Document Outline

• Contacting Liebert for Support
• Important Safety Instructions
• 1.0 Unpacking and Inspections
  • 1.1 External Inspections
  • 1.2 Unloading and Handling
    • 1.2.1 Handling Considerations
      • Table 1 Shipping weights (typical)
    • 1.2.2 Unit Preparation
  • 1.3 Internal Inspections
• 2.0 Location Considerations
  • 2.1 Recommended Minimum Service Clearances
  • 2.2 Heat Output
    • Table 2 Heat output
  • 2.3 Operating Environment
  • 2.4 Altitude
    • Figure 1 Recommended derating for high altitude operation
    • Figure 2 Maximum ambient temperature for full load operation at higher altitudes
    • Table 3 Altitude conversion—feet to meters
• 3.0 Locating The STS2/PDU
  • 3.1 Anchoring the Unit to the Floor
  • 3.2 Leveling of the 250A Only STS2/PDU Without Anchoring
• 4.0 Power and Control Wiring
  • 4.1 Input and Output Power Connections
    • Figure 3 Typical STS2/PDU, one-line diagram
    • Figure 4 Typical STS2/PDU, one-line diagram, with dual static switch output circuit breakers (not...
    • Figure 5 Typical STS2/PDU, one-line diagram, with inline distribution, dual static switch output ...
    • Figure 6 Typical STS2/PDU, one-line diagram, with I-Line distribution, dual static switch output ...
    • Table 4 Input/output conduit plate specifications
  • 4.2 System Grounding
  • 4.3 Control Wiring Connections
  • 4.4 Remote Source Selection Wiring
    • Table 5 Remote source selection terminal block
  • 4.5 Power Supply
    • Table 6 Terminal block 1 and terminal block 2 wire connections
• 5.0 Output Power Wiring
  • 5.1 Customer Connections
    • Table 7 Distribution configurations
• 6.0 Options
  • 6.1 Programmable Relay Board
    • Table 8 Programmable relay board pinout
  • 6.2 Input Contact Isolator Board
  • 6.3 Comms Board
  • 6.4 Internal Modem
  • 6.5 Network Interface Card (NIC)
  • 6.6 Remote Source Selection
  • 6.7 Key Lockout Switch
  • 6.8 Static Switch Redundant Output Breaker
  • 6.9 Inline Panelboards
  • 6.10 I-Line Panelboards
  • 6.11 Subfeed Breakers
  • 6.12 K-Factor Transformers
  • 6.13 Surge Suppression System
• 7.0 Installation Drawings
  • Figure 7 Outline drawing, 250A STS2/PDU
  • Figure 8 Outline drawing, 250A STS2/PDU with right side I-Line distribution
  • Figure 9 Outline drawing, 250A STS2/PDU with right side inline distribution
  • Figure 10 Outline drawing, 250A STS2/PDU with left side I-Line distribution
  • Figure 11 Outline drawing, 250A STS2/PDU with left side Inline distribution
  • Figure 12 Outline drawing,400-600A STS2/PDU with right side inline distribution
  • Figure 13 Outline drawing, 400-600A STS2/PDU with right side output breaker or I-Line distribution
  • Figure 14 Outline drawing, 400-600A STS2/PDU with left side inline distribution
  • Figure 15 Outline drawing, 400-600A STS2/PDU with left side output breaker or I-Line distribution
  • Figure 16 Outline drawing, 800A STS2/PDU with right side output breaker or I-Line distribution
  • Figure 17 Outline drawing, 800A STS2/PDU with right side inline distribution
  • Figure 18 Outline drawing, 800A STS2/PDU with left side output breaker or I-Line distribution
  • Figure 19 Outline drawing, 800A STS2/PDU with left side inline distribution
  • Figure 20 Outline drawing, 250A STS2/PDU with key lockout switch option
  • Figure 21 Outline drawing, 400-600A STS2/PDU, inline distribution, right side with key lockout sw...
  • Figure 22 Outline drawing, 800A STS2/PDU, inline distribution, right side with key lockout switch...
