Pow-R-Line XD Switchboard - Eaton

Design Guide DG015003ENPow-R-Line XDSwitchboardGeneral DescriptionEffective May 202021.3-4Front and Rear AccessOvercurrent DevicesTransitionsPow-R-Line XD switchboard sections withindividually compartmentalized mainand feeder devices will be rear accessiblesections with bus bar extensions tothe rear cable compartment of theswitchboard. These sections align at thefront and the rear. Other sections maybe front aligned with the rear-accessiblesections mentioned above. These mightinclude group-mounted chassis feederbreaker sections, utility meteringconfigurations and other configurationoptions from the broad Pow-R-Line Xpertswitchboard device offering.To properly select and size overcurrentdevices for use in a switchboard, theallowable temperature rise must be takeninto account as to its effect on the trippingcharacteristics of the devices in questionper UL 891.For Pow-R-Line XD switchboards, a20-inch transition section is required for aPow-R-Line Xpert switchboard connectionor when close-coupling to an Eatonsourced transformer.Accordingly, the NECT requiresovercurrent devices to be rated not lessthan 125% of the continuous load theyare protecting. To comply with this, an80% derating factor must be used withall over current devices such as moldedcase breakers and FDPW fusible switchesunless they are tested and listed forapplication at 100% of the rating. AllMagnumE type and Power Defenseinsulated case circuit breakers are100% rated for continuous load.Auxiliary StructuresStandard Switchboard HeightStandard Pow-R-Line XD switchboardheight is 96.00 inches (2438.4 mm).An optional traveling breaker lift deviceis available for Pow-R-Line XD andincreases switchboard height to97.50 inches (2476.6 mm).Space Only for Future DevicesGroup-Mounted ConstructionWhere space only for future circuitprotective devices is required, theproper space and a blank filler platewill be supplied. Connections andmounting hardware are not included.Provision for Future DevicesWhere provisions for future circuitprotective devices are required, space forthe device, corresponding vertical bus,device connectors and the necessarymounting hardware will be supplied.Bus Bar SystemStandard bus in the Pow-R-Line XDswitchboard is silver-plated copper.Tin-plated copper is also available.Main bus and sub-main buses meet ULand NEMA standards for temperature riseon all Pow-R-Line Xpert switchboards.Utility Metering CompartmentsTo utilize utility metering compartmentsin a Pow-R-Line XD assembly, a 20-inchtransition is needed to connect afront-accessible Pow-R-Line Xpert orPow-R-Line C switchboard.Short-Circuit RatingStandard bus and connectors on allswitchboards are rated for use onsystems capable of producing up to65,000 A rms symmetrical short-circuitcurrent at the incoming terminals.Increased bus short-circuit ratings equalto that of connected switchboard devices,up to 100,000 A rms symmetrical, areavailable in Pow-R-Line XD switchboardswhen approved main devices areinstalled. UL labeled switchboard sectionsare marked with their applicable shortcircuit rating.Provision for BuswayEntrance and ExitBusway connections to switchboardsections include cutout and drilling inthe top of the switchboard with riserconnections from the switchboard deviceor bus, up to the point where the bus ductenters the switchboard. No connectionsare furnished external to the switchboard.These are normally mounted adjacentto service structures or distributionstructures, and used where incomingservice or feeder conductors requireadditional space or facilities not includedin the standard switchboard, such as:1. Mounted adjacent to a top connectedservice structure and used as a cablepull structure where service conductors are brought in underground.Auxiliary structures are the samedepth and height as the servicestructure, and are wide enough toaccommodate the incoming cables.2. Mounted adjacent to a servicestructure and used as a bus transitioncompartment for running riser busfrom the load-side of the servicestructure up to top outgoing busduct connection when distributionstructures are not required. Auxiliarystructures are the same depth andheight as service structures.In addition to the above applications,auxiliary structures may be mountedadjacent to a distribution structure andused as a structure for cable routing, busrouting, cable connections, control anddevice wiring, lighting panel or otherdevice that may be cable-connected to abranch circuit device in the distributionstructure. Dimensions are compatiblewith the arrangements required.In all transactions involving buswayattached to switchboards, it is essentialthat information regarding orientationof the busway with respect to the frontof the switchboard be supplied to thecoordinating assembly plant.Silver-plated copper riser connections arestandard. Tin-plated copper is available asan option.Refer to the Pow-R-Line XpertSwitchboard Design Guide forRLX section layout dimensions andadditional information.EATON www.eaton.com

