Supply for QFX5120-48T and QFX5120-48Y SwitchesAC Power Supply for QFX5120-48T and QFX5120-48Y Switches
  1
—

Power supply handle

  3
—

Ejector lever

  2
—

AC power cord inlet

 

Figure 3 shows the AC power supply for QFX5120-48YM switches.

Figure 3: AC Power Supply for QFX5120-48YM SwitchesAC Power Supply for QFX5120-48YM Switches
  1
—

Power supply handle

  3
—

Ejector lever

  2
—

AC power cord inlet

  4
—

Power cord retainer

Table 1 lists the specifications of the AC power supplies used in QFX5120 switches.

Table 1: Specifications of the AC Power Supplies Used in QFX5120 Switches

Item

Specifications

Model number

  • QFX5120-32C: QFX520048Y-APSU-AO or QFX520048Y-APSU-AI

  • QFX5120-48T and QFX5120-48Y: JPSU-650W-AC-AO or JPSU-650W-AC-AI

  • QFX5120-48YM: JPSU-850W-AC-AFO or JPSU-850W-AC-AFI

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Weight

  • QFX5120-32C: 2.1 lb (0.93 kg)

  • QFX5120-48T and QFX5120-48Y: 2.2 lb (0.98 kg)

  • QFX5120-48YM: 2.3 lb (1.04 kg)

Minimum installed in chassis

1

Maximum installed in chassis

2

Power supply slots

  • QFX5120-32C switches—Install power supply in slots labeled PS0 and PS1 in the rear panel of the chassis.

  • QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches—Install power supply in slots labeled 0 and 1 with a power icon next to them in the rear panel of the chassis.

Airflow

  • Front-to-back, indicated by the label F2B and a red handle in QFX5120-32C switches and by the label AIR OUT and a Juniper Gold handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

  • Back-to-front, indicated by label B2F and a blue handle in QFX5120-32C switches and by the label AIR IN and a Juniper Azure Blue handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Status LEDs

  • QFX5120-32C switch—Bicolored LED

  • QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switch—AC, DC, and ! (fault)

To prevent electrical injury while installing or removing AC power supplies, carefully follow instructions in Connect Power to an AC-Powered QFX5120 Switch and Maintain the QFX5120 Power System.

AC Power Supply Airflow

Each power supply is cooled by its own internal cooling system.

CAUTION:

Verify that the airflow direction in the power supplies matches the airflow direction in the fan modules. Ensure that each power supply that you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm. If you need to convert the airflow direction in a chassis, you must replace all the fan modules and power supplies with the other airflow direction and update the installation base (see Register Products—Mandatory to Validate SLAs).

Table 2 lists the AC power supplies used in QFX5120 switches and the direction of airflow in them. The power supplies have color-coded handles and labels that indicate the direction of the airflow.

Table 2: Airflow Direction in AC Power Supplies for QFX5120 Switches

Power Supply

Color of the Power Supply Handle

Label

Direction of Airflow

QFX5120-32C—QFX520048Y-APSU-AO

Red

F2B

Front-to-back—Cold air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

QFX5120-48T and QFX5120-48Y—JPSU-650W-AC-AO

Juniper Gold

AIR OUT

QFX5120-48YM—JPSU-850W-AC-AFO

Juniper Gold

AIR OUT

QFX5120-32C—QFX520048Y-APSU-AI

Blue

B2F

Back-to-front—Cold air intake to cool the chassis is through the vents on the rear panel of the chassis and hot air exhausts through the vents on the front panel of the chassis.

QFX5120-48T and QFX5120-48Y—JPSU-650W-AC-AI

Juniper Azure Blue

AIR IN

QFX5120-48YM—JPSU-850W-AC-AFI

Juniper Azure Blue

AIR IN

Power Supply Specifications for AC Power Supplies for QFX5120 Switches

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support 650-W AC or DC power supplies. Additionally, QFX5120-48T switches support two 850-W high-voltage power supplies with AC or DC input. QFX5120-48YM switches support two 850-W AC or DC power supplies.

Table 3 shows the power supply specifications for AC power supplies for QFX5120-32C switches.

2

Table 3: Power Supply Specifications for AC Power Supplies for QFX5120-32C Switches

Item

Specification

AC input voltage

Operating range: 100 VAC through 240 VAC

AC input line frequency

50–60 Hz

AC input current rating

  • 6 A at 100 VAC

  • 3.8 A at 240 VAC

Typical power consumption

191 W

Maximum power consumption

365  W
Note:

The maximum power consumption values specified here assumes 3.5W power per 100G optical module used.

