Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

T640 AC Power Requirements

 

To allow for future growth so that you can operate the router in any hardware configuration without upgrading the power infrastructure, we recommend that you provision 11,765 W per each three-phase delta AC power supply or 11,775 W per each three-phase wye AC power supply.

If you do not plan to provision 11,765 W per each three-phase delta AC power supply or 11,775 W per each three-phase wye AC power supply, you can use the information in Table 1, Table 2 and the T640 Core Router Interface Module Reference to calculate power consumption for various hardware configurations, input current from a different source voltage, and thermal output, as shown in the following examples for an AC-powered router.

Table 1 lists the power requirements for various hardware components when the router is operating under typical voltage conditions. For power requirements for specific PICs, see the T640 Core Router Interface Module Reference.

Table 1: T640 Base AC Power Requirements

Component

Power Requirement (Watts)

Base system, not including FPCs and PICs (includes five SIBs, one host subsystem (T-CB and 600, 1600, or 2000 Routing Engine ), one SCG, cooling system at normal speed, and craft interface), and two AC power supplies

954 W

Table 2: Typical AC Power Requirements for T640 Components

Component

Power Requirement (Watts)

Power Requirement (Watts) with 85% Efficiency

SIB: Standard SIB, standard SIB version B, or T640-SIB

38 W

44 W

Enhanced II FPC1

163.2 W

192 W

Enhanced Scaling FPC1

340.8 W

401 W

FPC2 and Enhanced II FPC2

163.2 W

192 W

FPC3 and Enhanced II FPC3

326.4 W

384 W

Enhanced Scaling FPC3

437.28 W

514 W

T640 Enhanced Scaling FPC4

393.6 W

463 W

Host subsystem (600, 1600, or 2000 Routing Engine and T-CB)

124.8 W

147 W

SCG

9.6 W

11 W

Redundant backup three-phase delta AC power supply

Not applicable

91 W

Redundant backup three-phase wye AC power supply

Not applicable

91 W

Cooling system (full speed – normal speed)

1056 W — 321.6 W = 734.4 W

864 W

Craft interface

9.6 W

11 W

PIC —Generalized typical value

30 W

35 W

PIC (Type 3)—Generalized maximum value

57.6 W

68 W

PIC (Type 4)—Generalized maximum value

158.4 W

186 W

  • Example of calculating typical power consumption for minimum configuration:

  • Example of calculating typical power consumption for maximum configuration:

  • Example of calculating system thermal output: