i - STS - Fusion Power Systems
Contents
1. Static Transfer Switch i STS ail salesGi sts com au support i sts au or visit www i sts com au 452. When removing the ing andles pull symmetrically from the frame once the fa have been removed Always use both handles You wills t the Maintenance Bypass Terminal enclosure remains in posit fety reasons it may be prudent to install a dummy 3U over over the front of the unit is a spare is not immedi a for safety reasons and to ensure that contact is not able to e the power sockets NOTE These may have dangerous vol the module is removed Is connections are as described in Section 6 of this manual It is to provide physical separation between control circuits and powe uits This avoids confusion reduces interference and increases the reliability of your installation Again make sure that all control wiring is protected and securely supported so that it is not inadvertently unplugged or removed whilst other equipment is being installed or removed within the enclosure Static Transfer Switch i STS 31 STATIC TRANSFER SWITCH CAUTION HOT REMOVAL OF THIS PANEL EXPOSES DANGEROUS VOLTAGES ACCESS RESTRICTED TO QUALIFIED PERSO NLY Each STS dissipates a small amount of heat see heat dissipation It is prudent to install the through the STS can aid in its operation Thi for exact air flow may mean
3. 19 inch Rack mount STATIC TRANSFER Model i STSBs STS Manufacturing is a subsidiary of STATIC POWER PTY LTD ABN 42 101 765 913 I STS Manufacturing This manual refers to Model Electrical Specifications Rating Voltage Rating Frequency Permissible Voltage Distortion Fault rating Protection Type Manufactured Warranty Maximum Ambient Dissipation IP Rating Maintenance Bypass Bypass Interlock Neutral Rating Fault Current Setting Parallelable Overload Ratings Fault Capacity STATIC TRANSFER SWITCH STS32Bs 1P2 32 Amperes RMS 230 V 20 50 Hz x 1096 10 THDV 2 kA 10 msec 100 Ampere Fuses Thyristor 1 December 200 24 Months R 60 Watts A Int verlapping ommon 32 eres 5 ti peak pre set 000 Amps 10 msec Synchronization Win 10 deg Settable 5 180 deg Break Time Sensing Time LAN Browse Modbus TCP Set up Remote
4. Operating Humidity Altitude Audible Noise Static Transfer Switch i STS lt l4 cycle lt 1 msec No No LCD Contacts 50 V DC 1 Ampere n c 120Amps 1800Volts 100 000 A S 1000 v usec Not for outdoor use 0 70 C 0 40 C 5 90 non condensing 1000 m no de rating 50 dB A 1 5 metres STATIC TRANSFER SWITCH Index SPECIFICATIONS OPERATIONAL DESCRIPTION CONTROLS LCD INTERFACE LED INTERFACE REAR PANEL CONTROLS REAR PANEL USER ACCESS SETTINGS AND ADJ USTMENTS INSTALLATION SET UP AND COMMISSIONING ge po a o pP 12 SET UP CALIBRA 13 FAULT DIAGNOSIS 14 DRAWINGS amp 15 PARTS LIS 16 WARRA amp SERVICE INFORMATION Static Transfer Switch i STS 3 STATIC TRANSFER SWITCH 1 OPERATIONAL DESCRIPTION A Static Transfer Switch STS provides your critical load or single chord single supply technology equipment with an alternative supply source thus increasing and improving distribution reliability and
5. ON THIS EQUIP VES POWER FROM MORE THAN ON CE DISCONNECT OUTPUT AND ALL CES OF POWER FROM THIS NI BEFORE SERVICING The STS assembly is heavy and has sharp corners so if dropped you will not only damage the unit but it is likely that you could injure yourself also Take care when handling the items and ensure that it is physically supported during the installation process At the end of the installation process the STS should be firmly and securely bolted within the enclosure Static Transfer Switch i STS 30 STATIC TRANSFER SWITCH WARNING HIGH LEAKAGE CURRENTS ON ISOLATED INCOMING AND OUTGOING CIRCUITS EARTH CONNECTION IS ESSENTIAL BEFORE WORKING ON CIRCUITS OR CONNECTING DISCONNECTING SUPPLIES SEE INSTALLATION INSTRUCTIONS BEF TING DISCONNECTING INPUT Make sure that you employ a licensed electri ctor to install the STS Check that the enclosure and the S e ectly Earthed Ensure also that all of the cables are securely con nd supported and that all safety covers are installe accessible contacts that woul able to be made here should be NO live exposed or d cause electrical shock if contact is
6. rd mode All STSs supplied B type are standard he selections B and F refer to interrupting capability Is In this case the switch can be configured to operate thyristor mode current zero turn off when manually transferred by the user from the front panel to either current blocking or fast interrupt amp transfer Peak Unable to set through user interface This is the value of peak load current that is used to inhibit a transfer to the alternate source even if the voltage is adversely affected This setting is used to prevent the transfer of a load fault Static Transfer Switch i STS 24 STATIC TRANSFER SWITCH to the alternate source This is necessary when supplied from two UPSs so that the both UPSs are not affected by the load fault The STS remains on the original source even if this causes loss of supply to the source The system will automatically reset to normal mode a few seconds after the return of a good voltage on the source and the current falling below the threshold e g the fault ahs been cleared On the equipments supplied this has been pre set in har 250 Amperes peak and cannot be changed by the use menu option Fan Mode None Model B units less than 40 Amperes do not 63 Ampere units have fans that are continuoust ed by hardware Some models have controls ettable
7. transfer to the returned to the is used to test functionality and original source This functio protections within the STS Static Transfer Switch i STS 23 STATIC TRANSFER SWITCH Screen 4 Deg from 50Hz 9Hz 5Hz 1l or 2 or 0 none 0 5 For B 5 150 1500 800 99 0 None 1Current 2Temp 0 123 1 toggle 2 1 amp 2 3 no STOP Hz Allowable frequency tolerance for Supply 1 andeSu these limits will cause a transfer to the alternat setting of 5Hz is the default Settings of recommended Settings for Man will inhibit user manua the setting s when greater than Preferred 0 Similar to the rear pan access to the rear p ferred source This is useful if urce selection is impaired The rear panel slide swi any settings on this screen To ensure operation t slide switch needs to be in the 0 centre position er respects the control operates as per the rear panel
8. VARIABLES indicat and put electrical parameters POWER QUA and curre provide ac EV ade by visually showing a snap shot of the voltage st factor and a harmonic analysis of the waveforms timate for the load es of state and or alarms generated are recorded in real time nt buffer A P CONF is required to gain entry to the SETTINGS DIAGNOSTICS TION and CALIBRATION screens 3 levels of access allow changing of values within recommended limits a second level allows setting without limits and a third level allows access to other not normally used access points values RESERVED may contain specific options and configurations applicable only to your unit S Static Transfer Switch i STS 9 STATIC TRANSFER SWITCH Additional set up configuration and calibration screens are accessible only by entering the correct passcode It is important that the user understands the consequences of the changes made within these menus as unpredictable and incorrect operation may result if settings are incorrectly set Incorrect setting is not covered by the warranty Refer to Section 7 TITTEN 1 e uU
9. through this interface to allow either Fan to be stopped started by current level OR Temperature sensor on heatsi the fan ects that it necessary to operate User PCode 123 Settable by user gaining access switch on the L possible to re load the defaults by 2 dip switches ON of the 4 wsay dip ler board User In Kere e 1 Refers tion of the User Inputs a b c on the rear panel of S Stanc e 1 as E ower OFF loss of output whilst held closed Tran Supply 1 Transfer to supply 2 OR 2 Emergency Power OFF loss of output whilst held closed Toggle transfer similar to front panel pushbutton Inhibit transfer ignore toggle OR 13 23 Disable Remote Power off Static Transfer Switch i STS 25 STATIC TRANSFER SWITCH FAULT DIAGNOSIS amp MAINTENANCE The STS s has been manufactured to provide a long reliable and useful life However all equipment needs some maintenance If the screen does not come up with the normal WELCOME page hen it may be necessary to RESET the control panel This is accomplished by pressing and holding all of the front panel pushbuttons simultaneo ore than 3 seconds
10. units suppli put load resistor located in the mainte losure Otherwise set to 2 if testing unit withou ged into maintenance bypass e g for testing Seti value ill disable thyristor open circuit and short C on until after the threshold has been reached Over ime min 110 amp 125 Overload Exceeding the overload limits of 110 for greater than 60 minutes OR 125 for 20 Minutes will not affect the critical load and no switching occurs It is intended as a warning that the STS is overloaded Failure to reduce the load will cause semiconductor failures Static Transfer Switch i STS 22 STATIC TRANSFER SWITCH Consult manufacturer before setting to higher values to ensure that the unit will operate safely without failure or overheating Overload time min 150 amp 200 Overload Exceeding the overload limits of OR 150 for 10 Minures OR 200 for 1 Minute will not affect the critical load and no switching occurs It is intended as a warning that the STS is overloaded Failure to reduce the load will cause semiconductor failures Consult manufacturer before setting to higher val hat the unit will operate safely without failure or Xfer Timer Usually left at 0 settable minutes per increment Setting of 0 disables function After the set period the STS will undert ements of 15
11. Operate only if control is lost or the display is corr selection pushbuttons do not fix the problem t ate and time urage the setting After the welcome sign you may be prom This will be required the first time only of the date and time so that real time ev undertaken The Real Time Clock is thereaf If DIP switch 1 amp 4 on LCD control b are set to on the default settings are re programmed Static Transfer Switch i STS 26 S Manufacturing STATIC TRANSFER SWITCH SET UP CALIBRATION amp ADJ UST MENT After entering the correct password access to the following adjustment screens is available The user should use caution in adjusting any of the operational variables as incorrect setting may cause incorrect operation and or loss of the critical load The following screens indicate the contents and functi e Screen 5 100 96R Calculated V A as of Rated alculated kW as of Rated 4 or peak
