Liebert POWER PROTECTION STATIC TRANSFER SWITCH Bedienungsanleitung

P OWER P ROTECTION S TA TIC T RA N S F E R S WITCH 2 U SER M ANUAL 100-1000 Amp 50-60 Hz[...]

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i T ABLE OF CONTENTS I MPORT AN T S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 O VERVIEW OF M ANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.0 S AFETY P RE CAUTIONS . . . . . . . . . . . . . . . . .[...]

ii 6.12 Input Junction Boxes and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.13 Seismic Floor Anchors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.14 Seismic Floor Stand . . . . . . . . . . . . . . . . . . . . . . . . . [...]

iii 11.2 Event and History Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 11.2.1 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 11.2.2 History Log . . . . . . . . . . . . . . . . . . [...]

iv 15.0 S P ECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 10 15.1 System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 15.1.1 Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

v FIGURES Figure 1 Recommended derating fo r high altitude operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2 Maximum ambient temperature for full load operatio n at higher altitudes . . . . . . . . . . . . . . . . . . 7 Figure 3 Typical static transfer switch on e-line diagram . . . . . . . . . . . . . .[...]

vi Figure 53 Event mask dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Figure 54 User settings dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Figure 55 Source setpoints . . . . . . .[...]

1 I MPORT ANT S AFETY I NSTRUCTIONS Save these instructions This manual co ntains importan t instructions tha t should be followed during the ins tallation an d maintenance of the Liebert St atic Transfer Swi tch 2 (STS2). ! WARNING The unit is supplied by more than one power source. the Unit co nta ins hazardous voltag es if any of the inpu t sour[...]

2 O VERVIEW OF M ANUAL The STS2 Installation, Op eration and Maintenance Manual is organized in a log ical progression so that you can follow the procedures, in the order provided to get your STS2 in stalled and running. Read the entire manual before proceeding w ith the unpacking and installation of the STS2. The major sections are as follows: Imp[...]

Safety Precautions 3 1.0 S AFETY P RECAUTION S Read this manual thoroughly before working with the static transfer switch. Be sure to review the warning under Important Safet y Instructions on page 1 . Refer to the Handling Considerations on page 5 before attempting to move the unit. Under typical operation an d with the doors closed, only normal s[...]

Unpacking and Inspection s 4 2.0 U NP ACKING AND I NSPECTIONS A high-quality installation begi ns on the recei ving dock. The STS2 and its pa ckaging shou ld be inspected when the unit is delive red. If the packaging is not da maged, unp ack the unit and conduct an internal inspect ion before beginning the installa tion process. This section discus[...]

Unpacking and Inspection s 5 2.2.1 Handling Considerations The static switch is bolted to a wooden shipping pall et to allow handling by forklift equipmen t or a pallet jack. Easily Moved — The unit is furnished with integra l castors that allow the unit to be rolled into place after it has reached its location and is removed from the pall et. Ch[...]

Location Cons iderations 6 3.0 L OCATION C ONSIDERATIONS The STS2 should be placed in a cl ean, cool and dry location. The STS2 requires only front access for installation and maintenance. Back or side access is not required. Adequate space is required above the unit for conduit (if configured as such) and cool ing air flow. This section pr ovides [...]

Location Cons iderations 7 3.4 Altitude The standard units are designed for full load operatio n up to 4000 feet (120 0 m) above sea level. See Figure 1 for recommended deratings for altitude s greater than 4000 feet ( 1200 m). Figure 1 Recommended derat ing for high altitude operation Operation at f ull load at a higher al titude can be accommodat[...]

Locating the STS2 8 4.0 L OCATING THE STS2 This section provides instru ctions for leveling the STS2 an d anchoring the unit to the floor, sho uld that be required. For leveling feet details, see Figures 5 through 10 . 4.1 Leveling and Anchoring the Unit to the Floor The STS2 can be anchored to the co ncre te floor to en sure stability fo r the uni[...]

Power and Con trol Wiring 9 5.0 P OWER AND C ONTROL W IRING All power and control wiring should be installed by a qualif ied electrician. All power and con trol wir- ing must comply with the NEC and appli cable loca l codes. Unless otherwise labeled, use the recom- mended tightening to rque as shown in Table 25 - Torque tightening. The busbars are [...]

Power and Con trol Wiring 10 The input and output po wer wire size shoul d be ba sed on the upstream overcu rrent protection device, observing the NEC and local codes. The molded case switches containe d in the STS2 are typically non- automatic circuit breakers that rely on the upstream and/or load overcurrent protection. Upstream overcurrent prote[...]

Power and Con trol Wiring 11 5.3 System Grounding Equipment grounding — Grounding i s primarily f or equipment an d personnel sa fety, although proper g rounding also e nhanc es equipment performance. All input and o utput powe r feeds must inclu de an equipme nt grounding m eans as requir ed by the NEC and local codes. An insulated eq uipment gr[...]

Power and Con trol Wiring 12 5.5 Remote Source Selection Wiring An optional Remote Source Selectio n board may be installed in your STS2. Thi s board is installed in the same bay as the commu nications options. See Figures 21 and 22 for the location of these options. See Figure 23 for information on the control wiring for the Remote Source Selectio[...]

Options 13 6.0 O PTIONS This section discusses th e options available for th e STS2. The co mmunication s options are also di s- cussed in 12.0 - Communication Interfaces . 6.1 Programmable Relay Board The Programmable Relay Board (PRB) provides a means to trigger an extern al device when an event occurs in the STS2. Each PRB ha s 8 channels. Each [...]

Options 14 6.3 Distribution Cabinet With I-Li ne Panelboard—100-600A Unit s Only A distribution cabin et with a Square D I-Line panelbo ard offers space to plug in up to 10 three-pole branch circuit breakers (100A-250A). The panel board is rated at 600A with an overall short-circuit rating of 100,000 AIC. The full-heigh t cabinet mounts on either[...]

Options 15 6.7 Network Interface Card (NIC) An OpenComms Network Interface Card (NIC) enab les the STS2 to communicate to a network man- agement system (NMS). The NIC provides the inte rnal hardware and softwa re to communicate, via SNMP, to any I.P.-based Ethernet network throug h an RJ-45 connector using Category 5 cabling. The NIC provides redun[...]

Options 16 6.12 Input Junction Boxes and Cables Two input power junction boxes and interconnecting cables provide under floo r connection for the two input power feeds. Power terminal blocks are provid ed in each junction box for the connection of the input power conductors and a parity-sized ground conductor. T he junction boxes are NEMA 1 enclo- [...]

