Liebert Static Transfer Switch 2 Installation, Operation & Maintenance Manual Download Page 1

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OWER

ROTECTION

Static Transfer Switch 2

NSTALLATION

, O

PERATION

& M

AINTENANCE

ANUAL

100-1000 Amp, 50-60 Hz

Summary of Contents for Static Transfer Switch 2

Page 1: ...POWER PROTECTION Static Transfer Switch 2 INSTALLATION OPERATION MAINTENANCE MANUAL 100 1000 Amp 50 60 Hz...

Page 2: ......

Page 3: ...2 2 2 Unit Preparation 9 2 3 Internal Inspections 9 3 0 LOCATION CONSIDERATIONS 10 3 1 Recommended Minimum Service Clearances 10 3 2 Heat Output 10 3 3 Operating Environment 10 3 4 Altitude 11 4 0 LOC...

Page 4: ...and Agency Requirements 52 8 1 3 Factory Backup and Service Assistance 52 8 2 Modes of Operation 52 8 2 1 Normal Preferred Source 52 8 2 2 Transfer 52 8 2 3 Transfer Inhibit 53 8 2 4 Bypass 53 8 3 Op...

Page 5: ...Logs 66 11 2 1 Event Log 66 11 2 2 History Log 66 11 3 Alarm Notes 67 11 4 List of Messages 67 12 0 COMMUNICATION INTERFACES 70 12 1 Using the RS 232 Port 70 12 1 1 Connecting and Using a Terminal 71...

Page 6: ...uency 107 15 1 2 Input Output Voltage 107 15 1 3 System Current Ratings 107 15 1 4 Grounding 108 15 1 5 Electrical Requirements 108 15 1 6 Input Surge Suppression 108 15 1 7 Response Time 108 15 1 8 E...

Page 7: ...v 17 0 MAINTENANCE 135 17 1 Proper Tightening of Nuts and Bolts 135 17 2 Testing the STS2 135 17 3 Changing the Air Filter 135 17 4 Contacting Liebert 136...

Page 8: ...vi...

Page 9: ...gle Output Breaker 36 Figure 19 Electrical Field Connections 800 1000 Amp STS2 with Dual Output Breakers 37 Figure 20 Circuit Breaker Schedule 38 Figure 21 Control Connection Location Diagram 100 600...

Page 10: ...viii Figure 50 Front Panel LEDs and Buttons 100 Figure 51 Control Buttons 100 Figure 52 Key Lockout Switch 102...

Page 11: ...vent Messages 68 Table 10 Terminal Commands 71 Table 11 Value Types 73 Table 12 Group Settings and Values 73 Table 13 Binary Hexidecimal Conversions 76 Table 14 Set Point Parameters 85 Table 15 Standa...

Page 12: ...x...

Page 13: ...and install the unit in an area free from flammable liquids gases or corrosive substances The unit is designed to operate from solidly grounded AC power sources only Provide input over current protect...

Page 14: ...or should that be required 5 0 Power and Control Wiring provides instructions wiring the STS2 for power and control connections 6 0 Options lists the options available for the STS2 7 0 Installation Dr...

Page 15: ...following information available PROGRAMMABLE RELAY BOARD SETTINGS RECORD The optional Programmable Relay Board PRB has eight channels to report events to an external device Up to ten 10 events can be...

Page 16: ...4 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8 Channel 9 Channel 10 PRB Notes...

Page 17: ...e routed through the static transfer switch s alarm network See 6 2 Input Contact Isolator Board on page 19 for more information on the ICI If your STS2 has the ICI option installed list the settings...

Page 18: ...6...

Page 19: ...hree types of messages are used throughout this manual to stress important text Carefully read the information below each Warning Caution and Note and use professional skills and prudent care when per...

Page 20: ...e cabinets to verify that the model numbers correspond with the one specified Record the model numbers and serial numbers in the front of this installation manual A record of this information is neces...