12. 51 fast Lo Supply 1 Transient Low Transient time constant for this parameter is defined by Transient over sampling time constant 2 x 330 Micro Sec Set as a percentage from Default setting 65 S2 fast Hi Supply 2 Tr msient Transient time con hi ameter is defined by Transient over sa nstant 2 x 330 Micro Sec Set as a perce nominal Default setting 130 S2 fast Lo ient Low nt for this parameter is defined by pling time constant 2 x 330 Micro Sec e from nominal Default setting 65 Transient over sampling time constant transient over sampling quantity times that the values need to be outside the limit values before a fault condition is determined to be true ReTx Pause Operates only when originally on preferred source and when preferred source has been set and an automatically initiated Static Transfer Switch i STS 19 STATIC TRANSFER SWITCH transfer to the stand by alternate supply as a result of a source fault occurs This parameter defines the delay before a re transfer back to the original preferred source occurs after the fault has been cleared and the source has returned to normal steady state conditions This parameter is usually set to 5 seconds If
13. Total harmonic Distortion of current is very high Total harmonic Distortion of Voltage is too hi Heat Sink is Over temperature Fan Failure if applicable Indicates that data preserved by b Remote Transfer Request Local Transfer Request Transfer to 1 OR 2 occurred Varistors failed Power supply mo 0 Detected open Or Detected short ci ist Front p ushbutt n pressed 4 omi 52 when 51 or 2 failed Static Transfer Switch i STS 41 Reiristate Source 51 52 selected supply action User Ala tatus Check Load User Alarm Status Check Load It Inhibits Output Notify for Service tatus debug indication only Status indication only Status indication only Status Transfers to Supply Alarm Notify for Service Restore 51 52 S3 or PRS failed Inhibits transfers Inhibits transfers Status indication only CAUTION Shock Hazard on 1 amp 82 STATIC TRANSFER SWITCH 12 FAULT DIAGNOSIS amp MAINTENANCE The STS s has been manufactured to provide a long reliable and useful life However all equipment needs some maintenance If the screen does not come up with the normal WELCOME page then it may be n
14. O position for nor The override provides control logic bypass only 4 alternative path for the load power NEVER attempt to operate the bypass ch upplies are not in synchronism There is no mechanical inte to prevent the switch from being operated when the supplies are not av r not in synchronism Where the STS B has been pur ed without an integral Maintenance Bypass Supply Switch a separate t ce bypass should be installed Where an integral Mal witch is installed the following descriptions do not Use the contac f the unit to aid with the control cabling of tching arrangement as shown an appropriately rated 2 or 3 position multi pole ed switch with overlapping contacts incorporating early uxiliaries and solenoid interlock auxiliaries will ensure that the STS is in the correct state fore the STS is made These interface to the transfer controls e g uses Transfer to supply 1 and transfer to supply 2 user inputs on the back panel of the STS e Similarly the solenoid interlock is supplied from the output to prevent operation when the supplies are not in synchronism or when the STS is in the incorr
15. RMS calculated n degrees supply1 to supply2 User meas a reference meter and types in the value under the as indicated on the variables page use the key to move to the correct field and to scroll to the correct value pleted an exit is affected by Wi key through the selection list ast calibration option Static Transfer Switch i STS 27 I STS Manufacturing STATIC TRANSFER SWITCH Accessed by entering PCODE 000 Version control STS Utilisation Screens Diagnostics Section 14 The diagnostics screens show the present state or alarm condition or fault Static Transfer Switch i STS 28 STATIC TRANSFER SWITCH The diagnostics screen provides information present condition or status of the STS As indicated as necessary to describe any abno Compensating for non nominal s By selecting W More hardware did Jetermine the deviation of the normalized incoming
16. STATIC TRANSFER SWITCH to the preferred source or that which has been selected on the maintenance bypass switch if not in the normal N position After the welcome sign you may be prompted to enter the date and time This will be required the first time only We strongly encourage the setting of the date and time so that real time event correlation can be undertaken The Real Time Clock is thereafter battery backed up Static Transfer Switch i STS 33 STATIC TRANSFER SWITCH 9 SET UP AND COMMISSIONING Read this whole document thoroughly Understand every aspect before proceeding Request further assistance if you do not understand any aspect of the operation of the STS Support and contact numbers are at the rear of the manual WARNING HIGH LEAKAGE CURRENTS ON LATE INCOMING AND OUTGOIN EARTH CONNECTION IS ESS ORE WORKING ON CIRCUITS TING DISCONNECTING PPLIES SEE INSTALLATION INS IONS BEFORE CONNECTING DISCONN
17. 110 amp 125 Ov Overload time min 150 amp 20 S3 Output Steady State High from nom 108 Averaging time constant for this paramete S S Pause typically 1 5 seconds Set as a percentage from nominal De Should always set this parameter wide amp 92 steady stat high threshold This will ensure that whe is a problem with 51 S2 event list will report c tly S3 sensing is provided as redundant sensing for li 51 or 52 and in case of internal sto transfer to the alternative thyristor triggering fa source Output Steady nom 0 95 65 Averaging tim for this parameter is defined by S S Pause 5 seconds Set as a per nominal Default setting 65 Should parameter wider than the S1 amp S2 steady stat will ensure that when there is a problem with S st will report correctly S3 sensing is provided as sing for on line source S1 or S2 and in case of internal riggering fault Operation is to transfer to the alternative Output transient High from nom 108 135 12099 Transient time constant for this parameter is defined by Transient over sampling time constant 2 x 330 Micro Sec Se
