Emerson 480V user manual Cabling Procedure, Common Input Connections, Dual Input Connections

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Electrical Connections

2.1.7 Cabling Procedure

! CAUTION

The operations described in this section must be performed by authorized electricians or qualified technical personnel. If you have any difficulties, contact your local Liebert representative or Liebert Global Services.

NOTE

Hydraulic pressure pliers, combinative tools and piston ring pliers should be used to connect AC wiring.

Once the equipment has been positioned and secured for operation, and the battery and ground col- lars have been connected (see 2.1.4 - Cable Connections), connect the power cables as described below. (Study the reference drawing in 6.0 - Installation Drawings.)

1.Verify that all incoming high and low voltage power circuits are de-energized and locked out or tagged out before installing cables or making any electrical connections.

2.Remove the front protective cover to gain easier access to the connections busbars.

3.Connect the safety ground and any easier bonding ground bus cables to the copper ground busbar located on the bottom of the equipment below the power connections. All cabinets in the UPS system must be connected to the user’s ground connection.

NOTE

The grounding bonding arrangement must comply with the National Electrical Code and all applicable local codes.

4. Identify and make power connections with incoming cables according to Steps 5 through 9.

Common Input Connections

5.For common bypass and rectifier inputs, connect the AC input supply cables between the power distribution panel and the UPS input busbars (A-B-C terminals) and tighten the connections to 88 lb-in. (10 N-m) using the M8 bolt provided.

Dual Input Connections

6.For the bypass, connect the AC input supply cables between the power distribution panel and the UPS input busbars (A-B-C terminals) and tighten the connections to 88 lb-in. (10 N-m) using the M8 bolt provided.

7.For the Rectifier Input, connect AC input supply cables between the power distribution panel and the UPS input circuit breaker (A-B-C terminals).

NOTE

Both the rectifier and bypass feeds MUST come from the same utility source.

Output System Connections—Ensure Correct Phase Rotation

8.Connect the system output cables between the UPS output busbars (A-B-C terminals) and the critical load and tighten the connections to 88 lb-in. (10 N-m) (M8 bolt).

! WARNING

If the load equipment will not be ready to accept power on the arrival of the commissioning engineer, then ensure that the system output cables are safely isolated.

Observe the battery cable polarity. Be sure that the battery connector is made with the cor- rect polarity.

