U.S. EPA Continues Large Network Equipment Specification Development

Thu, 07/09/2015 - 14:23 -- MrGreen

The U.S. Environmental Protection Agency (EPA) recently published the second draft of its proposed ENERGY STAR program efficiency specification for large network equipment (LNE). The draft comes after a series of stakeholder webinars aimed at ironing out issues with the first LNE efficiency draft. Products covered by this program include routers, switches, security appliances, and access point controllers which are rack mounted, intended for use in standard equipment racks, and either contain >11 wired physical network ports or has a total aggregate port throughput >12 Gb/s.

Key changes from the previous Draft 1 specification include:

  • Revised definitions including LNE, modular and fixed, and module. Fiber optic ports are now included in the physical network port definition.
  • Clarification that active state efficiency requirements won’t be part of this specification version. However, data must be reported to support setting levels for active state efficiency in version 2.
  • Proposed family structure for modular product
  • The proposed spec requires all installed power supply units (PSUs) to perform at levels consistent with 80 Plus Gold levels, with an additional 80% efficiency requirement at 10% load, as shown in Table 1. Power supplies must also meet the minimum power factor (PF) levels shown in Table 2 under all loading conditions where the output power is ≥ 75 W. For conditions under 75 W, PF is to be measured and reported only.

    Table 1: PSU Efficiency Requirements

    Power Supply TypeRated Output Power10% Load20% Load50% Load100% Load
    Multi-outputAll Output LevelsN/A85%88%85%
    Single-outputAll Output Levels80%88%92%88%
    Source: ENERGY STAR Product Specification for Large Networked Equipment, Draft 2, Version 1

    Table 2: PSU Power Factor Requirements

    Power Supply TypeRated Output Power10% Load20% Load50% Load100% Load
    Multi-outputAll Output RatingsN/A0.800.900.95
    Single-outputOutput Rating ≤ 500 W N/A0.800.900.95
    Output Rating > 500 W and Output Rating ≤ 1,000 W 0.650.800.900.95
    Output Rating >1,000 watts0.800.900.900.95
    Source: ENERGY STAR Product Specification for Large Networked Equipment, Draft 2, Version 1

    In addition to the program specification draft, the EPA published the LNE Test Method final draft. The revised test method now includes procedures for high port count products, and adopts recent changes made by the U.S. Department of Energy (DOE) on measuring the power of products that have multiple PSUs.

    To be added to the specification development distribution list, send your contact information to largenetwork@energystar.gov. To download the test method and program specification drafts, visit the ENERGY STAR website. Feedback on the proposed draft specification should be submitted to the above email address by July 24, 2015.