Page 21: ...he shipping blocks from under the frame of the unit 4 Use a forklift to raise the unit off the pallet and onto the floor Ensure that the forklift is clear of the unit s casters and leveling feet Lift...

Page 22: ...out switch see Figure 8 through Figure 10 for location of that switch 3 1 Recommended Minimum Service Clearances The recommended service clearances are at the front of the unit The minimum service cle...

Page 23: ...tion at altitudes above 4000 feet 1200 m Figure 2 Maximum Ambient Temperature for Full Load Operation at Higher Altitudes Table 2 Altitude Conversion Feet to Meters Feet Meters Feet Meters Altitude 40...

Page 24: ...ete floor to ensure stability for the unit in the event of seis mic activity The seismic brackets are an option for the STS2 and are shipped separately from the unit when ordered See Figure 11 on page...

Page 25: ...al on page 14 If input junction boxes are not furnished the input power connections are made to the bus bars provided inside the unit These bus bars are accessible through the front of the unit Output...

Page 26: ...on This option is available only with bottom cable entrance typically when the unit is located on a raised floor If the input junction boxes will be used they either can be shipped with the unit or sh...

Page 27: ...interconnected The NEC prohibits grounding a power source at more than one point Connecting the neutrals of two grounded power sources together effectively grounds each of the sources at more than on...

Page 28: ...from a remote location Terminal connections allow the customer to remotely select a source to be the preferred source in the same process as the local source transfer selection The unit s preferred s...

Page 29: ...ices or the local Liebert representative Table 7 provides transformer tap information Table 6 Remote Source Selection Terminal Block Contact Connection 1 Source 1 2 Isolated ground 3 Source 2 4 Isolat...

Page 30: ...ay See Configuring the Programmable Relay Board Settings on page 91 for default settings and instructions for reconfiguring the relays See Figure 21 on page 39 and Figure 22 on page 40 for the locatio...

Page 31: ...formation alarm history information and the history of status screens that are triggered upon a major alarm event The monitoring system software also supports an auto dial feature that allows the syst...

Page 32: ...e with the STS2 following the last request for a preferred source change regardless of whether it was from the local or Remote Source Selection controls See 10 3 Enabling Remote Source Selection on pa...

Page 33: ...ed for connection between the unit and the junc tion box The cable length between the unit and junction box is 10 feet 3 meters long See 5 2 Input Junction Box Installation Optional on page 14 for mor...

Page 34: ...22 Options...

Page 35: ...DED 12MM INSERT IS APPROX 3 4 DEEP MOUNTING BOLTS MUST BE THREADED INTO UNIT MOUNTING HOLES FROM 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FORK...

Page 36: ...OUNTING LOCATION IS SUPPORTED BY 2 10 GA 135 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FORKLIFT HANDLING 4 HEAT OUTPUT 6970 BTU HR 2 04 KW HR M...

Page 37: ...G HOLES USED FOR SEISMIC ANCHORING OR FLOOR 11 EACH MOUNTING LOCATION IS SUPPORTED BY 2 10 GA 135 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FOR...

Page 38: ...OX 3 4 DEEP MOUNTING BOLTS MUST BE THREADED INTO UNIT MOUNTING HOLES FROM 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FORKLIFT HANDLING 4680 BTU...

Page 39: ...LOCATION IS SUPPORTED BY 2 10 GA 135 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FORKLIFT HANDLING 4 HEAT OUTPUT 6970 BTU HR 2 04 KW HR MAX FOR 4...

Page 40: ...S USED FOR SEISMIC ANCHORING OR FLOOR 11 EACH MOUNTING LOCATION IS SUPPORTED BY 2 10 GA 135 7 KEEP CABINET WITHIN 15 DEG OF VERTICAL WHILE HANDLING 6 UNIT BOTTOM IS STRUCTURALLY ADEQUATE FOR FORKLIFT...

