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POWER-ZONE 4Low Voltage Metal-Enclosed DrawoutSwitchgear with MASTERPACT NWLow Voltage Power Circuit BreakersClass 6037CONTENTSSchneider Electric BrandsDescriptionPageProduct Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5General and Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Technical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Suggested Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
POWER-ZONE 4 SwitchgearProduct DescriptionSECTION CONTENTSSECTION 1—PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Equipment Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Equipment Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7311/99 1999 Schneider Electric All Rights Reserved
POWER-ZONE 4 SwitchgearProduct Description4 1999 Schneider Electric All Rights Reserved11/99
POWER-ZONE 4 SwitchgearIntroductionSECTION 1—PRODUCT DESCRIPTIONIntroductionPOWER-ZONE 4 low voltage metal-enclosed drawout switchgear is designed to provide superiorelectrical distribution, protection, and power quality management for the entire facility. The primecomponent of the switchgear is the MASTERPACT NW ANSI rated circuit breaker. POWER-ZONE 4switchgear is designed to maximize the functionality of the MASTERPACT NW circuit breaker, which, inturn, delivers maximum uptime, system selectivity, ease of maintenance and circuit protection. All of thisin the smallest footprint available for low voltage drawout switchgear.Features and Benefits POWER-ZONE 4 is designed and built toANSI C37.20.1 and is listed to UL 1558. MASTERPACT NW drawout low voltagepower circuit breakers are designed andbuilt to ANSI C37.13 and C37.16.Listed to UL1066. Short-circuit current rating up to 200 kAwithout fuses. High short-time withstand ratings up to100 kA for 30 cycles.Through-the-Door Access Family of field installable andupgradeable MICROLOGIC trip unitswith optional POWERLOGIC datacommunications features. Smallest equipment footprint available inthis product class. Front access to control andcommunications wire connections. Bolted copper bus provided as standard(up to 5000 A maximum). Large rear cable compartment pull areaallows maximum room for power cables. Bus provision for future equipmentexpansion.Circuit Breaker Compartmentwith Secondary Horizontaland Vertical Wireways System designed for maximum uptimewith low maintenance. Modular circuit breaker design for easyaddition of control accessories.POWER-ZONE 4 SwitchgearPOWERLOGIC SystemManager SoftwareFamily of MICROLOGIC Trip UnitsFamily of MASTERPACT NW Circuit Breakers511/99 1999 Schneider Electric All Rights Reserved
POWER-ZONE 4 SwitchgearFeatures and BenefitsCompartmentalizationStructures are compartmentalized and are built with barriers as required by ANSI C37.20.1. Thestructure has large conduit space within the main and feeder sections.UL ListingPOWER-ZONE 4 switchgear is designed and engineered to comply with UL1558 requirements.MASTERPACT NW circuit breakers are UL1066 listed. A UL label can be affixed where UL coverageexists for all component material, parts, and devices in a switchgear section.Functional CapacityHigh current carrying capacity frame sizes and high withstand rating make the MASTERPACT NWcircuit breaker ideal for application on today’s high capacity distribution systems.Maximum UptimeDrawout construction allows quick and simple replacement of circuit breaker elements. If anemergency occurs, circuit breakers may be removed from low-priority circuits and re-installed toserve high-priority circuits.Ease of MaintenanceMASTERPACT NW circuit breakers provide disconnecting and overload protection for the circuit itcontrols. Each is contained in an individual compartment and can be easily isolated from the energizedcircuit and withdrawn from the compartment for quick inspection, maintenance, or replacement. Theentire switchgear or any other feeder circuits need not be shut down during this operation, thusminimizing production downtime.Auxiliary Instrument CompartmentsOptional control power transformers, meters, and other control devices can be mounted in the auxiliaryinstrument compartments. These compartments are furnished with hinged doors for easy access.Secondary Horizontal and Vertical WirewaysThe secondary wiring design allows for front access to circuit breaker control and communicationswiring without removing the circuit breaker from its compartment. The vertical wireway is located on theright side of the circuit breaker for easy access and wiring installation. The horizontal wireway is locateddirectly above the circuit breaker, providing direct access to control and communication terminations.ANSI Interrupting and Short-Time (Withstand)POWER-ZONE 4 switchgear with MASTERPACT NW circuit breakers has the highest interrupting andshort-time (withstand) ratings for low voltage switchgear in the smallest physical size. The elimination oflimiter fuses for high interrupting circuit breakers reduces space and cost. The ANSI rated circuitbreaker’s improved coordination with downstream devices increase system uptime.Through-the-Door ConstructionMASTERPACT NW circuit breakers provide clear access to all circuit breaker controls, indicators, andtrip unit functionality without opening the compartment door. Circuit breaker racking is also achievedwith the compartment door closed.Disconnecting ContactsThe main disconnecting contacts (power plug-on fingers) on the rear of the circuit breaker are springloaded and self-aligning to ensure positive electrical contact when the circuit breaker is in the connectedposition. The secondary disconnecting contacts are located on the top front of the circuit breakerelement and are used for connecting the accessories to the control power source, other control circuits,or communication circuits.6 1999 Schneider Electric All Rights Reserved11/99
