For Business-Critical Continuity
Liebert Static Transfer Switch
AC Power
Page
1.0 SAFETY PRECAUTIONS 2.0 UNPACKING AND INSPECTIONS
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS OVERVIEW OF MANUAL
9.0 THEORY OF OPERATION
7.0 INSTALLATION DRAWINGS 8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
11.0 ALARM AND FAULTS
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
15.0 SPECIFICATIONS
12.0 COMMUNICATION INTERFACES
SUPPORT INFORMATION PROGRAMMABLE RELAY BOARD SETTINGS RECORD
16.0 EVENT MESSAGE HELP TEXT 17.0 MAINTENANCE
INPUT CONTACT ISOLATOR SETTINGS RECORD
17.2 Testing the Liebert STS2 17.3 Changing the Air Filter
FIGURES
TABLES
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
OVERVIEW OF MANUAL
Read this entire manual before installing and operating the unit
1.0 SAFETY PRECAUTIONS
2.0 UNPACKING AND INSPECTIONS
2.1 External Inspections
2.2 Unloading and Handling
2.2.2 Unit Preparation
2.3 Internal Inspections
2.2.1 Handling Considerations
3.2 Heat Output
3.1 Recommended Minimum Service Clearances
3.3 Operating Environment
3.0 LOCATION CONSIDERATIONS
Figure 1 Recommended derating for high altitude operation
3.4 Altitude
4.3 Leveling and Anchoring the Static Switch Using Floor Stand
4.2 Leveling of the Static Switch Without Anchoring
4.1 Leveling and Anchoring the Unit to the Floor
4.0 LOCATING THE LIEBERT STS2
5.0 POWER AND CONTROL WIRING
5.1 Input And Output Power Connections
Input/output conduit plate specifications
5.2 Input Junction Box Installation-Optional
Figure 3 Typical static transfer switch one-line diagram
Input junction box terminal wire size range
Input junction box dimensions
Power and Control Wiring
#6 to #2/0 AWG
5.3 System Grounding
5.4 Control Wiring Connections
Remote source selection terminal block
5.5 Remote Source Selection Wiring
5.6 Power Supply
6.2 Optimized Transfer
6.1 Programmable Relay Board
6.0 OPTIONS
Programmable relay board pinout
6.4 Input Contact Isolator Board
6.3 Distribution Cabinet With I-Line Panelboard-100-600A Units Only
6.5 Comms Board
6.6 Liebert IntelliSlot Web/485 Card With Adapter
6.7 LED Display
6.9 Key Lockout Switch
6.8 Remote Source Selection
6.10 Redundant Output Breaker
6.13 Seismic Floor Stand
6.11 Input Junction Boxes and Cables
6.12 Seismic Floor Anchors
Figure 5 Outline drawing 100 - 250 amp Liebert STS2
7.0 INSTALLATION DRAWINGS
PS211400
Installation Drawings
Figure 6 Outline drawing 400 - 600 amp Liebert STS2
PS211800
Installation Drawings
Figure 7 Outline drawing 800 - 1000 amp Liebert STS2
PS211101 Rev
PS211401
Installation Drawings
PS211801
Installation Drawings
Figure 11 Seismic anchor
Installation Drawings
FRONT
SYSTEM SEISMIC ANCHORING, FIGURE
FRONT
Installation Drawings
SYSTEM SEISMIC ANCHORING, FIGURE
Figure 12 Seismic anchor drawing 400 - 600 amp Liebert STS2
Figure 13 Seismic anchor drawing 800 - 1000 amp Liebert STS2
Installation Drawings
FRONT
SYSTEM SEISMIC ANCHORING, FIGURE
Installation Drawings
ONE-LINE DIAGRAM
FRONT VIEW
Figure 14 Electrical field connections
PS212101
Installation Drawings
Installation Drawings
ONE-LINE DIAGRAM SECTION A-A
FRONT VIEW
drawing 400 - 600 amp Liebert STS2 with single output breaker
PS212401
Installation Drawings
Drawings
breaker
PS212801
Installation Drawings
Figure 20 Liebert STS2 non-automatic circuit breaker schedule
Installation Drawings
Installation Drawings
CONTROL WIRING
PS213000 Rev
FRONT VIEW WITH FRONT DOOR REMOVED
Installation Drawings
CONTROL WIRING
PS213800
FRONT VIEW WITH FRONT DOOR REMOVED
See Note
Page
Installation Drawings
Figure 25 Control wiring for the input contact isolator board option
“NO CUSTOMER CONNECTION”
