Liebert Series 610 User Manual
Continuous power-tie configuration multi-module ups
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Also See for Series 610:
- Operation & maintenance manual (120 pages) ,
- Operation & maintenance manual (104 pages) ,
- Installation manual (88 pages)
Related Manuals for Liebert Series 610
Summary of Contents for Liebert Series 610
- Page 1 OWER VAILABILITY ONTINUOUS OWER ONFIGURATION ANUAL Series 610 Multi-Module UPS...
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Page 3: Table Of Contents
YSTEM ESCRIPTION Function ..............1 System Flexibility. - Page 4 PERATING NSTRUCTIONS Initial System Start-Up ............25 Basic Operation .
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Page 5: System Description
(e.g., a dropped wrench) on one system will cause a failure in a second system. Liebert has minimized the risk of system-to-system electrical noise susceptibility and faults in sys- tem-to-system copper wire control circuitry through the use of fiber-optic technology as well as trans- former and impedance isolation techniques in critical control circuits. -
Page 6: Figure 1 Basic Dual-Bus Power-Tie One-Line Diagram
System Description Figure 1 Basic Dual-Bus Power-Tie one-line diagram... -
Page 7: Figure 2 Power-Tie Systems - Fault Isolation Issues
System Description Figure 2 Power-Tie systems - fault isolation issues... -
Page 8: Figure 3 Power-Tie Systems - Control Interface Diagram
System Description Figure 3 Power-Tie systems - control interface diagram... -
Page 9: Control System Features
A key design requirement for maximizing multiple system reliability and inverter availability in tied configurations is assuring maximum system independence under the normal, separated operating conditions. Liebert has incorporated a number of unique solutions in your Power-Tie System to accomplish these high availability/high reliability performance goals: Digital Controls Digital Controls provide more precise control than analog techniques. -
Page 10: Momentary Tie Operation
Series 610 UPS systems (as well as previous Series 500 designs). The only time intersystem controls are active is during the actual operation of transferring loads back and forth between the UPS systems, a period of a few cycles. -
Page 11: Continuous Tie
Continuous Tie See Figure 3. The Liebert Continuous Tie system is a topology that extends the concept of a manually initiated momentary tie of UPS critical load buses by providing the capability to continuously parallel the out- put buses of two otherwise independent UPS Systems. -
Page 12: Tie System Components
Tie System Components See Figure 4. A Liebert Power-Tie Uninterruptible Power System consists of the following basic components: 1. Two complete, independent UPSs with individual load buses, each with the capability to source the combined critical load of the two load buses. Each of the two UPSs may be a single-module system (SMS) or a multi-module system (MMS). -
Page 13: Modes Of Operation
1.5.5 Modes of Operation See Figure 4. The Power-Tie Uninterruptible Power System is designed to operate in the following modes: 1. Normal - Each load bus is fed from its respective UPS and the tie breaker is open. Each inverter is synchronized to its respective bypass source. -
Page 14: Figure 4 Power-Tie System One-Line Diagram
System Description Figure 4 Power-Tie system one-line diagram... -
Page 15: Operation Description
PERATION ESCRIPTION There are two types of operations which can be performed with the Liebert Continuous Power-Tie System. • Create a continuous tie between the critical buses of two UPS systems • Transfer of a critical load between two UPS systems... -
Page 16: Figure 5 Control Panel Layout
Operation Description Figure 5 Control panel layout... -
Page 17: Separating Tied Systems
Separating Tied Systems The following sequence of operations describes the actions taken to separate two tied UPS systems. Synchronize Systems From the CONTINUOUS TIE CONTROL section, press the SYNCHRONIZE SYSTEMS button. The button’s light turns off to provide a visual indication of the operator’s intention to separate the sys- tems. -
Page 18: Combined Loads On One System From Continuous Tie Operation
Design Criteria The ultimate power goal in the design of the Liebert Continuous Tie System is to provide maximum UPS availability and maintainability without compromising the inherent reliability of the UPS sys- tems. We have designed the Continuous Power-Tie system to minimize or eliminate possible failure modes and their effect on the system. - Page 19 In addition, all these status signals have impedance protection between the signal wire connec- tions and the system power supplies and ground. The Tie Control’s power supply can use either UPS system’s output as its source and the Tie Control power supply employs transformer isolation.