Page 41: ...REAR FLOOR BRACKETS ON FLOOR AT LEAST 75 FROM BACK WALL MARK LOCATION AND DRILL HOLES FIG 1 TO A MINIMUM DEPTH OF 4 12 INTO THE CONCRETE 3 INSTALL REAR CABINET BASE BRACKET FIG 2 TO EXISTING HOLES ON...

Page 42: ...NTO THE CONCRETE 3 INSTALL REAR CABINET BASE BRACKET FIG 2 TO EXISTING HOLES ON UNDERSIDE OF UNIT WITH TABS FACING BACK WALL USE SUPPLIED HARDWARE AND TORQUE TO 365 LB INCH 41 2 Nm NOTE LOOSEN LEVELIN...

Page 43: ...ASE BRACKET FIG 2 TO EXISTING HOLES ON UNDERSIDE OF UNIT WITH TABS FACING BACK WALL USE SUPPLIED HARDWARE AND TORQUE TO 365 LB INCH 41 2 Nm NOTE LOOSEN LEVELING BOLT LOCKING NUT AND TIGHTEN AFTER BRAC...

Page 44: ...TO BE IN ACCORDANCE WITH NATIONAL 4 ALUMINUM AND COPPER CLAD ALUMINUM CABLES ARE 3 CONTROL WIRING AND POWER WIRING MUST BE RUN 2 TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH AND LOCAL ELECTRICAL CODES...

Page 45: ...ED DRAWN BY REF DWG CHK BY V CARMONA ONE LINE DIAGRAM SYSTEM OUTPUT STATICSWITCH2 EFC PS212101 03 PS212101 DATE 3 4 16 03 COLUMBUS OHIO 43229 1050 DEARBORN DRIVE NOT RECOMMENDED NOTES 1 ALL DIMENSIONS...

Page 46: ...3 K2 CB4 K1 CB3 K3 K1 K2 CB5 SOURCE 1 CB1 CB2 SOURCE 2 DATE FILE NAME COLUMBUS OHIO 43229 1050 DEARBORN DRIVE REV NO DWG NO V CARMONA REF DWG CHK BY DRAWN BY 2 NOT RECOMMENDED NOTES 1 ALL DIMENSIONS A...

Page 47: ...B4 K1 K3 K1 K2 CB5 SOURCE 1 CB1 CB2 SOURCE 2 DATE FILE NAME COLUMBUS OHIO 43229 1050 DEARBORN DRIVE REV NO DWG NO V CARMONA REF DWG CHK BY DRAWN BY CB3A CB3 CB3A 2 NOT RECOMMENDED NOTES 1 ALL DIMENSIO...

Page 48: ...NE DIAGRAM STATICSWITCH2 OUTLINE PS212800 02 PS212800 4 16 03 DATE COLUMBUS OHIO 43229 1050 DEARBORN DRIVE CB4 K3 K2 K1 CB5 K3 K1 K2 SOURCE 1 CB1 SOURCE 2 CB2 2 NOT RECOMMENDED NOTES 1 ALL DIMENSIONS...

Page 49: ...VIEW SECTION A A 2 NOT RECOMMENDED NOTES 1 ALL DIMENSIONS ARE IN INCHES AND MILLIMETERS 5 ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL 4 ALUMINUM AND COPPER CLAD ALUMINUM CABLES ARE 3 CONTROL WIRIN...

Page 50: ...Y OTHERS MUST PROVIDE OVERCURRENT PROTECTION UPSTREAM OVERCURRENT PROTECTION SHOULD HAVE AMPACITY EQUAL TO OR LESS THAN THE AMPERE RATING OF THE STATIC SWITCH MOLDED CASE BREAKER TO MEET THE WITHSTAND...

Page 51: ...BOARD FOR SITESCAN INPUT CONTACT ISOLATOR BOARD PROGRAMMABLE RELAY SEE OPTION OPTION LOCATION DETAIL LOCATION DETAIL BOARD OPTION SEE NOTE 2 OPTION OR PROGRAMMABLE RELAY EXTERNAL AND INTERNAL CARD NI...