18. 2 POLE 3 POSITION OVERLAPPING POWER CONTROL BOARD POWER CONTROL BOAR STS CONTROL BOARD DISPLAY BOARD USER I BOAR PARALLEL CO Static Transfer Switch i STS Manufacturer Semikron SP TELEMA STATIC TRANSFER SWATCH MERLIN G ANDERSO BUSSMAN ERSON TCHGEAR WER POWER IC POWER ATIC POWER STATIC POWER STATIC POWER 1 75 FE100 P1 75 WAS53 50 41 SPOO1 02 SPOO1 02 SPOO2 O1 SPO03 00 SP004 01 SPOO5 02 Rating 120 Amps RMS 2KA 100 v usec 100 Amps 63 Amps 75Amps 100 Amps 75 Amps 70 Amps n a n a n a n a n a n a I STS Manufacturing 15 CONTACTS STS Manufacturing is a subsidiary of STA ABN 42 101 765 91 Factory 5 39 45 Susan Street Elth Mail to BOX 2003 Research Deliv 5 39 45 Susan Street PH 46 STATIC TRANSFER SWITCH LTD ustralia 3095 search 3095 ictoria Australia 3095 3l 4613 9431 0939
19. cable on t Each of the three supplies supply 1 supp supply has facilities for an active andan are bonded internally ply 3 output ductor The neutrals The cable clamp bar should be ort the cables and relieve any strain on the terminal blocks Static Transfer Switch i STS 39 STATIC TRANSFER SWATCH 11 INTERPRETATION OF LCD EVENT LIST The explanatory text on the LCD screen has intentionally been abbreviated INIT BOOT WDOG STAC FLT EEPM FLT ROM FLT BATT LOW COMS 1 2 3 4 5 6 CAL 1 2 3 oP1T FLT OK oP 1 LOW OK HI OK HZ 1 LOW HI OK SYNC LOS OK SP2T FLT OK 2 LOW OK oP 2 HI OK HZ2 LOW H oP 3T FLT OK SP3 L SP 3 HI 0 LD AN LOAD CURR Static Transfer Switch i STS RAM CHKsum failed Cold Start RAM Corrupt Warm Start re initialize all but RAM Signals software hardware problems Stack or Heap has overflowed EEPROM Checksum error cal ROM has been corrupted Battery has low power needs replacing Communications ha
20. 100 6vents Use Wi tovfew mor Current gt waveform Voltage gt waveform Static Transfer Switch i STS 7 STATIC TRANSFER SWITCH For example to set the time from the Configuration s key A cursor will then highlight the variable field Pr the field Holding the key for more than 2 seconds will When set to the desired value use the Wi key to ield and repeat the process To affect a transfer to the alternative sup the user must press and hold the TRANSFER pushbutton for at least conds Static Transfer Switch i STS 8 STATIC TRANSFER SWITCH This diagram shows the available options and how to navigate them LCD Display Hierarchy EVENT LIST gt 100 EVENTS P USER 1 DATE amp TIME POWER QUALITY MODEL amp VER DIAGNOSTICS CONFIGURATION STATUS shows which supply 1 or 2 is connected the critical load This supply also indicates any pending alarm condition
21. To ir edi BERE Gel EF 1111 P ILL O H 115 115 1 5 g 15 1177 g LI IO Vt w mn i eee oe m MN EID ae imi 3 LE NH ias d dog Mat ua An EU MONS shades ets dE ee aba T T pe s i Foe 1 ru ont nm BP m a n m mg i i me nien i ete Exes am ete Easa am gt am a 3 T i b 0d v4 etd ut 1 SA foo i falf 10111 baili m k mn v amd wa im wa cm aT w a aa oat E oat E us Et ri 1 oet nm io ut an Eus 0 asa aa 8 hs na ws Eas na m af ma F an a e a e Lo a fe 5 dori EEA ee 8 a 3 M P4 12 s T U Eg Pie tt PELI se wis um Wa dau pu asa aram er T o NN BER E mbaili O O nal laa eln Da an la a Ua an ma am as P a PPP Pilar us ma a 1 na Ha RE 8 tte i mie Fa mis 8 8 Tr m EE ol T ed Et rE n C Fenk I li SS For Mode Horne mas Ier r wa ua oud m ser In CI rae pl wii add at E 8 mam M B BR B am ES B j
22. availability I STSB rack mounted static transfer switches are manufactured as a two pole Both the active conductor and the neutral are switched Thyristors are used to undertake the switching process These are many times faster and more rugged and reliable than their electromechanical ivalents Supply 1 Supply 2 The Static Transfer Swi should the supply degenerate to not be y monitors the supply sources and cted to the critical load fail or the critical load the critical load is automatically a ently transferred to the alternate source This switchin ndertaken as a break before make The break in the sup n so short that it is not seen to the critical load This Is prefer ke before break or overlapping change over because f e two supplies are different and connected together large and currents would flow between the sources degenerating both erefore the supply to the critical load i STSB Static Transfer Switches can not be ganged or inter to form a multi pole arrangement Static Transfer Switch i STS 4 i STS Manufacturing STATIC TRANSFER SWITCH ibi CONTROLS Maintenance Controls If y
23. that cool air is allowed to ent f an enclosure and allowed to be expelled at the top of you should avoid blocking the top and t ott also means that of the STS with other equipment It would be prudent to leave 1 m separation between the STSs and adjacent equipmen Provided these precautionary with a reliable back up s yc Before installing th the supply isola aligning the pow If the check cor ui tly p headed the STS will provide you into the space provided ensures that are off down Carefully insert the module h the sockets and push firmly home ha alled and is ready to turn on before doing so u the side mounted power plugs are plugged in home and that the facia plate is screwed home into Be equ wering the STS up ensure that the load side is safe and any ent or cabling connected is ready to be safely powered up Do not open the STS If it is faulty it should be removed from service and returned to i STS manufacturing for analysis and repair To power up operate the isolators to the on position up The LCD should illuminate and after a few seconds of diagnostics should switch the output Static Transfer Switch i STS 32
