Appendix_J_-_PDU_SPEC.pdf

Section 26 24 15 Page 1

UNCLASSIFIED – For Official Use Only

SECTION 26 24 15

COMPUTER ROOM POWER DISTRIBUTION UNITS

10/16

PART 1 GENERAL

1.1 SCOPE

This specification covers the technical requirements for procuring Power Distribution Units (PDU) that provide surge suppression, voltage transformation, isolation, distribution, and monitoring for electrical circuits supporting data center equipment in the Continental United States (CONUS). This specification requires adjustments for overseas applications. Additionally, this specification details requirements for Remote Power Panels (RPP) if utilized. Note: RPPs may also be known as Remote Distribution Cabinets (RDCs), Sub-feed Distribution Cabinets (SDC), or other trade names. For the purposes of this specification, the term RPP shall be used.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. Version dates of listed references shall be current as of the date of solicitation or as referenced, whichever is more current.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C12.1 Electric Meters Code for Electricity Metering

ANSI C84.1 American National Standard for Electrical Power Systems and Equipment Voltage Ratings (60 Hz)

FEDERAL COMMUNICATIONS COMMISSION

FCC Part 15 EMI emission limits for Class A computing devices and the emission and immunity limits of EN50081-2/EN550022 Class A and EN50082-2

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 100 The Authoritative Dictionary of IEEE Standards Terms

IEEE C37.13 Standard for Low-Voltage AC Power Circuit Breakers

Used in Enclosures

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

Delete these instructions prior to inclusion in a solicitation.

1. Select options by deleting non-applicable [options].

2. Delete or replace text in brackets and asterisks “[** Text**]”

3. Print final form to a .pdf for inclusion to the contract if possible to prevent changes.

Section 26 24 15 Page 2

NEMA ICS 6 Enclosures

NEMA LI 1 Industrial Laminating Thermosetting Products

NEMA ST 20 Standard for Dry-Type Transformers for General

Applications

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 National Electrical Code

NFPA 70E Standard for Electrical Safety in the Workplace

NFPA 75 Standards for the Protection of Information Technology

Equipment

UNDERWRITERS LABORATORY (UL)

UL 467 Grounding and Bonding Equipment

UL 50 Enclosures for Electrical Equipment, Non-Environmental

Considerations

UL 67 Standard for Panelboards

UL 60950 Standard for Information Technology Equipment (UL listing applies to 60 Hz units only).

1.3 DEFINITIONS

Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, are as defined in IEEE 100.

1.4 SUBMITTALS

Government approval is required for all submittals with a “G” designation. The Government shall have ten (10) business days to review submissions. Government approval is required for extensions of design, critical materials, deviations, equipment whose compatibility with the entire system must be checked, and other items as designated by the Contracting Officer. Government approval is required for any deviations from the Solicitation or Accepted Proposal and other items as designated by the Contracting Officer.

Each submittal is to be complete and in sufficient detail to allow ready determination of compliance with contract requirements.

As soon as practicable after award of contract, and before procurement of fabrication, forward to DISA Engineer submittals required in the technical sections of this specification, including shop drawings, product data and samples. Forward one copy of the transmittal form for all submittals to the Resident Officer in Charge of Construction. All submittals shall be sent in electronic PDF format.

DISA Engineer will review and approve for the Contracting Officer those submittals reserved for Contracting Officer approval to verify submittals comply with the contract requirements.

Section 26 24 15 Page 3

Transmit each submittal, except sample installations and sample panels to office of approving authority. Transmit submittals with transmittal form prescribed by Contracting Officer and standard for project. On the transmittal form identify Contractor, and indicate date of submittal.

Submit items according to the following Submittal Descriptions (SD):

1.4.1 SD-03 Product Data

For each type of product include catalog cuts, illustrations, schedules, diagrams, performance charts, instructions and brochures illustrating size, physical appearance and other characteristics of materials, systems or equipment. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

Include samples of warranty language when the contract requires extended product warranties.

Installation Materials; G

PDU material Submission; G

1.4.2 SD-06 Test Reports

Report signed by authorized official of testing laboratory that a material, product or system identical to the material, product or system to be provided has been tested in accord with specified requirements.

