Liebert POWER PROTECTION STATIC TRANSFER SWITCH Manuel d'utilisateur

POWER PROTECTIONSTATIC TRANSFER SWITCH 2USER MANUAL100-1000 Amp 50-60 Hz

2OVERVIEW OF MANUALThe STS2 Installation, Operation and Maintenance Manual is organized in a logical progression so that you can follow the procedures

STS2 Touch Screen Display928. Select FREQUENCY TRIP POINT. A keypad is displayed.This choice verifies that the source is running at the proper frequen

STS2 Touch Screen Display93System SettingsThe System Settings choice under the Config menu displays another pop-up menu with three choices:• Comm Opti

STS2 Touch Screen Display94Configuring the ModemThe Modem dialog box allows you to configure the optional, internal modem or an external modem that is

STS2 Touch Screen Display959. Select INIT. STRING to configure the initialization string.This string configures the parameters of the modem.• This set

STS2 Touch Screen Display96The delay allows you to set the number of seconds which a condition needs to persist to trigger an alarm.These input alarms

STS2 Touch Screen Display97Configuring the Programmable Relay Board SettingsThe STS2 can contain up to two Programmable Relay Boards (PRB) that can tr

STS2 Touch Screen Display98Figure 59 Programmable relay board dialog box2. Select your configuration settings.• Select STANDARD SET to use the setting

STS2 Touch Screen Display99SiteScan ConfigurationAn optional RS-422 port, contained in the Comms Board, can be installed in the static transfer switch

STS2 Touch Screen Display1004 Pole Transfer SwitchThis selection is set at the factory to indicate whether the system is a 3 pole or 4 pole unit.Shunt

STS2 Touch Screen Display10113.6.2 LogsTwo types of logs are kept by the STS2: Event Log and History Log.Event LogThe Event Log tracks the alarms and

Safety Precautions31.0 SAFETY PRECAUTIONSRead this manual thoroughly before working with the static transfer switch.Be sure to review the warning unde

STS2 Touch Screen Display102To use the History Log:1. Select LOGS from the menu bar to open the Logs menu.2. Select either HISTORY LOG 1 or HISTORY LO

Operating the LED Display STS210314.0 OPERATING THE LED DISPLAY STS2Certain models of the STS2 do not include the LCD Color Graphical Display with the

Operating the LED Display STS210414.1.2 LED and push button descriptionThe following table defines the LEDs and pushbuttons in the LED display:Table 1

Operating the LED Display STS210514.1.3 Event ControlsWhen an alarm is triggered, a red LED is lit in the control panel. A pair of buttons allows you

Operating the LED Display STS21066. Verify that the preferred source LED (green) (LED_PREFx) is lit for the source that you want the switch to be usin

Operating the LED Display STS210714.2.3 Maintenance BypassThe STS2 is equipped with two key-interlocked, bypass breakers, CB4 and CB5, to allow manual

Operating the LED Display STS2108Bypass Procedures for Source 2If transfer to Source 1 is not desired:1. Follow the instructions to transfer the load

Operating the LED Display STS210914.2.4 Normal System ShutdownThe STS2 can be shut down from either the static switch mode or the bypass mode.Shutdown

Specifications11015.0 SPECIFICATIONSThis section provides the specifications for the STS2.15.1 System ConfigurationThe STS2 can be set in several diff

Specifications11115.1.4 GroundingRefer to 5.3 - System Grounding for specifications and instructions regarding grounding.15.1.5 Electrical Requirement

Unpacking and Inspections42.0 UNPACKING AND INSPECTIONSA high-quality installation begins on the receiving dock. The STS2 and its packaging should be

Specifications11215.2 System ComponentsAll STS2 models provide two static transfer switches within one enclosure, with the ability to transfer between

Specifications11315.2.4 AccessThe STS2 is designed so all repairs and maintenance can be done from the front or top of the unit. All components that m