Installation Drawings 17 7.0 I NST ALLATION D RA WINGS Figure 5 Outline drawing: 100 – 250 amp ST S2 GRAVITY SIDE VIEW TOP VIEW BOTTOM ENTRY AREA POWER CABLE BOTTOM ENTRY AREA CONTROL CABLE BOTTOM VIEW FRONT VIEW EXHAUST TOP ENTRY AREA TOP ENTRY AREA POWER CABLE CONTROL CABLE FRONT FRONT MAX. DOOR SWING 180° CENTER GRAVITY CENTER SEE DETAIL A CE[...]

Installation Drawings 18 Figure 6 Outline drawing: 400 – 600 amp ST S2 FRONT VIEW SIDE VIEW CONTROL CABLE TOP ENTRY AREA CABLE TOP ENTRY AREA EXHAUST CONTROL CABLE BOTTOM ENTRY AREA POWER CABLE BOTTOM ENTRY BOTTOM VIEW TOP VIEW GRAVITY FRONT FRONT MAX. DOOR SWING 180° (TYP) CENTER GRAVITY CENTER SEE DETAIL A A R E A CENTERS 12MM CASTER CENTERS A[...]

Installation Drawings 19 Figure 7 Outline drawing: 800 – 1000 amp STS2 BOTTOM POWER CABLE AIR FILTER DO NOT BLOCK AIR INTAKE AREA FRONT VIEW CABINET TOP ENTRY AREA CONTROL CABLE TOP ENTRY AREA POWER CABLE (TYP ) SIDE VIEW TOP VIEW BOTTOM VIEW SEE DETAIL A FRONT FRONT AIR EXHAUST GRAVITY CENTER MAX. DOOR SWING 180° (TYP) CONTROL CABLE BOTTOM ENTR[...]

Installation Drawings 20 Figure 8 Outline drawing: 100 – 250amp STS2 with a key lockout swit ch option GRAVITY SIDE VIEW TOP VIEW BOTTOM ENTRY AREA POWER CABLE BOTTOM ENTRY AREA CONTROL CABLE BOTTOM VIEW FRONT VIEW EXHAUST TOP ENTRY AREA TOP ENTRY AREA POWER CABLE CONTROL CABLE FRONT FRONT MAX. DOOR SWING 180° CENTER GRAVITY CENTER SEE DETAIL A [...]

Installation Drawings 21 Figure 9 Outline drawing: 400 – 600 amp STS2 with a k ey lockout switch option FRONT VIEW SIDE VIEW CONTROL CABLE TOP ENTRY AREA CABLE TOP ENTRY AREA EXHAUST CONTROL CABLE BOTTOM ENTRY AREA POWER CABLE BOTTOM ENTRY BOTTOM VIEW TOP VIEW GRAVITY FRONT FRONT MAX. DOOR SWING 180° (TYP) CENTER GRAVITY CENTER SEE DETAIL A A R [...]

Installation Drawings 22 Figure 10 Outline drawing: 800 – 1000 amp STS2 with the key lockout switch option BOTTOM POWER CABLE AIR FILTER DO NOT BLOCK AIR INTAKE AREA FRONT VIEW CABINET TOP ENTRY AREA CONTROL CABLE TOP ENTRY AREA POWER CABLE (TYP) SIDE VIEW TOP VIEW BOTTOM VIEW SEE DETAIL A FRONT FRONT AIR EXHAUST GRAVITY CENTER MAX. DOOR SWING 18[...]

Installation Drawings 23 Figure 1 1 Seismic anchor drawing: 10 0 – 250 amp STS2 PS211105 Rev. 0 5. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OF FLOOR BRACKET. TABS TO EXTEND AT LEAST 1/2" THROUGH FLOOR BRACKET (FIG. 2). THEN ATTACH FRONT FLOOR BRACKETS TO FRONT CABINET BASE BRACKET BUT DO NOT FULLY TIGHTEN HARDWARE. 6. MARK HOLE L[...]

Installation Drawings 24 Figure 12 Seismic anchor drawing: 40 0 – 600 amp STS2 5. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OF FLOOR BRACKET. TABS TO EXTEND AT LEAST 1/2" THROUGH FLOOR BRACKET (FIG. 2). THEN ATTACH FRONT FLOOR BRACKETS TO FRONT CABINET BASE BRACKET BUT DO NOT FULLY TIGHTEN HARDWARE. 6. MARK HOLE LOCATIONS AND REMO[...]

Installation Drawings 25 Figure 13 Seismic anchor drawing: 80 0 – 1000 amp STS2 5. MOVE CABINET INTO P OSITION W ITH REAR TABS INTO S LOTS OF FLOOR BRACKET. TABS TO EXTEND AT LEAST 1/2" THROUGH FLOOR BRACKET (FIG. 2). THEN ATTACH FRONT FLOOR BRACKETS TO FRONT CABINET BASE BRACKET BUT DO N OT FULLY T IGHTEN HARDWARE. 6. MARK HOLE LOCATIONS AN[...]

Installation Drawings 26 Figure 14 Electrical field connect ions drawing: 100 – 250 amp STS2 with single output breake r PS212100 Rev. 3 FRONT VIEW 1. ALL DIMENSIONS ARE IN INCHES AND (MILLIMETERS). NOTES: (WITH FRONT PANELS REMOVED) SECTION A-A NEUTRAL BUS SOURCE 1 INPUT Ø B SOURCE 1 INPUT Ø C CB4 SIDE VIEW ONE-LINE DIAGRAM K3 K2 CB3 CB4 SYSTE[...]

Installation Drawings 27 Figure 15 Electrical field connect ions drawing: 100 – 250 amp STS2 with dual output breakers NEUTRAL BUS SOURCE 1 INPUT Ø B SOURCE 1 INPUT Ø C CB4 .51 DIA. GROUND BUS FRONT VIEW PEM NUT RIGHT SIDE VIEW NEUTRAL BUS PEM NUT RIGHT SIDE VIEW INPUT/OUTPUT BUS GROUND BUS SOURCE 1 INPUT Ø A, Ø B, Ø C SOURCE 2 INPUT Ø A, ?[...]

Installation Drawings 28 Figure 16 Electrical field connect ions drawing: 400 – 600 amp STS2 with single output breake r PS212400 Rev. 2 CB1 CB4 GROUND BUS FRONT VIEW RIGHT SIDE VIEW NEUTRAL BUS BUS GROUND PEM NUT RIGHT SIDE VIEW INPUT/OUTPUT BUS .51 DIA. NEUTRAL BUS CB3 CB5 CB2 (WITH FRONT PANELS REMOVED) FRONT VIEW SYSTEM OUTPUT Ø A, Ø B, Ø [...]

