Liebert 610 3.3.9 Maintenance Bypass

Operation

67

3.3.9 Maintenance Bypass

Maintenance Bypass switchgear allows you to totally isolate the UPS from all power sources, while

you maintain power to the critical load.

Your installation may have a two-breaker or three-breaker maintenance bypass or none at all. The

main difference between a two-breaker and three-breaker maintenance bypass is the location of the

Bypass Input Breaker (BIB).

Another option that may be present at your site is an alternate power source (generator) and an auto-

matic transfer switch (ATS).

Note that to totally isolate the UPS system from all power sources, the Main Input switchgear and

battery circuit breakers must also be opened.

Figure 50 Load on maintenance bypass (two breakers)

!CAUTION

Instructions for operating the Maintenance Bypass circuit breakers are on the Maintenance

Bypass cabinet. Make sure you understand the proper sequence before operating any circuit

breaker. Operating a Maintenance Bypass circuit breaker out of sequence could cut off power

to the critical load.

Critical

Load

AC Output

RIB

MBD

MBFB

BIB

OUTPUT

CB

Controls

Battery

Bypass CB

INPUT

CB

Static

Bypass

Switch

Static

Switch

Disconnects

TWO BREAKER MAINTENANCE BYPASS SWITCHBOARD

CONTROL POWER

UPS MODULE

MAIN INPUT

SWITCHGEAR

Rectifier/

Charger Inverter

MBB

MIB

Contents

Main SERIES 610 UPS BATTERY CABINET PRECAUTIONS CONTACTING LIEBERT FOR SUPPORT !WARNI NG TABLE OF CONTENTS Page FIGURES TABL ES IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS 1.0 I 1.1 System Description 1.2 Reliability Designed for Success Other Factors to Consider 1.3 Safety Precautions 1.4 Modes of Operation 1.4.1 NormalLoad on UPS 1.4.2 Input Power Failure 1.4.3 Recharge 1.4.4 Overload 1.5 Operator Controls 1.6 Options Page 2.0 THEORY OF OPERATION 2.1 General Component Descriptions UPS Module Battery Plant 2.2 Detailed Component Descriptions 2.2.1 Controls Hardware Software 2.2.2 Rectifier/Charger Operation Input Circuit Breaker Isolation Transformer Input Current Limit 2.2.3 Battery Charging Circuit Operation After Discharge Operation After End-of-Discharge Battery Disconnect Battery Charge Current Limiting 2.2.4 Inverter Operation Output Regulation and Overload Performance Non-Linear Load Characteristics Unbalanced Load Characteristics 2.2.5 Static Bypass Bypass Circuit Breaker Pulsed Parallel Operation Load Transfers Fuse Protection Transfer and Retransfer Conditions Theory of Operation 16 Figure 2 Typical UPS system one-line diagram with optional maintenance bypass CONTROL POWER THREE BREAKER MAINTENANCE BYPASS SWITCHBOARD UPS MODULE MAIN INPUT SWITCHGEAR 3.0 O 3.1 Display Screen and Operator Controls Features Figure 3 Operator controls, typical system Refer also to Figure 2 for a typical system one-line diagram. Figure 4 Series 610 UPS operator control panel 3.2 Menu Tree Navigation 3.2.1 Master Menu Screen Page 3.2.2 Monitor/Mimic Display Screen Input Metering Displays Output Metering Displays Status/Alarm Message Areas Figure 8 Monitor/Mimic display example: Normal power flow Figure 9 Monitor/Mimic display example: Utility fail Figure 10 Monitor/Mimic display example: Load on bypass, UPS module on and charging battery Figure 11 Monitor/Mimic display example: Load on bypass, UPS module off 3.2.3 Walk-In Display Screen Figure 12 Walk-in display screen 3.2.4 Status Reports Screens Figure 13 Status reports screen Present Status Figure 14 Present status report screens Figure 15 Event history report screen Event History History Status Figure 16 History status report screen System Status Figure 17 Battery cycle monitor screen Figure 18 Battery cycle monitoring summary screen Figure 19 Typical data on discharge cycles of 91 to 240 seconds duration during the recording period 3.2.5 System Configuration Screens Figure 20 System configuration screens Maximum Auto-Retransfer Attempts Figure 21 Maximum auto-retransfer attempts screen Date Figure 22 Date screen Time Figure 23 Time screen Auto Dial Figure 24 Auto dial screen Language Selection System Options Figure 25 System options screen Figure 26 Battery test screen Figure 27 Battery test results screen Figure 28 Monitor/Mimic display example: Continuous Duty Static Switch Remote Monitor Table 1 Alarm messages Table 2 Additional alarm messages 3.2.6 Alarm Limit Settings Screen Figure 29 Alarm limit settings screen Overload Alarm DC Overvoltage Battery Discharging Battery Shutdown (60 Minutes) Battery Rating (100%) Battery Rating Temperature Limit Setting (Optional) 3.2.7 Load Transfer Procedures Screen Figure 30 Load transfer