Document Outline

• Important Safety Instructions
• Overview of Manual
• 1.0 Safety Precautions
• 2.0 Unpacking and Inspections
  • 2.1 External Inspections
  • 2.2 Unloading and Handling
    • 2.2.1 Handling Considerations
    • 2.2.2 Unit Preparation
  • 2.3 Internal Inspections
• 3.0 Location Considerations
  • 3.1 Recommended Minimum Service Clearances
  • 3.2 Heat Output
    • Table 1 Heat output
  • 3.3 Operating Environment
  • 3.4 Altitude
    • Figure 1 Recommended derating for high altitude operation
    • Figure 2 Maximum ambient temperature for full load operation at higher altitudes
• 4.0 Locating the Liebert STS2
  • 4.1 Leveling and Anchoring the Unit to the Floor
  • 4.2 Leveling of the Static Switch Without Anchoring
  • 4.3 Leveling and Anchoring the Static Switch Using Floor Stand
• 5.0 Power and Control Wiring
  • 5.1 Input And Output Power Connections
    • Figure 3 Typical static transfer switch one-line diagram
    • Table 2 Input/output conduit plate specifications
  • 5.2 Input Junction Box Installation—Optional
    • Table 3 Input junction box dimensions
    • Table 4 Input junction box terminal wire size range
  • 5.3 System Grounding
    • Figure 4 Typical one-line diagram of two PDUs and a static transfer switch
  • 5.4 Control Wiring Connections
  • 5.5 Remote Source Selection Wiring
    • Table 5 Remote source selection terminal block
  • 5.6 Power Supply
    • Table 6 Terminal block 1 and terminal block 2 wire connections
• 6.0 Options
  • 6.1 Programmable Relay Board
    • Table 7 Programmable relay board pinout
  • 6.2 Optimized Transfer
  • 6.3 Distribution Cabinet With I-Line Panelboard—100-600A Units Only
  • 6.4 Input Contact Isolator Board
  • 6.5 Comms Board
  • 6.6 Liebert IntelliSlot® Web/485 Card With Adapter
  • 6.7 LED Display
  • 6.8 Remote Source Selection
  • 6.9 Key Lockout Switch
  • 6.10 Redundant Output Breaker
  • 6.11 Input Junction Boxes and Cables
  • 6.12 Seismic Floor Anchors
  • 6.13 Seismic Floor Stand
• 7.0 Installation Drawings
  • Figure 5 Outline drawing: 100 – 250 amp Liebert STS2
  • Figure 6 Outline drawing: 400 – 600 amp Liebert STS2
  • Figure 7 Outline drawing: 800 – 1000 amp Liebert STS2
  • Figure 8 Outline drawing: 100 – 250amp Liebert STS2 with a key lockout switch option
  • Figure 9 Outline drawing: 400 – 600 amp Liebert STS2 with a key lockout switch option
  • Figure 10 Outline drawing: 800 – 1000 amp Liebert STS2 with the key lockout switch option
  • Figure 11 Seismic anchor drawing: 100 – 250 amp Liebert STS2
  • Figure 12 Seismic anchor drawing: 400 – 600 amp Liebert STS2
  • Figure 13 Seismic anchor drawing: 800 – 1000 amp Liebert STS2
  • Figure 14 Electrical field connections drawing: 100 – 250 amp Liebert STS2 with single output breaker
  • Figure 15 Electrical field connections drawing: 100 – 250 amp Liebert STS2 with dual output breakers
  • Figure 16 Electrical field connections drawing: 400 – 600 amp Liebert STS2 with single output breaker
  • Figure 17 Electrical field connections drawing: 400 – 600 amp Liebert STS2 with dual output breakers
  • Figure 18 Electrical field connections drawing: 800 – 1000 amp Liebert STS2 with single output breaker
  • Figure 19 Electrical field connections: 800 – 1000 amp Liebert STS2 with dual output breakers
  • Figure 20 Liebert STS2 non-automatic circuit breaker schedule
  • Figure 21 Control connection location diagram: 100 – 600 amp Liebert STS2
  • Figure 22 Control connection location diagram: 800 – 1000 amp Liebert STS2
  • Figure 23 Control wiring for remote source selection option
  • Figure 24 Control wiring for the programmable relay board option
  • Figure 25 Control wiring for the input contact isolator board option