Page 52: ...REF DWG CHK BY DRAWN BY CONTROL CONNECTION LOCATION DIAGRAM 800 1000 AMP STATIC TRANSFER SWITCH 2 CONTROL WIRING COLUMBUS OHIO 43229 1050 DEARBORN DRIVE 6 9 03 STATICSWITCH2 CONTROLWIRE PS213800 01 C...

Page 53: ...REFERRED 2 1 3 4 5 6 SOURCE 2 PREFERRED SEE NOTE 1 NOTES 5 ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL DIAGRAM FOR LOCATION OF REMOTE SOURCE SELECTION OPT 4 REFER TO STATIC TRANSFER SWITCH CONTROL...

Page 54: ...ER TO INSTALLATION OPERATION MAINTENANCE SIGNAL CHANNELS WITH 2 FORM C DRY CONTACTS PER 2 PROGRAMMABLE RELAY BOARD OPTION INCLUDES 8 TERMINAL BLOCKS 1 THROUGH 15 1 CUSTOMER CONTROL WIRING CONNECTION P...

Page 55: ...T BE COMBINED IN THE SAME CONDUIT MANUAL FOR CONFIGURING THE INPUT CONTACT ISOLATOR 3 REFER TO INSTALLATION OPERATION MAINTENANCE 2 CUSTOMER PROVIDED NORMALLY OPEN DRY CONTACTS 1 CUSTOMER CONTROL WIRI...

Page 56: ...R SUPPLIED INTERCONNECTING CABLE TO SITESCAN 3 2 1 BOARD AND LOCAL ELECTRICAL CODES 6 ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL OF STATIC TRANSFER SWITCH FOR LOCATION OF COMMS 5 REFER TO CONTROL...

Page 57: ...INTERCONNECTING CABLE SEE NOTES J1A MANUAL FOR CONFIGURING THE INTERNAL MODEM OPTION 5 REFER TO CONTROL CONNECTION LOCATION DIAGRAM OF SEPARATE FROM POWER WIRING CONTROL WIRING RUNS 4 ALL CONTROL WIRI...

Page 58: ...M SEPARATE FROM POWER WIRING CONTROL WIRING RUNS 4 ALL CONTROL WIRING BY OTHERS MUST BE RUN SHOULD NOT BE COMBINED IN THE SAME CONDUIT MANUAL FOR CONFIGURING THE NETWORK INTERFACE 3 REFER TO INSTALLAT...

Page 59: ...Y DRAWN BY FRONT VIEW UPPER HALF OF UNIT WITH DOOR OPENED LCD DISPLAY SEE DETAIL A STATICSWITCH2 OUTLINE PS213006 PS213006 DATE 11 8 02 COLUMBUS OHIO 43229 1050 DEARBORN DRIVE DETAIL A RXD DB9 CONNECT...

Page 60: ...152 D E 12 305 10 254 33 830 INPUT JUNCTION BOX 2 6 AWG TO 2 500 kcmil G H 5 16 8 7 16 11 1 25 3 76 6 AWG TO 2 0 AWG WIRE SIZE RANGE RECOMMENDED LOCATION FOR CUSTOMER CONNECTION OF INPUT POWER RACEWA...

Page 61: ...Y EVENT DISPLAY LOGS SOURCE XFERS RESET SI SCR SHORT S2 SCR SHORT ALARM CONTROLS MIMIC CB 2 SILENCE ALTERNATE 30 SOURCE 2 A B B C C A 195V 195V 195V 0A 0A 0A 0 0 HZ CB 1 PREFERRED SOURCE 1 A B B C C A...

Page 62: ...50 Installation Drawings...

Page 63: ...ent and environmental parameters can be config ured to trigger events that can sound an alarm write to a history log and either transfer sources or inhibit a transfer In units not equipped with the to...

