Tài liệu Cabling Standard - (Private) - Harvard University - Wire and Cable Standards pptx

HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 1 of 32 H H a a r r v v a a r r d d U U n n i i v v e e r r s s i i t t y y W W i i r r e e a a n n d d C C a a b b l l e e S S t t a a n n d d a a r r d d s s Disclaimer This information is collected and composed by QUANG DUNG TECHNOLOGY from Havard.edu. All information is copyrighted by Harvard University. http://www.uis.harvard.edu/departmental_telecom/faculty_staff_phones/wcstandards/section6.php AUTHORIZED & EXCLUSIVE DISTRIBUTOR Head Office Suite 202, The Colonnade Building, 27 Nguyen Trung Truc St., District 1, Hochiminh City, Vietnam Tel: 84.8 823-1693 Fax: 84.8 823-1665 Hanoi Office A11, 3/Fl., Horizon Hotel, 40 Cat Linh St., Dong Da District, Hanoi, Vietnam Tel: 84.4 736-7055 Fax: 84.4 733-2470 Website: www.qd-tek.com.vn Email: info@qd-tek.com HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 2 of 32 TABLE OF CONTENTS SECTION I: INTRODUCTION A. Need For Standards SECTION II: ABOUT THE HARVARD UNIVERSITY NETWORK (HUN) Intellipath Telecommunications System Wire and Cable High-speed Data Network (HSDN) Telecommunications Facilities Management System (TFMS) SECTION III: CUSTOMER WIRE AND CABLE CONSIDERATIONS A. Requirements Of Current Applications B. Physical Environment C. Building Distribution D. Space Requirements E. Electrical Requirements: MDF and IDF F. Grounding G. HVAC requirements H. Cable Access: Internal And External I. Wire Removal J. Asbestos Abatement K. Fire Stopping SECTION IV: UNIVERSITY INFORMATION SYSTEMS ROLE A. Provide Design Assistance B. Notify Verizon of Facilities C. Develop Implementation Plan D. Provide Project Management E. Conduct A Performance Evaluation F. Administer Data Base G. Coordinate Moves, Adds, Changes H. Coordinate Repair I. Conclusion SECTION V: CONTRACTOR RESPONSIBILITIES A. Color Coding B. Label And Numbering Plan C. Maintain Records and Documents SECTION VI: TECHNICAL STANDARDS A. Jacks B. Backboards C. 110 Termination Block Placement D. VERIZON Network Termination and 110 Point Of Presence (POP) E. Station Wiring (Horizontal Distribution) F. Concealment G. Voice And Data Riser Systems SECTION VII: INTER-BUILDING CABLE (HSDN) Fiber Optic Cable Composition Fiber Optic Cable Fiber Optic Cable Termination Fiber Optic Testing and Acceptance Fiber Optic Functional Specifications Installation Requirements Labeling Requirement Test Requirements Documentation Requirements Warrantee Requirements SECTION VIII: GLOSSARY HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 3 of 32 SECTION I. INTRODUCTION A. Need For Standards The Harvard University Network (HUN) addresses the University's expanding need for a wide variety of voice and data communication services. The University Network is comprised of an Intellipath network, which provides voice services, integrated with multiple data networks via wire and cable and a high-speed fiber backbone. The goals of the University Network are to: • help control costs • protect current networking investments • provide improved service to customers • prepare the University for future network opportunities • ensure installation integrity and adhere to building aesthetics Because the University Network provides a wide variety of communications services, it is important that the underlying wire and cable structure be sound. Specific wire and cable standards have been developed by University Information Systems (UIS). These standards were developed and adopted by the University as part of its long- range plan to provide the Harvard community with consistent campus wiring. These standards ensure that as a department's needs change, or construction and renovation occurs, users will be able to access new technology efficiently and cost- effectively. Wire and cable standards are designed to assist departments as they plan for change and expansion. Following these standards is especially important so departments and the University can take advantage of the expanding array of new network technologies. To prepare for these evolving technologies, the University has adopted an "open architecture" approach. The open architecture approach provides a framework upon which a wide variety of technologies can be built. Voice, data (both low-speed and high-speed transmission), fax, graphic, wireless, VoIP, and image transport can all be accommodated within the structure provided by the University Network wire and cable standards. Some of the benefits of following wire and cable standards are: • By incorporating University Network standards in all wire and cable installations, departments may be comfortable that newly installed equipment will be compatible with the Harvard University Network. • By using uniform planning