  • Figure 23 Electrical field connections, 250A STS2/PDU input/output with CB8
  • Figure 24 Electrical field connections, 250A STS2/PDU input with CB3
  • Figure 25 Electrical field connections, 250A STS2/PDU input with CB3 & CB3A
  • Figure 26 Electrical field connections, 400-600A STS2/PDU input with CB3
  • Figure 27 Electrical field connections, 400-600A STS2/PDU input with CB3 and CB3A
  • Figure 28 Electrical field connections, 800A STS2/PDU input with CB3
  • Figure 29 Electrical field connections, 800A STS2/PDU input with CB3 and CB3A
  • Figure 30 Electrical field connections, 250A STS2/PDU output with inline panelboards
  • Figure 31 Electrical field connections, 400-800A STS2/PDU output with inline panelboards
  • Figure 32 Electrical field connections, STS2/PDU output with I-Line panelboard
  • Figure 33 Electrical field connections, 400-600A STS2/PDU with right side output breaker
  • Figure 34 Electrical field connections, 400-600A STS2/PDU with left side output breaker
  • Figure 35 Electrical field connections, 800A STS2/PDU with right side output breaker
  • Figure 36 Electrical field connections, 8600A STS2/PDU with left side output breaker
  • Figure 37 Electrical field connections, 800A STS2/PDU interconnect wiring
  • Figure 38 Electrical field connections, 800A STS2/PDU interconnect wiring, breaker section
  • Figure 39 Electrical field connections, 800A STS2/PDU interconnect wiring, STS section
  • Figure 40 Electrical field connections, 800A STS2/PDU interconnect wiring, left side distribution...
  • Figure 41 Electrical field connections, 800A STS2/PDU interconnect wiring, left side one-line
  • Figure 42 Electrical field connections, 800A STS2/PDU interconnect wiring, left side one line wit...
  • Figure 43 Electrical field connections, 800A STS2/PDU interconnect wiring, right side one line
  • Figure 44 Electrical field connections, 800A STS2/PDU interconnect wiring, right side one line wi...
  • Figure 45 Control wiring, 800A STS2/PDU, left side distribution
  • Figure 46 Control wiring, 800A STS2/PDU, right side distribution
  • Figure 47 Control connection location, 250A STS2/PDU
  • Figure 48 Control connection location, 400-800A STS2/PDU
  • Figure 49 Control location drawing conduit box, top entry, 400-600A STS2/PDU
  • Figure 50 Control wiring for the programmable relay board option
  • Figure 51 Control wiring for the input contact isolator board option
  • Figure 52 Control wiring for comms board
  • Figure 53 Control wiring for the internal modem option
  • Figure 54 Control wiring for the Network Interface Card (NIC) option
  • Figure 55 Control wiring for the RS-232 Port
  • Figure 56 Control wiring for remote source selection option
  • Figure 57 Color LCD touch screen display
  • Table 9 Input circuit breaker schedule, 250-800A
  • Table 10 Output circuit breaker schedule, 250-800A
  • Table 11 Non-automatic breaker schedule, 250-800A
• 8.0 Introduction to STS2/PDU 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 58 STS2/PDU touch screen display
• 9.0 Theory of Operation
  • 9.1 General Description
    • 9.1.1 Static Transfer Switch2 Power Distribution Unit
    • 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 and Non-Automatic 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
  • 10.1 Normal System Turn-On
    • Figure 59 STS2/PDU touch screen display
  • 10.2 Manual Transfer / Preferred Source Selection
    • Figure 60 Source Transfer screen
  • 10.3 Enabling Remote Source Selection
  • 10.4 Maintenance Bypass
    • Figure 61 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 Alarms 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 12 Event messages
• 12.0 Communication Interfaces
  • 12.1 Using the RS-232 Port
    • 12.1.1 Connecting and Using a Terminal
