Power Guidelines, Requirements, and Specifications

All Services Routers are available with AC power. J2350, J4350, and J6350 routers are also available with DC power. For information about each router's power system, see J4350 Power System and J6350 Power System.

For site wiring and power system guidelines, requirements, and specifications, see the following sections:

• Site Electrical Wiring Guidelines
• Router Power Requirements
• AC Power, Connection, and Power Cord Specifications
• DC Power, Connection, and Power Cable Specifications
• Planning for Power Management

Site Electrical Wiring Guidelines

Warning: Certain ports on the router are designed for use as intrabuilding (within-the-building) interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 4) and require isolation from the exposed outside plant (OSP) cabling. To comply with NEBS requirements and protect against lightening surges and commercial power disturbances, the intrabuilding ports must not be metallically connected to interfaces that connect to the OSP or its wiring. The intrabuilding ports on the router are suitable for connection to intrabuilding or unexposed wiring or cabling only. The addition of primary protectors is not sufficient protection for connecting these interfaces metallically to OSP wiring.

Warning: DC-powered J2350, J4350 and J6350 Services Routers are intended for installation only in a restricted access location.

When planning the electrical wiring at your site, consider the factors discussed in the following sections.

Signaling Limitations

Improperly installed wires can emit radio interference. In addition, the potential for damage from lightning strikes increases if wires exceed recommended distances, or if wires pass between buildings. The electromagnetic pulse (EMP) caused by lightning can damage unshielded conductors and destroy electronic devices. If your site has previously experienced such problems, you might want to consult experts in electrical surge suppression and shielding.

Radio Frequency Interference

You can reduce or eliminate the emission of radio frequency interference (RFI) from your site wiring by using twisted-pair cable with a good distribution of grounding conductors. If you must exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.

Electromagnetic Compatibility

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, you might want to seek expert advice. Strong sources of electromagnetic interference (EMI) can destroy the signal drivers and receivers in the router and conduct power surges over the lines into the equipment, resulting in an electrical hazard. It is particularly important to provide a properly grounded and shielded environment and to use electrical surge-suppression devices.

Caution: To comply with intrabuilding lightning/surge requirements, intrabuilding wiring must be shielded, and the shield for the wiring must be grounded at both ends.

Router Power Requirements

Table 34 and Table 35 list the AC and DC power system electrical specifications for Services Routers.

Table 34: AC and DC Power System Electrical Specifications for J2320 and J2350 Routers

Table 35: AC and DC Power System Electrical Specifications for J4350 and J6350 Routers

AC Power, Connection, and Power Cord Specifications

Note: The AC power cord for the Services Router is intended for use with the router only and not for any other use.

Detachable AC power cords, each 2.5 m (approximately 8 ft) long, are supplied with the Services Router. The appliance coupler at the female end of the cord inserts into the appliance inlet on the faceplate of the AC power supply. The coupler is type C19 as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source receptacle that is standard for your geographical location.

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 supplied with the router are in compliance.

Table 36 lists AC power cord specifications provided for each country or region.

Table 36: AC Power Cord Specifications

Figure 41 illustrates the plug on the power cord for each country or region listed in Table 36.

Figure 41: AC Plug Types

Note: Power cords and cables must not block access to router components or drape where people might trip on them.

For information about the AC power supply, see J2320 Power System, J2350 Power System, J4350 Power System or J6350 Power System.

To connect the power cord during initial installation, see Connecting Power.

To replace the AC power cord, see Replacing AC Power Supply Cords.

DC Power, Connection, and Power Cable Specifications

Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated circuit breaker:

• J2350 routers—minimum 15 A (–48 VDC)
• J4350 and J6350 routers—minimum 25 A (–48 VDC)

If the J6350 router contains redundant DC power supplies, one power supply must be powered by a dedicated power feed derived from feed A, and the other power supply 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.

Most sites distribute DC power through a main conduit that leads to frame-mounted DC power distribution panels, one of which might be located at the top of the rack that houses the router. A pair of cables (one input and one return) connects each set of terminal studs to the power distribution panel.

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: Power plant ground and chassis ground must be connected to the same building ground.

Caution: Before router 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 router.

Each DC power cable (–48 VDC and return) must be 14 AWG single-strand wire cable, or as permitted by the local code. Each lug attached to the power cables must be a ring-type, vinyl-insulated TV14-6R lug, or equivalent.

Note: Power cords and cables must not block access to router components or drape where people might trip on them.

For information about the DC power supply, see J2350 Power System, J4350 Power System or J6350 Power System.

To connect the DC power cable during initial installation, see Connecting DC Power.

To replace a DC power cable, see Replacing DC Power Supply Cables.

Planning for Power Management

Before you install a chassis or add a new PIM to an existing chassis, verify that the combination of PIMs and modules (PIMs or PIMs plus a WXC Integrated Services Module) to be installed does not exceed the power and heat capacities for that model. Add the low-power tokens, high-power tokens, and heat tokens required by each PIM, and compare them to the capacity of the chassis.

Note: The low power and high power correspond to a specific voltage for that PIM.

Caution: Do not install a combination of modules in a single chassis that exceeds the maximum power and heat capacity of the chassis. If J Series power management is enabled, PIMs and modules (PIMs or PIMs plus a WXC Integrated Services Module) that exceed the maximum power and heat capacity remain offline when the chassis is powered on.

To verify that the combination of PIMs to be installed in a chassis does not exceed the power and heat capacities for that model:

1. Check Table 37 to determine the token values for low-power, high-power, and heat for each PIM that you plan to install in the chassis.
2. For all PIMs to be installed in the chassis:
   1. Add the low-power tokens for all PIMs to be installed in the chassis.
   2. Add the high-power tokens for all PIMs to be installed in the chassis.
   3. Add the heat dissipation tokens for all PIMs to be installed in the chassis.
3. Verify that the total number of low-power tokens, total number of high-power tokens, and the total number of heat dissipation tokens do not exceed the maximums permitted for your J Series chassis as specified in Table 38.

Table 37 shows the low-power consumption, high-power consumption, and heat dissipation, represented in non-dimensional tokens, assigned to each J Series PIM.

Table 37: J Series PIM Power Consumption and Heat Dissipation

Table 38 lists the maximum power tokens and maximum heat tokens available for each model.

Table 38: Maximum Power and Heat Capacities of J Series Models