procedure screen 3.2.8 Start-Up Procedures Screen Figure 31 Start-up procedures screen Figure 32 Start-up procedures screen, continued 3.2.9 Shutdown Procedures Screen Figure 33 Shutdown procedures screen Figure 34 Shutdown procedures screen, continued 3.2.10 Battery Time Screen Figure 35 Battery time screen (15-minute discharge) Figure 36 Battery time screen (45-minute discharge) Figure 37 Accuracy range of values for calculated battery times 3.2.11 Meter Calibration Screen Figure 38 Meter calibration screen 3.2.12 Battery Equalize Screen Figure 39 Battery equalize screen 3.2.13 Alarm and Status Messages Status Messages Figure 40 Alarm and status message screen Alarm Messages Table 3 Abbreviations used in alarm messages Table 4 Alarm messages and corrective actions Page Table 4 Alarm messages and corrective actions, continued Table 5 Alarm messagessummary 3.2.14 Communication Interfaces Worldwide Reporting Local Reporting to a Terminal Local Reporting to a Monitor Site Reporting: SiteScan or SNMP Remote Monitor Panel Separate / Simultaneous Outputs Table 6 Series 610 terminal commands 3.3 Modes of Operation 3.3.1 Load on Bypass Figure 41 Load on bypass (UPS not available) Table 7 Circuit breaker abbreviations Abbreviation Circuit Breaker 3.3.2 OK to Transfer Figure 42 Load on bypass (UPS available) Figure 43 Load on UPS (bypass available) THREE BREAKER MAINTENANCE BYPASS SWITCHBOARD CONTROL POWER UPS MODULE MAIN INPUT SWITCHGEAR 3.3.3 Momentary Overloads Figure 44 Momentary overload (through pulse-parallel static switch) 3.3.4 Input Power FailureLoad on Battery Figure 45 Input power failload on battery 3.3.5 Off Battery CONTROL POWER Figure 46 Load on UPSbattery not available THREE BREAKER MAINTENANCE BYPASS SWITCHBOARD UPS MODULE 3.3.6 Emergency Module Off CONTROL POWER Figure 47 Emergency modules off THREE BREAKER MAINTENANCE BYPASS SWITCHBOARD UPS MODULE 3.3.7 Remote Emergency Power Off Figure 48 Emergency power off 3.3.8 Module Shutdown Figure 49 Module shutdown 3.3.9 Maintenance Bypass Figure 50 Load on maintenance bypass (two breakers) Figure 51 Load on maintenance bypass (three breakers) 3.4 Manual Procedures 3.4.1 Start-Up Procedure STEP 1 (Start-Up Procedure) STEP 2 (Start-Up Procedure) STEP 3 (Start-Up Procedure) STEP 4 (Start-Up Procedure) Figure 52 Start-up procedures screen Figure 53 Start-up procedures, continued STEP 5 (Start-Up Procedure) 3.4.2 Load Transfer Procedures STEP 1 (Load Transfer Procedures) Figure 54 Load transfer procedures screen STEP 2 (Load Transfer Procedures) 3.4.3 Maintenance Bypass Load Transfers STEP 1 (Maintenance Bypass Load Transfers - If the Load is on the UPS Bypass) STEP 2 (Maintenance Bypass Load Transfers - If the Load is on Maintenance Bypass) 3.4.4 Shutdown Procedures Module Shutdown Procedure STEP 1 (Shutdown Procedures) Figure 55 Shutdown procedures screen Figure 56 Shutdown procedures screen, continued STEP 2 (Shutdown Procedures) STEP 3 (Shutdown Procedures) STEP 4 (Shutdown Procedures) STEP 5 (Shutdown Procedures) STEP 6 (Shutdown Procedures) Local Emergency Modules Off (LEMO) 3.4.5 Battery Exercise Procedures Figure 57 Battery exercise control screen (above) and results (below) 3.5 Automatic Operations 3.5.1 Overloads (Without Transfer) Figure 58 Current-versus-time curves of overload capacity 3.5.2 Automatic Transfers to Bypass (Overload Condition) 3.5.3 Automatic Retransfers to UPS 3.5.4 Automatic Transfers to Bypass (UPS System Faults) 3.5.5 Automatic Restart (Optional) Enabling Automatic Restart Sequence of Operation 4.0 M 4.1 Safety Precautions 4.2 Liebert Global Services Professional Start-Up Maintenance Agreements: The Signature Program Training Warranties 4.3 Routine Maintenance 4.3.1 Record Log 4.3.2 Air Filters 4.3.3 Limited Life Components 4.4 Battery Maintenance 4.4.1 Battery Safety Precautions !AVERTISSEMENT !ATTENTION Matching Battery Cabinets (Optional) Rack-Mounted Batteries Table 8 Battery retorque values Table 9 Battery voltage record 4.4.2 Torque Requirements 4.5 Detection of Trouble Table 10 Torque specifications (unless otherwise labeled) 4.6 Reporting a Problem 4.7 Corrective Actions 4.8 Recommended Test Equipment 4.9 Upstream Feeder Circuit Breaker Setting Inspections Table 11 Recommended test equipment and tools 5.0 S 5.1 Rating Figure 59 Output power envelope for 0.8 and 0.9 pf rated units 5.2 Environmental Conditions Table 12 Specifications applicable to environment 5.3 Adjustments 5.4 Battery Operation 5.5 Electrical Specifications Page The Company Behind the Products Technical Support/Service Locations AC POWER SYSTEMS SERIES 610 UPS OPERATION & MAINTENANCE MANUAL