24. EC INPUT SUPPLIES Consider electrical installed which sh that other item of a circuit bre fault condit protecti n i ination carefully The STS has Fuses mi with down stream protective devices so to the STS are not powered off by the tripping ive device upstream due to a down stream trip only if the down stream device p or there is a fault within the STS The STS Fuses ith any upstream circuit breaker protection device stream fault the STS will not transfer the fault to the ly even if the voltage is adversely affected Once the fault cleared the STS will resume normal operation protecting the critical loads from voltage disturbances 10 second settling time After following all of the considerations and precautionary processes in the last section and been successful and understanding then no further special set up is necessary Each unit has been fully certified and heat soaked prior to shipment Static Transfer Switch i STS 34 STATIC TRANSFER SWITCH CAUTION THIS EQUIPMENT RECEIVES POWER FROM MORE THAN ONE SOURCE DISCONNECT OUTPUT AND ALL INPUT SOURCES OF POWER FROM THIS The red LED ALARM should not be on If it is check the following states Ensure from the su supply selected by Maintenance By a remote mainte pr
25. K state closed contact represents the alarm stat A gt Gener B gt Noti C gt S gt F N y2 aded and calibrations can be performed through the front panel LAN See LAN Supplement Manual Static Transfer Switch i STS 14 Cre v 1 21 5 Manuracturing STATIC TRANSFER SWITCH 7 SETTINGS AND ADJ USTMENTS Screen 1 Basic password 000 Settings Password 123 for access level that allows adj parameters shown only Within the Settings menu s there are two se es One for user manually initiated transfe t panel push button Man And Settings that are used under fault detect ditions Auto It is important that the Aut operating source limits 4 Otherwise you may ex responding to condi In general the gs be set wider than the normal n the UPS capability ole operation of the STS e g ormal for the supply ion is to transfer to the alternate source when the com
26. ansfer Switch i STS 42 i STS Manufacturing STATIC TRANSFER SWITCH 13 SET UP CALIBRATION amp ADJ USTMENT After entering the correct password access to the following adjustment screens is available The user should use caution in adjusting any of the operational variables as incorrect setting may cause incorrect operation and or loss of the critical load The following screens indicate the contents and fun e Screen 5 240 Volts RMS 240 Volts RMS 100 RMS Calculated V A as 96of Rated Calculated kW as of Rated 1 4 or peak RMS calculated in degrees supply1 to supply2 ng a reference meter and types in the value under ing the LCD then use the key to move to the then the W key to scroll to the correct value pleted an exit is affected by Wi key through the selection he last calibration option Static Transfer Switch i STS 43 14 PARTS LIST Part THYMI THYM2 SNB1 SNB2 CT1 Q1 Q2 PLUG FUSE SOCKET MAINTENANCE BYPASS SPOO1a SPOO1ba SPOO2 SPOO3 SPOOA SPOO5 Description Thyristors DV DT LIMITER CURRENT TRANSFORMER ISOLATOR POWER PLUG MALE POWER SEMICONDUCTOR FUSE POWER SOCKET FEMALE CAM OPERATED
27. ault setting 70 5 5 Pause Veraging time constant This is limit 2 steady state values need to be outside the fault condition is determined to be true nt may be required to the steady state values if the ly voltages are above or below nominal generally the setting should be set to 120 of the value of the supply source in the range of 105 125 setting too close a limit to the actual operating Steady State voltage may cause erratic Static Transfer Switch operation Also setting the averaging time to too small a value lt 1 sec may Cause erratic operation Static Transfer Switch i STS 16 STATIC TRANSFER SWITCH Phase Norm setting limits 0 180 degrees default 10 degrees Phase margin in electrical degrees for which a normal user initiated no break manual transfer can be achieved Pushbutton requests when the angle is greater than that shown will be ignored If however the supplies are continually varying because the sources are operating at different frequencies and as long as the difference frequency is within 596 2 5Hz pressing and holding the pwshbutton for 10 seconds will latch the request which will be pro when the two supplies come within the setting limit where sfer request will then be activated If however the suppli back into synchronism within 60 seconds the u will be cancelled Although the setting limi 180 degrees th
28. e B E Lr cn cao po omo en ern Lu Ennii Static Transfer Switch i STS 10 4 LED INTERFACE STATIC TRANSFER SWITCH LED front panel controls consists of only one manually operated transfer switch pushbutton The user must press and hold for At least 2 seconds to affect a manual transfer to the alternate supply Note that manually transferring overrides the preferred source selection at the rear of the unit The LED mimic shows a limited number of operational states outlined below If the Alarm LED is ON and the STS co immediately able to be determined from the LED indicat hese are as ion is not the user may use the HLI port or voltage free contact status at the to further interrogate the unit SUPPLY 1 ALARM gt TRANSFER Gre SUPPLY1 Gr S Not within Specification iled vailable SUPPLY shing Not within Specification ailed the STS n gt On Line connected to critical load Green gt On Line connected to critical load Red Not on NOT connected to critical load Green In synchronism SYNC Green Flashing Occasionally in Synchronism Red Not in synchronism Green Normal LOAD Red Alarm flashing O