criteria, departments can be sure that appropriate Network design decisions are made during each design phase. • By following the recommendations for all wire and cable installations, departments know there will be a standard Network in place so they can take advantage of all enhanced services and remain compatible with emerging technologies. • By implementing wire and cable administrative procedures, departments are certain that UIS will be able to support the University Network's telephone and data capabilities. All wire and cable standards contained in this guide conform to industry recommendations and take into account the wide variety of technology needs and requirements of the Harvard community. HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 4 of 32 SECTION II. ABOUT THE HARVARD UNIVERSITY NETWORK (HUN) A. Overview The University Information Systems has implemented the major components of the University Network: • Intellipath Telecommunications System • Wire and Cable • High-speed Data Network (HSDN) • Telecommunications Facilities Management System (TFMS) Intellipath Telecommunications System Intellipath is the name for digital Centrex service that provides telephone service to the University. UIS has installed the 5ESS digital switching system using Integrated Services Digital Network (ISDN) standards. ISDN, a series of international standards that provides a universal interface for digital communications. (see Attachment A) . Wire and Cable The wire and cable system is the distribution medium used to transmit voice and data. The wire and cable system, installed both in and between University buildings, provides the foundation for transmitting the signaling service from the central telephone office to the user's telephone and data equipment. High-speed Data Network (HSDN) HSDN is the information transportation service linking data networks and devices over a high-speed fiber optic "backbone" (capacity over 10 Gigabit). Users are able to access the HSDN through both local area networks and the data communications capabilities of Intellipath service. Users are also able to access external data networks via the HSDN. Telecommunications Facilities Management System (TFMS) TFMS is an on-line data base that provides UIS with inventory, service order, repair, billing, and management reporting information about the Network. HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 5 of 32 SECTION III: CUSTOMER WIRE AND CABLE CONSIDERATIONS Before making any wire and cable decisions, building and office managers should evaluate the requirements of their building based on the criteria described in this section. A consultant from UIS is available to work with building and office managers to determine an application's wire and cable requirements and to design a system that adapts to their physical environment. Harvard University Network consultants will recommend all wire and cable designs based on the standards set by the major telecommunications vendors and the Network standards adopted by Harvard. These standards balance user needs, financial resources, and future technology requirements. A. Requirements Of Current Applications An application's wire and cable requirements may include: • software or hardware • local area networks • transmission speed • security • financial options B. Physical Environment The location's physical environment may include: • number and location of users • existing resources - space, conduits, cable trays, and station wiring • new construction - location of new wiring closets • anticipated future growth • constraints - distance limitations • building utilities • security requirements C. Building Distribution Each University building houses a Telecommunication Room (MDF) in the basement and Supporting Telecommunication Room (IDF's) on each floor. Telecommunication Room design must be carefully planned (see Attachment B) . Design considerations include: • adequate lighting, ventilation, air quality, and power • ample work space for technicians • room for all cabling, equipment, and backboards • accessibility and security • electrical requirements • national, local, and building electrical codes HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 6 of 32 A riser cable system in each building links the floors together. For the building's high- speed data requirements, fiber optic cable is used in addition to the customary copper twisted pair for the riser cable. The locations of the Telecommunication Room are essential for the wiring design to be both cost effective and to provide the highest cable integrity. Ideally, the riser system is designed in a straight vertical line from the basement MDF closet up through the IDF Telecommunication Rooms on each floor. Each MDF/IDF should be located in