Specifications11415.2.9 RS-232 PortThe unit is equipped with an RS-232 port for connecting a terminal or PC. See Figure 29 for the port’s location. Se

Specifications11515.2.11RS-232 Interface ParametersThe service terminal interface parameters are the following settings and cannot be changed.15.2.12M

Event Message Help Text11616.0 EVENT MESSAGE HELP TEXTKey:ALL CAPS = event message displayed in the Event Display panel in the lower left corner of th

Event Message Help Text117S2 SCR OPENSource 2 SCR Open.One or more SCRs on Source 2 is open. Transferring between sources has been inhibited.STS2 outp

Event Message Help Text118PWR SPLY DC A FAILPower Supply DC Bus A FailedThe primary power supply is no longer providing DC power to the control board

Event Message Help Text119PWR SPLY S2 AC FAILPower Supply Source 2 AC FailedThe AC input power to the power supplies from Source 2 has failed. The po

Event Message Help Text120S1 VOLT SENSE FAILSource 1 Voltage Sense Module FailedThe module contained on the snubber monitoring the input voltage from

Event Message Help Text121S2 SCR SENSE FAILSource 2 SCR Sense Module FailedThe module contained on the snubber monitoring the SCRs for Source 2 has fa

Unpacking and Inspections52.2.1 Handling ConsiderationsThe static switch is bolted to a wooden shipping pallet to allow handling by forklift equipment

Event Message Help Text122S2 GATE DRIVE FAILSource 1 Gate Drive FailureThe gate drive module for an SCR for Source 2 has failed. This module is contai

Event Message Help Text123CB1 SHUNT TRIP FAILCircuit Breaker 1 Shunt Trip FailureCircuit Breaker 1 failed to trip open when the control issued a comma

Event Message Help Text124S1 UVSource 1 Under Voltage (fast detection). The input voltage from Source 1 dropped below a set percentage of the nominal

Event Message Help Text125S1 OF/UFSource 1 Over Frequency/Under FrequencyThe frequency for Source 1 is running outside the acceptable operating range,

Event Message Help Text126S2 UV (RMS)Source 2 Under Voltage (slow detection). The input voltage from Source 2 remained below a set percentage of the n

Event Message Help Text127S2 FAILSource 2 FailureSource 2 has failed due to under voltage (UV), over voltage (OV), or running with an over or under fr

Event Message Help Text128S1 I-PEAKCurrent Peak on Source 1The peak current from Source 1 has exceeded the set point as defined in the I-PK Xfer Locko

Event Message Help Text129LOAD ON ALT SOURCESTS2 load on the alternate source.The static transfer switch is running on the alternate power source. Che

Event Message Help Text130CB2 (S2) OPENCircuit Breaker 2 (for Source 2) OpenCircuit Breaker 2 is not closed. CB1 is only assigned to Source 2.Check

Event Message Help Text131CB3A (OUTPUT) OPENCircuit Breaker 3A (Output breaker) is Open (Optional)Circuit breaker 3A is not closed. This circuit brea

Location Considerations63.0 LOCATION CONSIDERATIONS The STS2 should be placed in a clean, cool and dry location. The STS2 requires only front access f

Event Message Help Text132TRANSFER INHIBITEDTransfer InhibitedUninterrupted transfer between sources is inhibited due to input source failure, sources

Event Message Help Text133INPUT CONTACT #2Input Contact Isolator #2Occurrence of the indicated external event has been detected by Input Contact Isola

Event Message Help Text134INPUT CONTACT #6Input Contact Isolator #6Occurrence of the indicated external event has been detected by Input Contact Isola

Event Message Help Text135CONFIG MODIFIEDConfiguration ModifiedA set point has been updated and saved.Press SILENCE on the touch screen to turn off th

Event Message Help Text136EVENT LOG CLEAREDEvent Log ClearedAll past alarms and faults are no longer recorded in the system’s event log.Press SILENCE

Maintenance13717.0 MAINTENANCEMinimal periodic maintenance of the STS2 is required. As with all electrical distribution components, the system should

