SRX5600 Power System

The firewall uses either AC or DC power supplies. The firewall is configurable with two, three, or four AC power supplies or two or four DC power supplies. The power supplies are located horizontally at the rear of the chassis in slots PEM0 through PEM3 (left to right). The power supplies connect to the midplane, which distributes the different output voltages produced by the power supplies to the firewall components, depending on their voltage requirements. Each power supply is cooled by its own internal cooling system.

CAUTION:

The firewall cannot be powered from AC and DC power supplies simultaneously. The first type of power supply detected by the firewall when initially powered on determines the type of power supply allowed by the firewall. All installed power supplies of the other type are disabled by the firewall. If you install a power supply of the other type while the firewall is operating, the firewall disables the power supply and generates an alarm.

Redundant power supplies are hot-removable and hot-insertable. When you remove a power supply from a firewall that uses a nonredundant power supply configuration, the firewall might shut down depending on your configuration.

Depending on the types of power supplies installed and their input voltages, the power distribution in the firewall chassis is either shared or zoned. Table 1 summarizes the available power supply types, their output capacities, and their redundancy and power distribution schemes. For detailed power supply specifications, see SRX5600 Firewall AC Power Supply Specifications or SRX5600 Firewall DC Power Supply Specifications.

Table 1: Power Supply Type Summary

Power Supply Type	Input Condition (If Any)	Maximum Output	Redundancy	Power Distribution
AC standard-capacity	Low-line (110 V Input)	1027 W	3+1	Shared
	High-line (220 V Input)	1590 W	2+2
AC high-capacity	Low-line (110 V Input)	1167 W	3+1
	High-line (220 V Input)	2050 W	2+2
DC standard-capacity		1600 W	2+2 (1+1 per zone)	Zoned
DC high-capacity	DIP=0 (60 A Input)	2240 W	2+2 (1+1 per zone)
	DIP=1 (70 A Input)	2440 W	2+2 (1+1 per zone)

Note:

The firewall must be running Junos OS Release 12.1X44-D10 or later in order to use high-capacity AC or DC power supplies.

When AC power supplies are installed, the power distribution is shared. All of the power supply power to all of the components in the firewall chassis. The power supplies share the load almost equally. In the low-line (110VAC input) configuration, three power supplies are required to support the firewall electrical requirements, and you can install an additional power supply that takes over in case any of the other three fail. In the high-line (220VAC input) configuration, two power supplies are required to support the firewall electrical requirements, and you can install one or two additional power supplies that will over in case any of the others fail. In the two-PEM high-line configuration, slots PEM0 and PEM1 or PEM2 and PEM3 are used.

When DC power supplies are installed, the power distribution is zoned. The chassis is divided into two zones numbered 0 and 1. Each zone is powered by one or two power supplies. Two power supplies are required to support the firewall electrical requirements, and you can install two additional power supplies so that each zone has an extra power supply that takes over in case the first power supply fails. Table 2

Table 2: SRX5600 Firewall Power Distribution (DC Power Supplies)

Zone	Power Supplies	Provide Power To:
Zone 0	PEM0 or PEM2	Bottom slots 0 and 1 for SCBs Card slots 0 and 1 for SPCs or interface cards (IOCs, Flex IOCs, or MPCs)
Zone 1	PEM1 or PEM3	Card slots 2 through 5 for SPCs or interface cards (IOCs, Flex IOCs, or MPCs)

Each AC power supply consists of one AC appliance inlet, an AC switch, a fan, and LEDs to monitor the status of the power supply. Figure 1 and Figure 2 show the power supplies. For standard-capacity power supplies, each inlet requires a dedicated AC power feed and a dedicated 15 A (250 VAC)circuit breaker. For high-capacity power supplies, each inlet requires a dedicated AC power feed and a dedicated 16 A @ 100 VAC or 16 A @ 200 VAC circuit breaker, or as required by local code.

Note:

The firewall must be running Junos OS Release 12.1X44-D10 or later in order to use high-capacity AC power supplies.

Warning:

The firewall is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal (sized for UNC 1/4-20 ground lugs) provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connected to earth.

Table 3 lists the AC power supply electrical specifications.

Table 4 lists the AC power system electrical specifications.