Unless specified in another section, testing must have been within three years of date of contract award for the project.

Report which includes findings of a test required to be performed by the Contractor on an actual portion of the work or prototype prepared for the project before shipment to job site.

Report which includes finding of a test made at the job site or on sample taken from the job site, on portion of work during or after installation.

Proposed Factory Tests; G

Completed Factory Test Reports; G

Proposed Site Start-Up Procedures; G

Site Start-Up Report; G

1.4.3 SD-08 Manufacturer’s Instructions

Preprinted material describing installation of a product, system or material, including special notices and Safety Data Sheets concerning impedances, hazards and safety precautions.

Installation Instructions; G

1.4.4 SD-09 Manufacturer’s Field Reports

Documentation of the testing and verification actions taken by manufacturer's representative at the job site, in the vicinity of the job site, or on a sample taken from the job site, on a portion of the work, during or after installation, to confirm compliance with manufacturer's standards or instructions. The documentation must be signed by an authorized official of a testing laboratory or agency and state the test results; and indicate whether the material, product, or system has passed or failed the test.

Onsite Storage Verification; G

Section 26 24 15 Page 4

1.4.5 SD-10 Operation and Maintenance

Data that is furnished by the manufacturer, or the system provider, to the equipment operating and maintenance personnel, including manufacturer's help and product line documentation necessary to maintain and install equipment. This data is needed by operating and maintenance personnel for the safe and efficient operation, maintenance and repair of the item.

This data is intended to be incorporated in an operations and maintenance manual or control system.

Submit Operation and Maintenance (O&M) Data for the provided equipment, product, or system, defining the importance of system interactions, troubleshooting, and long-term preventive operation and maintenance. Compile, prepare, and aggregate O&M data to include clarifying and updating the original sequences of operation to as-built conditions. Organize and present information in sufficient detail to clearly explain O&M requirements at the system, equipment, component, and subassembly level. Include an index preceding each submittal.

User Manuals; G

Warranty; G

1.5 QUALITY CONTROL

The contractor is responsible for performing quality control that results in all work being in compliance with contract and project requirements.

1.6 QUALIFICATIONS

Equipment Start-Up shall be performed by factory-trained and certified technicians.

1.7 DELIVERY, STORAGE, AND HANDLING

Equipment shall be delivered to an inside location in the facility where it will be installed. Coordinate inside delivery with the Government 30 days prior to shipping. Generally, the equipment is expected to be placed in its final location the day of delivery. If on-site storage is required, coordinate interim storage requirements with the Government as soon as possible. Physical installation shall be provided to the final location inside the facility.

1.8 SHOP DRAWINGS

Shop drawings shall be generated for the specific equipment configuration. Drawings may be submitted electronically and in Adobe (.pdf) format.

PART 2 PRODUCTS

2.1 SYSTEM REQUIREMENTS

2.1.1 CAPACITY

The PDU will have a minimum output capacity of [125KVA] [150KVA] [175KVA] [200KVA] [225KVA] [** or specify otherwise **] with a minimum of four (4) [** or specify otherwise **] subpanels and [1] [2] [** or specify otherwise **] 225A subfeed breakers for remote power panels (RPP or “expansion cabinet”) capabilities.

2.1.2 INPUT

Newswanger, Steven T CTR DISA MPE2 Portable Document Format (.pdf)? Adobe is the name of an entity. Not sure if there are any implications here by including Adobe.

Section 26 24 15 Page 5

The input voltage to the PDU will be 480 VAC, 60 Hz, 3-wire, three-phase and the appropriate-sized insulated ground. The input feed to the PDU shall be bottom-fed. Barriers shall be installed to prevent personnel that are installing 120/208V branch circuits from any exposure and/or contact with the 480VAC sections of the PDU. Normally, input power conductors shall be continuous from the switchboard or panelboard feeding the PDU. When specifically requested, provide factory manufactured input power whip with conductors in LFMC and a termination box designed for mounting below the raised floor.

