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AC Power
For Business-Critical Continuity™
® ™
Liebert Series 610 UPS
Operation & Maintenance Manual - 100-1000kVA, 60Hz, Three Phase Multi-Module
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BATTERY CABINET PRECAUTIONS The following warning applies to all battery cabinets supplied with UPS systems. Additional warn- ings and cautions applicable to battery cabinets may be found in Important Safety Instructions and 4.4 - Battery Maintenance. WARNING ! Internal battery strapping must be verified by manufacturer prior to moving a battery cabinet (after initial installation). • Battery cabinets contain non-spillable batteries. • Keep units upright. • Do not stack. • Do not tilt. Fail
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TABLE OF CONTENTS BATTERY CABINET PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVER CONTACTING LIEBERT FOR SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVER IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3.3 Modes of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 3.3.1 Load on Bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 3.3.2 OK to Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 3.3.3 Momentary Overloads . . . . . . . . . . . . . . . . . . .
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FIGURES Figure 1 Multi-Module UPS, 100-500kVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Figure 2 Multi-Module UPS, 500-750kVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 3 System Control Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 4 SCC controls and display screen with example
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Figure 50 Battery equalize screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Figure 51 SCC status and alarm message areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Figure 52 Load on bypass, UPS not available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Figure 53 Load on bypass, UPS available . . . . . . . . . .
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IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation and mainte- nance of your Liebert Series 610 UPS and batteries. WARNING ! Exercise extreme care when handling UPS cabinets to avoid equipment damage or injury to personnel. Refer to separate installation manual for equipment handling information and installation procedures. Follow all battery safety precautions in 4.0 - Maintenance when installing, charg
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Introduction 1.0 INTRODUCTION 1.1 System Description The role of the parallel-redundant multi-module UPS system is to supply uninterruptible, clean power to the critical load. The UPS maintains a full-voltage, low-distortion output, even if the utility source power sags, becomes distorted or fails. If there is an outage of the source power, the UPS maintains power to the load until an alternate source of power is activated or until the original power source is restored. If input AC power is n
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Introduction In the unlikely event of a fault within the UPS, the SCC control logic, which continuously monitors all critical circuits within the UPS system, transfers the load to bypass without interruption and simul- taneously activates local and remote alarms. If a fault is detected in an individual UPS module, that module is automatically disconnected from the critical bus and shut down. A Module Off Line status message will appear at the SCC display. The module can be manually returned t
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Introduction Figure 3 System Control Cabinets Types of System Control Cabinets (SCCs) • SCCT—A stand-alone cabinet containing system control logic for up to six UPS modules, a static bypass switch, manually operated disconnects for the static bypass switch and two motor-oper- ated system circuit breakers. • SCCI—System control logic and static bypass switch are integrated into a switchboard cabinet manufactured by others, which also includes the system circuit breakers. • SCCC—An integrated c
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Introduction Other Factors to Consider Reliability depends on more than just UPS module design. Improper installation can cause any sys- tem to fail. To prevent this, customer engineers from Liebert Global Services thoroughly inspect the installation of all our systems to ensure they are installed properly and operating within performance specifications. Once a UPS is properly installed, you—the on-site equipment operator—are the most important fac- tor in preventing critical bus failures or u
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Introduction 1.4.3 Recharge After the utility source power is restored or an alternate power source becomes available, each recti- fier/charger slowly walks-in to once again power the inverters and recharge the battery plant. 1.4.4 Overload Overloads in critical systems may be caused by inrush currents during connected equipment start-up or by faults in the critical load or distribution network. The Liebert Series 610 UPS system can main- tain full output voltage regulation while sustaining the
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Introduction Figure 4 SCC controls and display screen with example of the Monitor/Mimic screen © 1989-2003 7
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Introduction The operator controls and Monitor/Mimic screen for the System Control Cabinet (SCC) are shown in Figure 4. The controls and display screen for each UPS module are shown in Figure 5. Each cabinet (SCC or module) has the displays and controls required to monitor and perform its functions. Figure 4 shows a three-module system designed for redundant operation. A multi-module UPS sys- tem may include up to six (6) modules for each SCC. Detailed instructions on how to interpret the disp
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Introduction 2. Battery Racks or Cabinets The battery racks are specifically designed for stationary service batteries. They are painted with electrolyte-resistant paint for corrosion resistance. Battery cabinets are available for 150 through 600kVA modules. 3. Module Battery Disconnect The UPS system utilizes a separate Module Battery Disconnect for remotely located batteries. A sensing circuit in the UPS module, set at the battery low voltage limit, trips the Module Battery Disconnect to
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Theory of Operation 2.0 THEORY OF OPERATION 2.1 General Component Descriptions The UPS system includes all of the equipment necessary to continuously provide computer-grade AC power to a critical load, even when there is an interruption of the utility power. It consists of a System Control Cabinet (SCC), UPS modules and a back-up battery plant. Refer to Figure 6 and Figure 7. Except where otherwise noted, the configuration is presumed to be parallel-redundant (with at least one more UPS modu
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Theory of Operation Figure 6 UPS module block diagram MULTI-MODULE UPS SYSTEM Control Wiring To SCC CONTROL POWER Controls Utility Output Rectifier/ Input Inverter Power Charger Power Input Output To SCC CB CB Battery MBD CB - Circuit Breaker MBD - Module Battery Disconnect SCC - System Control Cabinet 2.1.2 UPS Module The UPS module consists of module controls, a rectifier/charger, an inverter, protective devices and other accessories. Module Controls: The module control logic monitors perform
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Theory of Operation 2.2 Detailed Component Descriptions 2.2.1 Controls Hardware The Liebert Series 610 UPS Operator Interface Display System is designed to provide all of the infor- mation that is required for the operation of each UPS cabinet (the System Control Cabinet and each module). The following is a list of the hardware features: 1. The control logic performs automatic operations with minimal operator interface. The limited number of manual controls are easy-to-use. 2. Each Liebert Ser
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Theory of Operation 2.2.2 Rectifier/Charger The UPS module rectifier/charger consists of an input circuit breaker, AC current limiting circuit, battery equalize charge circuit, DC filter, battery charge current limiting circuit and bridge rectifiers. Optional items are an isolation transformer and a 12-pulse rectifier (these are standard on 1000kVA units). Operation The rectifier/charger converts the AC input power to DC power. This conversion is accomplished by 3-phase bridge rectifiers usi
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Theory of Operation 2.2.3 Battery Charging Circuit The UPS module charging circuit is capable of recharging the battery plant to 95% of full capacity within 10 times the discharge time. Recharging the last 5% takes longer because of characteristics inherent in the battery. DC ripple voltage is limited to less than 0.5% RMS to preserve battery life during long-term float charging while the UPS system is operating on utility source power. Multiple UPS module rectifier/chargers can share a commo