Installation Drawings 29 Figure 17 Electrical field connect ions drawing: 400 – 600 amp STS2 with dual output breakers PS212401 Rev. 2 CB1 CB4 GROUND BUS FRONT VIEW RIGHT SIDE VIEW NEUTRAL BUS BUS GROUND PEM NUT RIGHT SIDE VIEW INPUT/OUTPUT BUS .51 DIA. NEUTRAL BUS CB3 CB5 CB2 (WITH FRONT PANELS REMOVED) FRONT VIEW SYSTEM OUTPUT Ø A, Ø B, Ø C [...]

Installation Drawings 30 Figure 18 Electrical field conne ctions drawing: 800 – 1000 amp STS2 with sin gle output breaker SECTION A-A SIDE VIEW (WITH FRONT PANELS REMOVED) FRONT VIEW FRONT VIEW GROUND BUS .51 DIA. NEUTRAL BUS RIGHT SIDE VIEW .51 DIA. INPUT/OUTPUT BUS RIGHT SIDE VIEW NEUTRAL BUS GROUND BUS Ø A, Ø B, Ø C SYSTEM OUTPUT Ø A, Ø B[...]

Installation Drawings 31 Figure 19 Electrical fie ld connections: 8 00 – 1000 amp STS2 with dual output bre akers PS212801 Rev. 2 ONE-LINE DIAGRAM SYSTEM OUTPUT SOURCE 1 CB4 K2 K3 K1 CB1 CB5 K2 K1 K3 SOURCE 2 CB2 CB3A CB3 FRONT VIEW (WITH FRONT PANELS REMOVED) SIDE VIEW SECTION A-A NOT RECOMMENDED. NOTES: 1. ALL DIMENSIONS ARE IN INCHES AND (MILL[...]

Installation Drawings 32 Figure 20 Circuit breaker schedule CIRCUIT BREAKER SCHEDULE 100AMP TO 1000AMP STATIC TRANSFER SWITCH 2 NOTES: 1. THE STS2 AUTOMATIC MOLDED CASE BREAKERS ARE 3 POLE, 600VAC RATED WITH MAGNETIC TRIP ONLY. 2. UPSTREAM DEVICES (BY OTHERS) MUST BE USED TO PROVIDE OVERCURRENT PROTECTION. UPSTREAM OVERCURRENT PROTECTION SHOULD HAV[...]

Installation Drawings 33 Figure 21 Control connection location diagr am: 100 – 600 amp STS2 NOTES: 1. TYPICAL OPTIONS ARE SHOWN. FRONT VIEW WITH FRONT DOOR REMOVED CONTROL WIRING COMMS BOARD FOR SITESCAN, INPUT CONTACT ISOLATOR BOARD PROGRAMMABLE RELAY SEE OPTION OPTION LOCATION DETAIL LOCATION DETAIL BOARD (OPTION) SEE NOTE 2 (OPTION) OR PROGRAM[...]

Installation Drawings 34 Figure 22 Control connection location diagr am: 800 – 1000 amp STS2 PROGRAMMABLE RELAY SEE OPTION LOCATION DETAIL BOARD (OPTION) SEE NOTE 2 MODEM INTERFACE (OPTION) NETWORK INTERFACE CARD (NIC) (OPTION) EXTERNAL AND INTERNAL COMMS BOARD FOR SITESCAN, FRONT VIEW WITH FRONT DOOR REMOVED CONTROL WIRING PS213800 Rev. 1 OPTION[...]

Installation Drawings 35 Figure 23 Control wiring for remote source select ion option PS213007 Rev. 1 REMOTE SOURCE SELECTION SOURCE 1 PREFERRED 2 13 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 CONNECTION [...]

Installation Drawings 36 Figure 24 Control wiring for the programmable relay board option PS213001 Rev. 2 PROGRAMMABLE RELAY BOARD 8. ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL (C=COMMON, NC=NORMALLY CLOSED, NO=NORMALLY OPENED) #16AWG FLEXIBLE STRANDED CABLE. 7. MAXIMUM CABLE LENGTH 500 FT. (152 METERS) WITH 6. CONTACT RATINGS: 1AMP @ 30VDC, 20[...]

Installation Drawings 37 Figure 25 Control wiring for the i nput cont act isolator board option PS213002 Rev. 2 INPUT CONTACT ISOLATOR BOARD 8. ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL DIAGRAM FOR LOCATION OF INPUT CONTACT ISOLATOR BD. OPT. 5. REFER TO STATIC TRANSFER SWITCH CONTROL CONNECTION SEPARATE FROM POWER WIRING. CONTROL WIRING RUNS 4[...]

Installation Drawings 38 Figure 26 Control wiring for comms board (see Figure 27 on p age 39 for internal modem wiring) PS213003 Rev. 2 COMMS BOARD 02-810015-XX TB51 TB55 TB56 J81 EXTERNAL MODEM SEE DETAIL A SITESCAN SEE DETAIL B NO CUSTOMER CONNECTION NO CUSTOMER CONNECTION DETAIL B TB55 SEE NOTES 1 & 2 CUSTOMER SUPPLIED INTERCONNECTING CABLE [...]

Installation Drawings 39 Figure 27 Control wiring for the internal modem option PS213004 Rev. 2 SEE DETAIL A J1A COMMS BOARD MODEM LINE COMMUNICATIONS TO TELEPHONE LINE DETAIL A CUSTOMER SUPPLIED INTERCONNECTING CABLE (SEE NOTES) J1A MANUAL FOR CONFIGURING THE INTERNAL MODEM OPTION. 5. REFER TO CONTROL CONNECTION LOCATION DIAGRAM OF SEPARATE FROM P[...]

Installation Drawings 40 Figure 28 Control wiring for the ne twork interfac e card (NIC) option PS213005 REV. 2 NETWORK INTERFACE CARD (NIC) 416241GX AND LOCAL ELECTRICAL CODES. LIMITED BY INTERNET STANDARDS. 6. ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL OF STATIC TRANSFER SWITCH FOR LOCATION OF NETWOR K 5. REFER TO CONTROL CONNECTION LOCATION [...]

Installation Drawings 41 Figure 29 Control wiring for the RS-232 port FRONT VIEW UPPER HALF OF UNIT WITH DOOR OPENED LCD DISPLAY SEE DETAIL A PS213006 Rev. 1 DETAIL A RXD DB9 CONNECTOR TXD GND NOTES: 1. RS-232 COMMUNICATION THROUGH DB9 CONNECTOR. 2. CONNECTOR ACCESSIBLE WITH FRONT DOOR OPENED. CONNECTOR MUST BE REMOVED PRIOR TO CLOSING DOOR. 4 9 2 [...]

