PWS_Appendix 3 - 26-05 - Power Accessories for IT Racks.docx

UNCLASSIFIED – FOR OFFICIAL USE ONLY

Minimum Technical Specification for Power Accessories for IT Racks DISA Facilities Engineering Circular Attachment 26-05

Effective Date: 10 September 2020

Purpose This standard defines the electrical and mechanical characteristics and requirements for power accessories permitted in IT equipment enclosures (racks) to be deployed at DISA (Defense Information Systems Agency, Facilities Engineering Denver) datacenters.

SCOPE

This standard covers the requirements for rack-mounted metered power distribution units (MPDUs) and rack-mounted automatic transfer switches (ATSs). ATSs are only permitted in legacy equipment.

Other types of powered accessories for IT racks, such as uninterruptable power supplies (UPSs) are not permitted in DISA datacenters.

REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred within the text by the basic designation only. The current revision of the reference, including all issued updates, must be followed.

The advisory provisions are mandatory. Substitute "must" for "should" wherever it appears and interpret all references to the "authority having jurisdiction" and "owner" to mean the Contracting Officer and DISA.

DEFINITIONS

Not Used

REQUIREMENTS

EQUIPMENT REQUIREMENTS

MPDU Requirements All MPDUs must meet the following:

Two MPDUs per rack, unless additional MPDUs required in Contract documents, to be installed vertically in the cabling space of the rack.

Monitored and metered output Alarm if any phase is in excess of 80% of full load.

LED monitors for each phase showing actual amperage draw Zero U Nominal input voltage: 208V 3-phase input, with locking connection Nominal output voltage: In accordance with Contract documents, typically 120V/208V Maximum input current: In accordance with Contract documents, typically 20A to 60A Power cord length: 6 ft minimum Each MPDU logically addressable for monitoring and rack level power management.

Output Connections:

The receptacles must be spread across all 3 phases.

ATS Requirements All ATSs must meet the following:

NEMA 1 enclosure minimum, unless otherwise specified in Contract documents.

Input/Output Voltage In accordance with Contract documentation.

Typically the input voltage is 208 V (single phase) Typically the output voltage is 120 V (single phase) Output ampacity rating of at least 80% of the ATS input rating Load transfer between sources:

Designed, tested and listed to have at least a lifecycle of 75,000 operations.

Transfer the load within 8-12 milliseconds, regardless of which input source is connected to the load when the transfer is initiated.

Preconfigured by manufacturer to transfer from either input source at 90% of the output voltage nominal rating.

Able to transfer load when the input voltage sources are not in phase.

Rack mounting Mountable in DISA’s standard rack using at least four screw type mounting connections to the rack. Refer to DISA Facilities Engineering Circular Attachment 27-02, Minimum Technical Specification for IT Equipment Enclosures (Racks).

Mounting using a shelf is prohibited.

Designed to occupy no more than 2U. Preferred size is 1U.

Metering and Operator Indicators Clearly display the following on the front of the ATS Load Amperage Input Voltage Connected Source ATS Alarms ATS Overloaded Input Source Availability (for each source) Remote Monitoring Capable of remote monitoring via SNMP connection.

Provide the ability to remotely perform the following:

Configure the ATS View all metering and monitoring requirements listed in paragraph 5.1.2.f.

Standard Products Provide materials and equipment which are the standard products of a manufacturer regularly engaged in the manufacture of such products which are of equal material, design and workmanship. Products must meet the following:

Satisfactorily used in commercial or industrial facilities for at least 2 years prior to the current acquisition, including applications of equipment and materials under similar circumstances and of similar size.

Available for purchase in the commercial market through advertisements, manufacturer’s catalogs, or brochures for at least 2 years prior to the current acquisition.

Single manufacturer when two or more items of the same class of equipment are required.

INSTALLATION REQUIREMENTS

General Requirements The Contractor installing the equipment must ensure the following:

Installed in accordance with the following:

Manufacturer’s recommendations Use hardware to install equipment in the rack.

Do not install on a shelf or using zip ties.

Approved Contract drawings In accordance with all applicable codes and standards Install the equipment to ensure the following:

Equipment installed in the rack must have front to back air flow. If the equipment is not front to back airflow, then the manufacturer’s option for front to back air flow must be provided.

Metering and operator indicators are visible from the front of the rack.

Utilize plastic non-conductive grommets with brushes where cables enter the rack from the top.

Utilize wire management equipment to direct power and datacomm cabling to the rear edges/rear corner posts of the racks. Power and datacomm cabling shall be routed separately.

OPERATIONS & MAINTENANCE (O&M) MANUALS

Provide one hard copy and one electronic pdf copy, with searchable text of the O&M manual. If this procurement is part of a larger project, provide each O&M manual as part of the project O&M manual.

Ensure the O&M manual includes the following:

Warranty letter for each type of equipment procured.

Manufacturer’s operations manual for each type of equipment procured.

IP address for each piece of equipment, listed by rack identification and equipment.

Any software provided by the manufacturer.

INSPECTION AND TESTING

Perform the following for each ATS with the Contracting Officer or designee:

Installed in accordance with this standard Installed in each rack is in accordance with Contract documents.

Functions properly when connected to the input source.

If applicable, manually switch between sources in accordance with the O&M manual.

Test the automatic switching by disconnecting a single input source in accordance with the O&M manual. Test for each source.

REPLACEMENT PARTS

Original equipment manufacturer replacement parts shall be available within a 3-day timeframe.

DELIVERY, STORAGE, AND HANDLING

Carefully handle, store, and protect equipment to prevent damage before and during installation in accordance with manufacturer's recommendations, and as approved by the Contracting Officer. Do not subject to shock. Replace damaged or defective items. Protect from the weather, humidity and temperature variation; and dirt, dust, or other contaminants.

Deliver equipment to an inside location in the facility. Provide all necessary equipment and lifts to receive and move the delivered equipment. Coordinate inside delivery with the Government 30 days prior to shipping. Coordinate interim indoor storage requirements and location with the Government as soon as possible. Ensure onsite storage conditions meet the minimum requirements by the manufacturer to ensure warranty coverage. Provide physical installation to the IT rack.

WARRANTY

Provide a 2-year, onsite, parts and labor manufacturer warranty, in writing, against defects in material and workmanship for 2-year at no additional cost to the Government. The manufacturer agrees to repair or replace components that fail in materials or workmanship. Warranty must include all labor, travel, material, and related expenses to restore system and/or components from failures through the warranty period.

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