Table 4 shows the power supply specifications for AC power supplies for QFX5120-48T switches.

Table 4: Power Supply Specifications for AC Power Supplies for QFX5120-48T Switches

Item

Specification

AC input voltage

Operating range: 100 VAC through 240 VAC

AC input line frequency

50–60 Hz

AC input current rating

5 A at 100–240 VAC

Typical power consumption

205 W

Maximum power consumption

251 W

Table 5 shows the power supply specifications for AC power supply for QFX5120-48Y switches.

Table 5: Power Supply Specifications for AC Power Supplies for QFX5120-48Y Switches

Item

Specification

AC input voltage

Operating range: 100 VAC through 240 VAC

AC input line frequency

50–60 Hz

AC input current rating

6 A at 100–240 VAC

Typical power consumption

185 W

Maximum power consumption

283 W

Table 6 shows the power supply specifications for AC power supply for QFX5120-48YM switches.

Table 6: Power Supply Specifications for AC Power Supplies for QFX5120-48YM Switches

Item

Specification

AC input voltage

Operating range: 100 VAC through 240 VAC

AC input line frequency

50–60 Hz

AC input current rating

  • 7.5 A at 100 VAC

  • 3 A at 240 VAC

Typical power consumption

310 W, 321 W with MACsec

Maximum power consumption

446 W, 460 W with MACsec

Specifications of the Power Cord for AC Power Supplies for QFX5120 Switches

A detachable AC power cord is supplied with the AC power supplies. The coupler for AC power supplies is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

CAUTION:

The AC power cord provided with each power supply is intended for use with that power supply only and not for any other use.

Note:

In North America, AC power cords must not exceed 4.5 meters in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords supplied with the switch are in compliance.

Table 7 lists the specifications of the AC power cord for the AC power supplies provided for the countries and regions listed in the table.

Table 7: Specifications of the AC Power Cord for the AC Power Supplies

Country/Region

Electrical Specifications

Plug Standards

Juniper Model Number

Argentina

250 VAC, 10  A, 50 Hz

IRAM 2073 Type RA/3

CBL-EX-PWR-C13-AR

Australia

250 VAC, 10 A, 50 Hz

AS/NZZS 3112 Type SAA/3

CBL-EX-PWR-C13-AU

Brazil

250 VAC, 10 A, 50 Hz

NBR 14136 Type BR/3

CBL-EX-PWR-C13-BR

China

250 VAC, 10 A, 50 Hz

GB 1002-1996 Type PRC/3

CBL-EX-PWR-C13-CH

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 10 A, 50 Hz

CEE (7) VII Type VIIG

CBL-EX-PWR-C13-EU

India

250 VAC, 10 A, 50 Hz

IS 1293 Type IND/3

CBL-EX-PWR-C13-IN

Israel

250 VAC, 10 A, 50 Hz

SI 32/1971 Type IL/3G

CBL-EX-PWR-C13-IL

Italy

250 VAC, 10 A, 50 Hz

CEI 23-16 Type I/3G

CBL-EX-PWR-C13-IT

Japan

125 VAC, 12 A, 50 Hz or 60 Hz

JIS 8303

CBL-EX-PWR-C13-JP

Korea

250 VAC, 10 A, 50 Hz or 60 Hz

CEE (7) VII Type VIIGK

CBL-EX-PWR-C13-KR

North America

125 VAC, 13 A, 60 Hz

NEMA 5-15 Type N5-15

CBL-EX-PWR-C13-US

South Africa

250 VAC, 10 A, 50 Hz

SABS 164/1:1992 Type ZA/13

CBL-EX-PWR-C13-SA

Switzerland

250 VAC, 10 A, 50 Hz

SEV 6534-2 Type 12G

CBL-EX-PWR-C13-SZ

Taiwan

125 VAC, 11 A and 15 A, 50 Hz

NEMA 5-15P Type N5-15P

CBL-EX-PWR-C13-TW

United Kingdom

250 VAC, 10 A, 50 Hz

BS 1363/A Type BS89/13

CBL-EX-PWR-C13-UK

Figure 4 illustrates the plug on the power cord for the AC power supplies for a few of the countries or regions listed in Table 7.