2.1.3 MAIN INPUT CIRCUIT BREAKER

The PDU will be equipped with a UL-listed main input circuit breaker to provide a means of disconnecting power to the PDU. It will be a three-pole thermal magnetic molded case circuit breaker rated for industrial use. It will be rated for 600 VAC and will be sized for 125% of the PDU full-load input current in accordance with National Electric Code. The minimum UL-listed interrupting ratings for the main input circuit breaker will be 35,000 RMS symmetrical amperes at 480 volts ac. The main circuit breaker shall have selectable trip settings sufficient to coordinate with the existing facility electrical distribution system. Adjustable trip settings shall include long time (L), short time (S), instantaneous (I), and ground fault (G). The main breaker shall interface with local EPO button on front of PDU. The main input circuit breaker shall be mechanically connected to the PDU’s input bus. The main input breaker shall install with bolts/screws; breakers that are “snap in” type are not permitted.

The main input breaker will provide overcurrent protection for the transformer. A label will be provided to clearly identify the breaker as the main input breaker. The main input breaker shall be located and protected so that personnel installing branch circuits are not exposed to the breakers input or output terminals and/or wiring.

2.1.4 TRANSFORMER

The PDU will have an electro-statically shielded, K-20 rated transformer for reduction of harmonic distortion. The transformer will provide step-down for the input 480(Delta) volts to 208/120(Wye) volts PDU output. The transformer will be dry type, three phase, common-core, convection air cooled. The transformer will conform to ML-T-27B, with Class H, 220 degrees C minimum insulation. All transformer windings shall be copper. Audible noise levels of the transformer will be less than the ANSI C89 standard for transformers. The transformer will be provided with six full capacity compensation taps at 2.5% increments to accommodate field adjustments to match source voltage.

These compensation taps will be easily accessible by removal of one exterior panel. Tap changes include:

a. Two, 2.5%, full capacity, above nominal (maximum 5% above)

b. Four, 2.5%, full capacity, below nominal (maximum 10% below)

c. Typical characteristics exhibited by the transformer will be:

d. Percent impedance – 3.5%

e. Percent reactance – 3.0%

f. Common mode noise attenuation- 55 dB minimum

g. Common transverse conversion mode noise attenuation –80db

h. Full-load efficiency – 97% minimum

The transformer will be provided with additional thermal overload protection for the transformer. An alarm shall notify personnel if transformer temperature reaches 180 degrees Celsius. The PDU will automatically shut down if transformer temperature reaches 200 degrees Celsius.

2.1.5 GROUND

Per NEC 250.30 the PDU will be connected to the buildings grounding electrode. Provide a termination point that is electrically connected to the ground and XO bond on the secondary side of the transformer. This connection point shall be clearly marked.

Does this need to be spelled out?

Newswanger, Steven T CTR DISA MPE2 Shall not be permitted? Are not acceptable?

Newswanger, Steven T CTR DISA MPE2 Decibel? Revise to dB?

Newswanger, Steven T CTR DISA MPE2 Fahrenheit? UFGS standard is to include F for CONUS projects, section 1.1 states this spec applies only to CONUS projects. Is C preferable to DISA?

Shall?

Section 26 24 15 Page 6

2.1.6 SPIKE/TRANSIENT SUPPRESSION

The PDU’s input and output will be equipped with Spike/Transient Voltage Suppression to clip high-energy transients and provide filtration and suppression of line-energy transients and provide filtration and suppression of line noises. The spike and transient suppression shall be located and protected so that personnel installing branch circuits are not exposed to the suppression system components.

2.1.7 OUTPUT VOLTAGE

The output voltage from the PDU shall be 208Y/120 volts ac at 60 Hz, three phase, four-wire-plus ground wye secondary configuration.

2.1.8 WIRING AND BUSSING

All wiring and bussing components internal to the PDU shall be copper. Provide a 100% (minimum) rated neutral bus. Branch circuits will be fed from the bottom of the PDU into the raised access floor.

Means to connect flexible, metallic, liquid-tight conduits will be easily obtained by use of installed internal conduit-landing plates. All wiring, terminations, and components associated with the PDU’s 480V components and the 208V panelboard inputs shall not be routed through, terminate in or protrude into the space allotted for installation of branch circuit conductors or raceways.