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Page 20: Figure 6 Power-Tie System - Fault Isolation Issues
Operation Description Figure 6 Power-Tie system - fault isolation issues... -
Page 21: Figure 7 Power-Tie Systems - Fault Tolerance
Operation Description Figure 7 Power-Tie systems - fault tolerance... -
Page 22: Improper User Operation
Operation Description Improper User Operation See Figures 4 and 5. The Power-Tie Operator controls and logic are designed so that improper opera- tor use does not directly cause a loss of critical bus functions. Additional security functions, such as removable key switches, are available as system options. Transfer Operation Transfer functions require two push-button operations. -
Page 23: Tie Circuit Breaker Or Logic Faults
Tie Circuit Breaker or Logic Faults The Continuous Power-Tie system has been designed to anticipate circuit breaker and logic faults. Should a circuit breaker or logic fault occur, the Power-Tie system maintains the critical bus function under fault conditions 2.8.1 What Happens If a Failure Occurs During a Power Transfer During normal operation, the Power-Tie logic maintains system isolation. -
Page 24: Control Panel Description
ONTROL ANEL Refer to Figure 5. Mimic Panel The Mimic panel consists of the following: • UPS SYSTEM 1 - PRIMARY BYPASS • UPS SYSTEM 2 - PRlMARY BYPASS • UPS SYSTEM 1 - ON BYPASS • UPS SYSTEM 2 - ON BYPASS •... -
Page 25: Load Transfer Controls
Control Panel Description Tie Circuit Breaker These two lights indicate the OPEN (Red light) or CLOSED (Green light) state of the Tie circuit breaker. Load 1 - Normal This light indicates that Load 1 is being supplied by UPS System 1. Load 1 supplied by UPS system 1 represents the normal operating mode. - Page 26 Control Panel Description OK to Transfer Load 2 to System 2 This light indicates that it is safe to transfer Load 2 from UPS System 1 to UPS System 2. The trans- fer occurs when the PUSH TO TRANSFER AFTER OK button is pressed, but only if this light is on. Transfer Control Disabled This light indicates that load transfers are not allowed because the systems are currently being put in parallel operation.
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Page 27: Continuous Tie Control
The primary sync indicator is based on UPS module sync bus coincidence. This light normally turns on while the systems are synchronizing prior to a Tie or Transfer operation. If the light does not turn off, contact Liebert Global Services for assistance. Control Panel Description... -
Page 28: Manual Controls
This light indicates that a logic failure has occurred. No Tie operations are allowed while this condi- tion exists. Check all tie control logic functions to determine the source of the fault. Contact Liebert Global Ser- vices for assistance. Lamp Test This button is pressed to check all indicators on the MIMIC and CONTROL PANEL. -
Page 29: Operating Instructions
PERATING NSTRUCTIONS Refer to Figure 5. Initial System Start-Up All load circuit breakers and tie circuit breakers are initially open. 1. Press the CLOSE LOAD 1 button located on the panel behind the Control door. The Load 1 breaker should close when the button is pressed. 2. -
Page 30: Isolating A Ups System For Maintenance - Combined Loads Operation
4.2.4 Isolating a UPS System for Maintenance - Combined Loads Operation Both Load circuit breakers are initially closed and the Tie circuit breaker initially open. The Tie cir- cuit breaker is closed if the UPS systems are currently in parallel operation. 1. -
Page 31: Returning An Isolated System To Normal Operation - End Combined Loads Operation
4.2.6 Returning an Isolated System to Normal Operation - End Combined Loads Operation One Load circuit breaker and the Tie circuit breaker are closed. The Load circuit breaker of the iso- lated system which was being serviced will be opened. 1. -
Page 32: Abnormal Operations
