Liebert Static Transfer Switch
AC Power
For Business-Critical Continuity
Page
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS OVERVIEW OF MANUAL
1.0 SAFETY PRECAUTIONS 2.0 UNPACKING AND INSPECTIONS
7.0 INSTALLATION DRAWINGS 8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
11.0 ALARM AND FAULTS
9.0 THEORY OF OPERATION
15.0 SPECIFICATIONS
12.0 COMMUNICATION INTERFACES
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
INPUT CONTACT ISOLATOR SETTINGS RECORD
16.0 EVENT MESSAGE HELP TEXT 17.0 MAINTENANCE
SUPPORT INFORMATION PROGRAMMABLE RELAY BOARD SETTINGS RECORD
17.2 Testing the Liebert STS2 17.3 Changing the Air Filter
FIGURES
TABLES
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
OVERVIEW OF MANUAL
1.0 SAFETY PRECAUTIONS
Read this entire manual before installing and operating the unit
2.1 External Inspections
2.2 Unloading and Handling
2.0 UNPACKING AND INSPECTIONS
2.3 Internal Inspections
2.2.1 Handling Considerations
2.2.2 Unit Preparation
3.3 Operating Environment
3.1 Recommended Minimum Service Clearances
3.2 Heat Output
3.0 LOCATION CONSIDERATIONS
3.4 Altitude
Figure 1 Recommended derating for high altitude operation
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
4.0 LOCATING THE LIEBERT STS2
5.1 Input And Output Power Connections
5.0 POWER AND CONTROL WIRING
5.2 Input Junction Box Installation-Optional
Figure 3 Typical static transfer switch one-line diagram
Input/output conduit plate specifications
Power and Control Wiring
Input junction box dimensions
Input junction box terminal wire size range
#6 to #2/0 AWG
5.4 Control Wiring Connections
5.3 System Grounding
5.5 Remote Source Selection Wiring
5.6 Power Supply
Remote source selection terminal block
6.0 OPTIONS
6.1 Programmable Relay Board
6.2 Optimized Transfer
Programmable relay board pinout
6.5 Comms Board
6.3 Distribution Cabinet With I-Line Panelboard-100-600A Units Only
6.4 Input Contact Isolator Board
6.6 Liebert IntelliSlot Web/485 Card With Adapter
6.8 Remote Source Selection
6.9 Key Lockout Switch
6.7 LED Display
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
Installation Drawings
Figure 6 Outline drawing 400 - 600 amp Liebert STS2
PS211400
Installation Drawings
Figure 7 Outline drawing 800 - 1000 amp Liebert STS2
PS211800
PS211101 Rev
Installation Drawings
PS211401
Installation Drawings
PS211801
FRONT
Installation Drawings
Figure 11 Seismic anchor
SYSTEM SEISMIC ANCHORING, FIGURE
SYSTEM SEISMIC ANCHORING, FIGURE
Installation Drawings
FRONT
Figure 12 Seismic anchor drawing 400 - 600 amp Liebert STS2
FRONT
Installation Drawings
Figure 13 Seismic anchor drawing 800 - 1000 amp Liebert STS2
SYSTEM SEISMIC ANCHORING, FIGURE
FRONT VIEW
ONE-LINE DIAGRAM
Installation Drawings
Figure 14 Electrical field connections
Installation Drawings
PS212101
FRONT VIEW
ONE-LINE DIAGRAM SECTION A-A
Installation Drawings
drawing 400 - 600 amp Liebert STS2 with single output breaker
Installation Drawings
PS212401
breaker
Drawings
Installation Drawings
PS212801
Installation Drawings
Figure 20 Liebert STS2 non-automatic circuit breaker schedule
PS213000 Rev
CONTROL WIRING
Installation Drawings
FRONT VIEW WITH FRONT DOOR REMOVED
PS213800
CONTROL WIRING
Installation Drawings
FRONT VIEW WITH FRONT DOOR REMOVED
See Note
Page
“NO CUSTOMER CONNECTION”
Figure 25 Control wiring for the input contact isolator board option
Installation Drawings
J51 INPUT CONTACT ISOLATOR BOARD 02-810012-XXPS213002
Figure 26 Control wiring for comms board
COMMS BOARD