Figure 4: AC Plug Types for AC Power SuppliesAC Plug Types for AC Power Supplies

LEDs on the AC Power Supplies Used in QFX5120 Switches

Figure 5 shows the LED on the AC power supply for QFX5120-32C switches.

Figure 5: LED on the AC Power Supply for QFX5120-32C SwitchesLED on the AC Power Supply for QFX5120-32C Switches
  1
—

LED

 

Table 8 describes the LED on the AC power supply for QFX5120-32C switches.

Table 8: LED on the AC Power Supply for QFX5120-32C Switches

Color

State

Description

Green

On steadily

The power supply is sending out power correctly.

Blinking

The power supply is in standby mode.

Red

On steadily

An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Blinking

The internal fan in the power supply has failed. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Unlit

Unlit

The power supply is disconnected from power, or the power supply is not receiving power.

Figure 6 shows the LEDs on the AC power supply for QFX5120-48T and QFX5120-48Y switches. Figure 7 shows the LEDs on the AC power supply for QFX5120-48YM switches.

Figure 6: LEDs on the AC Power Supply for QFX5120-48T and QFX5120-48Y SwitchesLEDs on the AC Power Supply for QFX5120-48T and QFX5120-48Y Switches
  1
—

AC LED (labeled AC)

  3
—

Fault LED (labeled !)

  2
—

DC LED (labeled DC)

 
Figure 7: LEDs on the AC Power Supply for QFX5120-48YM SwitchesLEDs on the AC Power Supply for QFX5120-48YM Switches
  1
—

AC LED (labeled AC)

  3
—

Fault LED (labeled !)

  2
—

DC LED (labeled DC)

 

Table 9 describes the LEDs on the AC power supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Table 9: LEDs on the AC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches

LED Label

Color

State

Description

AC

Green

On steadily

The power supply is receiving power.

Unlit

Unlit

  • The power supply is disconnected from power, or the power supply is not receiving power.

  • The AC power cord might not be installed properly, or the power input voltage might not be within normal operating range.

DC

Green

On steadily

The power supply is sending out power correctly.

Unlit

Unlit

  • The power supply is disconnected from power, or the power supply is not receiving power.

  • The AC power cord might not be installed properly, or the power input voltage might not be within normal operating range.

  • The power supply might have an internal failure.

! (Fault)

Amber

On steadily

An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

DC Power Supply in QFX5120 Switches

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support two 650-W AC or DC power supplies. Additionally, QFX5120-48T switches support 850-W high-voltage power supplies with AC or DC input. QFX5120-48YM switches support two 850-W AC or DC power supplies. The power supplies support front-to-back or back-to-front airflow. The power supplies are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs when the second power supply is installed and running. You can remove and replace it without powering off the switch or disrupting switch functions. We ship QFX5120 switch models with two AC or DC power supplies preinstalled in the rear panel of the chassis. This topic describes the DC power supplies supported on QFX5120 switches.

CAUTION:

Do not mix:

  • AC and DC power supplies in the same chassis.

  • 650-W and 850-W power supplies in the same QFX5120-48T chassis.

  • Power supplies with different airflow directions in the same chassis.

  • Power supplies and fan modules with different airflow directions in the same chassis.

Characteristics of the DC Power Supply

You can install up to two power supplies in the power supply slots in the rear panel of the QFX5120 switch chassis. On QFX5120-32C switches, the slots are labeled PS0 and PS1. On QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches, the slots are labeled 0 and 1 and have a power icon next to them.

Note:

You must install both the power supplies for optimal functioning of the switch.

If the switch is operational while you are replacing power supplies, you must remove only one power supply at a time.

Figure 8 shows the DC power supply for a QFX5120-32C switch.

Figure 8: DC Power Supply for QFX5120-32C Switches DC Power Supply for QFX5120-32C Switches

Figure 9 shows the faceplate of a DC power supply for QFX5120-32C switches.

Figure 9: Faceplate of a DC Power Supply for QFX5120-32C Switches Faceplate of a DC Power Supply for QFX5120-32C Switches
  1
—

Ejector lever

  3
—

Power supply handle

  2
—

LED

  4
—

Input terminals

Figure 10 shows the DC power supply for QFX5120-48T and QFX5120-48Y switches.

Figure 10: DC Power Supply for QFX5120-48T and QFX5120-48Y SwitchesDC Power Supply for QFX5120-48T and QFX5120-48Y Switches
  1
—

Input terminals

  3
—

Ejector lever

  2
—

Protective earthing terminal

  4
—

Power supply handle

Figure 11 shows the DC power supply for QFX5120-48YM switches.