Design Guide DG015003ENPow-R-Line XDSwitchboardGeneral DescriptionSwitchboards Used asService EquipmentEffective May 202021.3-5Automatic TransferØ1Ø2Ø3Service equipment is the electricalequipment that constitutes the maincontrol and means of power cutoff theelectric service (normally Power Companysupply) brought into the building.To StationGroundNeutralLinkWhere switchboards are to be used asservice equipment, certain NECT andUL requirements apply that necessitatemodifications not normally suppliedin switchboards.The following is a summary of therequirements that are pertinent tothe application of a switchboard forservice equipment:A. A switchboard with main lugs only(no main disconnect) must bedesigned so that all circuits in theswitchboard can be disconnectedfrom the supply source by theoperation of no more than sixoperating handles (breaker or switch).Switchboards equipped with maindisconnect devices are not subject tothe above six disconnect limitation, asthe entire board can be de-energizedwith the main disconnect device.Ground fault protection of equipmentmust be provided for solidly groundedwye electrical services of more than150 V to ground, but not exceeding600 V phase-to-phase for each servicedisconnecting means rated 1000 Aor more.B. For testing purposes, means are alsorequired to disconnect the switchboardneutral bus from the grounded serviceneutral conductor (single-phase,three-wire; and three-phase, fourwire systems).To comply with thisrequirement, a removable link (solidbar) is provided in the switchboardneutral bus.This link is generallylocated near the point where the mainfeeders enter the switch board or in thearea of the main disconnect devicewhere one is provided.To further comply with NEC and ULrequirements, a separate bonding strapis connected from the neutral bus tothe switchboard frame. This bondingconnection is located on the line side ofthe removable neutral link, maintaininga service ground to the switchboardframe when the test link is removed.See Figure 21.3-1.NBondingStrapEquipmentGround BusNØ1Ø2Ø3Switchboard FrameFigure 21.3-1. Neutral LinkUL labeling will clearly indicate serviceequipment listed switchboards.Underwriters LaboratoriesRequirements and LabelingAutomatic transfer and intelligent controlpackages are as follows:Eaton ATC-900 controller Automatic transfer for a two sourcelineup with no tie breaker Additional option for a 7-inchscreen available Eaton programmable logic controller(PLC) with Eaton touch screen Automatic transfer for main-tie-mainarrangement Standard sequence provided withconfigurable options Custom sequence of operationsavailable Eaton Power Systems Control(offered through Eaton’s EngineeringServices & Systems) Custom automatic transfers On-site commissioning Integration into existing networks The basic requirement for obtaining aUL label on a switchboard is that all thecomponent devices (breakers, switchesand so on) in the switchboard assemblyare UL listed. In addition, the switchboardmust comply with all applicableprovisions of UL 891.Today’s modern electrical systems requirethat switchboards offer a wide selectionof electrical devices, many of which donot fall within the scope of UL listeddevices. Therefore, the conditions underwhich a switchboard may be labeledare limited.Programmable Logic and ATC-900 ControllersListed below are several importantguidelines for consideration when aUL label is specified:1. UL nameplates, where applicable, aresupplied for each vertical structurerather than one common nameplatefor the complete switchboard lineup.Where all of the component devices inthe switchboard are UL listed and allapplicable provisions of UL 891 aremet, each of the switchboard sectionsmay be labeled.2. Individual vertical structures of aswitchboard may be labeled wherethey comply with UL requirements,although other vertical structures inthe same switchboard lineup may notmeet the UL standards, and will notbe labeled.3. All Pow-R-Line XD switchboards areUL labeled when all mounted devicesare UL listed.EATON www.eaton.com

Design Guide DG015003ENPow-R-Line XDSwitchboardDevicesEffective May 202021.3-6Molded Case Circuit BreakersThe drawout mechanism has threeprimary positions:Series G Drawout CasetteMolded Case Circuit Breakers Connected—the breaker is fullyconnected to the primary stabs andsecondary contacts Disconnected—both the primarystabs and the secondary contactsare disconnected Withdraw—the breaker can beremoved from the cassetteSome of the most common accessoriesand their function are described below.AccessoriesDrawout Cassette Molded Case Circuit BreakersProduct DescriptionThe drawout cassette is available for usewith JG, LG and NG, three- and four-polebreakers. The cassettes consist of twoseparate components: the movablemechanism, which attaches to thebreaker, and the stationary mechanism,which houses in the cassette. For theJG, LG and NG drawout cassettes, allnecessary parts for installation areincluded in the one catalog number.FeaturesFeatures of the drawout cassettes for theJG, LG and NG include: Trip on Drawout—breaker will trip if itis in the ON position when withdrawnfrom the cassetteSecondary Terminal Block—the drawoutcassettes include a secondary terminalblock for easier access when wiringlow-voltage accessories, includingshunts and undervoltage releasesFront Accessible—breakers can bedisconnected without removingdeadfront or gutter coversEase of Maintenance—rack out thebreaker through the dead-front coverwithout disconnecting the loadsidecables and remove disconnecteddrawout breaker using handlesSpace Savings—can be incorporatedinto flexible designs combiningdrawout with fixed-mounted MCCBsAuxiliary Switches—Provide circuitbreaker primary contact statusinformation. The auxiliary switch isused for remote indication and interlocksystem verification. These switchesmount internal to the breaker in theright side accessory cavity.Alarm Switches—Used for remoteindication of automatic trip operation.The switch automatically resets when thecircuit breaker is reset. These switchesmount internal to the breaker in the rightside accessory cavity.Removable Dead-Front Cover and CassetteZone Selective Interlocking—This featurecommunicates when a phase or groundfault is present.Arcflash Reduction MaintenanceSystemE (ARMS)—This featureincreases worker safety by providingan accelerated instantaneous trip unit toreduce arc flash. Additionally, LG, NG andRG frames with the ARMS feature includea fully adjustable instantaneous setting.Standards and CertificationsEaton Series G circuit breakers meetapplicable UL 489 and IEC 60947-2standards.Drawout Casettes in Switchboard AssemblyEATON www.eaton.com