Installation Drawings 42 Figure 30 Outline drawing for input junction box PS211005 Rev. 1 32 [813] F 16 3/4 [426] 16 [406] 16 [406] A 100A 250A - 600A RATING 17 1/2 [445] DIMENSIONAL DATA - INCHES [mm] BC 14 [356] 30 [762] 6 [152] 6 [152] DE 12 [305] 10 [254] 33 [830] INPUT JUNCTION BOX (2) #6 AWG TO (2) 500 kcmil GH 5/16 [8] 7/16 [11] 1 [25] 3 [76[...]

Installation Drawings 43 Figure 31 Color LCD touch screen display STARTUP PROC. S1 SCR OPEN CONFIG S2 SCR OPEN HEATSINK OVERTEMP EQUIPMENT OVERTEMP AMBIENT OVERTEMP EVENT DISPLAY LOGS SOURCE XFERS RESET SI SCR SHORT S2 SCR SHORT ALARM CONTROLS MIMIC CB 2 SILENCE ALTERNATE -30 S OU RC E 2 A-B B-C C-A 195V 195V 195V 0A 0A 0 A 0 . 0 H Z CB 1 PREFERRED[...]

Installation Drawings 44 Figure 32 LED display (F ) (D) (B ) (K ) (L ) (N) (M) 5 ~ 2 ~ (A ) 1 1 (G ) ~ 2 (I) 3A 3 ~ (C ) (E ) (H) 4 PS211002 Rev. 0 LED D I S PLAY LE GEN D SOURCE 1 WITHIN TOLERANCE PUSHBUTTON TO SELECT SOURCE 1 AS THE PREFERED SOURCE SYMBOL TO INDICATE THE K AND M MUST BE PUSHED AT THE SAME TIME TO RESET ALARM ALARM RESET PUSHBUTTO[...]

Installation Drawings 45 Figure 33 Inst allation drawing, se ismic floor st and 100-250A INSTALLATION DRAWING FOR SEISMIC FLOOR STAND 100-250A STS2 INSTALLATION NOTES: 1. CHECK ALL HARDWARE FOR PROPER TORQUE PRIOR TO INSTALLATION. 2. INSTALL REAR LOWER STS2 BRACKET TO THE FLOOR STAND USING EXISTING HOLES WITH BENT FLANGE FACING THE FRONT OF THE FLO[...]

Installation Drawings 46 Figure 34 Inst allation drawing, se ismic floor st and 100-250A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) CA[...]

Installation Drawings 47 Figure 35 Inst allation drawing, se ismic floor st and 100-250A A 2 P L A C ES DETAIL A REAR UPPER STS2 BRACKET REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES) CAP SCREW M12-1.75X40MM SPLIT LOCK WASHER M[...]

Installation Drawings 48 Figure 36 Inst allation drawing, se ismic floor st and 100-250A NOTE: SEE DWGS PS215000, PS215001, AND PS215002 FOR DETAILS. 30.0" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW PS215003 Rev . 0[...]

Installation Drawings 49 Figure 37 Inst allation drawing, se ismic floor st and 400-600A A BOTTOM VIEW FRONT VIEW SEE HEIGHT TABLE B INSTALLATION NOTES: 1. CHECK ALL HARDWARE FOR PROPER TORQUE PRIOR TO INSTALLATION. 2. INSTALL REAR LOWER STS2 BRACKET TO THE FLOOR STAND USING EXISTING HOLES WITH BENT FLANGE FACING THE FRONT OF THE FLOOR STAND (FIG. [...]

Installation Drawings 50 Figure 38 Inst allation drawing, se ismic floor st and 400-600A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) CA[...]

Installation Drawings 51 Figure 39 Inst allation drawing, se ismic floor st and 400-600A A 2 P L A C ES DETAIL A REAR UPPER STS2 BRACKET REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES) CAP SCREW M12-1.75X40MM SPLIT LOCK WASHER M[...]

Installation Drawings 52 Figure 40 Inst allation drawing, se ismic floor st and 400-600A NOTE: SEE DWGS PS216000, PS216001, AND PS216002 FOR DETAILS. 38" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW PS216003 Rev . 0[...]

Installation Drawings 53 Figure 41 Inst allation drawing, se ismic floor st and 800-1000A A B TOP VIEW FRONT VIEW BOTTOM VIEW ISOMETRIC VIEW 36.9" 83.9" SEE HEIGHT TABLE 2 9.44" TYP. 2.47" TYP. 71.55" TYP. 2.47" TYP MOUNTING PLATE ALIGN FOOT PARALLEL TO MOUNTING PLATE AS SHOWN FOOT DETAIL A FOOT DETAIL B RIGHT SIDE VIE[...]

Installation Drawings 54 Figure 42 Inst allation drawing, se ismic floor st and 800-1000A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) C[...]

Installation Drawings 55 Figure 43 Inst allation drawing, se ismic floor st and 800-1000A RIGHT REAR UPPER STS2 BRACKET RIGHT REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES) CAP SCREW M12-1.75X40MM SPLIT LOCK WASHER M12 FLAT WAS[...]

Installation Drawings 56 Figure 44 Inst allation drawing, se ismic floor st and 800-1000A NOTE: SEE DWGS PS217000, PS217001, AND PS217002 FOR DETAILS. 84" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW 32" 52" PS217003 Rev . 0[...]

Introduction to STS2 Operations 57 8.0 I NTRODUCTION TO STS2 O PERATIONS 8.1 System Description A STS2 provides an automatic, seamless transfer between input power sources t o a n o ut p u t l o a d . T h e STS2 monitors the input sou rces, to ensure each source is operat ing within set parameters, as well as ensure that each source is with in acce[...]

Introduction to STS2 Operations 58 8.1.2 Reliability and Agency Requirement s The STS2 is designed for h igh reliability and high availabili ty with a critical bus Mean Time Between Failure (MTBF) exceeding 1, 000,000 hour s. The STS2, Control/Power Module, and all its options are designed, tested and certified, where appli- cable, to meet agency r[...]

Introduction to STS2 Operations 59 8.2.4 Byp ass The static transfer switch can be manual ly bypassed to allow the power from a so urce to directly flow to the output load. This bypass allows the unit’s el ectronics to be serviced without dangerous voltages being present. The STS2 includes key-int erlocked maintenance bypass breakers that allow e[...]

Theory of Operati on 60 9.0 T HEORY OF O PERATION 9.1 General Description The STS2 contains all the equipment necessary to prev ent an interruption in power flow to the AC load, shoul d your primary source fail . 9.1.1 STS2 St atic T ransfer Switch The STS2 is a 3 pole, d ouble-throw, solid state automa tic transfer switch that is fed from two sour[...]