Figure 11: DC Power Supply for QFX5120-48YM SwitchesDC Power Supply for QFX5120-48YM Switches
  1
—

Power supply handle

  3
—

Ejector lever

  2
—

Input terminals

 

Figure 12 shows the faceplate of a DC power supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Figure 12: Faceplate of a DC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM SwitchesFaceplate of a DC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches
  1
—

Negative Input terminals

  6
—

Fault LED (labeled !)

  2
—

Positive Input terminals

  7
—

Out LED (labeled OUT)

  3
—

Terminal cover

  8
—

In LED (labeled IN)

  4
—

Ejector lever

  9
—

Power supply handle

  5
—

Protective earthing terminal

 

Table 10 lists the specifications of the DC power supplies used in QFX5120 switches.

Table 10: Specifications of the DC Power Supplies Used in QFX5120 Switches

Item

Specifications

Model number

  • QFX5120-32C: QFX520048Y-DPSU-AO and QFX520048Y-DPSU-AI

  • QFX5120-48T and QFX5120-48Y: JPSU-650W-DC-AFO and JPSU-650W-DC-AFI

  • QFX5120-48YM: JPSU-850W-DC-AFO and JPSU-850W-DC-AFI

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Weight

  • QFX5120-32C: 2.2 lb (0.98 kg)

  • QFX5120-48T and QFX5120-48Y: 2.2 lb (0.98 kg)

  • QFX5120-48YM: 2.2 lb (1 kg)

Minimum installed in chassis

1

Maximum installed in chassis

2

Power supply slots

  • QFX5120-32C switches—Install power supply in slots labeled PS0 and PS1 in the rear panel of the chassis.

  • QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches—Install power supply in slots labeled 0 and 1 with a power icon next to them in the rear panel of the chassis.

Fans

Internal

Airflow

  • Front-to-back, indicated by the label F2B and a red handle in QFX5120-32C switches and by the label AIR OUT and a Juniper Gold handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

  • Back-to-front, indicated by label B2F and a blue handle in QFX5120-32C switches and by the label AIR IN and a Juniper Azure Blue handle in QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Power supply status LEDs

  • QFX5120-32C switch—Bi-colored LED

  • QFX5120-48T switch—AC, DC, and ! (fault)

  • QFX5120-48Y switch—AC, DC, and ! (fault)

  • QFX5120-48YM switch—AC, DC, and ! (fault)

To prevent electrical injury while installing or removing DC power supplies, carefully follow instructions in Connect Power to a DC-Powered QFX5120 Switch and Maintain the QFX5120 Power System.

DC Power Supply Airflow

Each power supply has its own fan and is cooled by its own internal cooling system.

CAUTION:

Verify that the airflow direction in the power supplies matches the airflow direction in the fan modules. Ensure that each power supply that you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm. If you need to change the airflow direction in a chassis, you must replace all the fan modules and power supplies with the other airflow direction and update the installation base (see Register Products—Mandatory to Validate SLAs).

Table 11 lists the DC power supply models and the direction of airflow in them. The power supplies have color-coded handles and labels that indicate the direction of the airflow.

Table 11: Airflow Direction in DC Power Supplies for QFX5120 Switches

Model

Color of the Power Supply Handle

Label

Direction of Airflow

QFX5120-32C—QFX520048Y-DC-AFO

Red

F2B

Front-to-back—Cold air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

QFX5120-48T and QFX5120-48Y—JPSU-650W-DC-AFO

Juniper Gold

AIR OUT

QFX5120-48YM—JPSU-850W-DC-AFO

Juniper Gold

AIR OUT

QFX5120-32C—QFX520048Y-DC-AFI

Blue

B2F

Back-to-front—Cold air intake to cool the chassis is through the vents on the rear panel of the chassis and hot air exhausts through the vents on the front panel of the chassis.

QFX5120-48T and QFX5120-48Y—JPSU-650W-DC-AFI

Juniper Azure Blue

AIR IN

QFX5120-48YM—JPSU-850W-DC-AFI

Juniper Azure Blue

AIR IN

Power Supply Specifications for DC Power Supplies for QFX5120 Switches

QFX5120-32C, QFX5120-48T, and QFX5120-48Y switches support 650-W AC or DC power supplies. Additionally, QFX5120-48T switches support two 850-W high-voltage power supplies with AC or DC input. QFX5120-48YM switches support two 850-W AC or DC power supplies.

