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EX3400 Power System

AC Power Supply in EX3400 Switches

The AC power supplies in EX3400 switches are hot-insertable and hot-removable field-replaceable units (FRUs): You can install them without powering off the switch or disrupting the switching function. The switch is shipped with one power supply installed.

Note:

After powering on the switch, wait for at least 60 seconds before powering it off. After powering off the switch, wait for at least 60 seconds before powering it back on.

If only one power supply is installed in your EX3400 switch, you need to power off the switch before removing the power supply.

Table 1 lists the power consumed by each EX3400 switch model. The maximum power available on a PoE+ port is 30 W.

Table 1: Power Consumed by EX3400 Switches

Model Number

Number of PoE-Enabled Ports

Maximum Power Consumed by the Switch

Maximum System Power Available for PoE

EX3400-24T

–

100 W

–

EX3400-24P

24

110 W

  • 720 W with two 600 W power supplies installed

  • 370 W with one 600 W power supply installed

EX3400-48T

–

120 W

–

EX3400-48T-AFI

–

120 W

–

EX3400-48P

48

120 W

  • 1440 W with two 920 W power supplies installed

  • 740 W with one 920 W power supply installed
Note:

In EU countries, Egypt, Nigeria, Saudi Arabia, Serbia, South Korea, and South Africa, you must ensure that the redundant power supply is installed in the switch chassis.

See Also

AC Power Supply LEDs in EX3400 Switches

Figure 1 shows the location of the LEDs on an AC power supply for an EX3400 switch.

Figure 1: AC Power Supply LEDs in an EX3400 SwitchAC Power Supply LEDs in an EX3400 Switch
  1
—

DC OK LED

  2
—

AC OK LED

Table 2 describes the AC power supply LEDs.

Table 2: AC Power Supply LEDs in EX3400 Switches

LED

Color

Description

AC OK

Unlit

Indicates one of the following:

  • AC power input voltage is not within normal operating range.

  • No AC power input.

Green

Power supply is receiving proper input power.

DC OK

Unlit

Indicates one of the following:

  • IN OK LED is unlit.

  • The power supply is not delivering power correctly.

Green

The power supply is delivering power and is functioning correctly.

Red

The power supply has failed and must be replaced.
Note:

If the AC OK LED and the DC OK LED are not lit green, either the AC power cord is not installed properly or the power input voltage is not within normal operating range.

If the AC OK LED is lit green and the DC OK LED is unlit or lit red, the AC power supply is installed properly, but the power supply has an internal failure.

AC Power Cord Specifications for EX3400 Switches

A detachable AC power cord is supplied with the AC power supplies. The coupler 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 (approximately 14.75 feet) 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 3 gives the AC power cord specifications for the countries and regions listed in the table.

Table 3: AC Power Cord Specifications

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

SS-00259 Type VCTF

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

125 VAC, 15 A, 60 Hz

NEMA 5-15 Type N5-15

CBL-PWR-C13-US-48P

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 2 illustrates the plug on the power cord for some of the countries or regions listed in Table 3.

Figure 2: AC Plug TypesAC Plug Types

DC Power Supply in EX3400 Switches

The DC power supplies in EX3400 switches are hot-insertable and hot-removable field-replaceable units (FRUs): You can install them without powering off the switch or disrupting the switching function. The switch is shipped with one power supply installed.

Note:

After powering on the switch, wait for at least 60 seconds before powering it off. After powering off the switch, wait for at least 60 seconds before powering it back on.

If only one power supply is installed in your EX3400 switch, you need to power off the switch before removing the power supply.

Table 4 lists the power consumed by a DC-powered EX3400 switch model.

Table 4: Power Consumed by a DC-Powered EX3400 Switch

Model Number

Number of PoE-Enabled Ports

Maximum Power Consumed by the Switch

Maximum System Power Available for PoE

EX3400-24T-DC

–

110 W

–

EX3400-48T-DC

–

120 W

–

Characteristics of a DC Power Supply

EX3400 switches support 150 W DC power supply.

You can install up to two DC power supplies in an EX3400 switch. Power supplies are installed in the power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

Table 5 lists the details of the power supplies used in EX3400 switches.

Table 5: Details of the DC Power Supplies in EX3400 Switches

Details

150 W DC Power Supply

Model number

JPSU-150-DC-AFO

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Power supply weight

1.433 lb (0.65 kg)

Minimum installed in chassis

1

Maximum installed in chassis

2

Power supply slots

Install in power supply slots in the rear panel of the chassis.

Fans

Internal

Airflow

Front-to-back, indicated by label AIR OUT

Power supply status LEDs

IN OK and OUT OK

To prevent electrical injury while installing or removing DC power supplies, carefully follow the instructions given in Installing a DC Power Supply in an EX3400 Switch and Removing a DC Power Supply from an EX3400 Switch.

DC Power Supply Airflow

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

Each power supply has a label AIR OUT on the faceplate of the power supply that indicates the direction of airflow in the power supply.

Table 6 lists the DC power supply models and the direction of airflow in them.

Table 6: Airflow Direction in DC Power Supply Models for EX3400 Switches

Model

Label on Power Supply

Direction of Airflow

JPSU-150-DC-AFO

AIR OUT

Front-to-back—that is, 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.

DC Power Supply LEDs in EX3400 Switches

Figure 3 shows the LEDs on a DC power supply for an EX3400 switch.

Figure 3: LEDs on the DC Power Supply for EX3400 SwitchesLEDs on the DC Power Supply for EX3400 Switches
  1
—

OUT OK LED

  2
—

IN OK LED

Table 7 describes the LEDs on the DC power supplies.

Table 7: DC Power Supply LEDs on an EX3400 Switch

Name

Color

Description

IN OK

Unlit

Indicates one of the following:

  • The power supply is disconnected from the DC power feed.

  • The DC power input voltage is not within the normal operating range.

  • No DC power input.

Green

The power supply is receiving power.

OUT OK

Unlit

Indicates one of the following:

  • IN OK LED is unlit.

  • The power supply is not delivering power correctly.

Green

The power supply is functioning correctly.

Red

The power supply has failed and must be replaced.

Power Specifications for EX3400 Switches

This topic describes the power supply electrical specifications for EX3400 switches.

Table 8 provides the AC power supply electrical specifications for EX3400 switches.

Table 8: AC Power Supply Electrical Specifications for EX3400 Switches

Item

Specification

AC input voltage

100 through 240 VAC

AC input line frequency

50 Hz/60 Hz nominal

AC system current rating

  • EX3400-24P: 8.5 A at 100 VAC

  • EX3400-24P: 4.25 A at 240 VAC

  • EX3400-24T: 3 A at 100 VAC

  • EX3400-24T: 1.5 A at 240 VAC

  • EX3400-48P: 12 A at 100 VAC

  • EX3400-48P: 6.5 A at 240 VAC

  • EX3400-48T: 3 A at 100 VAC

  • EX3400-48T: 1.5 A at 240 VAC

Table 9 provides the DC power supply electrical specifications for EX3400 switches.

Table 9: DC Power Supply Electrical Specifications for EX3400 Switches

Item

Specification

DC input voltage

–48 through –60 VDC

DC input current rating

4.7 A maximum at –48 VDC

Power supply output

150 W
Note:

For DC power supplies, we recommend that you provide at least 4.7 A at 48 VDC and use a facility circuit breaker rated for 10 A minimum. Doing so enables you to operate the switch in any configuration without upgrading the power infrastructure, and enables the switch to function at full capacity using multiple power supplies.