2.1.9 FRAME AND ENCLOSURE

a. If RPPs are part of the project, they shall comply with the requirements of this section. The frame will be of welded steel construction. The unit shall have lockable, removable, hinged front and rear doors that are 16-gauge (minimum) perforated sheet metal construction to maximize ventilation. The enclosure will be of sheet metal partitions that attach to the frame by means of attachment mechanisms that allow the partitions to be removed from the sides and back. The PDU will have permanent leveling jacks for final installation. Provide front doors with a handle-operated, two-point latch closure system with key lock. Keying for locks shall match similar PDUs currently installed at the facility. The front doors shall provide access to the main panelboard circuit breakers, and to all branch circuit breakers. Means for accessing the 480V components and sub feed breakers are not required to be accessed from the front doors.

b. Doors and side panels are finished in electrostatic powder-coat [black] [cream].

c. The unit will be installed [against a wall] [in an open space] [between existing equipment in-row].

d. For units that are capable of being installed against the wall, the unit shall be manufactured so that maintenance of the unit’s transformer and other electrical components can be performed from the front and side of the PDU. The panelboard orientation shall comply with the requirements in this section.

e. For units that are capable of being installed in an open space, [front] [rear] [side] access is permissible for maintenance of the transformer and other electrical components. The panelboard orientation shall comply with the requirements in this section.

f. In order to fit into DISA-standard master floorplans, the footprint of the unit shall be no greater than [48] [60] [84] inches width and maximum of [36] [48] inches depth, not including access door opening swing and clearance requirements.

g. The distributed weight of the PDU shall be less than 250 lb/ft2 (1225 kg/m2).

h. The PDU [shall be provided with a stand] [shall not be provided with a stand]. When provided, the floor stand shall be sized to carry the full weight of the PDU with all of the PDU’s

Newswanger, Steven T CTR DISA MPE2 Alternating current or AC?

Newswanger, Steven T CTR DISA MPE2 Should this be required? “Permissible” provides contractor room for interpretation.

Include both? Suggest only I-P as this is CONUS section.

Section 26 24 15 Page 7 legs resting on the floor stand. Floor stands shall be adjustable to account for minor variations in floor surface condition and level. The floor stand shall position the PDU even with the raised floor surface and to minimize static pressure loss between the unit and any gap to the floor surface. The floor stand shall be designed to equally distribute the weight of the PDU across the structural floor below the raised floor without interfering in the electrical installation of the PDU or any of its branch circuits or adjacent utilities. The floor stand shall be seismically rated for seismic zone [none] [II] [III] [IV]. The depth of the raised floor, as measured from structural floor to top of raised floor is [**enter height**] inches, nominal.

2.1.10 LOCAL EMERGENCY POWER OFF (EPO)

The PDU will have a fully-guarded and illuminated EPO switch to shunt trip the main breaker for the PDU under emergency conditions. The local EPO switch shall be accessible from the outside of the cabinet without having to open the doors and shall be clearly identified.

2.1.11 AUTOMATIC/MANUAL RESTART SELECTION

When the PDU is equipped with an automatic/manual restart feature to allow for an orderly supervised startup after system shutdown, the default configuration for this option shall be such that the PDU main circuit breaker does NOT trip on loss of PDU input power condition. The PDU main circuit breaker shall only trip on overcurrent conditions and local EPO activations.

2.2 PANELBOARDS

2.2.1 CONFIGURATION

If RPPs are part of the project, they shall comply with the requirements of this section. The PDU will be provided with the number of distribution panelboards specified. Distribution panelboards shall be vertically mounted and forward-facing for distribution to the intended loads. All panelboard main breakers shall be directly connected to the 208/120Y input power feed. PDUs that are natively designed with only two (2) subpanels are acceptable provided they are capable of being expanded with an affixed cabinet (sidecar) providing the third and fourth subpanels. This affixed cabinet must open to the front of the unit and not require side access during maintenance or installation of circuits.

Total panel dimensions, including sidecar, must not exceed the dimensions required in this specification.