the center of the area to be cabled to minimize the length of the cable runs. D. Space Requirements When departments plan renovations or new construction, it is important to provide sufficient power, space, and access to the building's utilities during the architectural planning stages. • The Main Telecommunication Rooms (TR) (MDF) will be a minimum of 10 feet by 12 feet. • Supporting Telecommunication Rooms (IDF) will be a minimum of 8 feet by 10 feet. • Rooms must be kept clean and dust free at all times. • Rooms will not be used for any purpose except communications support. • The recommended height of the finished ceiling to the finished floor will be 8ft. 6in. • Because Electromagnetic Interference (EMI) causes severe problems with electronic equipment, communication rooms must not be shared with electrical feeders, branch circuits or transformers. • No housekeeping or other materials shall be stored in these rooms. • Space for plywood (covered with fire-retardant paint) installed a minimum of 6” above finished floor (AFF) in both the MDF and IDF. • Rooms should be stacked to provide for ease in running the riser, in a straight vertical line from the basement MDF running to the IDFs. • Locate the TRs in the center of the area to be cabled to minimize the length of cable runs. • Floors, walls, and ceiling shall be sealed, painted, or constructed of a material to minimize dust. Finishes should be light in color to enhance room lighting. Floors shall have anti-static properties as per IEC 61000-4-2. HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 7 of 32 • Carpet is prohibited • Telecommunication rooms shall be located above any threat of flooding. Room located in basements shall have drains with positive drainage, otherwise sump pumps must be provided. When sump pumps are required, they shall be connected to an emergency power supply and a water detection system shall be provided to notify UIS SOC Operations in the event of a water problems. • Services that are not communications related are prohibited in these rooms. This includes, but is not limited to supply storage, janitorial services, etc. • Doors of the TR shall be a minimum of 1 m (3 ft) wide and 2.13 m (7 ft) high, without doorsill, hinged to open outward (code permitting) or slide side-to- side, or be removable. Doors shall be fitted with a lock and have either no center post or a removable center post to facilitate access for large equipment. E. Electrical Requirements: MDF and IDF Power for the MDF and IDF should adhere to the following requirements: • Each TR shall be furnished with its own dedicated electrical panel. The panel for each room shall be wired to a panel that is fed from a UPS system that is connected to the Emergency generator for the building. • A minimum of two, non-switchable, 30AMP, 208 (NEMA L6-30) Volt alternating current nominal twist-lock receptacles, each on separate branch circuits, shall be provided for equipment power. In addition, each space shall have a minimum of 2 non-switchable 20 Amp (NEMA 5-20), 120 volt alternating current quad receptacles. • Proper lighting that produces 50 foot-candles positioned between rows of racks and/or cabinets, not directly over the top of the rack. • The grounding busbar is provided by others, but grounding of the conduit and cable tray is the responsibility of the telecommunications contractor. • Electrical panels, other than those exclusively serving the telecommunication room which it is located, are strictly prohibited in telecommunication room. • Each Work Area (WA) should have two (2) duplex outlets with every outlet. F. Grounding All telecommunications rooms shall have a Telecommunications Grounding Busbar (TGB). A TGB should provide a central ground attachment point for telecommunications systems, computers and other equipment located in the tele/data room. • Provide a suitable telecommunications ground for equipment as required per ANSI/TIA/EIA-607 (telecommunications grounding), IEEE Emerald Green book and NEC requirements. The Telecommunication Main Grounding Busbar (TMGB) installed in the MDF shall be 20 inches long and 4 inches wide by ¼ inch thick with pre drilled NEMA bolthole sizing and spacing, Chatsworth Products, Inc. part number 40153-020. The Telecommunication Grounding Busbar (TGB) installed in the IDF shall be 10 inches long and 2 inches wide by ¼ inch thick with pre drilled NEMA bolthole sizing and spacing, Chatsworth Products, Inc. part number 13622- 010. • All cable tray, ladder rack, access floors and Telecommunications racks and/or cabinets contained within the MDF and the telecommunications room shall be grounded/ bonded together with #6 AWG, and then bonded/grounded with #6 HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 8 of 32 AWG to the Telecommunications