Table 12 shows the power supply specifications for DC power supplies for QFX5120-32C switches.

Table 12: Power Supply Specifications for DC Power Supplies for QFX5120-32C Switches

Item

Specifications

DC input voltage

  • Rated operating voltage: –48 VDC through 60 VDC

  • Operating voltage range: –40.8 VDC through 72 VDC

DC input current rating

16 A maximum

Typical power consumption

231 W

Maximum power consumption

493 W
Note:

The maximum power consumption values specified here assumes 3.5W power per 100G optical module used.

Table 13 shows the power supply specifications for DC power supplies for QFX5120-48T switches.

Table 13: Power Supply Specifications for DC Power Supplies for QFX5120-48T Switches

Item

Specifications

DC input voltage

  • Rated operating voltage: –48 VDC through 60 VDC

  • Operating voltage range: –44 VDC through 72 VDC

DC input current rating

10 A maximum

Typical power consumption

222 W

Maximum power consumption

227 W

Table 14 shows the power supply specifications for DC power supplies for QFX5120-48Y switches.

Table 14: Power Supply Specifications for DC Power Supplies for QFX5120-48Y Switches

Item

Specifications

DC input voltage

  • Rated operating voltage: –48 VDC through 60 VDC

  • Operating voltage range: –40.8 VDC through 72 VDC

DC input current rating

10.5 A maximum

Typical power consumption

319 W

Maximum power consumption

342 W

Table 15 shows the power supply specifications for DC power supplies for QFX5120-48YM switches.

Table 15: Power Supply Specifications for DC Power Supplies for QFX5120-48YM Switches

Item

Specifications

DC input voltage

  • Rated operating voltage: –48 VDC through 60 VDC

  • Operating voltage range: –43.2 VDC through 69 VDC

DC input current rating

16 A maximum

Typical power consumption

333 W

Maximum power consumption

356 W

LEDs on the DC Power Supplies Used in QFX5120 Switches

Figure 13 shows the LED on the DC power supply for QFX5120-32C switches. Figure 14 shows the LEDs on the DC power supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Figure 13: LED on the DC Power Supply for QFX5120-32C Switches LED on the DC Power Supply for QFX5120-32C Switches
  1
—

LED

 

Table 16 describes the LED on the DC power supply for QFX5120-32C switches.

Table 16: LED on the DC Power Supply for QFX5120-32C Switches

Color

State

Description

Green

On steadily

The power supply is sending out power correctly.

Blinking

The power supply is in standby mode and is receiving power at +5 V.

Alternating red/green

Blinking

Power supply warning. Check the logs for related messages.

Red

On steadily

An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Blinking

The internal fan in the power supply has failed. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Unlit

Unlit

The power supply is disconnected from power, or the power supply is not receiving power.
Figure 14: LEDs on the DC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM SwitchesLEDs on the DC Power Supply for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches
  1
—

In LED (labeled IN)

  3
—

Fault LED (labeled !)

  2
—

Out LED (labeled OUT)

 
CAUTION:

The V+ terminals are shunted internally together, as are the V- terminals. You can wire the same polarity terminal together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Table 17 describes the LEDs on the DC power supplies for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM switches.

Table 17: LEDs on the DC Power Supplies for QFX5120-48T, QFX5120-48Y, and QFX5120-48YM Switches

LED Label

Color

State

Description

IN

Green

On steadily

The power supply is receiving power.

Unlit

Unlit

The power supply is disconnected from power, or the power supply is not receiving power.

OUT

Green

On steadily

The power supply is sending out power correctly.

Unlit

Unlit

The power supply is disconnected from power, or the power supply is not sending out power correctly.

! (Fault)

Amber

On steadily

An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

High-Voltage Power Supply for QFX5120-48T Switches

QFX5120 switches support two 650-W AC or DC power supplies with front-to-back or back-to-front airflow directions. Additionally, QFX5120-48T switches support two 850-W high-voltage power supplies with AC or DC input and front-to-back or back-to-front airflow. You must order a high-voltage power supply separately. Power supplies for the QFX5120 switch are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs when the second power supply is installed and running. You can remove and replace them without powering off the switch or disrupting switch functions. We ship QFX5120 switch models with two AC or DC power supplies preinstalled in the rear panel of the chassis. This topic describes the high-voltage power supplies supported on QFX5120-48T switches.