Page 64: ...hout de energizing the load All solid state power switching devices are rated to prevent hazardous device failure in power systems with available fault currents up to the defined limits as listed in 1...

Page 65: ...is a touch screen LCD that provides a color diagram Mimic that dis plays the current status of the unit System parameters are displayed and help is available to define events See Figure 32 below and...

Page 66: ...nual transfer by selecting the inactive source as the preferred source On a manual transfer the STS2 transfers between the two sources with less than one 1 millisecond interruption of power to the loa...

Page 67: ...86 under the Source Set Points heading for details 9 1 6 SCR Failure The STS2 continuously monitors the status of the SCR switching devices for proper operation In the event of a shorted SCR on the in...

Page 68: ...n event messages Touch screen alarm reset and silence buttons Events in the system both faults and alarms are detected and displayed on the LCD See 11 0 Alarm and Faults on page 65 for more informatio...

Page 69: ...ces without any outside assistance once set up and started properly 9 2 5 Audible Alarm An audible alarm is installed on the control board This alarm is triggered by an alarm condition detected on the...

Page 70: ...us preventing CB4 or CB5 from being turned ON 2 Source input power should be applied to both STS2 inputs The touch screen control panel should become active and operate properly when at least one of t...

Page 71: ...play and the Mimic that there are no active alarms If any active alarms are displayed refer to 11 0 Alarm and Faults for a description of the alarms and possible causes All active alarm conditions sho...

Page 72: ...fers the load to the alternate source by selecting the alternate source as the preferred source This source is now monitored as the preferred source throughout the various configurations set up throug...

Page 73: ...transfer switch one line diagram Figure 3 on page 14 While operating on maintenance bypass all voltages are removed from the STS2 electronics to facilitate safe repair without de energizing the load u...

Page 74: ...otate interlock keys in CB4 bypass breaker interlock to retract interlock 7 Close bypass breaker CB4 8 Verify the breaker status on the Mimic screen 9 Open source input breaker CB1 10 Rotate the inter...

Page 75: ...e control panel See Figure 35 10 4 2 Bypass Procedures for Source 2 To bypass the switch for Source 2 1 Verify Source 2 is supplying power via the Mimic If the Color Graphical Display is not available...

Page 76: ...y is not available check the gate driver board LEDs through the slots in the control panel See Figure 35 10 5 Normal System Shutdown The STS2 can be shut down from either the static switch mode or the...

Page 77: ...er Settings Many alarms clear themselves when the condition is resolved If an alarm event mask is set to latch the alarm messages remain active until the alarm condition has been corrected and the RES...

Page 78: ...Input Contact Isolator settings Total the sum of all the events currently logged 11 2 2 History Log When a designated major alarm occurs the History Status buffer is frozen capturing 64 sequential fr...

Page 79: ...witch CB1 or CB2 to prevent transfers in the event of an SCR failure The SCR failure must be investigated and repaired before returning the switch to normal operation Both source input switches must b...

Page 80: ...Source 2 SCR sense module failed D A E 017 S1 CURR SENSE FAIL The Source 1 SCR current module failed D A E 018 S2 CURR SENSE FAIL The Source 2 SCR current module failed D A E 019 S1 GATE DRIVE FAIL T...

Page 81: ...ONTACT 8 Input Contact x is an optional alarm input The alarm name can be programmed with an alarm name from the Input Contactor Isolator settings option under the Comm Options See Configuring the Inp...

Page 82: ...nterface Card NIC optional the NIC provides connectivity to any TCP IP based Ethernet network to allow the device to communicate with network management systems NMS via SNMP Events can be transmitted...

Page 83: ...STS2 Touch Screen Display for more details about the commands Some terminal commands require a password to function Use the PWD command and a valid pass word to gain access Table 10 Terminal Commands...

Page 84: ...ings are group 2 The numbers shown below are entered for the group parameter For example start of a System Settings command is SPT 2 The group parameters are 1 System Ratings 2 System Settings 3 User...