Theory of Operati on 61 9.1.4 Emergency T ransfer To ensure that power remains connected to the lo ad, the STS2 automaticall y performs an em ergency transfer from one input source to the other wh en an outage occurs on the existing source. The auto- matic transfer takes place if the other source’s vo ltage is within acceptabl e limits, and regar[...]

Theory of Operati on 62 Hardware • The STS2 operator interface in the Color Graphical Display unit is de signed to provide all of the information required to configur e and monitor the unit’s operation. • The control logic performs automatic oper ations with minimal operator interface. • Each STS2 uni t is equipped w ith either a colo r LCD[...]

Theory of Operati on 63 9.2.4 Logic Modules The logic contains three separate redundant logic modules. The modu les contain the logic necessary to run the STS2 and control transfers a nd shunt trips under all circumstances, without any outside assistance once set-up and started properl y. 9.2.5 Audible Alarm An audible a larm is instal led on the c[...]

Operating Instructions for the Touch Screen Interface 64 10.0 O PERATING I NSTRUCTIONS FOR THE T OUCH S CRE EN I NTERFACE After the initial equipment start- up, the following operating guidel ines can be used for standard equipment operation. These guidelin es should be reviewed for any special equipment modifications, special site conditions, or c[...]

Operating Instructions for the Touch Screen Interface 65 10.1 Normal System T urn-On 1. Ensure that all STS2 breakers—CB1, CB2, CB 3, CB3A ( if supplied), CB4, and CB5—are in the OFF position. a. Ensure that the key interlocks for CB 1 and CB2 have their bolts retracted. b. Ensure that the key interlocks fo r CB4 and CB5 have their bolts extend[...]

Operating Instructions for the Touch Screen Interface 66 10.2 Manual T ransfer / Pref erred Source Selection The Source Transfer option (Source Xfers) in the touch screen menu allows you to select a preferred source. Transfers are only permitted wh en the volt age and current are within their proper operati ng range and the sources are synchron ize[...]

Operating Instructions for the Touch Screen Interface 67 To manually select the preferred source : 1. Verify that the in put breakers C B1 and CB2 are closed. 2. Select SOURCE XFERS from the menu bar. The Select Preferred Source screen is displa yed in the Ev ent Display. 3. Check the Mimic to verify that Source 1 and Source 2 input voltages are co[...]

Operating Instructions for the Touch Screen Interface 68 Figure 48 Gate board viewing slot lo cations If the Color Graphical Display is not available, you can still use the following bypass procedures, ignore the steps to check the display , and check the LEDs . If your system contains the LED display, see 14.2.3 - Maintenance Bypass . GREEN LEDS O[...]

Operating Instructions for the Touch Screen Interface 69 10.4.1 Bypass Procedures for Source 1 To bypass the swit ch for Source 1: 1. Verify Source 1 is supplying power via the Mimic. • If the Color Gr aphical Disp lay is not av ailable, check the gate drive r board LEDs through the slots in the control pan el. See Figure 48 . 2. Remove interlock[...]

Operating Instructions for the Touch Screen Interface 70 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 Gr aphical Disp lay is not av ailable, check the gate drive r board LEDs through the slots in the control pan el. See Figure 48 . 2. Remove the interl[...]

Alarm and Faults 71 11 . 0 A LARM AND F AULT S Alarms and faults are events that are triggered when the operation o f the stat ic transfer switch falls outside of the defined para meters. These events can also be trigg ered by: user actions, such as chang- ing configurations, clearing logs, etc. ; fail ed components suc h as a fan failure, an SCR t[...]

Alarm and Faults 72 1 1.2 Event and History Logs The system tracks events through the Events Log and tracks significant ev ents through the History Logs. These logs allow you to quickly spot trends or diagnose problems that the unit ma y have had. Both logs are written in nonvolatile memory. The logs can be accessed from the touch s creen menu or t[...]

Alarm and Faults 73 The History Log has the following fiel ds: • Replay Rate — indicates how l ong it take s for the replay to play. Use the UP and DOWN buttons to set the time. • Status — the status of the STS2 at the point of th e current frame in the replay. The History log has three statuses: Fr ozen , Not Frozen and Retrieving Data, pl[...]

Alarm and Faults 74 1 1.4 List of Messages Table 9 lists available event mes sages, a definition of the event, and the functi ons that are activated with the event by default. The fu nctions are indicated as follows: D — The indicated event initiates the Auto-Dial sequence through the optional modem. A — The indicated ev ent activates the Audib[...]

Alarm and Faults 75 024 CB2 SHUNT TRIP FAIL CB2 sh unt trip failed. D, A, E 064 HEATSINK OVERTEMP Heatsink has exce eded the recommended temperature. A, E 067 S1 UV Source 1 under voltage, fast detection. A, E 068 S1 UV (RMS) Source 1 under voltage, slow detection. L , A, E 069 S1 OV Source 1 over voltage A, E 070 S1 OF/UF Source 1 over frequency/u[...]

Communication Interfaces 76 12.0 C OMMUNICATION I NTERFACES The STS2 monitoring sy stem offers several ch oices for communications. The RS-232 te rminal port is standard on a ll units. Th e port is located inside the front door, to the left of the touch screen/LED front panel mounting as shown in Figure 29 . This port is primarily used as an altern[...]

Communication Interfaces 77 12.1.1 Connecting and Using a T erminal An RS-232 connection can be used to connect the STS2 to eithe r a termin al or a PC run ning te rminal emulation software. If y ou are unsure of the cable pin out, see 15.2.10 - Terminal Port Connec- tions . 1. Connect the terminal to the STS2 by plugging the cable from the termina[...]

Communication Interfaces 78 12.1.2 Configuring the STS2 via the T erminal The SPT command is used to configure the systems setpoints. The SVT syntax for the setpoints con- sists for four parameters: SPT [ group ] [ item ] [ value ] where the parameters are: • SPT — is the terminal command that is used to configure setpoints. • group — the g[...]

Communication Interfaces 79 Va l u e P a r a m e t e r Item settings, depending on what they are, use v arious value types. Table 11 provides a list of the possible value types and their description. Table 12 shows the variou s groups, the settings contai ned within, and the ty pe of value it requires. Ta b l e 1 1 Va l u e t y p e s Type Definitio[...]

Communication Interfaces 80 Group 3: User Settings 1 SRC1 Fast Undervoltage Setpoint Integer In % of nominal below nominal 2 SRC1 Slow Undervoltage Setpoint Integer In % of nominal below nominal 3 SRC1 Slow Undervoltage Detect Delay Integer In number of lines cycles 4 SRC1 Overvoltage Setpoint Integer In % of nominal above nominal 5 SRC1 Overvoltag[...]