  • Figure 26 Control wiring for comms board
  • Figure 27 Control wiring for the Liebert IntelliSlot Web/485 Card with Adapater
  • Figure 28 Control wiring for the RS-232 port
  • Figure 29 Outline drawing for input junction box
  • Figure 30 Color LCD touch screen display
  • Figure 31 LED display
  • Figure 32 Installation drawing, seismic floor stand 100-250A
  • Figure 33 Installation drawing, seismic floor stand 100-250A
  • Figure 34 Installation drawing, seismic floor stand 100-250A
  • Figure 35 Installation drawing, seismic floor stand 100-250A
  • Figure 36 Installation drawing, seismic floor stand 400-600A
  • Figure 37 Installation drawing, seismic floor stand 400-600A
  • Figure 38 Installation drawing, seismic floor stand 400-600A
  • Figure 39 Installation drawing, seismic floor stand 400-600A
  • Figure 40 Installation drawing, seismic floor stand 800-1000A
  • Figure 41 Installation drawing, seismic floor stand 800-1000A
  • Figure 42 Installation drawing, seismic floor stand 800-1000A
  • Figure 43 Installation drawing, seismic floor stand 800-1000A
• 8.0 Introduction to Liebert STS2 Operations
  • 8.1 System Description
    • 8.1.1 Redundancy
    • 8.1.2 Reliability and Agency Requirements
    • 8.1.3 Factory Backup and Service Assistance
  • 8.2 Modes of Operation
    • 8.2.1 Normal (Preferred Source)
    • 8.2.2 Transfer
    • 8.2.3 Transfer Inhibit
    • 8.2.4 Bypass
  • 8.3 Operator Controls
    • Figure 44 Liebert STS2 touch screen display
• 9.0 Theory of Operation
  • 9.1 General Description
    • 9.1.1 Liebert STS2 Static Transfer Switch
    • 9.1.2 Source Transfer
    • 9.1.3 Automatic Transfer/Retransfer
      • Automatic Retransfer Inhibited
    • 9.1.4 Emergency Transfer
    • 9.1.5 Load Current Transfer Inhibit
    • 9.1.6 SCR Failure
    • 9.1.7 On/Off Sequence
  • 9.2 Detailed Component Description
    • 9.2.1 Controls
      • Operator Interface
      • Hardware
      • Firmware
    • 9.2.2 Circuit Breakers
    • 9.2.3 SCRs
    • 9.2.4 Logic Modules
    • 9.2.5 Audible Alarm
    • 9.2.6 RS-232 Port
• 10.0 Operating Instructions for the Touch Screen Interface
  • 10.1 Normal System Turn-On
    • Figure 45 Liebert STS2 touch screen display
  • 10.2 Manual Transfer / Preferred Source Selection
    • Figure 46 Source transfer screen
  • 10.3 Enabling Remote Source Selection
  • 10.4 Maintenance Bypass
    • Figure 47 Gate board viewing slot locations
    • 10.4.1 Bypass Procedures for Source 1
    • 10.4.2 Bypass Procedures for Source 2
  • 10.5 Normal System Shutdown
    • 10.5.1 Shutdown in Static Transfer Switch Mode
    • 10.5.2 Shutdown in Maintenance Bypass Mode
• 11.0 Alarm and Faults
  • 11.1 Event Mask
  • 11.2 Event and History Logs
    • 11.2.1 Event Log
    • 11.2.2 History Log
  • 11.3 Alarm Notes
  • 11.4 List of Messages
    • Table 8 Event messages
• 12.0 Communication Interfaces
  • 12.1 Using the RS-232 Port
    • 12.1.1 Connecting and Using a Terminal
      • Table 9 Terminal commands
    • 12.1.2 Configuring the Liebert STS2 via the Terminal
      • Groups Parameter
      • Item Parameter
      • Value Parameter
        • Table 10 Value types
        • Table 11 Group settings and values
    • 12.1.3 Setting Bitpacked Options with the Terminal
      • Table 12 Binary-hexadecimal conversions
      • Putting the Terminal Command Together
    • 12.1.4 Setting Event Masks with the Terminal
      • Examples of Event Mask Settings
• 13.0 Liebert STS2 Touch Screen Display
  • 13.1 Display Overview
    • Figure 48 Liebert STS2 touch screen display
  • 13.2 Menu Overview
    • Figure 49 Menus
    • Figure 50 Keyboard and keypad displays
    • 13.2.1 Security
      • Using the Optional Key Lockout Switch
        • Figure 51 Key lockout switch.