Page 85: ...large amount of data within a single entry A detailed description of this type appears in section 12 1 3 Setting Bitpacked Options with the Terminal on page 74 Event Masks This type is a specially for...

Page 86: ...y Integer In 1 4 lines cycles 6 SRC1 I peak Transfer Setpoint Integer x 10 7 SRC2 Fast Undervoltage Setpoint Integer In of nominal below nominal 8 SRC2 Slow Undervoltage Setpoint Integer In of nominal...

Page 87: ...3 not used set to 0 bit4 HasSiteScan bit5 not used set to 0 bit6 not used set to 0 bit7 HasOpenCommsDigitalInputBrd bit8 HasOpenCommsDigitalOutputBrd_1 bit9 HasOpenCommsDigitalOutputBrd_2 bit10 HasRem...

Page 88: ...y value each group into its hex equivalent 3 Enter the hex values for each group in order into the command for the value parameter The following example explains how the conversion is completed Puttin...

Page 89: ...e ID numbers for each event are listed with the events in Table 9 on page 68 D L S E A the event masks Dial Latch Summary Event log and Audible The masks are the value parameter for the command Each m...

Page 90: ...78 Communication Interfaces...

Page 91: ...tification and other system setpoints The touch screen also provides buttons to reset alarms and turn off audible alarms such as a horn 13 1 Display Overview The STS2 Color Graphical Display provides...

Page 92: ...actory to default settings These settings enable the unit to be brought up without the need to enter all selectable parameters The menus allow the set tings to be customized Figure 37 Menus Figure 38...

Page 93: ...pening the front door See Figure 8 through Figure 10 for location of the key lockout switch To disable the changes turn the key to the top of the switch toward the closed padlock To enable changes tur...

Page 94: ...age in the Event Display to display more information in the Display Panel to the left The selected status is displayed in bold type 13 6 Menu bar As previously mentioned the menu bar provides both con...

Page 95: ...to disable the setting 3 Select SAVE to keep the settings Figure 40 Event Mask Dialog Box User Settings The User Settings choice allows you to adjust the user accessible switch settings Access is limi...

Page 96: ...ce to the opposite source Slow UV Setting if the voltage remains this set percentage below the nominal voltage for the period of the slow detection delay the STS2 transfers from the current source to...

Page 97: ...n is 1 deg b Select OK to save the setting The setting is now displayed in the adjacent field in the User Settings dialog box 8 Select FREQUENCY TRIP POINT A keypad is displayed This choice verifies t...

Page 98: ...g The setting is now displayed in the adjacent field in the User Settings dialog box You can select TEST to briefly sound the alarm to judge its volume 11 Select DISPLAY BRIGHTNESS A dialog box is dis...

Page 99: ...x is displayed See Figure 43 An option can be enabled by selecting YES An option can be disabled by selecting NO An option can be configured by selecting the adjacent option button to display a separa...

Page 100: ...jor alarms activate the auto dial modem sequence Automatic dial attempts are made to the first number three times at 30 seconds between attempts If connection is not established in that time period th...

Page 101: ...choice to enter the secondary telephone number for the modem to dial when an alarm is triggered 7 Enter the number in the keypad dialog box 8 Select OK to save the telephone number The number is disp...

Page 102: ...the pager that you want the system to call Configuring the Input Contact Isolator Settings The Input Contact Isolator ICI is an optional eight channel input board for up to eight external user alarm o...

Page 103: ...t contact 8 Repeat steps 2 to 7 for each input contact 9 Select SAVE after you have configured all input contacts Be sure to select Save even if you have accessed this dialog only to change a setting...

Page 104: ...hecks the status of the items defined for each contact and updates the state of the relay To configure your programmable relay boards for user defined settings 1 Select PROG RELAY BOARD x from the Com...

Page 105: ...lation and Users Guide for configuration instructions for the card If the optional OpenComm NIC is installed in the STS2 Select YES for the Network Interface Card option in the Comm Options dialog box...