Design Guide DG015003ENPow-R-Line XDSwitchboardDevicesPower Defense Molded CaseCircuit BreakersPower Defense Molded Case Circuit BreakersProduct DescriptionEaton’s globally accepted Power Defensemolded case circuit breaker (MCCB) can:Connect to your network or the cloudwith built-in communication capability Generate the data to help optimize yourfacility’s performance Mitigate arc flash to keep youremployees, customers and endusers safe Effective May 202021.3-7Modular AccessoriesExternal AccessoriesThe Power Defense molded case circuitbreakers feature new, modularaccessories that are designed to makecustomization of the breaker for theunique requirements of the applicationeasier than ever before. A common line ofauxiliary switch and bell alarms allow forinterchangeability between the differentPower Defense breaker frames, enablingthe final configuration of the breaker atthe point of use and minimizing theamount of inventory required. Compact,modular shunt trips and undervoltagereleases have been designed to be easilyinstalled and removed as the project orapplication dictates.Terminals—Multiple cable terminaloptions are available for each frame,providing alternatives to connect primarypower and loads to the circuit breaker.Additionally, control wire terminalsprovide a means to tap off control power.Multi-wire terminals on the load side ofthe breaker can also be used to distributethe load from the circuit breaker tomultiple devices without the use ofseparate distribution terminal blocks.Some of the most common accessoriesand their function are described below.Internal AccessoriesAuxiliary Switches—Provide circuit breakerprimary contact status information.The auxiliary switch is used for remoteindication and interlock system verification.These switches mount internal to thebreaker in the right side accessory cavity.The Power Defense MCCB portfolio isglobally adaptive to your footprint nomatter the application or projectrequirement. All frames have theavailability of global certificationsincluding IEC, CCC, UL and CSAT.Alarm Switches—Used for remoteindication of automatic trip operation.The switch automatically resets when thecircuit breaker is reset. These switchesmount internal to the breaker in the rightside accessory cavity.Eaton’s best-in-class support enablesyou to order readily available productfor on-time delivery, across the globe.Shunt Trip—Provides capability to trip thebreaker by remote control. Shunt trips aredesigned to be applied at specific AC orDC voltages. These devices are installedinternal to the breaker in the left sideaccessory cavity.Undervoltage ReleaseTerminal Shields—Provide protectionagainst accidental contact with liveterminations, as well as clearancebetween circuit breaker poles or adjacentcircuit breakers, and are required forsome terminal applications.Interphase Barriers—Offer additionalelectrical clearance between circuitbreaker poles for special terminationapplications.Locking Devices—Offer the capability tolock the breaker handle in the OFF or ONposition (trip-free operation allows thebreaker to trip when locked in the ONposition). Power Defense offers threeprimary types, including handle blocks,padlockable hasps, and provisions forKirk trapped key locks (Kirk lock must bepurchased separately).Standards and CertificationsPower Defense circuit breakersmeet applicable:UL 489CSA, C22.2 No. 5-02 IEC 60947-2 GB 14048.2-2008 (UVR)—Monitors a voltage, typically of aline voltage, and trips the circuit breakerwhen the voltage falls below 70% of thenominal voltage designated for the UVR.These devices are installed internal to thebreaker in the left side accessory cavity.EATON www.eaton.com