Grounding Busbar (TGB). The grounding busbar shall be provided by the Electrical Installer. • All aforementioned telecommunications devices shall be grounded/bonded to the TGB using solid 6 bare copper (AWG wire). Coordinate exact grounding locations for each component with the Electrical Installer. Stand-Off Insulator Specifications: Dielectric Strength: 19,000-21,000 volts S.T. UL 94V-O Flame Resistant Finish Color: Red Insert Size & Material: 3/8-16 x 5/8”D UNC-2B Aluminum Dimensions: 2.5”W x 2.5”D Grounding Busbar (TGB) Specifications: Provides 3.75” stand-off from backboard. The 20” busbar (13622-020) has both .25”D and .375”D All telecommunications rooms shall have a grounding bar that shall be 20 inches long and 4 inches wide by ¼ inch thick with pre drilled NEMA bolthole sizing and spacing. Each distribution point shall be grounded to the main building ground, NEC and EIA/TIA 607 requirement shall be followed. Telecommunications Grounding Busbars Each distribution point shall be grounded to the main building ground, NEC and EIA/TIA 607 requirement shall be followed. • First choice for a ground at the MDF is a busbar connected to the building ground; second choice is a bus bar connected to a water pipe (with a #6 copper cable). • First choice for a ground at the IDF is a busbar connected to the building ground; second choice is a bus bar connected to a water pipe (with a #6 copper cable). • The grounding busbar is provided by other, grounding of the conduit and cable tray is the responsibility of its installation contractor. G. HVAC requirements • Coordinate electronic equipment BTU output with UIS for proper cooling requirements to maintain 64F – 75F temperature and 30% min – 55% max relative humidity. Typically the buildings central air conditioning system is suitable. • Maintain positive pressure with a minimum of 1 air change per hour. • No plumbing, HVAC or electrical conduit shall pass through or be directly above the telecommunications room. H. Cable Access: Internal And External Internal Cable Access HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 9 of 32 • TR’s aligned vertically: coring (drilling) of the floor and placement of sleeves is generally used. • TR’s not aligned vertically: raceway systems composed of trays and/or conduits should be installed. Departments planning to install their own raceway system should be aware that the standards require all wire be concealed. Fishing the walls, wire mold, and conduit placement are three methods of concealing wires. The University standard for station wire is to fish the walls or use wire mold. However, as part of a long-range structural plan, if conduit to a station jack location is desired we recommend: • 1" conduit stubbed and capped for protection in the ceiling with a pull string • 2" x 4" electrical work box recessed into the wall (junction box is required for every work area location). • Mounting height: o Standard outlet center: 18" AFF (above finished floor) o Wall outlet center: 54" AFF o Handicapped wall outlet: 48" AFF If the conduit transports more than telecommunications, departments may want to reassess the conduit's size to provide for additional voice or data communications demands. In any situation where a conduit is being installed, the fill ratio must be 40%. When installing conduits, if there are more than two 90-degree angle turns in the conduit, a pullbox is required. When installing a tray as part of an open raceway system, the tray must be more than one (1) foot from an electrical source (i.e. fluorescent light). To facilitate future cable installations a new pull string, tied off at both ends shall be installed in conduit simultaneously with the pull-in of cable. External Cable Access Four (4) four (4) inch conduits with mule-tape with footage markers shall be installed and tied off in each must be provided by the customer from the building MDF to the property line or nearest utility manhole. I. Wire Removal Cables that are abandoned in ceilings, riser systems, and air handling systems have always been a source for fueling smoke and fire. The weight of the cabling has also strained ceiling, raceway, and riser systems. Often times, abandoned cables have been left behind when new cabling is installed. NEC 2002 Article 770.3(B) for optical fiber and Article 800.52(B) for communications cabling states that all accessible abandoned cable, unless marked for future use, must be removed. The building owner is financially responsible for removing old abandoned cabling. UIS is available to help coordinate this effort. J. Asbestos Abatement The building owner is responsible for asbestos abatement. UIS is available to help coordinate this effort. HARVARD UNIVERSITY Wire and Cable Standards Quang Dung Technology Distribution Company Page 10 of 32 K. Fire Stopping • Provide fireproof seals in accordance with the National Fire Protection Association (NFPA) and the National Electric Code (NEC), Article 200-221 and EIA/TIA 569 standards. • Fire stop all penetrations in accordance with the current edition of the National Electrical Code. • Do not use concrete for fire stopping on cable trays, wireways or conduit. Contractors who use this method will be required to replace all cables affected. [...]