29. e consequence of transfe may result in a non seamless transfer Ferromagnetic devices such as transfo large current when out of synchronism The effect on some switchmode power su is also unknown The user should consult with the ipment manufacturer to ensure that damage does not result fro synchronisation transfers and what their recommen iZation limits are When set to 0 di sfer pushbutton operation in the Auto column is exceeded no action takes plac ase Fault Phase imits from 0 to 180 degrees electrical A ated transfers due to supply source output S When a transfer to the alternate source is necessitated T nded default of 30 degrees Up until this value trans at are initiated from the system except manually will occur without a break Once the displacement between the two phases is more than this value 30 degrees a break as defined by Phase Break is inserted Settings to 180 degrees are possible The application of inserting a break when the two supplies are significantly out of synchronism has been established to prevent the inadvertent damage to equipment tripping of protection devices or Static Tran
30. ecessary to RESET the control panel This is accomplished by pressing and holding all of the front panel pushbuttons si ously for more than 3 seconds CHE Operate only if control is lost or the display is cor occurrences After the welcome sign you may be pro time This will be required the first tim the setting of the date and time so that r be undertaken The Real Time Glock is ther the date and rongly encourage ent correlation can battery backed up Recommended Schedule Once per month record units specifications capability Inspect observation A iables and compare with the are within its operating e down any variations from last be taken and or reporting may need sooner if the environment is bad vacuum dust unit Inspect cable plug connections at rear for ns need their fans changed every 7 8 years 70 000 Hrs NOTE Please note that the user should not undertake repair procedures or gains access to the internal of the equipment If the unit is faulty then it should be removed from service as per the accompanying procedure and returned for repair Static Tr
31. ect state Static Transfer Switch i STS 37 STATIC TRANSFER SWITCH h a3 position and isolate STS This is the conventional method for a bypa switch Bypass to 1 and isolate STS Norm Alternatively Once bypassed this 2 pole switch arrangement allows removal of the I STS because of its hot socket capability See Section 6 Rear Panel Access You will need to configure the Screen 4 User In inputs to 2 to change the inputs from toggle mode to a Transfer to Supply 1 and gt Transfer to Supply 2 Static Transfer Switch i STS 38 STATIC TRANSFER SWITCH Always CHECK and ensure that the STS is in the correct state on supply 1 or 2 equivalent to the Supply that you want to transfer to Use the B output and inhibit operation of the maintenance bypass switch until the supplies are in synchronism These inputs and outputs can then not be used for remote signalling also See HLI interface CABLING I STS plug receptacle consists of a Spring Cage Ter The connectors can accommodate up to a singl 50 Ampere models and a 25 mm
32. es unavailable The STS should not be considered a n against power quality from the source There ar S of settings and calibration e Static Transfer Switch i STS Comment from nom 105 125 96 120 99 from nom 0 95 70 99 9ofrom nom 105 120 110 99 from nom 0 95 90 99 1 3 sec 1 5 sec 180 deg 10 deg 1 1 80 deg 30 deg 15 STATIC TRANSFER SWITCH The column to the right shows the variation setting limits for each parameter Set describes the parameter for adj ustment 51 S S Hi Supply 1 Steady State High Averaging time constant for this parameter is defined by S S Pause typically 1 5 seconds c Set as a percentage from nominal Default setting 1202 S1 S S Lo Supply 1 Steady State Low Averaging time constant for this parameter is S S Pause typically 1 5 seconds Set as a percentage from nominal Default 52 S S Hi Supply 2 Steady State High Averaging time constant for this parameter is defined by S S Pause typically 1 5 seconds Set as a percentage from no Default setting 120 S2 S S Lo Supply 2 Steady St Averaging time con thi meter is defined by S S Pause typic Set as a percen no al Def
33. ior to this aff Try usi EQUIPMENT BEFORE SERVICING ON Supply 1 when priority is Supply 2 On Supply 2 when priority is Supply 1 Supply 1 or Supply2 are not in spe Override Switch is in position 1 or Supply 1 amp 2 are not in synchronism The unit is too hot th i metal switch on H S activated There is was an over verload load fault condition connected too on the STS is also the in ce Bypass Switch supply Rotate the to th central N normal position If you have then it too should be in the normal position push button to transfer to the alternate supply To 1 need to push and hold the transfer pushbutton for at e LCD should show that it is now powering the load from th y non preferred If the does not transfer check that the two supplies are available and in synchronism use variables display page Check that the rear control OVERRIDE switch at the rear of the STS is in the centre O position for normal operation Check that you have installed any maintenance bypass interlocking wiring correctly perhaps temporarily remove the cabling and tr