2.2.2 DISTRIBUTION PANELBOARDS

a. Each distribution panel board will be three-phase and have a rating of 225 amperes with a minimum overall short-circuit current rating of 22,000 RMS symmetrical amperes. Each distribution panelboard will be electrically isolated and individually protected by a main panelboard circuit breaker that will provide overcurrent protection for the panelboard and allow shutdown of the individual panelboard.

b. Each distribution panelboard will include separate, isolated 100% (minimum) neutral and safety-ground bus bars for the neutral and safety-ground connections from each branch load. The ground and neutral bus bars for each panelboard shall be located adjacent to the panelboard that they support. All bussing and current-carrying components of the distribution panelboards shall be copper. The ground and neutral bus bar connections shall be clearly marked.

c. Each distribution panelboard will have 42 pole positions so that the PDU will have a total of 168 (minimum) [** or specify otherwise **] pole positions. Guides will be installed between the branch circuit breaker bus bar connections.

Volt?

Section 26 24 15 Page 8

d. Each distribution panel board shall be capable of mounting single-pole, two-pole, and three-pole circuit breakers through 100 amperes. The panel boards will utilize [Square D] [General Electric] [Cutler-Hammer] [ABB] form factor with bolt-in type circuit breakers.

e. Each distribution panelboard will be individually enclosed with separate hinged covers to provide access to each panelboard without exposing the live components of other distribution panelboards or any of the 480V electrical components.

f. Distribution panel boards shall come empty of any branch circuit breakers with blank space fillers installed in place of the breakers.

2.2.3 SUBFEED BREAKERS

Each subfeed breaker position shall be factory populated with a 225A breaker with a minimum overall short-circuit current rating of 22,000 RMS symmetrical amperes. When the customer connection point for the load side of the subfeed breakers is of bus type, mechanical lugs for all subfeed connections shall be provided. The lug types shall support the installation of 4/0 conductors for the three phases and neutral connections and #4 AWG for the ground connection.

2.3 MONITORING

2.3.1 LOCAL MONITORING

If RPPs are part of the project, they shall comply with the requirements of this section. The PDU will have a local, microprocessor-based monitoring system, including display panel, to indicate system parameters and the ability to program individual branch circuit parameters. The display shall have the capability to visually present all of the data listed below. The display shall be accessible with all panel doors closed. All metered values shall have an accuracy of +/- 2%. The system shall monitor and display the following parameters:

a. Voltage Monitoring – shall include the ability to select and monitor PDU input voltage line-to-line and output voltage line-to-line, line-to neutral for all three phases.

b. Current Monitoring – shall include the ability to select and monitor the overall PDU current for all three phases, as well as the neutral and the ground current. The same current monitoring shall be provided for each individual sub-panel.

c. Power Monitoring - shall include the ability to monitor the total PDU output and individual sub-panel output as measured in kVA, kW, kWH, Power Factor, and associated load demand.

d. Alarming – At a minimum, the PDU will visually and audibly report the following alarms:

e. Branch circuit overcurrent at user defined level

f. Neutral overcurrent

g. Phase rotation (sequence) error other than clockwise rotation

h. Transformer over temperature

i. Input overvoltage

j. Input under voltage

k. Output under voltage

l. Frequency deviation

m. Phase loss

n. TVSS and surge suppression activation

o. TVSS and surge suppression failure

p. Branch circuit parameters as specified below

2.3.2 BRANCH CIRCUIT MONITORING SYSTEM

a. If RPPs are part of the project, they shall comply with the requirements of this section. The PDU shall have circuit monitoring installed on all branch circuits in each distribution panelboard. The Branch Circuit Monitoring System (BCMS) shall monitor all of the individual branch circuits of

Section 26 24 15 Page 9 each 42-pole distribution panelboard. The BCMS shall provide data and alarm conditions for each branch circuit.

b. There shall be two user-adjustable branch circuit current alarm levels that provide both a warning alarm (default value=40% of nominal breaker rating) and a critical alarm (default Value=45% of nominal breaker rating). The warning and alarm shall be adjustable from 0-100% and factory-set to default values. Alarm values shall be programmable from the display panel.

