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Operating Instructions
75
9.2 UPS Start Up
The NX must be fully installed and commissioned before start up, and external power isolators must
be closed. Once those general conditions are met, the UPS may be started.
9.2.1 Start-Up Procedure
To start the UPS from a fully powered-down condition:
1. Open the UPS door to gain access to the main power switches.
2. Turn the rotary switch to TEST.
3. Close CB1.
The bypass contactor (M2) closes automatically and the LCD begins to show start-up screens.
The Rectifier indicator flashes green while the rectifier is starting up. It stops flashing and
becomes solid green about 30 seconds after the rectifier enters the normal operation state.
After initialization, the bypass static switch closes.
Because output switch SW1-A is still open, the UPS
channels power through Maintenance Bypass Supply
line (SW1-D). The bypass indicator extinguishes, pro-
vided that the bypass is normal.
The opening display is shown in the figure at right.
The UPS Mimic display indicators will be:
4. Turn the rotary switch to BYPASS.
The maintenance switch SW1-D opens and output switch SW1-A
closes. The UPS powers from static bypass instead of from
maintenance bypass. The bypass and load indicators turn on.
The design of the rotary switch ensures uninterrupted output.
!
WARNING
During this procedure the output terminals will become live.
If any load equipment is connected to the UPS output terminals, please check with the load
user and ascertain whether it is safe to apply power to the load. If the load is not ready to
receive power, then ensure that it is safely isolated from the UPS output terminals.
!
CAUTION
Do not operate the rotary switch too fast. Always wait at least three seconds when rotating
the switch from one position to another.
Indicator State
Rectifier indicator Off
Battery indicator Off
Bypass indicator Off
Inverter indicator Off
Load indicator Off
Status indicator Off
!
WARNING
Do NOT turn the rotary switch until the rectifier indicator stops flashing green.
F2 F4F1 F3 HELP
Indicator State
Rectifier indicator Green
Battery indicator Off
Bypass indicator Green
Inverter indicator Off
Load indicator Green
Status indicator Amber
- Liebert NX 1
- 2
- TABLE OF CONTENTS 3
- SAVE THESE INSTRUCTIONS 9
- Battery Cabinet Precautions 10
- GLOSSARY OF SYMBOLS 11
- 1.0 INSTALLATION 12
- 1.3 Preliminary Checks 13
- 1.4 UPS Location 13
- 1.6 Mechanical Considerations 14
- 1.6.1 Clearances 15
- 1.6.2 Floor Installation 15
- 1.6.3 Cable Entry 15
- 10-30kVA UPS 15
- System Composition 15
- 1.6.4 Optional Cabinets 16
- 2.0 ELECTRICAL CONNECTIONS 17
- 2.1.2 UPS Input Configuration 18
- 2.1.3 Cabling Guidelines 18
- 2.1.4 Cable Connections 19
- 2.1.5 Safety Ground 20
- 2.1.6 Protective Devices 20
- System Output 20
- 2.1.7 Cabling Procedure 21
- Common Input Connections 21
- Dual Input Connections 21
- 2.2 Control Cables 22
- 2.3 Dry Contacts 23
- 2.3.3 BCB Box Interface 24
- 2.3.4 Output Dry Contacts 25
- 2.3.5 EPO Input—Optional 25
- Firmware Before M200 25
- EPO - NO 26
- EPO - NC 26
- 3.0 BATTERY INSTALLATION 27
- Battery Installation 30
- 3.5 Non-Standard Batteries 32
- 4.1 Bypass Switch 33
- 4.2 Normal (UPS) Mode 33
- 4.3 Bypass Mode 34
- 4.4 Maintenance Mode 34
- 4.5 Locating the Cabinet 34
- 4.6 Cable Installation 34
- 4.6.3 Input/Output Wiring 35
- Maintenance Bypass Cabinet 36
- Terminal 36
- Location 36
- 4.7 Bolting Cabinets Together 37
- 5.0 OPTION INSTALLATIONS 38
- 5.2.1 General 39
- Option Installations 40
- 5.3.5 Power Cables 42
- 5.3.6 Parallel Control Cables 42
- Auxiliary Dry Contact Cables 42
- Input Distribution 43
- DPN U3813078 Rev. N 45
- Midpoint Busbar Detail 45
- Front View 45
- Bottom View 45
- 5.10.1 Configuring Baud Rates 48
- Figure 28 OC Web card display 49
- 3. UPS Battery is LOW 50
- 4. UPS fault has occurred 50
- 6.0 INSTALLATION DRAWINGS 52
- (with door open) 53
- TOP LAYER MIDDLE LAYER 56
- BOTTOM LAYER 56
- 1+1 Parallel Cabinet 59
- 1 + N Parallel Cabinet 61
- 7.0 OPERATION 66
- Operation 67
- 8.1 Operator Control Panel 68
- 8.2 Mimic Display Indicators 69
- 8.3 Control Buttons 70
- 8.4 Alarm Buzzer 70
- 8.5 LCD Overview 71
- 8.6 Navigation Keys 72
- 8.7 UPS System Information 72
- 8.8 LCD Menus and Data Items 73
- 8.9 Language Selection 74
- 8.10 Current Date and Time 74
- 8.11 UPS Status Messages 77
- 8.12 Types of LCD Screens 78
- 8.12.3 UPS Help Screen 79
- 8.12.4 Screen Saver Window 79
- 8.13 Pop-Up Windows 80
- 9.0 OPERATING INSTRUCTIONS 81
- 9.1.1 Power Switches 82
- 9.2 UPS Start Up 83
- 9.4 Powering Down the UPS 85
- Operating Instructions 86
- 9.7 Auto Restart 87
- 9.9 Battery Protection 88
- 9.15.2 Shutting Down the UPS 91
- 9.16 Parallel System Start Up 93
- 9.17 Replacing Dust Filters 93
- 10.0 UPS SPECIFICATIONS 94
- Table 27 UPS terminal 95
- 10.4.2 Input Rectifier 96
- 10.4.4 Inverter Output 97
- 10.4.5 Bypass Input 97
- 30 208 315 400 208 250 400 101
- PPENDIX A-UPS STATUS MESSAGES 105
- Refer to 108
- UPS Status Messages 110
- SL-25212_REV01_06-07 112
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