CAUTION:

Do not mix:

  • AC and DC power supplies in the same chassis.

  • 650-W and 850-W power supplies in the same QFX5120-48T chassis.

  • Power supplies with different airflow directions in the same chassis.

  • Power supplies and fan modules with different airflow directions in the same chassis.

Characteristics of the High-Voltage Power Supply for QFX5120-48T Switches

QFX5120-48T switches support two high-voltage power supplies with AC or DC input and front-to-back or back-to-front airflow.

Figure 15 shows the high-voltage power supply for QFX5120-48T switches.

Figure 15: High-Voltage Power Supply for QFX5120-48T SwitchesHigh-Voltage Power Supply for QFX5120-48T Switches
  1
—

Power supply handle

  3
—

Ejector lever

  2
—

Power cord inlet

 

You can install up to two power supplies in the power supply slots in the rear panel of the QFX5120 switch chassis. On QFX5120-48T switches, the slots are labeled 0 and 1 and have a power icon next to them.

Table 18 lists the specifications of the high-voltage power supplies used in QFX5120-48T switches.

Table 18: Specifications of the High-Voltage Power Supplies Used in QFX5120-48T Switches

Item

Specifications

Model number

QFX5120-48T: JPSU-850W-HV-AFO or JPSU-850W-HV-AFI

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Weight

2.2 lb (1 kg)

Minimum installed in chassis

1

Maximum installed in chassis

2

Power supply slots

Slots labeled 0 and 1 with a power icon next to them in the rear panel of the chassis.

Fans

Internal

Power supply status LEDs

AC, DC, and ! (fault)

To prevent electrical injury while installing or removing power supplies, carefully follow instructions in Connect Power to a QFX5120-48T Switch Powered by a High-Voltage Power Supply and Maintain the QFX5120 Power System.

High-Voltage Power Supply Airflow

Each power supply is cooled by its own internal cooling system.

The power supplies have color-coded handles that indicate the direction of the airflow. The Juniper Gold handles and AIR OUT label on the power supplies for QFX5120-48T switches indicate front-to-back airflow. The Juniper Azure Blue handles and AIR IN label on the power supplies for QFX5120-48T switches indicate back-to-front airflow.

CAUTION:

Verify that the airflow direction in the power supplies matches the airflow direction in the fan modules. Ensure that each power supply that you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm. If you need to change the airflow direction in a chassis, you must replace all the fan modules and power supplies with the other airflow direction and update the installation base (see Register Products—Mandatory to Validate SLAs).

Table 19 lists the high-voltage power supplies used in QFX5120-48T switches and the direction of airflow in them.

Table 19: Airflow Direction in High-Voltage Power Supplies for QFX5120-48T Switches

Power Supply

Direction of Airflow

Color of the Power Supply Handle

JPSU-850W-HV-AFO

Front-to-back—cold air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

Juniper Gold

JPSU-850W-HV-AFI

Back-to-front—cold air intake to cool the chassis is through the vents on the rear panel of the chassis and hot air exhausts through the vents on the front panel of the chassis.

Juniper Azure Blue

Power Supply Specifications for High-Voltage Power Supplies for QFX5120-48T switches

Table 20 shows the power supply specifications for the high-voltage power supplies for QFX5120-48T switches operating with AC input.

Table 20: Power Supply Specifications for the High-Voltage Power Supplies for QFX5120-48T Switches Operating with AC Input

Item

Specification

AC input voltage

Operating range: 100 VAC through 277 VAC

AC input line frequency

50–60 Hz

AC input current rating

  • 6 A at 100 VAC

  • 3 A at 277 VAC

Typical power consumption

290 W

Maximum power

440 W

Table 21 shows the power supply specifications for the high-voltage power supplies for QFX5120-48T switches operating with DC input.

Table 21: Power Supply Specifications for the High-Voltage Power Supplies for QFX5120-48T Switches Operating with DC Input

Item

Specification

DC input voltage

Operating range: 240 VDC through 380 VDC

DC input current rating

4 A

Typical power consumption

290 W

Maximum power

440 W

Specifications of the Power Cord for High-Voltage Power Supply for QFX5120-48T Switches

You can order a detachable power cord separately for your high-voltage power supplies. The plug or connector of the power cord fits into the power source outlet that is standard for your geographical location.