Page 106: ...Output Transformer controls the firing of the SCRs on startup which minimizes the inrush into PDU transformers Output breakers and PDU input breakers have to be closed when you start up the system Bas...

Page 107: ...aults on page 65 for more information on these events and see 11 2 1 Event Log for more information on the Event Log and definitions of the fields displayed in the Event Log screen Figure 48 Event Log...

Page 108: ...S allows you to manually select a preferred source To switch the primary source refer to the instructions in Manual Transfer Preferred Source Selection on page 59 13 6 4 Startup Procedure You can acce...

Page 109: ...nu choice shows the Liebert and Emerson logo in the Display panel 13 7 Cleaning the LCD Touch Screen If the touch screen requires cleaning use a pre moistened towelette designed for cleaning CRTs or d...

Page 110: ...98 STS2 Touch Screen Display...

Page 111: ...gs that are available in the Color Graphical Display touch screen See 12 1 Using the RS 232 Port on page 70 for instructions on setting up and using a terminal with the unit 14 1 LEDs and Buttons and...

Page 112: ...1 Input Source 1 2 Input Source 2 3 Output 3a Output dual system 4 Input Source 1 Bypass 5 Input Source 2 Bypass ITALICS Components LEDs are defined in Table 16 on page 101 Buttons are defined in Tab...

Page 113: ...green LED is lit if Source 2 power is within the programmed tolerance for all phases STS1 Source 1 SCRs A green LED is lit when the SCRs for Source 1 are closed STS2 Source 2 SCRs A green LED is lit w...

Page 114: ...kout Switch ALRM Alarms A red LED is lit when an alarm condition is present in the STS2 Connect a PC terminal to the STS2 to locate the exact cause See Communication Interfaces for PC terminal command...

Page 115: ...CB2 The green LED for CB2 turns on 6 Verify that the preferred source LED green LED_PREFx is lit for the source that you want the switch to be using 7 Verify that the green LED for the corresponding S...

Page 116: ...s to the desired source and the output OUT LED remains lit 14 2 3 Maintenance Bypass The STS2 is equipped with two key interlocked bypass breakers CB4 and CB5 to allow manual bypass of the switch elec...

Page 117: ...t 6 Open bypass breaker CB4 Rotate keys in CB4 interlock to extend interlock The LED for CB4 is turned off 7 Remove proper key from CB4 interlock and insert it in CB2 breaker interlock 8 Rotate the ke...

Page 118: ...from either the static switch mode or the bypass mode Shutdown in Static Transfer Switch Mode When the Static Transfer Switch is operating on static transfer switch mode not main tenance bypass mode 1...

Page 119: ...tage must be three phase AC 3 or 4 wire plus ground The STS2 is designed to accept an input neutral from each source The voltage shall be within 10 of the nominal voltage The output voltage shall be t...

Page 120: ...time is less than 4 ms The over voltage detection uses a single threshold with programmable level and delay time See User Settings on page 83 for instructions on configuring these settings 15 1 8 Envi...

Page 121: ...ent leveling feet for final installation The unit also can be fastened to the floor using optional seismic anchors to meet seismic Zone 4 requirements See 4 0 Locating the STS2 on page 12 and Figure 1...

Page 122: ...aker includes an interlock which prevents the breaker from being unplugged without being in the OFF open posi tion Mechanical interlocks are provided on the breakers to prevent improper maintenance by...

Page 123: ...es the terminal port with no handshaking The serial port conforms to RS 232 levels with a data format of 9600 Baud 1 start bit 8 data bits and no parity bits The serial port is 1000 Volt DC isolated n...

Page 124: ...ing the Color LCD Graphical Dis play unit and 14 2 3 Maintenance Bypass on page 104 for instructions using the LED units 15 2 13 Fuseless Design All STS2 units are fuseless and are UL rated for use wi...