9. Refit all protective covers removed for cable installation

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Contents Liebert NX UPS Page Table of Contents Options UPS SpecificationsOperator Control and Display Panel Operating Instructions Pop-Up WindowsSpecifications and Technical Data Appendix a UPS Status MessagesTables Page Important Safety Instructions Battery Cabinet Precautions Glossary of Symbols Installation External InspectionsPreliminary Checks Internal InspectionsUPS Location Mechanical Considerations Battery LocationConsiderations in Moving the Liebert NX Special Considerations for Parallel SystemsCable Entry Floor InstallationClearances System CompositionCabinet arrangement-Liebert NX units and battery cabinets UPS Cable Rating Power CablingLug Size and Torque Requirements UPS Input Configuration Cabling GuidelinesCable Connections Input and output busbarsProtective Devices Safety GroundUPS Rectifier and Bypass Input Supply Common Input Connections Cabling ProcedureOutput System Connections-Ensure Correct Phase Rotation Dual Input ConnectionsMonitor Board Features Frequency Converter ModeControl Cables Dry Contacts Input Dry Contacts Maintenance Bypass Cabinet InterfaceMaintenance bypass cabinet interface Input dry contacts atBCB Control Interface BCB control interfaceOutput Dry Contacts Inverter mode relay centerMain input fault relay center Output dry contact relaysEPO input contact relays EPO Input-OptionalIndicates Pin Safety IntroductionExternal Battery Cabinet Installation Battery CabinetsInstallation Considerations Connecting the BatteriesInsulated Post Tray Handle For Cabling Non-Standard Batteries Connecting the Battery Cabinet to the UPSBCB Shunt Trip This power must be UPS protected Alber Monitoring System-OptionalPerformance Requirements LBS Cable and SettingsLoad Bus Synchronization LBS CableFeatures of Parallel System Configuring Parallel System OperationGeneral Operating Principles Redundancy Paralleling Installing Parallel SystemOperation Modes Summary Conditions for Parallel System Cabinet InstallationPower Cables Preliminary ChecksAuxiliary Dry Contact Cables InterconnectingCables QByp Q1Ext Q2ExtTo Load Normally Open EPO Normally Closed EPOUPS mechanical characteristics UPS Mechanical CharacteristicsEnvironmental characteristics Conformity and StandardsUPS Electrical Characteristics UPS terminalRated Power kVA 100 120 Rectifier input powerLiebert approved replacement batteries Battery Manufacturer Models SuppliedInverter Output DC Intermediate CircuitBypass Input Left Side GND Left Side View Front View Max. Door Swing U3819205 Ext Batt530628 Pg , Rev Battery Breaker External Battery CabinetAuxiliary Contacts Top Top Front Right Side Front Rear SystemRear FRONTOutput Run From Conductors Ph A, B, C UPS Outputs Ph A, B, C System InputPh A, B, C UPS Inputs AC OutputPh A, B, C System Outputs Utility UPS #1-UPS #4 Module AC Ph A, B, C UPS InputsGround UPS Isometric View U3819301Single module block diagram dual input configuration General DescriptionBypass Mode Normal ModeBattery Mode Bypass SuppliesMaintenance Mode Parallel Redundancy Mode System ExpansionOperator Control Panel Display Panel LayoutMimic indicators Control buttons Navigation keys Detailed view of control panelMimic Display Indicators Mimic display status indicatorsControl Buttons Control buttonsAudible Buzzer LCD OverviewIcons for navigation keys Navigation KeysUPS System Information Description of items in UPS system windowLCD Menus and Data Items Mains Descriptions of UPS menus and data window itemsMenu Type Item Type Explanation InputLanguage Selection Start/stop BatteryTests Current Date and Time Set date and timeUPS Status Messages Current status and history log recordsTypes of LCD Screens Default ScreenOpening Display UPS Help Screen Screen Saver WindowPop-Up Windows Liebert NX Operating Modes UPS operating modesCircuit Breakers Circuit breakersIndicator State Startup ProcedureUPS Startup Switch from Normal Mode to Bypass Mode Switch from Bypass Mode to Normal ModeMaintenance Bypass Procedure and Powering Down the UPS Auto Restart Emergency Shutdown With EPOBattery Undervoltage Pre-Warning Battery ProtectionMulti-Module System Procedures Battery End-of-Discharge EOD ProtectionTie breaker Inserting One Module into a Multi-Module System LED Function StatusShutdown Procedure-Complete UPS and Load Shutdown Commissioning a Parallel SystemParallel System Start Up Analog Input Interface Power OutputCommunication and Other User Terminals Liebert IntelliSlot CommunicationComments See 10.1.5 ConfiguringLiebert NX communication options Baud RatesConfiguring Baud Rates Liebert IntelliSlot Web card display Relay Card Relay Card pin configurationRelay card jumper configuration Pin Function OperationAssignment MultiPort 4 CardPin Description LBS Mode-Load Bus Synchronization Remote Alarm MonitorReplacing Dust Filters Lug Size and Torque Requirements Torque specificationsBattery torque rating Cable Lengths Floor to Connection Point Inside UPSDistance to connection points on the Liebert NX UPS Parallel system current tableCable size and tightening torques External cabinet dimensions, including side panelsLead/Lag ratings 250 10 N*m Battery Run Times Estimated battery run time, minutesUPS status messages Services at 800-543-2378 for assistanceEvent Message Description / Suggested Action if any Bypass voltage exceeds the limit High ambient air temperatureBypass voltage is beyond the normal range Software according to the customer’s agreementInverter STS Fail Error can also leads to the alarmAlarm if applicable Condition is removedEmergency Power Off EPOUPS status messages UPS Status Messages Page Ti n Ne tIti That
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480V specifications

The Emerson 480V power systems play a critical role in modern industrial applications, providing reliable and efficient power distribution. These systems are designed for facilities that require robust performance and operational efficiency while adhering to safety regulations. With voltage ratings at 480V, they cater primarily to industries such as manufacturing, data centers, and commercial buildings.

One of the main features of the Emerson 480V systems is their scalability. These systems can be easily adapted and expanded as operational demands grow, thereby reducing initial investment costs and providing a flexible solution for evolving business needs. This ability to scale is crucial in a fast-paced environment where demands can change rapidly.

The Emerson 480V systems also incorporate advanced technologies for improved performance and safety. One key technology is the use of smart grid solutions. This enables real-time monitoring, diagnostics, and control, allowing facility managers to optimize energy consumption and reduce operational costs. Furthermore, these systems often include integrated protection devices that enhance safety measures by minimizing the risk of electrical faults, overloads, or short circuits.

Energy efficiency is another characteristic that distinguishes Emerson 480V systems from traditional alternatives. With advanced power management features, these systems effectively reduce energy waste and lower electricity bills. Emerson’s commitment to sustainability is evident in its designs, which aim to minimize environmental impact through energy-efficient technologies.

The build quality of Emerson 480V systems is also noteworthy. They are designed to withstand harsh industrial environments and are constructed with high-grade materials that promote longevity and reliability. The modular design allows for easy maintenance and repair, which further extends the lifespan of the system.

Additionally, Emerson 480V systems are equipped with user-friendly interfaces that facilitate ease of operation. This ensures that operators can efficiently manage and control power distribution without extensive training. The combination of performance, scalability, safety features, and user-centric design makes Emerson 480V systems an ideal choice for businesses looking to enhance their electrical infrastructure.

In summary, Emerson 480V power systems are a leading solution for industrial power distribution, characterized by their scalability, smart technology integration, energy efficiency, robust build quality, and user-friendly operation. These attributes make them a valuable investment for any organization aiming to improve its electrical management and operational performance.
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