Communication Interfaces 81 12.1.3 Setting Bitpacke d Options with the T erminal Five sets of options and features settings are available th rough the terminal to control the system operation. Under System Settings for the SPT command, th ese i tems denote which options are INSTALLED: • 6 — Options_1 • 14 — Comms Options 1 • 15 — Comms [...]

Communication Interfaces 82 Critical Option Enabling bit0—EnableManual_IPeakReset bit1—EnableAutoRestart bit2 through bit15 - not used (set to 0) Non-Critical Optio n Enab bit0 — EnableAutoReXfer bit1 through bi t15 — no t used (set to 0) The bits are set in reverse orde r, from bit 15 on th e left to bit 0 (zero) on the right. The bits are[...]

Communication Interfaces 83 Putting the T erminal Command T ogether For example, a unit only has the Remote Source Se lection and Dual-Output Breaker options instal led. Checking the bits list under Options_1 on page 81 , bits 7 and 0 each must be set to 1 to indicate that these option s are installed. The bit setting is as follows, starting with b[...]

Communication Interfaces 84 Examples of Event Mask Settings • To latch event #001, S1 SCR SHORT, use SPT 4 1 +L. • To disable event #128, CONFIG MODIFIED, from sounding the horn, use SPT 4 100 -A. • To enable event #012, OUT VOLT SENSE FAIL, to Dial and go into the Event Log, use SPT 4 12 +D+E. • To disable all masks for event #120 , INPUT [...]

STS2 T ouch Screen Display 85 13.0 STS2 T OUCH S CREEN D ISPLAY The STS2 can be configured with a Color Graphica l LCD touch screen display that allows you to quickly check the status of t he unit and id entify prob lems. A touch screen LCD is available through the front of the STS2. This screen provides a graphical (Mimic) displ ay of the switch?[...]

STS2 T ouch Screen Display 86 13.2 Menu Overview The touch screen menu provides access to config uration settings and more device information. The CONFIG (Configuration) and LOGS m enus provid e multiple choices thro ugh pop-up menu s. The SOURCE XFER menu selection allo ws you to select the preferred source. The other menu choices pro- vide inform[...]

STS2 T ouch Screen Display 87 13.2.1 Security Because the STS2 Color Graphical Display provides access to vari ous configuration and monitoring choices, a password or ke y lockout switch may be used to protec t access to certain changes, including: • Change configuration settings. •C l e a r l o g s . • Make a source transfer. • Reset an al[...]

STS2 T ouch Screen Display 88 13.3 Mimic Display The Mimic display provides a color diagram of the operati on of the STS2. This display imitates the power flow through the static tran sfer switch and indicates source status, breaker status, switch sta- tus, source voltage and current readings, output power measurements, and active al arm messages. [...]

STS2 T ouch Screen Display 89 To set the event masks: 1. Access the Event Mask dialog box: a. Select CONFIG. b. Select EVENT MASK f rom the pop-up menu. The Event Mask dialog box is displayed. See Figure 53 . 2. Select the mask settings for each fault and alarm. a. Select YES to enable the setting, – or – b. Select NO to disable the setting. 3.[...]

STS2 T ouch Screen Display 90 Figure 54 User settings dial og box Source Set Point s The Source 1/2 Set Points allows you to configure trig ger points for each input source (1 or 2) for the STS2 via a keypad dialog or HI/LO dialog box. The source numbers do not desi gnate the source as the preferred or alternate sou rce. The numbers simply iden tif[...]

STS2 T ouch Screen Display 91 To configure the set points for each source: 1. Select SOURCE 1/2 SET POINTS fr om the User Settings dialo g box. The Source 1/2 Set Points dialog is displayed. Figure 55 Source setpoint s 2. Select 1 to configure the settings for Source 1. 3. Configure the settings usi ng the keyp ad or dialog box that is displayed w [...]

STS2 T ouch Screen Display 92 8. Select FREQUENCY TRIP POINT. A keypad i s displayed. This choice verifie s that the source is running at the proper frequency. This choice sets the fre- quency devia tion in the frequency that tri ggers the frequency trip poin t alarm. The freq uency deviation setting is the allowa ble frequency variat ion from nomi[...]

STS2 T ouch Screen Display 93 System Settings The System Settings choice under the Config menu displays another pop-up menu with three choices: • Comm Options • System Options • System ID To access the System Settings menu: 1. Select CONFIG from the menu bar. 2. Select SYSTEM SETTINGS from the Co nfig menu. Comm Options The Comm Options dialo[...]

STS2 T ouch Screen Display 94 Configuring the Modem The Modem dialog box allows you to configu re the optional, internal modem or an external modem that is connected to the static transfer switch . Only one modem can be utilized by the STS2. The dialog box contains a series of choices that access eith er a keypad or a secon dary dialog to config- u[...]

STS2 T ouch Screen Display 95 9. Select INIT. STRING to config ure the initialization string. This string configures th e parameters of the modem. • This setting only needs to be configured if an external modem is used. Check your modem’s documentatio n for this setting. • The string for the internal modem set by the manufacturer and does not[...]

STS2 T ouch Screen Display 96 The delay allows you to se t the number of seconds which a condition needs to persist to trigger an alarm. These input alarms can also be configured to ac tivate a programmable re lay output, which is dis- cussed in Configuring the Programmable Relay Board Settings on page 97 . To configure the Input Co ntact Isolator [...]

STS2 T ouch Screen Display 97 Configuring the Programmable Relay Board Settings The STS2 can contain up to two Programmable Re lay Boards (PRB) that can trigger an external device when an event occurs in the static transfer switch. For example, if Source 1 fails, an external light flashes. See 6.1 - Programmable Relay Bo ard for more information on[...]

STS2 T ouch Screen Display 98 Figure 59 Programmable relay board dialog box 2. Select your configuration set tings. • Select STANDARD SET to use the settings co nfigured at the factory. See Go to step 4 . • Select USER DEFINED SET to configur e your own settings. Go to step 3 . If you enter a user defined setting s, this information is not save[...]

STS2 T ouch Screen Display 99 SiteScan Configuration An optional RS-422 port, contai ned in the Comms Boar d, can be installe d in the static transf er switch to provide communications wi th Liebert’s SiteScan. SiteScan is Liebert’s system monitoring software that allows you to utilize a PC to monitor the stat ic transfer switch’s status and [...]

STS2 T ouch Screen Display 100 4 Pole T ransfer Switch This selection is set at the factory to indicate whether the system is a 3 pole or 4 pole unit. Shunt This selection is se t at the factory. Wye Output T ransformer The Wye Output Transformer controls the firing of the SCRs on star tup, which minimizes the inrush into PDU transformers. Output b[...]

