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QFX5240 Power System

The QFX5240 switch is powered by two 3000‑W redundant AC (QFX5240-PWR-AC-AO) power supply modules (PSMs). The power supply modules support front-to-back airflow (airflow out or AFO). The PSMs are fully redundant, load-sharing, and hot-removable and hot-insertable FRUs when the second PSM is installed and running. You can remove and replace the PSMs without powering off the switch or disrupting switch functions.

The two PSMs together can supply double the power needed to power all the components in the switch. When the switch has both the PSMs installed, the switch has full power redundancy. If a PSM fails or is removed, the second PSM balances the electrical load without interruption.

The PSMs for the QFX5240 are located on the FRU panel.

Figure 1: QFX5240 FRU Panel QFX5240 FRU Panel
  1
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Power Supply Modules (PSM)

  2
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Fan Modules

QFX5240 AC Power Supply Module Description

Each 3000‑W AC power supply module (PSM) has a single AC input and provides 12‑V power to the system. The PSM's output power is 2.7 KW for the input voltage range of 200 VAC through 240 VAC. See Figure 2.

Figure 2: AC Power Supply Module AC Power Supply Module
  1
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Power connector

  4
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Handle

  2
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PSM LED

  5
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Velcro strap for cable management

  3
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Ejection lever

 

AC Power Cord Specifications

Detachable AC power cords are shipped with the chassis if you include them as part of your order.

Note:

In North America, AC power cords must not exceed 14.75 feet (approximately 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 that can be ordered for the QFX Series switches are in compliance.

Table 1 lists AC power cord specifications provided for each country or region.

Table 1: AC Power Cord Specifications

Country/Region

Electrical Specifications

Plug Standards

Juniper Model Number

Argentina

250 VAC, 16 A, 50 Hz

C19 IRAM to C19

CBL-EX-PWR-C19-AR

Brazil

250 VAC, 16 A, 50 Hz

KC-059-A Plug (NBR14136) to KC-003A Connector (EN 60320 C19)-

CBL-PWR-C19-BR-2M

China

250 VAC, 16 A, 50 Hz

Straight plug to Straight C19

CBL-EX-PWR-C19-CH

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 16 A, 50Hz

RA Plug (IEC 60884-1) to Straight C19 Connector (EN 60320)

CBL-PWR-C19-EU-2M

Great Britain

250 VAC, 16 A, 50 Hz

RA Plug (IEC 60884-1) to Straight C19 Connector (EN 60320)

BL-EX-PWR-C19-INT

India

250 VAC, 16 A, 50 Hz

RA KC-016 Plug (IS1293) to Straight KC-003A Connector (EN 60320 C19)

CBL-PWR-C19-IN-2M

Israel

250 VAC, 16 A, 50 Hz

RA KC-057 Plug (SI 473) to Straight KC-003A Connector (EN 60320 C19)

CBL-PWR-C19-IL-2M

Italy

250 VAC, 16 A, 50 Hz

Straight, KC-050N Plug (CEI.23-16-V II)) to KC-003A Connector (EN 60320 C19)-

CBL-PWR-C19-IT-2M

Japan

250 VAC, 20 A, 50/60 Hz

Straight,Plug (JIS C8303) to C19 Connector (EN 60320)

CBL-PWR-C19-JP-2M

South Africa

250 VAC, 16 A, 50 Hz

RA KC-016 Plug (SABS 164-1) to KC-003A Connector (EN 60320 C19)

CBL-PWR-C19-SA-2M

South Korea

250 VAC, 16 A, 50 Hz

Straight, KC-024 Plug (KSC8305) to KC-003A Connector (EN 60320 C19)-

CBL-PWR-C19-KR-2M

Switzerland

250 VAC, 16 A, 50 Hz

Straight, KC-051N Plug (SEV 1011) to KC-003A Connector (EN 60320 C19)-

CBL-PWR-C19-SZ-2M

Universal

250 VAC, 16 A, 50 Hz

Straight,C20 Plug (EN 60320) to C19 Connector (EN 60320)-

CBL-PWR-C19-C20-2M

USA

250 VAC, 20 A, 50 Hz

RA Plug (NEMA 6-20P) to Straight C19 Connector (EN 60320)-

BL-PWR-C19-US-2M

QFX5240 AC Power Supply Module LED

Each QFX5240 power supply module (PSM) has a single LED on the module faceplate to indicate the power status.

Figure 3 shows the AC power supply LED.

Figure 3: QFX5240 AC Power Supply LED QFX5240 AC Power Supply LED

  1. PSM LED

The PSM uses an amber and green bicolored LED to indicate the operating state. See Table 2.

Table 2: QFX5240 AC PSM LED Color and State

LED Color

PSM State

Off

The PSM does not have AC power.

Solid green

The PSM is on and functioning properly.

Blinking green (1 sec./on, 1 sec./off, 0.5Hz)

The PSM is in standby state or the other PSM in the chassis is on with 12 VSB (vestigial sideband).

Blinking green (0.25 sec./on, 0.25 sec./off, 2Hz)

The PSM is in redundant/offline mode.

Solid amber

Standby mode with OTP The PSM shuts down because of a critical event such as high temperature, high power, high current, or fan failure.

12V Fault (OVP, UVP, OCP, SCP and OTP)

Fan stopped working for 15 seconds and standby mode.