      • Table 13 Terminal commands
    • 12.1.2 Configuring the STS2/PDU via the Terminal
      • Groups Parameter
      • Item Parameter
      • Value Parameter
        • Table 14 Value types
        • Table 15 Group settings and values
    • 12.1.3 Setting Bitpacked Options With the Terminal
      • Table 16 Binary-hexadecimal conversions
      • Putting the Terminal Command Together
    • 12.1.4 Setting Event Masks with the Terminal
• 13.0 Touch Screen Display
  • 13.1 Display Overview
    • Figure 62 STS2/PDU Touch Screen Display
  • 13.2 Menu Overview
    • Figure 63 Menus
    • Figure 64 Keyboard and keypad displays
    • 13.2.1 Security
      • Using the Optional Key Lockout Switch
        • Figure 65 Key lockout switch
      • Using the Password
  • 13.3 Mimic Display
  • 13.4 Event Controls
  • 13.5 Event Display
  • 13.6 Menu Bar
  • 13.7 Configuration Menu
    • System Ratings
    • Event Masks
      • Figure 66 Event Mask dialog box
    • User Settings
      • Figure 67 User settings dialog box
    • Source Setpoints
      • Figure 68 Source setpoints
      • Table 17 Setpoint parameters
    • PDU Setpoints
      • Figure 69 PDU setpoints
      • Table 18 PDU setpoints
    • System Settings
    • Comm Options
      • Figure 70 Comm options dialog box
    • Configuring the Modem
      • Figure 71 Modem dialog box
    • Configuring the Input Contact Isolator Settings
      • Figure 72 Input Contact Isolator dialog box
    • Configuring the Programmable Relay Board Settings
      • Table 19 Standard settings for programmable relays
      • Figure 73 Programmable relay board dialog box
    • Configuring the Network Interface Card
    • SiteScan Configuration
    • Saving Your Communications Configurations
    • System Options
      • Figure 74 System options
    • Dual Output Breaker
    • PDU
      • Figure 75 PDU options button
    • 4 Pole Transfer Switch
    • Shunt Trip
    • Wye Output Transformer
    • Remote Source Select
    • System ID
    • 13.7.1 Logs
      • Event Log
        • Figure 76 Event log
      • History Log
        • Figure 77 History log
    • 13.7.2 Source Transfers
    • 13.7.3 Startup Procedure
    • 13.7.4 Bypass Procedure
    • 13.7.5 Help
    • 13.7.6 Logo
  • 13.8 Cleaning the LCD Touch Screen
• 14.0 Specifications
  • 14.1 System Configuration
    • 14.1.1 Frequency
    • 14.1.2 Input Voltage
      • Table 20 Input voltage
    • 14.1.3 Output Voltage
      • Table 21 Output voltage
    • 14.1.4 System Current Ratings
      • Table 22 System current ratings
    • 14.1.5 Grounding
    • 14.1.6 Electrical Requirements
      • Table 23 Electrical requirements
      • Table 24 Unit short circuit withstand capability
    • 14.1.7 Surge Suppression
    • 14.1.8 Response Time
    • 14.1.9 Environmental Requirements
  • 14.2 System Components
    • 14.2.1 Frame and Enclosure
      • Table 25 Frame sizes
    • 14.2.2 Caster and Leveling - 250A only
    • 14.2.3 Cooling
    • 14.2.4 Access
    • 14.2.5 Circuit Breakers
    • 14.2.6 Cable Entrance
    • 14.2.7 Doors
    • 14.2.8 Color Graphical Display
    • 14.2.9 RS-232 Port
    • 14.2.10 Terminal Port Connections
      • Table 26 MTA plug pinout
      • Table 27 DB9 pinout
    • 14.2.11 RS-232 Interface Parameters
      • Table 28 RS-232 settings
    • 14.2.12 Maintenance Bypass
    • 14.2.13 Fuseless Design
    • 14.2.14 Options
• 15.0 Event Message Help Text
• 16.0 Maintenance
  • 16.1 Proper Tightening of Nuts and Bolts
    • Table 29 Torque tightening
    • Table 30 Branch circuit breakers
  • 16.2 Testing the STS2/PDU
  • 16.3 Changing the Air Filter
• 17.0 Customer Settings
  • 17.1 Programmable Relay Board Settings
    • Table 31 Programmable relay board settings record
  • 17.2 Input Contact Isolator Settings
    • Table 32 Input contact isolator settings record