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MX304 Power Planning

Calculating Power Requirements for MX304 Router

Power Requirements for MX304 Components

Table 1 displays the power requirements at different ambient temperatures for the router with two routing engines and two LMICs (100-Gigabit Ethernet ports with QSFP28 transceivers on each LMIC).

Table 1: 3.2 Tbps Capacity Configuration with Two Routing Engines and Two LMICs (100-Gigabit Ethernet Ports on each LMIC)
Module Quantity Each Module Power (W) @ 25° C Each Module Power (W) @ 46° C Total Module Power (W) @ 25° C Total Module Power (W) @ 46° C
Routing Engine (RE) (Active) 1 49 59 49 59
Routing Engine (RE) (Standby) approximate 1 49 59 49 59
Switch Fabric Board (SFB)+Control Board(CB)+Processor Mezzanine Board(PMB) 3 155 228 155 228
LMIC + 16x100-Gigabit Ethernet (5 W transceivers) 2 318 410 636 820
Fans 3 48 90 144 270
Total Chassis Power (W) 1033 1436

Table 2 displays the power requirements at different ambient temperatures for the router with two routing engines and two LMICs (400-Gigabit Ethernet ports with QSFP-DD transceivers on each LMIC).

Table 2: 3.2T Configuration with Two Routing Engine and Two LMICS (400-Gigabit Ethernet ports on each LMIC)
Module Quantity Each Module Power (W) @ 25° C Each Module Power (W) @ 46° C Total Module Power (W) @ 25° C Total Module Power (W) @ 46° C
Routing Engine (Active) 1 49 59 49 59
Routing Engine (Standby) approximate 1 49 59 49 59
Switch Fabric Board (SFB)+Control Board(CB)+Processor Mezzanine Board(PMB) 3 155 228 155 228
LMIC + 4x400-Gigabit Ethernet (20 W transceivers) 2 318 386 636 772
Fans 3 48 90 144 270
Total Chassis Power (W) 1033 1388

Table 3 displays the power requirements at different ambient temperatures for the router with routing engines and three LMICs (100-Gigabit Ethernet Ports with QSFP28 transceivers on each LMIC).

Table 3: 4.8T Configuration with One Routing Engine and Three LMIC (100-Gigabit Ethernet Ports on each LMIC)
Module Quantity Each Module Power (W) @ 25° C Each Module Power (W) @ 46° C Total Module Power (W) @ 25° C Total Module Power (W) @ 46° C
Routing Engine (Active) 1 49 59 49 59
Routing Engine (Standby) approximate 0 49 59 0 0
Switch Fabric Board (SFB)+Control Board(CB)+Processor Mezzanine Board(PMB) 3 185 246 211 246
LMIC + 16x100-Gigabit Ethernet (5 W transceivers) 3 318 410 1029 1230
Fans 3 57 95 225 285
Total Chassis Power (W) 1514 1820

Table 4 displays the power requirements at different ambient temperatures for routers with one routing engine and three LMICs (400-Gigabit Ethernet ports with QSFP-DD transceivers on each LMIC).

Table 4: 4.8T Configuration with One Routing Engine and Three LMIC (400-Gigabit Ethernet Ports on each LMIC)
Module Quantity Each Module Power (W) @ 25° C Each Module Power (W) @ 46° C Total Module Power (W) @ 25° C Total Module Power (W) @ 46° C
Routing Engine (Active) 1 49 59 49 59
Routing Engine (Standby) approximate 0 49 59 0 0
Switch Fabric Board (SFB)+Control Board(CB)+Processor Mezzanine Board(PMB) 3 185 246 211 246
LMIC + 4x400-Gigabit Ethernet (5W transceivers) 3 318 386 954 1158
Fans 3 57 95 225 285
Total Chassis Power (W) 1439 1748

MX304 Router AC Power Specifications

Table 5 lists the AC power system electrical specifications.

Table 5: AC Power Supply Electrical Specifications

Item

Specification

Maximum output power

100V – 120V: 1100W

200V – 240V: 2200W

AC input nominal voltage 100-240 VAC
AC input voltage

Operating range:

90 - 264 VAC

AC input line frequency

47 through 63 Hz (nominal)

AC system current rating

13 A @ 100 VAC through 240 VAC

MX304 Router DC Power Specifications

Table 6 lists the DC power supply electrical specifications.

Table 6: DC Power Supply Electrical Specifications

Item

Specification

Maximum output power

2200 W

DC input voltage

Minimum: –40 VDC

Nominal: –48 VDC, –60 VDC

Operating range: –40 through –72 VDC

DC input current rating

50 A maximum

MX304 Router High-Voltage AC/DC Power Specifications

Table 7 lists the HVAC/DC power system electrical specifications.

Table 7: HVAC/DC Power Supply Electrical Specifications

Item

Specification

Maximum output power

2200 W

HVAC nominal input 200-277 VAC
HVDC nominal input

240-380 VDC

HV input voltage

HVDC: 190 VDC to 410 VDC

HVAC: 180 VAC to 305 VAC

HV input current rating

13 A @ 240 to 380 VDC

13 A @ 200 to 277 VAC

AC Power Cord Specifications for the MX304 Routers

A detachable AC power cord is supplied with the AC power supplies. The coupler is type C19 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.

