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Transcript
Low Voltage Switchgear Primary and Secondary Unit Substations MVS Primary Switch and Low Voltage Metal-Enclosed Switchgear 17.2 Contents Description Page Primary and Secondary Unit Substations Standards and Certifications . . . . . . . . . . . . . . . . . . . . . . 108 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Technical Data and Specifications . . . . . . . . . . . . . . . . . . 108 17 17 17 17 17 17 17 17 17 17 Product Description Application Description Unit Substations Most switchgear assemblies are configured as unit substations. A unit substation, as referred to in this publication, is defined as a coordinated assembly consisting of three-phase transformers with high-voltage incoming line sections and an assembly of low voltage distribution sections. Liquid-Filled Transformers ● Mineral oil ● FR3 ● BIOTEMP® ● Silicon Dry-Type Transformers ● VPI ● VPE ● RESIBLOC® ● Cast coil Secondary Unit Substations ● Liquid-filled or dry-type transformer ● Transformer kVA 112.5 through 3750 ● Low voltage—208, 240, 480 or 600V Primary Unit Substations Liquid-filled or dry-type transformer ● Transformer kVA 500 through 20 MVA ● Low voltage—2400V through 24.5 kV Eaton’s unit substations follow the system concept of locating transformers as close as practicable to areas of load concentration at usage voltages, thus minimizing the lengths of secondary distribution cables and buses. This concept provides several basic advantages, such as: ● ● ● ● ● Unit substations may be indoor or outdoor, with a selection of high voltage incoming sections, a choice of transformer types and an arrangement of switchgear to suit the application. ● ● ● ● Reduced power losses Improved voltage regulation Improved service continuity Reduced likelihood of faults Increased flexibility Minimized installation expense Elimination of the need for vaults due to availability of non-flammable types of transformers Efficient space utilization Advantages of Unit Substations ● Complete coordination, both mechanical and electrical ● Extreme flexibility with wide choice of components and ratings to meet exact application requirements ● Optimum safety to operators ● Modern design ● Meets all applicable ANSI, IEEE®, NEMA and UL standards 17 17 17 17 17 17 17 17 17 Features, Benefits and Functions Refer to TD.49A.01.T.E for primary unit substations and TD.49A.02.T.E for secondary unit substations. Options Refer to TD.49A.01.T.E for primary unit substations and TD.49A.02.T.E for secondary unit substations. 17 17 17 17 17 17 17 17 17 17 17 Volume 3—Power Distribution and Control Assemblies CA08100004E—December 2010 www.eaton.com For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616 107 17.2 Low Voltage Switchgear Primary and Secondary Unit Substations 17 Standards and Certifications 17 Refer to TD.49A.01.T.E for primary unit substations and TD.49A.02.T.E for secondary unit substations. 17 17 17 Product Selection Contact Eaton for details and part numbers for CSA-approved units. 17 17 Unit substations are engineered to order and have multiple configurations. Contact Eaton for configurations, pricing and availability. Technical Data and Specifications Refer to TD.49A.01.T.E for primary unit substations and TD.49A.02.T.E for secondary unit substations. Product Specifications Refer to Section 16312 of the Product Specification Guide for primary unit substations and Section 16311 of the Product Specification Guide for secondary unit substations. 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 108 Volume 3—Power Distribution and Control Assemblies CA08100004E—December 2010 www.eaton.com For Immediate Delivery or Tech Support call KMParts.com at (866) 595-9616 Index A Advantages, 1 advantages, 1 all, 1 an, 1 and, 1-2 ANSI, 1 applicable, 1 Application, 1 application, 1 approved, 2 are, 1-2 areas, 1 arrangement, 1 as, 1 Assemblies, 1-2 assemblies, 1 assembly, 1 at, 1-2 availability, 1-2 B basic, 1 be, 1 Benefits, 1 BIOTEMP, 1 both, 1 buses, 1 C CA, 1-2 cables, 1 call, 1-2 Cast, 1 Certifications, 1-2 choice, 1 close, 1 coil, 1 com, 1-2 Complete, 1 components, 1 concentration, 1 concept, 1 configurations, 2 configured, 1 consisting, 1 Contact, 2 Contents, 1 continuity, 1 Control, 1-2 coordinated, 1 coordination, 1 CSA, 2 Index D G Data, 1-2 December, 1-2 defined, 1 Delivery, 1-2 Description, 1 design, 1 details, 2 Distribution, 1-2 distribution, 1 Dry, 1 dry, 1 due, 1 Guide, 2 E Eaton, 1-2 eaton, 1-2 Efficient, 1 electrical, 1 Elimination, 1 Enclosed, 1 engineered, 2 exact, 1 expense, 1 Extreme, 1 F faults, 1 Features, 1 Filled, 1 filled, 1 flammable, 1 flexibility, 1 follow, 1 For, 1-2 for, 1-2 FR, 1 Functions, 1 H have, 2 high, 1 I IEEE, 1 Immediate, 1-2 Improved, 1 in, 1 incoming, 1 Increased, 1 indoor, 1 installation, 1 is, 1 K KMParts, 1-2 kV, 1 kVA, 1 L lengths, 1 likelihood, 1 Index line, 1 Liquid, 1 load, 1 locating, 1 losses, 1 Low, 1-2 low, 1 M may, 1 mechanical, 1 meet, 1 Meets, 1 Metal, 1 Mineral, 1 Minimized, 1 minimizing, 1 Modern, 1 Most, 1 multiple, 2 MVA, 1 MVS, 1 N need, 1 NEMA, 1 non, 1 numbers, 2 O of, 1-2 oil, 1 operators, 1 Optimum, 1 Options, 1 or, 1-2 order, 2 outdoor, 1 P Page, 1 part, 2 phase, 1 Power, 1-2 power, 1 practicable, 1 pricing, 2 Primary, 1-2 primary, 1-2 Product, 1-2 provides, 1 publication, 1 R ransformers, 1 ratings, 1 Reduced, 1 Refer, 1-2 referred, 1 regulation, 1 requirements, 1 RESIBLOC, 1 S safety, 1 Secondary, 1-2 secondary, 1-2 Section, 2 sections, 1 Selection, 2 selection, 1 service, 1 Index several, 1 Silicon, 1 space, 1 Specification, 2 Specifications, 1-2 Standards, 1-2 standards, 1 substation, 1 Substations, 1-2 substations, 1-2 such, 1 suit, 1 Support, 1-2 Switch, 1 Switchgear, 1-2 switchgear, 1 system, 1 usage, 1 utilization, 1 T W TD, 1-2 Tech, 1-2 Technical, 1-2 the, 1-2 This, 1 this, 1 three, 1 through, 1 thus, 1 to, 1-2 Transformer, 1 transformer, 1 Transformers, 1 transformers, 1 Type, 1 type, 1 types, 1 wide, 1 with, 1 www, 1-2 U UL, 1 Unit, 1-2 unit, 1-2 units, 2 V vaults, 1 Voltage, 1-2 voltage, 1 voltages, 1 Volume, 1-2 VPE, 1 VPI, 1