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
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
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
Table 1: Stackable Power Cords (Worldwide)
|Part Number (name)||Equipment Connector||Wall Connector||Capacity||Length|
|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'|
|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 Module||Rating||Wire Gauge|
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 Module||Rating||AC or DC||Breaker|
|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/Router||Number of Power Supplies||Power 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|
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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