Maintenance138SUPPORT INFORMATIONTo contact Liebert Global Services for information or repair service in the United States, call1-800-LIEBERT (1-800-5

Maintenance139PROGRAMMABLE RELAY BOARD SETTINGS RECORDThe optional Programmable Relay Board (PRB) has eight channels to report events to an external d

Maintenance140Channel 8:Channel 9:Channel 10:PRB Notes:

Maintenance141INPUT CONTACT ISOLATOR SETTINGS RECORDThe Input Contact Isolator board (ICI) provides an STS2 module interface for up to eight external

Location Considerations73.4 AltitudeThe standard units are designed for full load operation up to 4000 feet (1200 m) above sea level. See Figure 1 for

Maintenance142

The Company Behind the ProductsWith over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its

Locating the STS284.0 LOCATING THE STS2This section provides instructions for leveling the STS2 and anchoring the unit to the floor, should that be re

Power and Control Wiring95.0 POWER AND CONTROL WIRINGAll power and control wiring should be installed by a qualified electrician. All power and contro

Power and Control Wiring10The input and output power wire size should be based on the upstream overcurrent protection device, observing the NEC and lo

Power and Control Wiring115.3 System GroundingEquipment grounding — Grounding is primarily for equipment and personnel safety, although proper groundi

Power and Control Wiring125.5 Remote Source Selection WiringAn optional Remote Source Selection board may be installed in your STS2. This board is ins

Options136.0 OPTIONSThis section discusses the options available for the STS2. The communications options are also dis-cussed in 12.0 - Communication

Options146.3 Distribution Cabinet With I-Line Panelboard—100-600A Units OnlyA distribution cabinet with a Square D I-Line panelboard offers space to p

Options156.7 Network Interface Card (NIC)An OpenComms Network Interface Card (NIC) enables the STS2 to communicate to a network man-agement system (NM

Options166.12 Input Junction Boxes and CablesTwo input power junction boxes and interconnecting cables provide under floor connection for the two inpu

Installation Drawings177.0 INSTALLATION DRAWINGSFigure 5 Outline drawing: 100 – 250 amp STS2GRAVITYSIDE VIEWTOP VIEWBOTTOM ENTRY AREAPOWER CABLE BOTTO

Installation Drawings18Figure 6 Outline drawing: 400 – 600 amp STS2FRONT VIEW SIDE VIEW CONTROL CABLE TOP ENTRY AREACABLE TOP ENTRY AREA EXHAUSTCONT

Installation Drawings19Figure 7 Outline drawing: 800 – 1000 amp STS2BOTTOM POWER CABLE AIR FILTER DO NOT BLOCKAIR INTAKE AREAFRONT VIEWCABINETTOP

Installation Drawings20Figure 8 Outline drawing: 100 – 250amp STS2 with a key lockout switch optionGRAVITYSIDE VIEWTOP VIEWBOTTOM ENTRY AREAPOWER CABL

Installation Drawings21Figure 9 Outline drawing: 400 – 600 amp STS2 with a key lockout switch optionFRONT VIEW SIDE VIEW CONTROL CABLE TOP ENTRY AREAC

iTABLE OF CONTENTSIMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1OVERVI

Installation Drawings22Figure 10 Outline drawing: 800 – 1000 amp STS2 with the key lockout switch optionBOTTOM POWER CABLE AIR FILTER DO NOT BLOCK

Installation Drawings23Figure 11 Seismic anchor drawing: 100 – 250 amp STS2PS211105Rev. 05. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OFFLO

Installation Drawings24Figure 12 Seismic anchor drawing: 400 – 600 amp STS25. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OFFLOOR BRACKET. TA

Installation Drawings25Figure 13 Seismic anchor drawing: 800 – 1000 amp STS25. MOVE CABINET INTO P OSITION W ITH REAR TABS INTO S LOTS OFFLO