PS213003
TB3 TB3
TB2 DB-9J3
PS213006 Rev
1. RS-232 communication through DB9 connector
Front View
DB9 Connector Detail A
3-Phase, 3-Wire Plus Ground
Power Terminal Block
Customer Connection of Input Power Racewayby others
Location of Factory-Supplied Input Power Cable Assembly
RESET
ALARM
Installation Drawings
MIMIC
Installation Drawings
Figure 31 LED display
PS211002 Rev
Figure 32 Installation drawing, seismic floor stand 100-250A
Installation Drawings
PS215000 REV. NO
Installation Drawings
PS215001 Rev
stand
FRONT LEFT ISOMETRIC VIEW
Figure 34 Installation drawing, seismic floor stand 100-250A
Installation Drawings
RIGHT SIDE VIEW
Figure 35 Installation drawing, seismic floor stand 100-250A
Installation Drawings
PS215003 Rev
PS216000 Rev.0
HARDWARE TORQUE CHART
Installation
HEIGHT TABLE
Figure 37 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216001 Rev
Figure 38 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216002 Rev
Figure 39 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216003 Rev
Figure 40 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
PS217000 Rev
Installation Drawings
PS217001 Rev
drawing
Figure 42 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
PS217002 Rev
Figure 43 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
PS217003 Rev
8.1 System Description
8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
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
8.3 Operator Controls
8.2.4 Bypass
Figure 44 Liebert STS2 touch screen display
9.0 THEORY OF OPERATION
9.1.1 Liebert STS2 Static Transfer Switch
9.1 General Description
9.1.2 Source Transfer
9.1.5 Load Current Transfer Inhibit
9.2 Detailed Component Description
9.1.4 Emergency Transfer
9.1.6 SCR Failure
9.2.2 Circuit Breakers
Hardware
Firmware
9.2.3 SCRs
9.2.5 Audible Alarm
9.2.4 Logic Modules
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
Settings on page
10.2 Manual Transfer / Preferred Source Selection
Figure 46 Source transfer screen
10.4 Maintenance Bypass
10.3 Enabling Remote Source Selection
To manually select the preferred source
Figure 47 Gate board viewing slot locations
10.4.1 Bypass Procedures for Source
To bypass the switch for Source
To return to the normal mode
10.5.2 Shutdown in Maintenance Bypass Mode
10.4.2 Bypass Procedures for Source
10.5.1 Shutdown in Static Transfer Switch Mode
10.5 Normal System Shutdown
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
Event messages
Alarm and Faults
Alarm Message
Description/Cause
Alarm and Faults
Event messages continued
12.1 Using the RS-232 Port
12.0 COMMUNICATION INTERFACES
12.1.1 Connecting and Using a Terminal
Terminal commands
Groups Parameter
12.1.2 Configuring the Liebert STS2 via the Terminal
Terminal commands
Item Parameter
Table 11 Group settings and values
Value Parameter
Table 10 Value types
Table 11 Group settings and values continued
Communication Interfaces
Comms Options
12.1.3 Setting Bitpacked Options with the Terminal
Options1
Comms Options
Critical Option Enabling
Non-Critical Option Enabling
Table 12 Binary-hexadecimal conversions
SPT 2
Putting the Terminal Command Together
12.1.4 Setting Event Masks with the Terminal
NO spaces are placed between each mask listed above
Examples of Event Mask Settings
13.1 Display Overview
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
Figure 48 Liebert STS2 touch screen display
Click OK to save the data that you have entered
13.2 Menu Overview
Figure 49 Menus