      • Using the Password
  • 13.3 Mimic Display
  • 13.4 Event Controls
  • 13.5 Event Display
  • 13.6 Menu bar
    • 13.6.1 Configuration Menu
      • System Ratings
      • Event Masks
        • Figure 52 Event mask dialog box
      • User Settings
        • Figure 53 User settings dialog box
      • Source Set Points
        • Figure 54 Source setpoints
        • Table 13 Sepoint parameters
      • System Settings
      • Comm Options
        • Figure 55 Comm options dialog box
      • Configuring the Modem
        • Figure 56 Modem dialog box
      • Configuring Pager Support
      • Configuring the Input Contact Isolator Settings
        • Figure 57 Input contact isolator dialog box
      • Configuring the Programmable Relay Board Settings
        • Table 14 Standard settings for programmable relays
        • Figure 58 Programmable relay board dialog box
      • Configuring the Liebert IntelliSlot Web/485 Card With Adapter
      • Liebert SiteScan Configuration
      • Saving Your Communications Configurations
      • System Options
        • Figure 59 System options
      • Dual Output Breaker
      • PDU
      • 4-Pole Transfer Switch
      • Shunt
      • Wye Output Transformer
      • Remote Source Selection
      • System ID
    • 13.6.2 Logs
      • Event Log
        • Figure 60 Event log
      • History Log
        • Figure 61 History log
    • 13.6.3 Source Transfers
    • 13.6.4 Startup Procedure
    • 13.6.5 Bypass Procedure
    • 13.6.6 Help
    • 13.6.7 Logo
  • 13.7 Cleaning the LCD Touch Screen
• 14.0 Operating the Liebert STS2 LED Display
  • 14.1 LEDs and Buttons and Key Lockout Switch
    • 14.1.1 Front Panel Controls
      • Figure 62 LED display
    • 14.1.2 LED and Push Button Description
      • Table 15 LED and push button description
    • 14.1.3 Event Controls
    • 14.1.4 Key Lockout Switch
      • Figure 63 Key lockout switch.
  • 14.2 Operations
    • 14.2.1 Normal System Turn On
    • 14.2.2 Manual Transfer / Preferred Source Selection
    • 14.2.3 Maintenance Bypass
      • Bypass Procedures for Source 1
      • Bypass Procedures for Source 2
    • 14.2.4 Normal System Shutdown
      • Shutdown in Static Transfer Switch Mode
      • Shutdown in Maintenance Bypass Mode
• 15.0 Specifications
  • 15.1 System Configuration
    • 15.1.1 Frequency
    • 15.1.2 Input/Output Voltage
      • Table 16 Input/output voltage
    • 15.1.3 System Current Ratings
      • Table 17 System current ratings
    • 15.1.4 Grounding
    • 15.1.5 Electrical Requirements
      • Table 18 Electrical requirements
      • Table 19 Unit short circuit withstand capability
    • 15.1.6 Input Surge Suppression
    • 15.1.7 Response Time
    • 15.1.8 Environmental Requirements
  • 15.2 System Components
    • 15.2.1 Frame and Enclosure
      • Table 20 Frame sizes
    • 15.2.2 Casters, Leveling and Seismic Anchoring
    • 15.2.3 Cooling
    • 15.2.4 Access
    • 15.2.5 Circuit Breakers
    • 15.2.6 Cable Entrance
    • 15.2.7 Doors
    • 15.2.8 Color Graphical Display or LED Display
    • 15.2.9 RS-232 Port
    • 15.2.10 Terminal Port Connections
      • Table 21 MTA plug pinout
      • Table 22 DB9 pinout
    • 15.2.11 RS-232 Interface Parameters
      • Table 23 RS-232 settings
    • 15.2.12 Maintenance Bypass
    • 15.2.13 Fuseless Design
    • 15.2.14 Options
• 16.0 Event Message Help Text
• 17.0 Maintenance
  • 17.1 Proper Tightening of Nuts and Bolts
    • Table 24 Torque tightening
  • 17.2 Testing the Liebert STS2
  • 17.3 Changing the Air Filter
• Support Information
• Programmable Relay Board Settings Record
• Input Contact Isolator Settings Record