Page 125: ...Source 2 has shorted Transferring between sources has been inhibited Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the STS2 system from a termi...

Page 126: ...d States contact Liebert Global Services if available in your area For international areas not covered by Liebert Global Services the Liebert authorized distributor can provide technical support Press...

Page 127: ...ert authorized distributor can provide technical support Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the STS2 system from a terminal type SH a...

Page 128: ...ea For international areas not covered by Liebert Global Services the Liebert authorized distributor can provide technical support Press SILENCE on the touch screen to turn off the audible alarm if so...

Page 129: ...ct technical support in the United States call 1 800 LIEBERT 1 800 543 2378 Outside the 48 contiguous United States contact Liebert Global Services if available in your area For international areas no...

Page 130: ...the STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audible alarm This event was written to the Events Log is so configured The alarm has triggered a message to b...

Page 131: ...n the display If you are accessing the unit from a terminal type CA and press RETURN on your keyboard INTERNAL COMM FAIL Internal CAN Communications Failed Communications have failed in the CAN bus be...

Page 132: ...reaker 2 failed to trip open when the control issued a command for the circuit breaker to trip Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the...

Page 133: ...e alarm if so configured If you are accessing the STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audible alarm The alarm is latched and must be reset after the v...

Page 134: ...o the Event Log if so configured The alarm has triggered a message to be sent to the modem if so configured If configured to be a latching alarm press RESET on the display If you are accessing the uni...

Page 135: ...modem if so configured If configured to be a latching alarm press RESET on the display If you are accessing the unit from a terminal type CA and press RETURN on your keyboard S2 UF OF Source 2 Under...

Page 136: ...An overload condition is detected when the measured load current is equal to or greater than the setpoint Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are a...

Page 137: ...lay If you are accessing the unit from a terminal type CA and press RETURN on your keyboard The alarm has triggered a message to be sent to the modem if so configured SOURCES OUT OF SYNC Sources out o...

Page 138: ...le alarm The event was written to the Event Log if so configured The alarm has triggered a message to be sent to the modem if so configured If configured to be a latching alarm press RESET on the disp...

Page 139: ...ured If you are accessing the STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audible alarm This event was written to the Event Log if so configured The alarm has...

Page 140: ...it from a terminal type CA and press RETURN on your keyboard S2 PHASE ROT ERROR Source 2 Phase Rotation Error A phase rotation error condition exists on Source 2 Check the phase sequence ABC of Source...

Page 141: ...e touch screen to turn off the audible alarm if so configured If you are accessing the STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audible alarm The event wit...

Page 142: ...ss RETURN on your keyboard INPUT CONTACT 5 Input Contact Isolator 5 Occurrence of the indicated external event has been detected by Input Contact Isolator 5 of the Open Comms Digital Input option boar...

Page 143: ...assigned name was written to the Event Log if so configured The alarm has triggered a message to be sent to the modem if so configured If configured to be a latching alarm press RESET on the display I...

Page 144: ...so configured The alarm has triggered a message to be sent to the modem if so configured If configured to be a latching alarm press RESET on the display If you are accessing the unit from a terminal t...

Page 145: ...en resolved the history logs should be cleared to make them available for capturing future events To clear the History Logs select the CLEAR HLOG button under the LOGS HISTORY LOG 1 or LOGS HISTORY LO...

Page 146: ...134 Event Message Help Text...

Page 147: ...ating Instructions for the Touch Screen Interface For a LED Display unit see Manual Transfer Preferred Source Selection on page 104 in 14 0 Operating the LED Display STS2 17 3 Changing the Air Filter...

Page 148: ...with minimal downtime Liebert Global Services offers a complete range of start up services repair services preventive maintenance plans and service contracts For repair or maintenance service outside...

Page 149: ......

Page 150: ...s resulting from use of this information or for any errors or omissions 2002 2003 Liebert Corporation All rights reserved throughout the world Specifications subject to change without notice Liebert a...

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