Installation Drawings26Figure 14 Electrical field connections drawing: 100 – 250 amp STS2 with single output breakerPS212100Rev. 3FRONT VIEW1. ALL DIM

Installation Drawings27Figure 15 Electrical field connections drawing: 100 – 250 amp STS2 with dual output breakersNEUTRAL BUSSOURCE 1 INPUT Ø BSOURCE

Installation Drawings28Figure 16 Electrical field connections drawing: 400 – 600 amp STS2 with single output breakerPS212400Rev. 2CB1CB4GROUND BUSFRON

Installation Drawings29Figure 17 Electrical field connections drawing: 400 – 600 amp STS2 with dual output breakersPS212401Rev. 2CB1CB4GROUND BUSFRONT

Installation Drawings30Figure 18 Electrical field connections drawing: 800 – 1000 amp STS2 with single output breakerSECTION A-ASIDE VIEW(WITH FRONT P

Installation Drawings31Figure 19 Electrical field connections: 800 – 1000 amp STS2 with dual output breakersPS212801Rev. 2ONE-LINE DIAGRAMSYSTEM OUTPU

ii6.12 Input Junction Boxes and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.13 Seismic Floo

Installation Drawings32Figure 20 Circuit breaker scheduleCIRCUIT BREAKER SCHEDULE100AMP TO 1000AMP STATIC TRANSFER SWITCH 2NOTES:1. THE STS2 AUTOMATIC

Installation Drawings33Figure 21 Control connection location diagram: 100 – 600 amp STS2NOTES:1. TYPICAL OPTIONS ARE SHOWN. FRONT VIEW WITH FRONT DOOR

Installation Drawings34Figure 22 Control connection location diagram: 800 – 1000 amp STS2PROGRAMMABLE RELAY SEE OPTIONLOCATION DETAILBOARD (OPTION

Installation Drawings35Figure 23 Control wiring for remote source selection optionPS213007Rev. 1REMOTE SOURCE SELECTIONSOURCE 1PREFERRED213456SOURCE 2

Installation Drawings36Figure 24 Control wiring for the programmable relay board optionPS213001Rev. 2PROGRAMMABLE RELAY BOARD8. ALL WIRING MUST BE IN

Installation Drawings37Figure 25 Control wiring for the input contact isolator board optionPS213002 Rev. 2 INPUT CONTACT ISOLATOR BOARD8. ALL WIRING M

Installation Drawings38Figure 26 Control wiring for comms board (see Figure 27 on page 39 for internal modem wiring)PS213003Rev. 2COMMS BOARD02-810015

Installation Drawings39Figure 27 Control wiring for the internal modem optionPS213004Rev. 2SEE DETAIL AJ1ACOMMS BOARDMODEM LINE COMMUNICATIONSTO TELEP

Installation Drawings40Figure 28 Control wiring for the network interface card (NIC) optionPS213005REV. 2NETWORK INTERFACECARD (NIC) 416241GXAND LOCAL

Installation Drawings41Figure 29 Control wiring for the RS-232 portFRONT VIEWUPPER HALF OF UNITWITH DOOR OPENEDLCD DISPLAYSEE DETAIL APS213006Rev. 1DE

iii11.2 Event and History Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7211.2.1 E

Installation Drawings42Figure 30 Outline drawing for input junction boxPS211005Rev. 132 [813]F16 3/4 [426]16 [406]16 [406]A100A250A - 600ARATING17 1/2

Installation Drawings43Figure 31 Color LCD touch screen displaySTARTUP PROC. S1 SCR OPENCONFIG S2 SCR OPEN HEATSINK OVERTEMP EQUIPMENT OVERTEMP A

Installation Drawings44Figure 32 LED display(F)(D)(B )(K )(L)(N)(M)5~2~(A) 11(G)~2(I)3A3~(C)(E )(H)4PS211002 Rev. 0LED DISPLAY LEGENDSOURCE 1 WITHIN T