CAUTION:

The power cord provided with each power supply is intended for use with that power supply only and not for any other use.

Note:

In North America, AC power cords must not exceed 4.5 meters in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords supplied with the switch are in compliance.

Table 22 lists the specifications of the power cord for the high-voltage power supplies provided for the countries and regions listed in the table.

Table 22: Specifications of the Power Cords for the High-Voltage Power Supplies

Locale

Cord Set Rating

Plug Standards

Spare Juniper Model Number

Graphic

Argentina

16 A, 250 VAC

IRAM 2073 Type RA/3

CBL-JNP-SG4-AR

Australia and New Zealand

15 A, 250 VAC

AS/NZS 4417

CBL-JNP-SG4-AU

Brazil

16 A, 250 VAC

NBR 14136 Type BR/3

CBL-JNP-SG4-BR

China

16 A, 250 VAC

GB2099

CBL-JNP-SG4-CH

Europe (except Italy, Switzerland, and United Kingdom)

20 A, 250 VAC

CEE 7/7 STRAIGHT

CBL-JNP-SG4-EU

Great Britain

13 A, 250 VAC,

BS1363

CBL-JNP-SG4-UK

India

16 A, 250 VAC

SANS 164-1

CBL-JNP-SG4-SA

Israel

16 A, RA, 250 VAC

SI 32/1971 Type IL/3G

CBL-JNP-SG4-IL

Italy

16 A, 250 VAC

CEI 23-16

CBL-JNP-SG4-IT

North America

20 A, 250 VAC

C20 to Anderson 3-5958p4

CBL-JNP-SG4-C20

North America

16 A, 250 VAC

Locking NEMA L6-20P

CBL-JNP-SG4-US-L

North America

16 A, 250 VAC

NEMA 6-20P

CBL-JNP-SG4-US

North America

15 A, 277 V

NEMA I7-20P

CBL-JNP-SG4-HVAC

North America

20 A, 250 V

IEC 320P6W

CG_CBL-APP-400-02

South Africa

16 A, 250 VAC

SANS 164-1

CBL-JNP-SG4-SA

Switzerland

16 A, 250 VAC

CEI 23-50

CBL-JNP-SG4-SZ

All countries

16 A, 400 VAC

You can attach a plug as permitted by the local code.

CBL-PWR2-BARE

This bare cable is used for connecting to DC power input and is shipped without any lug attached. You can attach DC connector lugs as permitted by the local code.

All countries

16 A, 400 VAC

You can attach a plug as permitted by the local code.

CBL-PWR2-BARE-RA

This bare cable is used for connecting to DC power input and is shipped without any lug attached. You can attach DC connector lugs as permitted by the local code.

North America

30 A, 400 VAC

Both the ends of this cable have the same SAF-D-Grid connector.

CBL-PWR-SG4

Both the ends of this cable have the same SAF-D-Grid connector.

Europe

16 A, 250 VAC

IEC 316P6

CBL-JNP-SG4-316P6

North America and Canada

20 A, 250 VAC

IEC 320P6

CBL-JNP-SG4-320P6

LEDs on the High-Voltage Power Supply Used in QFX5120-48T Switches

Figure 16 shows the location of the LEDs on the high-voltage power supply used in QFX5120-48T switches.

Figure 16: LEDs on the High-Voltage Power Supply Used in QFX5120-48T SwitchesLEDs on the High-Voltage Power Supply Used in QFX5120-48T Switches
  1
—

AC LED (labeled AC )

  3
—

Fault LED (labeled !)

  2
—

DC LED (labeled DC)

 

Table 23 describes the LEDs on the high-voltage power supply used in QFX5120-48T switches.

Table 23: LEDs on the High-Voltage Power Supply Used in QFX5120-48T Switches

LED Label

Color

State

Description

AC

Green

On steadily

The power supply is receiving power.

Unlit

Unlit

  • The power supply is disconnected from power, or the power supply is not receiving power.

  • The AC power cord or DC input cables might not be installed properly, or the power input voltage might not be within normal operating range.

DC

Green

On steadily

The power supply is sending out power correctly.

Unlit

Unlit

  • The power supply is disconnected from power, or the power supply is not receiving power.

  • The AC power cord or DC input cables might not be installed properly, or the power input voltage might not be within normal operating range.

  • The power supply might have an internal failure.

! (Fault)

Amber

On steadily

An error is detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.