Table 3: AC Power Supply Electrical Specifications

Item	Specification
	Standard-Capacity	High-Capacity
Maximum output power	1027 W (low line) 1590 W (high line)	1167 W (low line) 2050 W (high line)
AC input current rating	14.5 A @ 110 VAC maximum 11.0 A @ 200 VAC maximum	16 A @ 110 VAC maximum 15.1 A @ 200 VAC maximum
AC input voltage	Operating range: 100 - 240 VAC (nominal)
AC input line frequency	50 to 60 Hz (nominal)

Table 4: AC Power System Specifications

Item	Normal-Capacity Low-Line (110V)	Normal-Capacity High-Line (220V)	High-Capacity Low-Line (110V)	High-Capacity High-Line (220V)
Redundancy	3+1	2+2	3+1	2+2
Output power (maximum) per power supply	1027 W	1590 W	1167 W	2050 W
Output power (maximum) per system	3081 W	3180 W	3501 W	4100 W

Each AC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 5). The power supply status is also reflected in two LEDs on the craft interface. In addition, a power supply failure triggers the red alarm LED on the craft interface.

Table 5: AC Power Supply LEDs

Label	Color	State	Description
AC OK	Amber	Off	AC power input voltage is below 78 VAC.
	Green	On	AC power input voltage is within 78–264 VAC.
DC OK	Green	Off	DC power outputs generated by the power supply are not within the normal operating ranges.
		On	DC power outputs generated by the power supply are within the normal operating ranges.
PS FAIL	Red	Off	Power supply is functioning normally.
		On	Power supply is not functioning normally and its output voltage is out of regulation limits. Check AC OK and DC OK LEDs for more information.

Each AC power supply has a single AC appliance inlet located on the power supply that requires a dedicated AC power feed. Most sites distribute power through a main conduit that leads to frame-mounted power distribution panels, one of which can be located at the top of the rack that houses the firewall. An AC power cord connects each power supply to the power distribution panel.

The firewall is not shipped with AC power cords. You must order power cords separately using the model number shown in Table 6. The C19 appliance coupler end of the cord inserts into the AC appliance inlet coupler, type C20 (right angle) as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source receptacle that is standard for your geographical location.

Table 6 provides specifications and Figure 3 depicts the plug on the AC power cord provided for each country or region.

Table 6: AC Power Cord Specifications

Country	Model Number	Electrical Specification	Plug Type
Australia	CBL-M-PWR-RA-AU	240 VAC, 50 Hz AC	SAA/3/15
China	CBL-M-PWR-RA-CH	220 VAC, 50 Hz AC	CH2-16P
Europe (except Denmark, Italy, Switzerland, and United Kingdom)	CBL-M-PWR-RA-EU	220 or 230 VAC, 50 Hz AC	CEE 7/7
Italy	CBL-M-PWR-RA-IT	230 VAC, 50 Hz AC	CEI 23-16/VII
Japan	CBL-PWR-RA-JP15	125 VAC, 50 or 60 Hz AC	JIS 8303
	CBL-M-PWR-RA-JP	220 VAC, 50 or 60 Hz AC	NEMA L6-20P
North America	CBL-PWR-RA-US15	125 VAC, 60 Hz AC	NEMA 5-15P
	CBL-PWR-RA-TWLK-US15	125 VAC, 60 Hz AC	NEMA L5-15P
	CBL-M-PWR-RA-US	250 VAC, 60 Hz AC	NEMA 6-20
	CBL-M-PWR-RA-TWLK-US	250 VAC, 60 Hz AC	NEMA L6-20P
United Kingdom	CBL-M-PWR-RA-UK	240 VAC, 50 Hz AC	BS89/13

Warning:

The AC power cord for the firewall is intended for use with the firewall only and not for any other use.

Warning:

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must properly ground the firewall chassis before connecting power. See Grounding the SRX5600 Firewall for instructions.

CAUTION:

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

Note:

In North America, AC power cords must not exceed 4.5 m (approximately 14.75 ft) 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 listed in Table 6 are in compliance.

Each AC power supply has a single AC appliance inlet located on the power supply that requires a dedicated AC power feed. We recommend that you use a customer site circuit breaker rated for 15 A (250 VAC) minimum for each AC power supply, or as required by local code. Doing so enables you to operate the firewall in any configuration without upgrading the power infrastructure.

Each DC power supply consists of one DC input (–48 VDC and return), one 40 A (–48 VDC) circuit breaker, a fan, and LEDs to monitor the status of the power supply. Two different DC power supply types are available. Figure 4 and Figure 5 show the power supplies. Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated facility circuit breaker.

For high-capacity power supplies, we recommend that you provision 60 A or 70 A per feed, depending on the selected DIP switch setting.

Note:

The firewall must be running Junos OS Release 12.1X44-D10 or later in order to use high-capacity DC power supplies.

Table 7 lists the DC power supply electrical specifications. Table 8 lists the DC power system specifications.