Design Guide DG015003ENPow-R-Line XDSwitchboardDevicesEffective May 202021.3-8Insulated Case Circuit BreakersDigitrip RMS Trip Unit Family forMagnum Circuit BreakersThe Magnum family of Digitrip RMS tripunits consists of four trip unit models,each providing increasing levels offeatures and options to enable theultimate selection to match applicationrequirements for protection,coordination, information, diagnosticsand communication:Magnum SB Low-Voltage InsulatedCase Circuit BreakersDigitrip RMS 520 enables the user asmany as nine phase and ground currentprotection settings for maximumflexibility in trip curve shaping andmulti-unit coordination, and addsground current protection settings Digitrip RMS 520M adds phase, neutraland ground current metering with afour-character LCD display window Digitrip RMS 520MC addscommunication of current values andbreaker status (open, closed, tripped),and Arcflash Reduction MaintenanceSystem for arc flash reduction Digitrip RMS 1150 providesprogrammability for moresophisticated distribution systems Increased protection andcoordination capabilities Systems monitoring informationincluding power factor, voltage,current, harmonic distortion valuesand waveform capture with a brightthree-line (eight characters per line)LED display Two programmable contacts forcustomer use Time and date stamping of tripevents for improved troubleshootingand diagnostics Accuracy of 1% on current andvoltage values and 2% on energyand power Systems diagnostic information andbreaker health menu Communications Arcflash Reduction MaintenanceSystem for arc flash reduction Magnum SB in Pow-R-Line XD AssemblyStandards and CertificationsUL and ANSI Test CertificationsMagnum SB Insulated Case Circuit BreakerProduct DescriptionMagnum SB is a low-voltage insulatedcase circuit breaker family designed forthe performance and economicrequirements of UL 891 switchboards.Magnum SB insulated case circuitbreakers have interruption ratings upto 100 kA at 480 Vac with continuouscurrent ratings up to 5000 A Magnum SB insulated case circuitbreakers have lighter-duty short-timewithstand ratings and fixed internalinstantaneous trips on most ratings,which is characteristic of UL 489molded case breakers commonly usedin UL 891 switchboards. This providesfor greater economy and excellentcoordination and selectivity for mostcommercial applications Fixed internal instantaneous trips willbe phased in on all Magnum SBinsulated case circuit breakers rated3000 A and below to provide an extrasafety factor by reducing the energylet-through to downstream circuits atthe maximum instantaneous trip pointand to facilitate feeder circuit breakerprotection in UL 891 switchboards with3-cycle bus bracingMagnum SB meets or exceeds theapplicable ANSI, NEMA, UL and CSAstandards, including: ANSI C37.13 (Low Voltage AC PowerCircuit Breakers Used in Enclosures)ANSI C37.16 (Preferred Ratings, RelatedRequirements, and ApplicationRecommendations for Low VoltagePower Circuit Breakers and AC PowerCircuit Breakers)ANSI C37.17 (Trip Devices for AC andGeneral Purpose DC Low Voltage PowerCircuit Breakers)ANSI C37.50 (Test Procedures for LowVoltage AC Power Circuit BreakersUsed in Enclosures)UL 489/1066 (Standard for Low VoltageAC and DC Power Circuit BreakersUsed in Enclosures)NEMA SG3 (This standard adoptsANSI C37.16 in its entirety)Comprehensive Enclosure SolutionsMagnum SB has proven performance inEaton manufactured switchboards withthe following test certifications: UL 891 (Certified Pow-R-Line LowVoltage Switchboards)Approvals and MarksUL listed: Magnum DS Breaker UL FileE52096 and Cassette UL File E204565.EATON www.eaton.com

Design Guide DG015003ENPow-R-Line XDSwitchboardDevicesEffective May 202021.3-9Power Defense InsulatedCase Circuit BreakersThe Power Defense ICCB is availablewith a variety of connection options thatgive you the ability to efficiently lay outdistribution equipment. It is important inswitchboards that breakers are easilyaccessible for maintenance, inspectionand operation. The cassette design allowsyou to inspect parts without removingthe cassette from the switchboard cell.The design of the breaker and cassetteenables full use of the breaker handleand cassette rails with a gloved hand,allowing electricians to remain in theappropriate PPE protective gear.Power Defense Insulated CaseCircuit Breakers, NF and RF FramesProduct DescriptionThe Power Defense ICCB NF frameprovides the performance of a powercircuit breaker—up to 1200 A and 65 kAinterruption capacity at 480 Vac—in thecompact size of a molded case breaker.It offers all the protection, features andflexibility you would expect in an aircircuit breaker, in a compact footprint.The RF frame expands protectioncapabilities up to 3000 A with aninterruption capacity of 100 kAat 480 Vac.UL 489 breakers feature the innovativePower Xpert Release (PXR) trip units. PXRtrip units are available with a wide varietyof

and 4000/6000/8000 series Monitor and communicate with Eaton trip units and meters through one user interface with Power Xpert Dashboard Lite Processor Voltage transformers: Voltage primary and secondary fuses. The primary fuses are of the current limiting type. Cu