Installation Drawings45Figure 33 Installation drawing, seismic floor stand 100-250AINSTALLATION DRAWING FORSEISMIC FLOOR STAND100-250A STS2 INSTALLATI

Installation Drawings46Figure 34 Installation drawing, seismic floor stand 100-250AFRONTFRONTREARREARFRONTLEVELER FOOTDETAIL C(3 PLACES)CAP SCREW M12-

Installation Drawings47Figure 35 Installation drawing, seismic floor stand 100-250AA2 PLACESDETAIL AREAR UPPER STS2 BRACKETREAR LOWER STS2 BRACKETUPPE

Installation Drawings48Figure 36 Installation drawing, seismic floor stand 100-250ANOTE:SEE DWGS PS215000, PS215001, AND PS215002FOR DETAILS.30.0"

Installation Drawings49Figure 37 Installation drawing, seismic floor stand 400-600AABOTTOM VIEWFRONT VIEWSEEHEIGHTTABLEBINSTALLATION NOTES:1. CHECK AL

Installation Drawings50Figure 38 Installation drawing, seismic floor stand 400-600AFRONTFRONTREARREARFRONTLEVELER FOOTDETAIL C(3 PLACES)CAP SCREW M12-

Installation Drawings51Figure 39 Installation drawing, seismic floor stand 400-600AA2 PLACESDETAIL AREAR UPPER STS2 BRACKETREAR LOWER STS2 BRACKETUPPE

iv15.0 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11015.1 System Con

Installation Drawings52Figure 40 Installation drawing, seismic floor stand 400-600ANOTE:SEE DWGS PS216000, PS216001, AND PS216002FOR DETAILS.38"7

Installation Drawings53Figure 41 Installation drawing, seismic floor stand 800-1000AABTOP VIEWFRONT VIEWBOTTOM VIEWISOMETRIC VIEW 36.9"83.9"

Installation Drawings54Figure 42 Installation drawing, seismic floor stand 800-1000AFRONTFRONTREARREARFRONTLEVELER FOOTDETAIL C(3 PLACES)CAP SCREW M12

Installation Drawings55Figure 43 Installation drawing, seismic floor stand 800-1000ARIGHT REAR UPPER STS2 BRACKETRIGHT REAR LOWER STS2 BRACKETUPPER RE

Installation Drawings56Figure 44 Installation drawing, seismic floor stand 800-1000ANOTE:SEE DWGS PS217000, PS217001, AND PS217002FOR DETAILS.84"

Introduction to STS2 Operations578.0 INTRODUCTION TO STS2 OPERATIONS8.1 System DescriptionA STS2 provides an automatic, seamless transfer between inpu

Introduction to STS2 Operations588.1.2 Reliability and Agency RequirementsThe STS2 is designed for high reliability and high availability with a criti

Introduction to STS2 Operations598.2.4 BypassThe static transfer switch can be manually bypassed to allow the power from a source to directly flow to

Theory of Operation609.0 THEORY OF OPERATION9.1 General DescriptionThe STS2 contains all the equipment necessary to prevent an interruption in power f

Theory of Operation619.1.4 Emergency TransferTo ensure that power remains connected to the load, the STS2 automatically performs an emergency transfer

vFIGURESFigure 1 Recommended derating for high altitude operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Figure 2

Theory of Operation62Hardware• The STS2 operator interface in the Color Graphical Display unit is designed to provide all of the information required

Theory of Operation639.2.4 Logic ModulesThe logic contains three separate redundant logic modules. The modules contain the logic necessary to run the

Operating Instructions for the Touch Screen Interface6410.0 OPERATING INSTRUCTIONS FOR THE TOUCH SCREEN INTERFACEAfter the initial equipment start-up,

Operating Instructions for the Touch Screen Interface6510.1 Normal System Turn-On1. Ensure that all STS2 breakers—CB1, CB2, CB3, CB3A (if supplied), C

Operating Instructions for the Touch Screen Interface6610.2 Manual Transfer / Preferred Source SelectionThe Source Transfer option (Source Xfers) in t

