Campus Networks

How To: Configure Power for Brocade Switches and Routers

by brcd-campus.expert on ‎01-24-2012 11:02 PM - edited on ‎04-18-2014 02:07 PM by pmadduru (1,201 Views)

 

 

BRCD-ENTERPRISE 2473

 

Introduction

This document outlines common approaches for powering Brocade switches and routers in Enterprise data centers and aggregates power supply information for Brocade’s Foundry Networks products. It does not take the place of the professional, licensed power engineering needed for extensive installations.

 

Topic of Discussion

 

Powering Stackable Switches and Routers

Across the Brocade product portfolio, the 1 rack unit, 1.5 rack unit, and 2 rack unit “stackable” sized switches and routers share very similar power configurations. Some products have fixed, internally located power supplies and a power cord connection directly into the rear of the equipment and other products have one or two modular hot-swappable power supplies that snap into the rear of the equipment with power cords that tie into the back of the modular power supply. But all the fixed power supplies are AC power only and the modular power supplies support either AC or DC power supplies and may mix AC and DC supplies in any power supply slot.

 

Figure 1: Modular Power Supplies in Brocade Stackable Switch

 

figure1_2473.jpg

 

 

Stackable Power Cables

When a customer orders a stackable switch, they specify either an all AC or all DC or hybrid AC/DC system. For the AC power systems, Brocade supplies a power cord that connects to the AC power connector on the stackable switch and a typical wall connection. DC supplies ship without power cords, and the customer is expected to connect the DC power supply terminals into their power system using appropriate gauge wire and connections.

 

AC Stackable Power Cables

All AC powered Brocade stackable switches share the same power connector on the back of the equipment or modular power supply--an IEC C14 line socket.

 

Figure 2: IEC C14 Power Socket

 

Figure2_2473.jpg

 

The IEC C14 supports both 110Volt AC (Vac) and 220Volt AC (Vac) connections up to 15Amps nominally, however the US National Electric Code derates the C14 capacity to 12Amps. Brocade AC power supplies support auto-ranging voltage inputs and both US 110Vac or 220Vac 60hz power connections are suitable. Stackable switches typically ship with a 110Vac 12A power cord that connects the C14 to an IEC C13 connector—the typical mating connector for the C13—and cables to a NEMA 5-15 wall plug.

 

 

Figure 3: IEC C13 to NEMA 5-15 Typical 110Vac Power Cord Connectors

 

Figure3_2477.jpg

 

The NEMA 5-15 is a 110Vac connector only, and the customer will need to order a replacement power cord if they wish to power their AC supply with 220Vac. Typically a 220Vac implementation will use a power cord with an IEC C13 on one end and a NEMA 6-20 (or 6-15) on the other. This type of cord is widely availability online and in stores.
 
 

 

Figure 4: IEC C13 to NEMA 6-20 Typical 220Vac Power Cord Connectors

 

Figure4_2477.jpg

 

 

Table 1: Stackable Power Cords (Worldwide)

 

Part Number (name)Equipment ConnectorWall ConnectorCapacityLength
PCAUS IEC 60320-C13 SAA 3-PIN 10A/250V 8'
PCCHINA-250 IEC 60320-C13 IEC 60309013-6 10A/250V 8'
PCCHINA-IEC309 IEC 60320-C13 IEC 60309013-4 10A/110V 8'
PCEURO IEC 60320-C13 CEE 7/7 (Schuko) 10A/250V 8
PCJAPAN IEC 60320-C13 JIS C 8303 (NEMA 5-15) 13A/125V 8'
PCUK IEC 60320-C13 BS1363 10A/250V 8'
PCUSA IEC 60320-C13 NEMA 5-15P 10A/125V 6'
PCUSA-3M IEC 60320-C13 NEMA 5-15P 10A/125V 10'

 

DC Stackable Power Cables

Certain Brocade stackable switches with modular power supplies support central office DC power systems—40Volts DC to 60Volts DC. The rear of these modular power supplies host a three input terminal block with connections for NEG, POS, and GND.

 

Stackable Modular DC Power Supply

Connections from the stackable DC modular power supply to a DC power system don’t use a standard power cable like an AC power supply, but use an insulated copper wire to make individual connections between the DC supply terminals and the power system.

 

Table 2: Recommended DC Power Supply Cabling Gauges

 

Power Supply ModuleRatingWire Gauge
RPS5DC 220W 14 AWG
RPSDC-X424 220W 14 AWG
RPSDC-X424-POE 600W 10 AWG
RPS8-DC 600W 10 AWG
RPSDC-X448 600W 10 AWG

 

 

Typically, the GND connection ties into the building GND system with a low impedance path, the POS ties into a central office -48Volt Return system, and the NEG ties into a central office -48Volt system. Exact connections are application specific and should be wired in consultation with a licensed professional.

 

Stackable Circuit Breakers

Each Brocade stackable power connection should be run through a circuit breaker to ensure electrical isolation from power infrastructure.

 

Table 3: Recommended Power Supply Breaker Sizes

 

Power Supply ModuleRatingAC or DCBreaker
RPS5 220W AC 15A, 110Vac
RPS-X424 220W AC 15A, 110Vac
RPS8 600W AC 15A, 110Vac
RPS-FGS 600W AC 15A, 110Vac
RPS-X424-POE 600W AC 15A, 110Vac
RPS5DC-X424 220W DC 10A, -48Vdc double pull, UL listed
RPSDC-X424 220W DC 10A, -48Vdc double pull, UL listed
RPSDC-X424-POE 600W DC 30A, -48Vdc double pull, UL listed
RPS8-DC 600W DC 30A, -48Vdc double pull, UL listed
RPSDC-X448 600W DC 30A, -48Vdc double pull, UL listed

 

Stackable Power Requirements

In addition to circuit breaker sizes, the power infrastructure behind the Brocade Products must be sufficient to operate the equipment. Table 4 below shows the required power capacity to operate various Brocade stackable switches and routers.

 

Table 4: Recommended Power Capacity per Product

 

Brocade Stackable Switch/RouterNumber of Power SuppliesPower Draw
FES &FESX non POE 1 100W
FES & FESX non POE 1 200W
FES & FESX 2402-POE 1 580W
FES & FESX 2402-POE 2 1160W
FES & FESX 4802-POE 1 580W
FES & FESX 4802-POE 2 1160W

 

Warning

 

Always be careful when working with Electricity. Consult your Electrical Contractor when in doubt. Different States or Countries will have different requirements. Please consult your Electrical codes before installing Brocade Products.

 

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