Liebert NX 20kVA Manuals

Manuals and User Guides for Liebert NX 20kVA. We have 1 Liebert NX 20kVA manual available for free PDF download: Installation Manual

Liebert NX 20kVA Installation Manual

Liebert NX 20kVA Installation Manual (68 pages)

NX series 208V, 60Hz

Brand: Liebert | Category: UPS | Size: 4 MB

Table of Contents

Table of Contents
3
Important Safety Instructions
7
Glossary of Symbols
9
1 Installation

10
- External Inspections
  10
- Internal Inspections
  10
  - Storing for Delayed Installation
    11
- Preliminary Checks
  11
  - Identification
    11
- UPS Location
  11
  - 1.4.1 Environmental Considerations
    11
- Mechanical Considerations
  11
  - System Composition
    12
  - 10-30Kva UPS
    12
  - Positioning the UPS
    12
  - Clearances
    13
  - Floor Installation
    13
  - Cable Entry
    13
  - Optional Cabinets
    14
  - Figure 1 Cabinet Arrangement
    14
2 Electrical

15
- Lectrical Onnections
  15
- Power Cabling
  15
  - Cable Rating
    15
  - E Lectrical C Onnections
    15
  - UPS Input Configuration
    16
  - Cabling Guidelines
    16
  - Figure 2 Single Module Block Diagram (Dual Input Configuration)
    16
  - Cable Connections
    17
  - Figure 3 Input Busbars
    17
  - Figure 4 Battery Fuses and Connections
    17
  - Safety Ground
    18
  - Protective Devices
    18
  - Figure 5 Ground and Neutral Busbar Connections
    18
  - Cabling Procedure
    19
- Control Cables
  20
- Dry Contacts
  21
- Input Dry Contacts at X3
  21
- Output Dry Contact Relays
  22
  - EPO Input-Optional
    23
- UPS Startup
  23
  - Startup Procedure
    23
  - Table 5 EPO Input Contact Relays
    23
- Switching the UPS from Normal to Maintenance Bypass
  25
- Powering down the UPS
  25
3 Battery

26
4 Maintenance

33
5 Options

39
- Dual Bus Synchronizer
  39
- Configuring Parallel System Operation
  40
  - General
    40
  - Conditions for Parallel System
    40
  - Features of Parallel System
    40
  - Operating Principles
    41
  - Operation Modes Summary
    41
  - Figure 19 1+1 System Block Diagram
    41
  - Intermodule Control
    42
- Installing Parallel System
  42
  - Cabinet Installation
    42
  - Preliminary Checks
    42
  - Protective Devices
    42
  - Power Cables
    42
  - Parallel Control Cables
    42
- Commissioning a Parallel System
  43
- Figure 20 Connecting '1+1' System Parallel Control Cables
  43
- Table 6 Key to UPS Control Cable Connections
  43
- Parallel System Startup
  44
  - Emergency Power off (EPO)
    44
- Battery Circuit Breaker Box
  44
- Figure 21 Connecting EPO Push Button
  44
- Table 7 Available Battery Circuit Breaker Boxes
  45
- Figure 22 Battery Circuit Breaker Box Connections
  46
6 Specifications

47
- Conformity and Standards
  47
- UPS Environmental
  47
- UPS Mechanical Characteristics
  47
- Table 8 Environmental Characteristics
  47
- Table 9 Mechanical Characteristics
  47
- UPS Electrical Characteristics
  48
  - Battery Manufacturers and Models
    48
  - Input Rectifier
    48
  - DC Intermediate Circuit
    48
  - Table 10 Approved Batteries
    48
  - Table 11 Rectifier Input Power
    48
  - Table 12 DC Intermediate Circuit
    48
  - Inverter Output
    49
  - Bypass Input
    49
  - Table 13 Inverter Output
    49
  - Table 14 Linear Load Derating
    49
  - Table 15 Bypass Input
    49
7 Installation Drawings

50
8 Specifications and Technical Data

59

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