STS2 T ouch Screen Display 101 13.6.2 Logs Two types of logs are kept by the STS2: Event Lo g and History Log. Event Log The Event Log tracks the alarms and faults of the STS2. See 11.0 - Alarm and Faults for more information on these events and see 11.2. 1 - Event Log for more information on the Event Log and definiti ons of the fields di splayed [...]

STS2 T ouch Screen Display 102 To use the History Log: 1. Select LOGS from the menu bar to open the Logs menu. 2. Select either HISTORY LOG 1 or HISTORY LOG 2 from the menu. 3. Select the appropriate but tons to replay the log: • Select PREV to go to the prev ious frame in the sequence. • Select NEXT to go to the next frame in the sequence. •[...]

Operating the LED Display STS2 103 14.0 O PERATING THE LED D ISPLAY STS2 Certain models of t he STS2 do not include the LC D Color Graphical Display with the touch screen interface. This d isplay is repl aced by an LED fr ont panel to allow you to monitor the unit and alert you when a problem occurs. The LE D panel can be repl aced with the Color G[...]

Operating the LED Display STS2 104 14.1.2 LED and push button description The following table defines the LEDs and pushbuttons in the LED displa y: T able 16 LED and push button description Symbol LED Description Action A Green Source 1 power is present A green LED is lit if the Source 1 input power is present. This LED only indicates that power is[...]

Operating the LED Display STS2 105 14.1.3 Event Controls When an alarm is trigge red, a red LED is lit in th e control panel. A pair of buttons allows you to turn off the horn and reset the alarm. 14.1.4 Key Lockout Switch An optional key lockout switch for the STS2 enables or disa bles all push button input s, except for the alarm silence but ton.[...]

Operating the LED Display STS2 106 6. Verify that the preferred source LED (green) (LED_PREF x ) is lit for the source that you want th e switch to be using. 7. Verify that the gree n LED for the corresponding SCR (STS1 or STS2) is lit, indicating that the SCR is closed. 8. Close Output Breaker CB3 (and CB3A in a redundant output confi guration). 9[...]

Operating the LED Display STS2 107 14.2.3 Maintenance Bypa ss The STS2 is equipped with two ke y-interlocked, bypass breakers, CB4 and CB5, to allow manual bypass of the switch electronics for either input source in the ev ent of switch failure o r for mainte- nance of the switch. Re fer to the static transfer switch one-line diagram ( Figure 3 ). [...]

Operating the LED Display STS2 108 Byp ass Procedures for Source 2 If transfer to Source 1 is not desired: 1. Follow the instructions to transfer the load to Source 2, if it is not the currently used source. 2. Remove the interl ock key from CB 4 and plac e it in CB5 in terlock. 3. Open the alternate so urce input breaker CB1. The LED for CB1 is tu[...]

Operating the LED Display STS2 109 14.2.4 Normal System Shut down The STS2 can be shut down from either th e static switch mode or the bypass mode. Shut down in S tatic T ransfer Switch Mode When the Static Transfer Switch is operating on stati c transfer switch mode (not mainte- nance bypass mode): 1. Turn off the load equipment pe r manufacturer?[...]

Specifications 110 15.0 S PECIFICATIONS This section provides the specifications for the STS2. 15.1 System Configuration The STS2 can be set in several di fferent configura t ions, according to the mo del a nd location. Th e con- figuration is set at the factory an d does not ne ed to be changed by the cus tomer. These configurations apply to both [...]

Specifications 111 15.1.4 Grounding Refer to 5.3 - S ystem Groundin g for specifica tions and inst ructions regarding grounding. 15.1.5 Electrical Requirement s 15.1.6 Input Surge Suppression The STS2 is equipped with transient voltage surg e suppre ssion on each input for maximum surge suppression. The surge suppression is capable of prot ecting t[...]

Specifications 112 15.2 System Component s All STS2 models provide two static transfer switches within one enclosure, with the ability to transfer between two input source s to a single output. All STS2s are configured with either an LCD Color Graphical Interface touch screen display or LEDs for monitoring and configuring the unit. This section lis[...]

Specifications 113 15.2.4 Access The STS2 is designed so all repairs and maintenan ce can be don e from the front or top of the unit. All components that may need repair or replacemen t during routine field maintena nce are safe ly accessed with the units in bypass without removing power from the unit. Th ese components include: • All electronic [...]

Specifications 114 15.2.9 RS-232 Port The unit is equipped with an RS-232 port for conn ecting a terminal or PC. See Figure 29 for the port’s location. See 12.1 - Using the RS-232 Port for instruction s on using a PC terminal w ith the unit. 15.2.10T erminal Port Connections The system has an asynchronous serial port conf igured as Data Terminal [...]

Specifications 115 15.2.1 1RS-232 Interface Parameters The service terminal interface parameters are the following settin gs and cannot be change d. 15.2.12Maintenance Byp ass The STS2 is configured to allow the unit’s elect ronic s to be bypassed to either input source f or mainte- nance without int erruption of power to the load. The STS2 is fu[...]

Event Message Help Text 116 16.0 E VENT M ESSAGE H ELP T EX T Key: ALL CAPS = event message displayed in the Event Display panel in the lower left co rner of the LCD display. Indented text = help text shown in the Display Panel in the lower right corner of LCD display . BOLD = commands that are sent through the RS-232 port. S1 SCR SHORT Source 1 SC[...]

Event Message Help Text 117 S2 SCR OPEN Source 2 SCR Open. One or more SCRs on Source 2 i s open. Tr ansferring between sources has been inhibi ted. STS2 output has been transferred to Source 1. Contact Liebert for technical suppor t at 1-800-LIEBERT (800-543-2378). Press SILENCE on the touch screen to turn off the audible ala rm, if so configured.[...]

Event Message Help Text 118 PWR SPLY DC A FAIL Power Supply DC Bus A Failed The primary power supply is no longer providing DC pow er to the control bo ard and the touch screen. Contact Liebert for technical suppor t at 1-800-LIEBERT (800-543-2378). Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are acce[...]

Event Message Help Text 119 PWR SPLY S2 AC FAIL Power Supply Source 2 AC Failed The AC input power to the power supplies from Source 2 has failed. The power supp lies are now operating on AC powe r from Sour ce 1. The AC input from S ource 2 is still good. Contact Liebert for technical suppor t at 1-800-LIEBERT (800-543-2378). Press SILENCE on the [...]