34. ly 1 source the STS will a to Supply 2 when again within t delay te ansfer back set settling CONTROL OVERRIDE CAU Maintenance ONLY 0 Normal A 1 Con Supply 1 is forced to supply the critical load ire Idihg any internal control logic 4 erride gt Supply 2 is forced to supply the critical load y overriding any internal control logic 3 PHASE BUS Not Available in this model Parallel Bus Not Available in this model Static Transfer Switch i STS 13 STATIC TRANSFER SWITCH 6 REAR PANEL USER ACCESS CAUTION The power cabling should not be run adjacent to user controls Separate these control cables from power circuits by at least 300 mm The control signals are distance limited to 30 metres 4 All output relays contacts are rated for 50 V DC re Not 230 V AC rated User Remote Inputs Voltage free contact cl COMM Common return d gt Transfer to Supply 1 b gt Transfer to Supply 2 C gt Fire Stop Causes both Switc ff loss of output User Relay Outputs Relays are normally closed an pen in O
35. ly has one control pushbutton TRANSFER This toggles between the two supply sources Throughout this manual they will be referred to as Supply 1 and Supply 2 respectively The output for the critical KEN will IE referred to as Supply 3 SUPPLY 1 LE SUPPLY 2 eo The LCD version of the control panel has screen i has two selection control pushbuttons wever th operational function nal screen information do not perform any j hs TRANSFER There her user controls however these reside on the back panel and or via the HLI interfaces These additional controls are not required for normal operation Depiction may vary depending on model Static Transfer Switch i STS 6 STATIC TRANSFER SWITCH j 5 Manufacturing 3 LCDINTERFACE red LED ALARM is used to indicate a non normal condition or state The LCD will indicate the nature of the abnormality Operation through the LCD hierarchy allows screen function selection using the Y key Where additional information is available on subsequent screens such as Event History and Set up then these are accessed using the key F Power Quality Analyser via password 000 Event List
36. ou have an i STSBsM model than you have a Maintenance Bypass switch located on the front panel eit J This is a make before break transition betwe output and either incoming supply 1 or 2 depending on direction that you turn the switch The user should only operate the to the supply that is indicated by the STS as being ted E g if the STS is on supply 1 then only use the bypass switch tossupply 1 The switch has provision for locking using a pad lock in of the tree positions supply 1 normal depicted as N position tenance purposes when the STS is faulty and the STS module needs to be removed Normally the swit The switch is and requires The tw tion isolators on the front panel adjacent to and to the tenance bypass switch do not isolate power to the load w enance Bypass Switch is in position 1 or position 2 rs will remove power to the static portion of the Static itch when in normal operation and should not be operated dertaking maintenance or in an emergency With the STS removed there is a break when using the maintenance bypass switch from position 1 to 2 or vica versa through the N position Static Transfer Switch i STS 5 STATIC TRANSFER SWITCH Front Panel Controls The front panel as depicted on
37. s failed to MS Calibration of MSP 42 3 required Supply 1 has fai supply Supply 1 Stea 1 sec Supply 1 Steady h C Freque supply low 0 n with alt supply ve ming Supply too high ent that Incoming Supply too Low s failed no supply n supply 2 is high or low pply 3 has failed no supply t Supply 3 Steady State Low 1 sec tput Supply 3 Steady State High 1 sec Output is overloaded Output has experienced a load fault Output is overloaded 40 Alarm No Service Evente No action tify for Service Notify for Service larm Notify for Service Alarm Notify for Service Alarm Notify for Service Alarm Notify for Service Alarm Notify for Service Transfers to supply 2 if on 1 Transfers to supply 2 if on 1 Transfers to supply 2 if on 1 Alarm No action Alarm No action Transfers to supply 1 if on 2 Transfers to supply 1 if on 2 Transfers to supply 1 if on2 Alarm No action Transfers to alternate supply Transfers to alternate supply Transfers to alternate supply Alarm reduce loading Inhibits transfer to alt supply Reduce load on STS FAIL OVRD PREF THDI THDV HSOT FAN LPM RMIX LOTX XFER VARF PWRS SCRS SCRO ALMC BKFD 51 52 53 1 2 0 1 2 0 HI OK HI OK HI LO FLT OK 1 2 3 OFF 1 2 1 2 1 2 FLT OK 1 2 3 51 52 51 52 51 52 STATIC TRANSFER SWATCH Supply source has failed Manual override switch set to 1 or 2 or none Preferred Source SW 1 or 2 or None selected
38. set to too small a value an unstable condition could result because the source response time is similar to the re transfer time and the source has not been given enough time to recover Preferred source is set to either Supply 1 pref preferred or no preferred source using the e controls mounted at the rear of the STS software setting to follow ReTx Tries This setting refers to the number of times the preferred source will be but is re set on new fault a A setting of 0 inhibi transfer when initiat preferred an transfer back to pted A lock out results after this dition hen preferred source is set a tina transfer back to the NOTE adjust required to the Transient values if the source sup distorted or above or below nominal Setting to the actual operating Steady State voltage may ca atic Transfer Switch operation ie over sampling time to too small a value 1 may operation Static Transfer Switch i STS 20 STATIC TRANSFER SWITCH e Screen 3 from nom 108 135 125 from nom 80 95 65 from nom 108 135 120 from nom 80 95 80 Low current threshold 10 Overload time min