J51 INPUT CONTACT ISOLATOR BOARD 02-810012-XXPS213002
PS213003
Figure 26 Control wiring for comms board
COMMS BOARD
TB2 DB-9J3
TB3 TB3
Front View
1. RS-232 communication through DB9 connector
PS213006 Rev
DB9 Connector Detail A
Customer Connection of Input Power Racewayby others
Power Terminal Block
3-Phase, 3-Wire Plus Ground
Location of Factory-Supplied Input Power Cable Assembly
Installation Drawings
ALARM
RESET
MIMIC
PS211002 Rev
Installation Drawings
Figure 31 LED display
PS215000 REV. NO
Figure 32 Installation drawing, seismic floor stand 100-250A
Installation Drawings
stand
Installation Drawings
PS215001 Rev
Installation Drawings
Figure 34 Installation drawing, seismic floor stand 100-250A
FRONT LEFT ISOMETRIC VIEW
RIGHT SIDE VIEW
PS215003 Rev
Figure 35 Installation drawing, seismic floor stand 100-250A
Installation Drawings
Installation
HARDWARE TORQUE CHART
PS216000 Rev.0
HEIGHT TABLE
PS216001 Rev
Figure 37 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216002 Rev
Figure 38 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216003 Rev
Figure 39 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS217000 Rev
Figure 40 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
drawing
Installation Drawings
PS217001 Rev
PS217002 Rev
Figure 42 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
PS217003 Rev
Figure 43 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
8.1.1 Redundancy
8.1 System Description
8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
8.2 Modes of Operation
8.1.3 Factory Backup and Service Assistance
8.1.2 Reliability and Agency Requirements
8.2.1 Normal Preferred Source
Figure 44 Liebert STS2 touch screen display
8.3 Operator Controls
8.2.4 Bypass
9.1 General Description
9.1.1 Liebert STS2 Static Transfer Switch
9.0 THEORY OF OPERATION
9.1.2 Source Transfer
9.1.4 Emergency Transfer
9.2 Detailed Component Description
9.1.5 Load Current Transfer Inhibit
9.1.6 SCR Failure
Firmware
Hardware
9.2.2 Circuit Breakers
9.2.3 SCRs
9.2.6 RS-232 Port
9.2.5 Audible Alarm
9.2.4 Logic Modules
10.0 OPERATING INSTRUCTIONS FOR THE TOUCH SCREEN INTERFACE
Figure 45 Liebert STS2 touch screen display
10.1 Normal System Turn-On
Figure 46 Source transfer screen
Settings on page
10.2 Manual Transfer / Preferred Source Selection
To manually select the preferred source
10.4 Maintenance Bypass
10.3 Enabling Remote Source Selection
Figure 47 Gate board viewing slot locations
To return to the normal mode
10.4.1 Bypass Procedures for Source
To bypass the switch for Source
10.5.1 Shutdown in Static Transfer Switch Mode
10.4.2 Bypass Procedures for Source
10.5.2 Shutdown in Maintenance Bypass Mode
10.5 Normal System Shutdown
11.1 Event Mask
11.0 ALARM AND FAULTS
11.2.2 History Log
11.2 Event and History Logs
11.2.1 Event Log
11.4 List of Messages
11.3 Alarm Notes
Alarm Message
Alarm and Faults
Event messages
Description/Cause
Event messages continued
Alarm and Faults
12.0 COMMUNICATION INTERFACES
12.1 Using the RS-232 Port
Terminal commands
12.1.1 Connecting and Using a Terminal
Terminal commands
12.1.2 Configuring the Liebert STS2 via the Terminal
Groups Parameter
Item Parameter
Table 10 Value types
Table 11 Group settings and values
Value Parameter
Communication Interfaces
Table 11 Group settings and values continued
Options1
12.1.3 Setting Bitpacked Options with the Terminal
Comms Options
Comms Options
Table 12 Binary-hexadecimal conversions
Critical Option Enabling
Non-Critical Option Enabling
12.1.4 Setting Event Masks with the Terminal
Putting the Terminal Command Together
SPT 2
NO spaces are placed between each mask listed above
Examples of Event Mask Settings