Event Message Help Text 120 S1 VOLT SENSE FAIL Source 1 V oltage Sense Module Failed The module co ntained on the sn ubber monitoring the in put voltage from Source 1 has failed. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 system from a terminal, type SH and press RETURN on your[...]

Event Message Help Text 121 S2 SCR SENSE FAIL Source 2 SCR Sense Module Failed The module contained on the snubb er monitoring the SCRs for Source 2 has failed. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 system from a terminal, type SH and press RETURN on your keyboard to turn [...]

Event Message Help Text 122 S2 GATE DRIVE FAIL Source 1 Gate Drive Failure The gate drive module for an SCR for Source 2 has failed. This module is contained on the left side gate driver board . Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 system from a terminal, type SH and pres[...]

Event Message Help Text 123 CB1 SHUNT TRIP FAIL Circuit Breaker 1 Shunt Trip Failure Circuit Breaker 1 failed to trip open when the contro l issued a command for the circuit breaker to trip. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 system from a terminal, type SH and press RE[...]

Event Message Help Text 124 S1 UV Source 1 Under V oltage (fast detection). The input voltage from Source 1 dropped below a set percentage of the nominal voltage, as set in the Fast UV set point under the User Settings. An S1 Fail alarm was also issued an d source transfer has been inhibi ted. The load of the STS2 has been transferred to Source 2. [...]

Event Message Help Text 125 S1 OF/UF Source 1 Over Frequency/Under Freque ncy The frequency for Source 1 is running outside the acceptable operating range, as set in the Frequency Trip Point under User Settings. An S1 Fail alarm was also issued and source transfer has been inhibited. Press SILENCE on the touch screen to turn off the audible ala rm,[...]

Event Message Help Text 126 S2 UV (RMS) Source 2 Under V oltage (slow detection). The input voltage from Source 2 remained below a set percentag e of the nominal voltage for a designated period , as set in the Slow UV Setting and Slow UV Detection Delay set points configured under the User Settings. An S2 Fail alarm was also issued and source trans[...]

Event Message Help Text 127 S2 FAIL Source 2 Failure Source 2 has failed due to under voltage (UV), over voltage (OV), or running with an over or under fre quency (OF/UF). This alarm is a companion to S2 UV , S2 UV (RMS), S2 OV and S2 OF /UF . The load of the STS2 has been transferred to Source 1. Press SILENCE on the touch screen to turn off the a[...]

Event Message Help Text 128 S1 I-PEAK Current Peak on Source 1 The peak current from Source 1 has exceeded the set point as defined in the I-PK Xfer Lockout setting under User Settings. T ransferring to Source 2 has been inhibi ted. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 sy[...]

Event Message Help Text 129 LOAD ON ALT SOURCE STS2 load on the alternate source. The static transfer switch is running on the altern ate power source. Check the Event Log to determine the reason for the transfer from the prefe rred source. Another event has caused the sy stem to transfer to the alternate source. The system return s the load to the[...]

Event Message Help Text 130 CB2 (S2) OPEN Circuit Breaker 2 (for Source 2) Open Circuit Breaker 2 is not closed. CB1 is only assigned to Source 2 . Check that the Circuit Breaker 2 switch is in the desired position. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If y ou are accessing the STS2 system from a termi[...]

Event Message Help Text 131 CB3A (OUTPUT) OPEN Circuit Breaker 3A (Output breaker) is Open (Optional) Circuit breaker 3A is not closed. This circuit breake r is assi gned to the output load . The po wer flow to the load cann ot flow through the static transfer switch. Press SILENCE on the touch screen to turn off the audible ala rm, if so configure[...]

Event Message Help Text 132 TRANSFER INHIBITED T ransfer Inhibited Uninterrupted transfer between sources is inhibited due to inp ut source failure, sources out of sync, switch failure, or the unit is in bypass mode. Check the Event Log for the event or ev e nts that may have caused the alarm. Press SILENCE on the touch screen to turn off the audib[...]

Event Message Help Text 133 INPUT CONTACT #2 Input Contact Isolator #2 Occurrence of the indicated ex ternal event has been de tected by Input Contact Isolator #2 of the Open Comms Digital Input option board. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If you are accessing the STS2 system from a terminal, typ[...]

Event Message Help Text 134 INPUT CONTACT #6 Input Contact Isolator #6 Occurrence of the indicated ex ternal event has been de tected by Input Contact Isolator #6 of the Open Comms Digital Input option board. Press SILENCE on the touch screen to turn off the audible ala rm, if so configured. If you are accessing the STS2 system from a terminal, typ[...]

Event Message Help Text 135 CONFIG MODIFIED Configuration Modified A set point has b een updated and saved. Press SILENCE on the touch screen to turn off the audible ala rm, 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 was written to the Ev[...]

Event Message Help Text 136 EVENT LOG CLEARED Event Log Cleared All past alarms and faults are no longer recorded in the system’s event log. Press SILENCE on the touch screen to turn off the audible ala rm, 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 ala[...]

Maintenance 137 17.0 M AINTENANCE Minimal periodic maintenanc e of the STS2 is required. As with al l electric al distri bution components, the system should be regularly inspected for electric al connection integrity, signs of excessive temper- atures, dirt accumulation, an d proper syst em operation. 17.1 Proper T ightening of Nuts and Bolt s The[...]

Maintenance 138 S UPPORT I NFORMATION To contact Liebert Global Services for in formation or repair service in the United States, cal l 1-800-LIEBERT (1-8 00-543-2378). Liebert Global Servi ces is available to assure fast repair of your unit with minimal downtime . Liebert Global Services offers a co mplete range of st art-up services , repair serv[...]

Maintenance 139 P ROGRAMMABLE R ELAY B OA RD S ETTINGS R ECORD The optional Prog rammable Rela y Board (PRB) ha s ei ght channels to report events to an external device. Up to ten (10) events can be programmed to each channel. See 6.1 - Programmable Relay Board for more information on the PRB. If your STS2 has the PRB option in stalled, list the se[...]

Maintenance 140 Channel 8: Channel 9: Channel 10: PRB Notes:[...]

Maintenance 141 I NPUT C ONT ACT I SOLATOR S ETTINGS R ECORD The Input Contact Isolator board (ICI) provides an STS2 module interface fo r up to eight external user alarm or message inputs to be routed through the static tran sfer switch’s alarm network. See 6.4 - Input Contact Isolator Board for more information on the ICI. If your S TS2 h as th[...]

Maintenance 142[...]

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The Comp any Behind the Products With over a million installations around th e globe, Liebert is the world leader in computer protection systems. Since its founding in 1965, Liebert has developed a complete range of support and protection systems fo r sensitive electronics: • Environment al systems—close-control air conditioning from 1 to 60 to[...]