... University wire and cable standards They are required to follow the University' s Technical Standards (see Section VI) for wire and cable installation These standards allow installations to be thoroughly tested for accuracy and to provide UIS with the ability to administer the Network effectively Contractors are required to provide an accurate and consistent account of work completed The University. .. gang 1-port face plate shall be Avaya P/N M10L-246, Commcode 108 258 419 Single gang 4-Port faceplates shall be Avaya P/N M14L-246, Commcode 108 168 550 Single gang 2-port 106 style faceplates shall be Siemon P/N DP-S-20 Quang Dung Technology Distribution Company Page 15 of 32 HARVARD UNIVERSITY Wire and Cable Standards 9 Single gang 2-port 106 style faceplate shall be Ortronics P/N OR-4030025 6-0 9 10... Page 20 of 32 HARVARD UNIVERSITY Wire and Cable Standards SECTION VII: INTER-BUILDING CABLE (HSDN) The following specifications describe the installation of the fiber optic cable for the HSDN backbone Fiber Optic Cable Composition Fiber optic installation shall consist of a component that contains 12 strand 62.5/125 um multi-mode and 10/125 um 12 strand single mode fiber cable Fiber Optic Cable The following... "Surveying Standards and Recovery Notes" Warrantee Requirements All material and workmanship must be covered by a warrantee with a duration of at least one year Quang Dung Technology Distribution Company Page 24 of 32 HARVARD UNIVERSITY Wire and Cable Standards SECTION VIII: GLOSSARY ANSI: American National Standards Institute Administration: correct and consistent use of color, labeling, and numbering... AVAYA 188 wire troughs (for voice and data) will be mounted across the plywood frame between the VOICE and DATA blocks Cross -wire will run down and through the 188 wire troughs for VOICE and up and through for DATA All cross -wire will be supported in 188 wire troughs 12 Station wire will be installed to transmit high-speed data as either ISDN digitized voice and data or standard data (for example; Ethernet... Company Page 14 of 32 HARVARD UNIVERSITY Wire and Cable Standards All Fiber Optic Cables will be tested using a Optical power meter, measuring end-toend attenuation for all installed cables, including: all splices, terminated fiber; all connector, and patch panels The total loss shall be measured and reported for each cable at the appropriate operation wavelengths, 850 nm, 1300 nm, 1310 nm and 1550 nm Optical... Functional Specifications 10/125 Micron Single-mode Fiber Specification Functional Specifications - Fiber Cable Maximum Attenuation: @ 1300nm 0.4dB/km @ 1550nm 03.dB/km Quang Dung Technology Distribution Company Page 21 of 32 HARVARD UNIVERSITY Wire and Cable Standards Maximum Dispersion: @ 1290 - 1330nm 2.6psc/nm-km @ 1550nm 20psec/nm-km Cutoff Wavelength 1030 - 1250nm Specified fiber parameters: Mode... directions, end-to-end All Fiber Optic Cables will be tested using the OTDR, making certain to test and record the optical quality of each cable after installation Testing one direction only Provide all printed readings, both before and after installation, so they can be included in the as-built documentation (Applicable to OSP cable, only) SECTION VI TECHNICAL STANDARDS The following technical standards. . .HARVARD UNIVERSITY Wire and Cable Standards SECTION IV UNIVERSITY INFORMATION SYSTEMS ROLE University Information Systems (UIS) can provide departments with the following assistance to ensure all wire and cable is installed in a thorough and professional manner UIS will work with departments during the entire installation... provide high-quality and economical voice and data services to the University The wire and cable standards described in this guide have helped to make the Network a reality for the University community Because the Network's architecture complies with international standards, investments in communications technology made by departments are protected and have put Harvard in an ideal position to take advantage . Network wire and cable standards. Some of the benefits of following wire and cable standards are: • By incorporating University Network standards in all wire. wire and cable standards. They are required to follow the University& apos;s Technical Standards (see Section VI) for wire and cable installation. These standards