Table 7: DC Power Supply Electrical Specifications

Item	Specification
	Standard-Capacity	High Capacity
		DIP=0 (60 A Input)	DIP=1 (70 A Input)
Maximum output power	1600 W	2240 W	2440 W
DC input voltage	Minimum: –40.5 VDC Nominal: –48 VDC Operating range: –40.5 to –72 VDC
DC input current rating	33.3 A @ –48 V nominal operating voltage	50 A @ –48 V nominal operating voltage	54.2 A @ –48 V nominal operating voltage
Internal Supplementary Protector	40 A	None	None

Table 8: DC Power System Specifications

Item	Specification
	Standard-Capacity	High Capacity
		DIP=0 (60 W Input)	DIP=1 (70 W Input)
Redundancy	2+2	2+2	2+2
Output power (maximum) per power supply	1600 W	2240 W	2440 W
Output power (maximum) per system	3200 W	4800 W	5200 W

Each DC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 9). In addition, a power supply failure triggers the red alarm LED on the craft interface.

Note:

An SCB must be present for the PWR OK LED to go on.

Table 9: DC Power Supply LEDs

Label	Color	State	Description
PWR OK	Green	Off	Power supply is not functioning normally. Check the INPUT OK LED for more information.
		On	Power supply is functioning normally.
	Amber	On	The main output voltage is out of range (lower limit: 37.5 V to 39.5 V; upper limit: 72.5 V to 76 V).
BRKR ON	Green Green	Off	DC power supply circuit breaker is turned off.
		On	DC power input is present and the DC power supply circuit breaker is turned on.
INPUT OK	Green	Off	DC input to the PEM is not present.
		On	DC input is present and is connected in correct polarity.
	Amber	On	DC input is present, but not in valid operating range or connected in reverse polarity.

Table 10 summarizes the specifications for the power cables, which you must supply.

Table 10: DC Power Cable Specifications

Cable Type	Quantity	Specification
Power	Four 6-AWG (13.3 mm2) cables for each power supply	Minimum 60°C wire, or as required by the local code

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.

The accessory box shipped with the firewall includes the cable lugs that attach to the terminal studs of each power supply (see Figure 6).

CAUTION:

Before firewall installation begins, 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 firewall.

Warning:

The firewall is a pluggable type A equipment installed in restricted access location. It has a separate protective earthing terminal [Metric -M6 and English - ¼-20 screw) ground lugs] provided on the chassis. This separate protective earth terminal must be permanently connected to earth.

Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated facility circuit breaker. We recommend that you use a customer site circuit breaker rated for 40 A (–48 VDC) minimum for each DC power supply, or as required by local code. Doing so enables you to operate the firewall in any configuration without upgrading the power infrastructure.

If you plan to operate a DC-powered firewall at less than the maximum configuration and do not provision a 40 A (–48 VDC) circuit breaker, we recommend that you provision a circuit breaker for each DC power supply rated for at least 125% of the continuous current that the system draws at –48 VDC, or as required by local code.

Figure 7 shows a typical DC source cabling arrangement.

The DC power supplies in slots PEM0 and PEM1 must be powered by dedicated power feeds derived from feed A, and the DC power supplies in slots PEM2 and PEM3 must be powered by dedicated power feeds 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.

Warning:

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must properly ground the firewall chassis before connecting power. See Grounding the SRX5600 Firewall for instructions.

CAUTION:

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

The firewall chassis has one grounding point at the upper right corner of the back panel. The grounding point consists of two threaded holes spaced 0.625-in. (15.86-mm) apart (Figure 8). The grounding point holes fit UNC 1/4–20 screws. The accessory box shipped with the firewall includes the cable lug that attaches to the grounding cable and two UNC 1/4–20 screws used to secure the grounding cable to the firewall grounding point.

You must install the SRX5600 in a restricted-access location and ensure that the chassis is always properly grounded. The SRX5600 has a two-hole protective grounding terminal provided on the chassis. See Figure 8. We recommend that you use this protective grounding terminal as the preferred method for grounding the chassis regardless of the power supply configuration. However, if additional grounding methods are available, you can also use those methods. For example, you can use the grounding wire in the AC power cord or use the grounding terminal or lug on a DC power supply. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

To ground the firewall, you must connect a grounding cable to earth ground and then attach it to the chassis grounding point using the two screws provided.

Note:

Additional grounding is provided to an AC-powered firewall when you plug its power supplies into grounded AC power receptacles.

The accessory box shipped with the firewall includes the cable lug that attaches to the grounding cable (see Figure 9) and two UNC 1/4–20 screws used to secure the grounding cable to the grounding points.

CAUTION:

Before firewall installation begins, 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 firewall.

Note:

The same cable lug is used for the DC power cables.