Figure 48 Liebert STS2 touch screen display
13.1 Display Overview
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
Figure 49 Menus
13.2 Menu Overview
Click OK to save the data that you have entered
Figure 50 Keyboard and keypad displays
Using the Password
Using the Optional Key Lockout Switch
Figure 51 Key lockout switch
To set or reset the password
13.3 Mimic Display
13.6.1 Configuration Menu
13.4 Event Controls
13.5 Event Display
To access the User Settings dialog box
User Settings
To set the event masks
Figure 52 Event mask dialog box
Source Set Points
Figure 53 User settings dialog box
Table 13 Sepoint parameters
To configure the setpoints for each source
Figure 54 Source setpoints
8. Select FREQUENCY TRIP POINT. A keypad is displayed
To access the System Settings menu
System Settings
Comm Options
Comm Options System Options System ID
Figure 56 Modem dialog box
Configuring the Modem
To configure the modem
Configuring the Input Contact Isolator Settings
Configuring Pager Support
Figure 57 Input contact isolator dialog box
To configure the Input Contact Isolator relays
To configure your programmable relay boards for user defined settings
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
Saving Your Communications Configurations
Liebert SiteScan Configuration
To save you communications configuration settings
System Options
If the Liebert STS2 is connected to a PDU configured as a Wye
4-Pole Transfer Switch
Shunt
Wye Output Transformer
Event Log
13.6.2 Logs
History Log
Figure 60 Event log
13.6.4 Startup Procedure
13.7 Cleaning the LCD Touch Screen
13.6.5 Bypass Procedure
13.6.3 Source Transfers
PS211002 Rev
14.1 LEDs and Buttons and Key Lockout Switch
14.0 OPERATING THE LIEBERT STS2 LED DISPLAY
14.1.1 Front Panel Controls
Operating the Liebert STS2 LED Display
14.1.2 LED and Push Button Description
Table 15 LED and push button description
Figure 63 Key lockout switch
14.1.4 Key Lockout Switch
14.2 Operations
14.1.3 Event Controls
14.2.2 Manual Transfer / Preferred Source Selection
To manually select the preferred source
Bypass Procedures for Source
14.2.3 Maintenance Bypass
If transfer to Source 2 is not desired
To return to the normal mode
To return to normal mode
Bypass Procedures for Source
If transfer to Source 1 is not desired
Shutdown in Maintenance Bypass Mode
Shutdown in Static Transfer Switch Mode
When the Static Transfer Switch is operating on bypass
14.2.4 Normal System Shutdown
15.0 SPECIFICATIONS
15.1 System Configuration
15.1.1 Frequency
15.1.2 Input/Output Voltage
15.1.5 Electrical Requirements
15.1.4 Grounding
15.1.6 Input Surge Suppression
15.1.7 Response Time
15.2.1 Frame and Enclosure
15.2 System Components
15.2.2 Casters, Leveling and Seismic Anchoring
15.2.3 Cooling
15.2.5 Circuit Breakers
15.2.4 Access
15.2.6 Cable Entrance
15.2.7 Doors
15.2.10 Terminal Port Connections
15.2.9 RS-232 Port
Table 21 MTA plug pinout
DB9 pinout
Table 23 RS-232 settings
15.2.12 Maintenance Bypass
15.2.11 RS-232 Interface Parameters
15.2.13 Fuseless Design
Event Message Help Text
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
17.0 MAINTENANCE
17.2 Testing the Liebert STS2
17.1 Proper Tightening of Nuts and Bolts
17.3 Changing the Air Filter
SUPPORT INFORMATION
Channel Channel Channel Channel Channel Channel Channel
PROGRAMMABLE RELAY BOARD SETTINGS RECORD
Channel Channel Channel PRB Notes
Maintenance
Channel Channel Channel Channel Channel Channel Channel Channel
INPUT CONTACT ISOLATOR SETTINGS RECORD
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0f Mission-Critical Data And Applications
Ensuring The High Availability
Ne t
ti n