Detachable AC power cords are shipped with the AC power supplies. Table 8 lists the default power cord that is provided for each country. 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 8 gives the AC power cord specifications for the countries and regions listed in the table.

Table 8: MX304 AC Power Supplies

Country/Region

Electrical Specifications

Plug Standards

Juniper Model Number

Graphic

Argentina

250 VAC, 16 A, 50 Hz

IRAM 2073

CBL-EX-PWR-C19-AR

Australia

250 VAC, 15 A, 50 Hz

AS/NZS 3112

CBL-EX-PWR-C19-AU

Brazil

250 VAC, 16 A, 50 Hz

NBR 14136

CBL-EX-PWR-C19-BR

China

250 VAC, 16 A, 50 Hz

GB 2099

CBL-EX-PWR-C19-CH

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 16 A, 50 Hz

CEE (7) 7

CBL-EX-PWR-C19-EU

India

250 AC, 16 A, 50 Hz

SABS 164/1:1992 Type ZA/3

CBL-EX-PWR-C19-SA

Israel

250 AC, 16 A, 50 Hz

SI 32

CBL-EX-PWR-C19-IL

Italy

250 VAC, 16 A, 50 Hz

CEI 23-16

CBL-EX-PWR-C19-IT

Japan

250 VAC, 15 A, 50 Hz or 60 Hz

NEMA L6-20

CBL-PWR-C19-HT-JP

125 VAC, 15 A, 50 Hz or 60 Hz

NEMA5-15Type N5/15

CBL-EX-PWR-C19-JP110V

Korea

250 VAC, 16 A, 50 Hz

KC 8305

CBL-EX-PWR-C19-KR

North America

250 VAC, 20 A 50 Hz or 60 Hz

Nema 6-20

CBL2-PTX-SP-US-N

250 VAC, 20 A 50 or 60 Hz

NEMA L6-20

CBL2-PTX-SP-US-L

South Africa

250 VAC, 16 A, 50 Hz

SABS 164-1

CBL-EX-PWR-C19-SA

Switzerland

250 VAC, 16 A, 50 Hz

SEV 5934/2 (Type 23 16A plug)

CBL-EX-PWR-C19-SZ

United Kingdom

250 VAC, 13 A, 50 Hz

BS 1363(A)

CBL-EX-PWR-C19-UK

Worldwide (except Japan)

250 VAC, 16 A, 50 Hz

EN 60320-2-2/1

CBL-EX-PWR-C19-C20

DC Power Circuit Breaker Requirements for the MX304 Router

Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated circuit breaker. We recommend that you use a dedicated customer-site circuit breaker rated for 60 A (60 VDC), or as required by local code. Doing so enables you to operate the router in any configuration without upgrading the power infrastructure.

DC Power Cable Specifications for the MX304 Router

DC Power Cable Lug Specifications

The accessory box shipped with the router includes the cable lugs that attach to the terminal of each power supply.

The DC power cable lug is provided. The DC power lug accommodates #6 AWG (4.11 mm²) stranded wire. The grounding cable that you provide for the chassis must be the same size or heavier than the input wire of each power supply. Minimum recommendations are 6 AWG (4.11 mm²) stranded wire, minimum 60°C wire, or as permitted by local code.

Install heat-shrink tubing insulation around the power cables at the connection point of the DC power supply terminal.

Figure 1: DC Power Cable Lug DC Power Cable Lug
CAUTION:

Before you install the router, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router.

DC Power Cable Specifications

You must supply four DC power cables that meet the following specifications: 6 AWG (4.11 mm²) stranded wire,minimum 60°C wire, or as permitted by local code.

Note:

Install heat-shrink tubing insulation around the power cables at the connection point of the DC power supply terminal.

DC Power Source Cabling for MX304 Router

The DC power supply in PSM0 must be powered by a dedicated power feed derived from feed A, and the DC power supply in PSM1 must be powered by a dedicated power feed derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system.

CAUTION:

You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminal studs on each power supply.

Warning:

For field-wiring connections, use copper conductors only.

CAUTION:

Power cords and cables must not block access to device components or drape where people could trip on them.

High-Voltage (AC/DC) Power Cable Specifications for the MX304

One end of the cable has an Anderson APP-400 connector, the other end of the cable is bare wire. See Table 9 . These cables are separately orderable and are not shipped automatically with power supply orders. An example of the right-angle cable and connector is shown in Figure 3 .

For connection to AC systems, Juniper provides a cable with either a NEMA I7-20P connector (see Figure 2).

Figure 2: NEMA I7-20P Connector NEMA I7-20P Connector
Table 9: 30-A Cabling Options

Locale

Cord Set Rating

Connector

Spare Juniper Model Number

HVDC power cord

Any

30- A, 400 VAC

Anderson/straight to bare wire

CBL-PWR2-BARE

HVAC power cord

North America 20 A, 277 V NEMA I7-20P CBL-JNP-SG4-HVAC
Figure 3: Straight, Bare Cable with Anderson Connector Straight, Bare Cable with Anderson Connector
  1

Black wire–Return (+)

  3

White wire–Neutral

  2

Green wire-Ground