Figure 50 Keyboard and keypad displays
Figure 51 Key lockout switch
Using the Optional Key Lockout Switch
Using the Password
To set or reset the password
13.4 Event Controls
13.6.1 Configuration Menu
13.3 Mimic Display
13.5 Event Display
To set the event masks
User Settings
To access the User Settings dialog box
Figure 52 Event mask dialog box
Figure 53 User settings dialog box
Source Set Points
To configure the setpoints for each source
Figure 54 Source setpoints
Table 13 Sepoint parameters
8. Select FREQUENCY TRIP POINT. A keypad is displayed
Comm Options
System Settings
To access the System Settings menu
Comm Options System Options System ID
Configuring the Modem
To configure the modem
Figure 56 Modem dialog box
Configuring Pager Support
Configuring the Input Contact Isolator Settings
To configure the Input Contact Isolator relays
Figure 57 Input contact isolator dialog box
Configuring the Programmable Relay Board Settings
Table 14 Standard settings for programmable relays
To configure your programmable relay boards for user defined settings
Configuring the Liebert IntelliSlot Web/485 Card With Adapter
Figure 58 Programmable relay board dialog box
To save you communications configuration settings
Liebert SiteScan Configuration
Saving Your Communications Configurations
System Options
Shunt
4-Pole Transfer Switch
If the Liebert STS2 is connected to a PDU configured as a Wye
Wye Output Transformer
History Log
13.6.2 Logs
Event Log
Figure 60 Event log
13.6.5 Bypass Procedure
13.7 Cleaning the LCD Touch Screen
13.6.4 Startup Procedure
13.6.3 Source Transfers
14.0 OPERATING THE LIEBERT STS2 LED DISPLAY
14.1 LEDs and Buttons and Key Lockout Switch
PS211002 Rev
14.1.1 Front Panel Controls
14.1.2 LED and Push Button Description
Table 15 LED and push button description
Operating the Liebert STS2 LED Display
14.2 Operations
14.1.4 Key Lockout Switch
Figure 63 Key lockout switch
14.1.3 Event Controls
14.2.2 Manual Transfer / Preferred Source Selection
To manually select the preferred source
If transfer to Source 2 is not desired
14.2.3 Maintenance Bypass
Bypass Procedures for Source
To return to the normal mode
Bypass Procedures for Source
If transfer to Source 1 is not desired
To return to normal mode
When the Static Transfer Switch is operating on bypass
Shutdown in Static Transfer Switch Mode
Shutdown in Maintenance Bypass Mode
14.2.4 Normal System Shutdown
15.1.1 Frequency
15.1 System Configuration
15.0 SPECIFICATIONS
15.1.2 Input/Output Voltage
15.1.6 Input Surge Suppression
15.1.4 Grounding
15.1.5 Electrical Requirements
15.1.7 Response Time
15.2.2 Casters, Leveling and Seismic Anchoring
15.2 System Components
15.2.1 Frame and Enclosure
15.2.3 Cooling
15.2.6 Cable Entrance
15.2.4 Access
15.2.5 Circuit Breakers
15.2.7 Doors
Table 21 MTA plug pinout
15.2.9 RS-232 Port
15.2.10 Terminal Port Connections
DB9 pinout
15.2.11 RS-232 Interface Parameters
15.2.12 Maintenance Bypass
Table 23 RS-232 settings
15.2.13 Fuseless Design
16.0 EVENT MESSAGE HELP TEXT
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
17.1 Proper Tightening of Nuts and Bolts
17.2 Testing the Liebert STS2
17.0 MAINTENANCE
17.3 Changing the Air Filter
SUPPORT INFORMATION
PROGRAMMABLE RELAY BOARD SETTINGS RECORD
Channel Channel Channel Channel Channel Channel Channel
Maintenance
Channel Channel Channel PRB Notes
INPUT CONTACT ISOLATOR SETTINGS RECORD
Channel Channel Channel Channel Channel Channel Channel Channel
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