39. sfer Switch i STS 17 STATIC TRANSFER SWITCH opening of fuses that could result from overfluxing of transformers misfiring of switch mode power supplies The philosophy is that it is better to allow the equipment to shutdown orderly and re power up normally rather than under fault conditions The minimal value would be considered at 50 msec Phase Break Setting of 0 insert no break 10 150 msec with resolution of 10 msec These are typical break insertion t additional time would be added as a result of thyrist delays Static Transfer Switch i STS 18 i STS Manufacturing STATIC TRANSFER SWITCH Screen 2 9ofrom nom 108 135 130 99 9ofrom nom 92 0 96 6599 9ofrom nom 108 13596 135 99 9ofrom nom 92 135 65 99 100 msec 1 330 usec 0 300 sec 5 sec 0 5 0inhibits 3 51 fast Hi Supply 1 Transient High Transient time constant for this parameter is Transient over sampling time constant 2 Set as a percentage from nominal Def
40. t as a percentage from nominal Default setting 13396 Static Transfer Switch i STS 21 STATIC TRANSFER SWITCH Should always set this parameter wider than the S1 amp S2 transient high threshold This will ensure that when there is a problem with 51 S2 event list will report correctly S3 sensing is provided as redundant sensing for on line source S1 or S2 and in case of internal thyristor triggering fault Operation is to transfer to the alternative source Also transient limits should be set outside steady state lit Output transient Low from nom 80 9596 8099 Transient time constant for this parameter is defined by Transient over sampling time constant 2 x 3 Set as a percentage from nominal Default Should always set this parameter wider 2 transient high threshold This will ensure that w t problem with 51 S2 event list will report correctly S Ing is as redundant sensing for on line source S1 or d in case of internal thyristor triggering fault O n isto transfer to the alternative source Also transient limits sh side steady state limits Low current th Normally set t es the minimum vale for units load The
41. verloaded 5 REAR PANEL CONTROLS Static Transfer Switch i STS 11 The main power flows through the pow STATIC TRANSFER SWITCH ft side of the removable RHS module of the static tra C ote that terminal arrangements may differ for the model Suppl lease refer to the schematic details at the rear of this m r specific connection information Some models have an Elec nterlock connection between the Maintenance Bypass and STYS connection Ensure th inserted and push 3 Phase and Pa units Static Transfer Switch i STS ocated in the vicinity of the LAN aint e Bypass electrical interlock plug is onnection points omitted on single phase only 12 STATIC TRANSFER SWITCH PREFERRED SOURCE SELECTION pre set 0 No preferred source Supply 1 is the preferred source If STS is forced to 1 automatically transfer the critical load to the alterna Supply 2 source the STS will automatically transfer back to Supply 1 when again within tolerance an settling delay Supply 2 is the preferred source If ST t 2 automatically transfer the critical Supp
42. voltages with the activation levels If an err eater than 3 exists it may be prudent to adjust the stea and or transient levels in the Settings Menus e g compensate for other than nominal input voltage say S1 adjust the High and Low parameters for S1 transient high fast values Hi amp Lo up by 1096to compensate for the larger than anticipated incoming voltage Adjust these to 135 and 90 96 Similarly for S2 to 110 and 65 Repeat process for steady state S S values and S3 supply Static Transfer Switch i STS 29 STATIC TRANSFER SWITCH 8 INSTALLATION I STS B comes already partially assembled ready to install You may wish to disassemble to install within your 19 inch rack enclosure The most crucial aspects of the install are o Safety Damaged to Goods Electrical Connectivity Mechanical integrity Cooling Safety is by far the most important aspect Signage This equipment is powered from two important that you install correct signage a enclosure and it s immediate vicinity to warn what isolation checking and precautionar to be adopted to make the STS and equ to work on ces It is the aspect and rocedures need d to the STS safe
43. y again Static Transfer Switch i STS 35 STATIC TRANSFER SWITCH If the a load item circuit breaker trips at turn on it is probably due to it s equipment internal inrush current not the STS If a circuit breaker upstream of the STS trips there is probably a discrimination error in the protection aspects of the electrical distribution or there is a major fault within the STS The RED ALARM Led should be off Static Transfer Switch i STS 36 STATIC TRANSFER SWITCH 10 MAINTENANCE amp BYPASS OPERATION The integral maintenance bypass switch is fitted with early make auxiliary contacts to initiate the transfer to the correct supply however this is only possible if the STS is operating correctly If it is not a transfer can only be undertaken when the user is sure that the supplies are both available of the same magnitude and phase In the case of a control failure the STS internal control overridden and the output can be forced to the correct OVERRIDE switch to position 1 or 2 as appropriate switch needs to be in the centre
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