The BCMS alarms will have an inhibit function to prevent alarms from branch circuits that are not utilized. The critical alarm shall be adjustable from 0-100% in 1% increments and factory-set to the default values specified above. Current transformers (CTs) shall have a current range of 0- 60A. The PDU’s branch circuit monitoring shall be capable of being retrofitted with current transformers to support a 100 Amp branch circuit.

c. The BCMS shall have a Modbus (TCP/IP) communication port for configuration and remote data access and reporting in accordance with “Remote Monitoring” below.

d. The BCMS shall monitor and report the following parameters for each branch circuit position:

• Line-to-neutral voltage

• Line Current

• KW

• KWH

• High current warning Alarm

• High Current Critical Alarm

• Low/High Voltage Alarm

• Alarm Inhibit ON/OFF status

2.3.3 REMOTE MONITORING

If RPPs are part of the project, they shall comply with the requirements of this section and report directly to the BAS. The PDU shall be capable of communicating with an external Building Automation System (BAS) via an open protocol communication platform. Remote monitoring interfaces that require additional manufacturer specific interface devices to communicate with the PDU are not acceptable.

Communication protocol shall be Modbus TCP/IP. Wiring, terminations and programming to connect the PDU to the BAS will be provided and installed by others. The remote monitoring package must be able to communicate all of the PDU’s metering and alarming functions listed in the Local and Branch Circuit Monitoring sections above.

2.4 FACTORY TESTING

If RPPs are part of the project, they shall comply with the requirements of this section and report directly to the BAS. The PDU will be completely factory tested before shipment to verify proper assembly and operation prior to shipment. Factory tests shall validate compliance with this specification. Submit proposed factory test procedures for Government review and approval 30 days prior to factory tests. Submit factory test report to the government for review and approval no later than 1 week after testing is complete.

PART 3 EXECUTION

3.1 DELIVERY

Generally, the equipment is expected to be placed in its final location the day of delivery. If on-site storage is required, coordinate interim storage requirements with the Government as soon as possible.

If the project involves PDU equipment without installation, the PDU shall be delivered to the specified on site storage point. Provide verification to the Government that on-site storage conditions meet the minimum requirements by the manufacturer to ensure warranty coverage.

Revise all instances of this verbiage to read, “Where RPPs are part of this project,…”

Section 26 24 15 Page 10

3.2 EQUIPMENT START-UP

Provide factory-based on site start-up for PDUs and RPPs. All start-up activities shall be performed by factory trained and certified personnel. Coordinate start-up date and time (along with user training) with the Government at least 30 days prior to start-up activities. Submit proposed start-up procedures with the schedule request for Government review and approval. Include selectable switch, jumper, and breaker trip settings necessary to comply with the project objectives in the start-up procedures. Verify BCMS parameters have been programmed as specified in this section. Within one week of completion of the start-up activities, provide completed start-up report and written start-up documentation to the Government for review and acceptance within one week after successful start-up completion.

3.3 USER MANUALS AND TRAINING

a. Provide manufacturer-generated users manuals for each piece of equipment installed. The user manuals shall be referenced as a textbook for user training. Provide copies as specified below:

• One hardcopy for each piece of equipment installed. The hardcopy shall be delivered to the installation site.

• One electronic copy for each type of equipment installed. This shall be transmitted to the

Government via CD or email.

b. Provide two (2) hours of user training. Training shall include operation and maintenance of the equipment, selectable switch and jumper settings, and inputting software program parameters including but not limited to branch circuit parameters. The user manuals shall be referenced as a textbook for user training. Training shall be performed by factory trained and certified personnel.

3.4 WARRANTY

The manufacturer shall provide a one-year, on-site, parts and labor warranty, in writing, against defects in material and workmanship for 12 months after start-up date at no additional cost to the Government. The manufacturer shall maintain a dispatch center 24 hours per day, 365 days per year, to minimize service response time and to maximize availability of qualified service personnel. Provide the 24-hour contact phone number, email, and address to report warranty issues. Provide a 24-hour onsite diagnostic response to warranty issues within the warranty period. The manufacturer shall provide necessary repairs or replacement components for failed equipment and all labor to replace them within five (5) business days of the arrival of the onsite diagnostic response.

--- END OF SECTION ---

The foregoing specification is approved for use in equipment acquisitions. The selectable features must be defined for the specific project. The DISA Project Engineer shall edit the MS Word version of the specification to meet the needs of each individual project.

APPROVED 24 Oct 2016

Brian C. Saum, GS-14 James S. Caves, GS-14 Chief, Facilities Engineering, MPE2 Chief, Base Operations Support, MPE1