Operating Instructions for the Touch Screen Interface67To manually select the preferred source:1. Verify that the input breakers CB1 and CB2 are close

Operating Instructions for the Touch Screen Interface68Figure 48 Gate board viewing slot locationsIf the Color Graphical Display is not available, you

Operating Instructions for the Touch Screen Interface6910.4.1 Bypass Procedures for Source 1To bypass the switch for Source 1:1. Verify Source 1 is su

Operating Instructions for the Touch Screen Interface7010.4.2 Bypass Procedures for Source 2To bypass the switch for Source 2:1. Verify Source 2 is su

Alarm and Faults7111.0 ALARM AND FAULTSAlarms and faults are events that are triggered when the operation of the static transfer switch falls outside

viFigure 53 Event mask dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Alarm and Faults7211.2 Event and History LogsThe system tracks events through the Events Log and tracks significant events through the History Logs. T

Alarm and Faults73The History Log has the following fields:• Replay Rate — indicates how long it takes for the replay to play. Use the UP and DOWN but

Alarm and Faults7411.4 List of MessagesTable 9 lists available event messages, a definition of the event, and the functions that are activated with th

Alarm and Faults75024 CB2 SHUNT TRIP FAIL CB2 shunt trip failed. D, A, E064 HEATSINK OVERTEMP Heatsink has exceeded the recommended temperature. A, E0

Communication Interfaces7612.0 COMMUNICATION INTERFACESThe STS2 monitoring system offers several choices for communications.The RS-232 terminal port i

Communication Interfaces7712.1.1 Connecting and Using a TerminalAn RS-232 connection can be used to connect the STS2 to either a terminal or a PC runn

Communication Interfaces7812.1.2 Configuring the STS2 via the TerminalThe SPT command is used to configure the systems setpoints. The SVT syntax for t

Communication Interfaces79Value ParameterItem settings, depending on what they are, use various value types. Table 11 provides a list of the possible

Communication Interfaces80Group 3: User Settings1SRC1 Fast Undervoltage Setpoint Integer In % of nominal below nominal2SRC1 Slow Undervoltage Setpo

Communication Interfaces8112.1.3 Setting Bitpacked Options with the TerminalFive sets of options and features settings are available through the termi

1IMPORTANT SAFETY INSTRUCTIONSSave these instructionsThis manual contains important instructions that should be followed during the installation and m

Communication Interfaces82Critical Option Enablingbit0—EnableManual_IPeakResetbit1—EnableAutoRestart bit2 through bit15 - not used (set to 0)Non-Crit

Communication Interfaces83Putting the Terminal Command TogetherFor example, a unit only has the Remote Source Selection and Dual-Output Breaker option

Communication Interfaces84Examples of Event Mask Settings• To latch event #001, S1 SCR SHORT, use SPT 4 1 +L.• To disable event #128, CONFIG MODIFIED,

STS2 Touch Screen Display8513.0 STS2 TOUCH SCREEN DISPLAYThe STS2 can be configured with a Color Graphical LCD touch screen display that allows you to

STS2 Touch Screen Display8613.2 Menu OverviewThe touch screen menu provides access to configuration settings and more device information.The CONFIG (C

STS2 Touch Screen Display8713.2.1 SecurityBecause the STS2 Color Graphical Display provides access to various configuration and monitoring choices, a

STS2 Touch Screen Display8813.3 Mimic DisplayThe Mimic display provides a color diagram of the operation of the STS2. This display imitates the power

STS2 Touch Screen Display89To set the event masks:1. Access the Event Mask dialog box:a. Select CONFIG.b. Select EVENT MASK from the pop-up menu.The E

STS2 Touch Screen Display90Figure 54 User settings dialog boxSource Set PointsThe Source 1/2 Set Points allows you to configure trigger points for eac

STS2 Touch Screen Display91To configure the set points for each source:1. Select SOURCE 1/2 SET POINTS from the User Settings dialog box.The Source 1/