POWER-ZONE 4 SwitchgearStandards and RatingsMICROLOGIC Enhanced FunctionalityA new family of MICROLOGIC electronic and programmable trip units provide you with a choice ofexpanded information, power quality readings, and communication capabilities. MICROLOGIC trip unitscan be integrated into the optional POWERLOGIC system.POWERLOGIC Monitoring SystemPOWER-ZONE 4 switchgear is available with the POWERLOGIC metering, data acquisition, and controlsystem. The optional POWERLOGIC system is used in addition to, or in lieu of, the Type A, Type P, andType H MICROLOGIC trip units for the MASTERPACT NW circuit breaker. POWERLOGIC functions areincluded in MICROLOGIC high-end trip units. Several highly accurate circuit monitors are available towork in conjunction with the POWERLOGIC System Manager Software to manage and control yourelectrical distribution system.Equipment StandardsAll POWER-ZONE 4 switchgear is 100% rated; assembled and tested in an ISO 9001 facility toapplicable standards including:StandardDescriptionANSI C37.20.1Metal-enclosed low voltage circuit breaker switchgearANSI C.37.51Testing of metal-enclosed low voltage ac circuit breaker switchgearNEMA SG-5Power switchgear assembliesCAN/CSA C22.2 No. 31-M89Switchgear assembliesUBC and CBCZone 4 seismic applicationsUL 1558Switchgear assembliesAll MASTERPACT NW circuit breakers are 100% rated; assembled and tested in an ISO 9001 facility toapplicable standards including:StandardDescriptionANSI C37.13Low voltage ac power circuit breakers used in equipmentANSI C37.16Preferred rating, related requirement and application recommendations for low voltage powercircuit breakers and ac power circuit breakersANSI C37.17Trip devices for ac and general-purpose dc low voltage power circuit breakersANSI C37.50Testing of low voltage ac circuit breakersNEMA SG-3Low voltage circuit breakersUL 1066Low voltage circuit breakersEquipment RatingsApplication Voltage SystemsAmpacities600 Vac Maximum1600 A–5000 A(main circuit breaker or main lugs only)1Ø3W, 3Ø3W, 3Ø4W50/60 HzShort-Circuit Current Ratings240 V480 V600 VShort-Time Withstand Ratings42 kA42 kA42 kA42 kA65 kA65 kA65 kA65 kA85 kA85 kA85 kA85 kA200 kA200 kA130 kA100 kA (maximum)711/99 1999 Schneider Electric All Rights Reserved
POWER-ZONE 4 SwitchgearStandards and Ratings8 1999 Schneider Electric All Rights Reserved11/99
POWER-ZONE 4 SwitchgearGeneral and Application InformationSECTION CONTENTSSECTION 2—GENERAL AND APPLICATION INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13NEMA Type 1 Indoor Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13NEMA Type 3R Non-Walk-In Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14NEMA Type 3R Walk-In Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Control and Communications Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Control Conduit Entrances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Horizontal Wireway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Vertical Wireway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Control and Communications Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Rear Cable Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Bus Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Auxiliary Instrument Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Auxiliary Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Key Locks and Padlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Moving and Handling Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Lifter Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Traveling Lifter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Floor Crane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20MASTERPACT NW Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Through-the-Door Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Circuit Breaker Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Interruption and Short-Time (Withstand) Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Circuit Breaker Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Circuit Breaker Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Circuit Breaker Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Two-Step Stored Energy Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Circuit Breaker Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Circuit Breaker and Equipment Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26MICROLOGIC Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Basic Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Type A (Ammeter) Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Type P (Power Metering) Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Type H (Harmonics) Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28POWERLOGIC System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANSI C37.20.1 Metal-enclosed low voltage circuit breaker switchgear ANSI C.37.51 Testing of metal-enclosed low voltage ac circuit breaker switchgear NEMA SG-5 Power switchgear assemblies CAN/CSA C22.2 No. 31-M89 Switchgear assemblies UBC and CBC Zone 4 seismic applications UL 1558 Switchgear assemblies Standard Description ANSI C37.13 Low voltage ac power circuit breakers