4.2.9 Abnormal Operations Improper Transfer Transfers can not be performed unless the OK TO TRANSFER LOAD (#) TO SYSTEM (#) light turns on. This makes it difficult to begin an improper transfer. The source feeding the UPS modules does not matter because the UPS inverter output is isolated from the rectifier. -
Page 33: 4.2.11 Continuous Tie-Systems
4.2.11 Continuous Tie-Systems A UPS system that has lost one or more modules can be taken off-line for service. The UPS system with partial capacity can be continuously tied to the other UPS system (also full or partial capacity) and the critical loads of both systems are protected by the single, fully redundant UPS. When service is complete the UPS module(s) can be brought on-line again and the system separated, without plac- ing a critical load on the Bypass source. - Page 34 Maintenance Procedures - Tie Control Logic and Power Components Refer to the procedures in 4.2.3 - Maintenance Procedures - Isolating Each UPS System to iso- late the UPS’s load circuit breaker and the associated downstream feeders for service. By using downstream switchover devices for the individual critical loads, such as ATSs or dual input PDUs, the load feeder components to be maintained are de-energized.
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Page 35: 4.2.12 Isolation For Maintenance
Typically, to assist maintenance personnel, maintenance circuit breaker operation is further guided by an electrical or electromechan- ical interlock system. For detailed instructions for use of the maintenance bypass switchboard, refer to the Operation and Maintenance Manual for your Liebert Series 610 UPS. -
Page 36: Figure 8 Power-Tie System One-Line Diagram
Operating Instructions Figure 8 Power-Tie system one-line diagram... -
Page 37: 4.2.13 Operation Scenarios/Transfer Procedures
4.2.13 Operation Scenarios/Transfer Procedures Refer to the section listed below each figure for the operational procedure to perform the function indicated. Figure 9 From start-up to normal operation, loads to be split between two distribution feeders FROM: Initial Conditions Prior to Startup System 1 Tie Open Load 1 Load 2... -
Page 38: Figure 12 Transfer Both Load Feeders To One Ups
Figure 12 Transfer both load feeders to one UPS FROM: Normal Operation System 1 Tie Open Load 1 Load 2 See 4.2.4 - Isolating a UPS System for Maintenance - Combined Loads Operation. Figure 13 Both feeders on one system to normal operation FROM: Combined Loads Operation System 1... -
Page 39: Figure 15 Normal Split Load Operations To Continuous Tie
Figure 15 Normal split load operations to Continuous Tie FROM: Normal Operation System 1 Tie Open Load 1 Load 2 See 4.2.11 - Tying the UPS Systems - Continuous Parallel Operations. Figure 16 Continuous Tie to normal split load operation FROM: Continuous Tied Systems System 1... -
Page 40: Figure 18 Load On One System To Continuous Tie
Figure 18 Load on one system to Continuous Tie FROM: Combined Loads Operation System 1 Momentary Tie for transfer of Load 2 to System 1 Load 1 Load 2 See 4.2.11 - Tying the UPS Systems - Continuous Parallel Operations. Figure 19 One system in bypass to both feeders combined on remaining operational system FROM: One System in Bypass Mode... -
Page 41: Figure 20 One System In Bypass To Continuous Tie Operation (Option 1)
Figure 20 One system in bypass to Continuous Tie operation (Option 1) FROM: One System in Bypass Mode System 1 Tie Open Load 1 Load 2 Continuous Tied Systems System 1 Load 1 Load 2 Restart the bypassed system, then use the procedures in Tying the UPS Systems - Continuous Parallel Operations (in Section 4.2.11) or see Figure 21. - Page 42 Operating Instructions...
- Page 44 © 2005 Liebert Corporation All rights reserved throughout the world. Specifications subject to change without notice. ® Liebert and the Liebert logo are registered trademarks of Liebert Corporation. All names referred to are trademarks or registered trademarks of their respective owners.