Siemens SB25TLI, Information And Instruction Manual

Page 1: ...SIEMENS Electronic Trip Unit for SB Encased Systems Breakers Information and Instruction Guide eooA 00 t0 ptfB P Gra Faur 2 3 Tnp S CBCrf Bulletin 2 20 3A Courtesy of NationalSwitchgear com ...

Page 2: ... this manual a qualified person is one who is familiar with the installation construction or operation of the equipment and the hazards involved In addition he has the following qualifications a is trained and authorized to de energize clear ground and tag circuitsandequipment inaccordancewithestablishedsafetypractices b is trained in the proper care and use of protective equipment such as rubber ...

Page 3: ...m 20 2 2 20 20 3 21 3 21 3 3 21 21 4 5 Time Current Characteristic Curves 22 34 Installation Instructions Installing the Trip Unit Removing the Trip Unit Accessories 6 8 Auxiliary Power Module and Display Module Universal Test Kit TS 31 35 9 36 37 Operations Removing Replacing Plexiglass Cover Inserting and Removing the Rating Plug Electronic Trip Unit Functions Setting the Fault Protection Adjust...

Page 4: ...ficprotectionrequirements All trip units have Adjustable Continuous Current and Long Time Delay Optional protection configurations are Protection Configuration Long Time Short Time Long Time Instantaneous Long Time Short Time Instantaneous Long Time Short Time Ground Fault Long Time Instantaneous Ground Fault LIG Long Time Short Time Instantaneous Ground Fault As standard features the trip unit ha...

Page 5: ...it for which it is not intended Siemens Type SB Systems Breaker Three physical Type SB frame sizes are presently avail able Thesearethe800A 2000A and4000A Theinterrupt ing ratings of theseframes are given inthe following table UL Symmetrical RMS Amperes Interrupting Rating A I R Frame Size UL Listed Symmetrical Amperes 800A 4000A 2000A Available Rating Plugs Alternate A I R Rating kA 240V ac 480V ...

Page 6: ...function The numerical values are stored in the processor s permanent memory Currentdataisderivedfromcurrentsensorsmountedinthe Siemens Type SB Breaker These sensors are current transformers As passive devices they provide high reli ability with minimum signal error while providing power for the trip unit The current signals from the transformers are converted to digital voltages in the trip unit ...

Page 7: ... 0 3 o o 0 0 o O 0 0 0 O 3 C Z3 O o 5 0 D 0 CQ 0 3 oi ...

Page 8: ...the SB Breaker should be in the Discharged mode prior to installing a trip unit 1 Remove the 8 screws from breaker front cover To install the trip unit the front cover of the circuit breaker must first be removed This is done oy removing the eight 8 Phillips head screws that hold the front cover in place Installation of Electronic Trip Unit Siemens Type SB Breaker has a built in interlock device t...

Page 9: ...nd fault protection the ground fault selection switchonthe sideof thetrip unitmust besettothe appropriate sensing scheme Residual or Source Ground ZeroSequence priortoinstallingthetripunit Theseground fault sensing schemes are discussed on page 18 WARNING Donot attempt tomodify rejection features SIEMENS Type SB Tnp Ur caf He sizr rc 5EKSL r rv s sa 5 CJC Jl L C r 4 Hi 7 2 4 Check label on side of...

Page 10: ... unitontothesupportplate Thepinsonthesupportplatewill fit into the holes in the bottom of the trip unit 9 Replace the front cover Replace the front cover Then replace the eight 8 front cover screws If trip unit top is not secured properly the interlock will prohibit closing of the breaker NOTE Before energizing breaker be sure to install a proper rating plug See pages 10 and 11 8 Courtesy of Natio...

Page 11: ...Circuit Breaker Steps 1 through 3 Beforestartingtoremovethetripunit setthecircuitbreaker to the Open and Discharged positions If the circuit breaker isinthe Closed position thebreaker willtrip when the trip unit is removed 2 Remove the trip unit retaining screw Removethefrontcover of thebreakerandtripunitretaining screw Lift the trip unit from the support plate and unmate the connector Note that t...

Page 12: ...d above Inserting and Removing Rating Plug from Trip Unit Steps 1 through 7 Priortoinsertingorremovingaratingplug check toseethat the circuit breaker is in the Open position The circuit breaker should always be in the Open position when a ratingplugisnotinthetripunit Thetrip unitwilldefaultto the lowest possible settings if a rating piug is not installed To prevent the insertion of a rating plug i...

Page 13: ...o not force the rating plug into place Toremovearating plug squeezetheclipsand pulltheplug from the plug receptacle Sincethe plug is held in place by compression some force will be required to remove the plug Do not close the circuit breaker with the rating plug removed from the trip unit r P n 7 Seal the cover After the cover has been replaced a wire lock may be insertedthroughholesin thescrewsan...

Page 14: ...est set and power supply The trip unit has factory installed capability for zone selective interlocking and communications for remote monitoring These functions are accessible via the TS 31 Test Port Setting the Fault Protection Adjustments TheElectronic Trip Unitexecutes itsovercurrent protection functions based on the rating plug value and the setting of the current adjustments Therefore care sh...

Page 15: ...rt time pickup is set to a multiple of the rating plug value lr 4 Short Time Delay Region The short time delay is set to either a fixed delay illustrated or an inverse l2t ramp function delay calibrated at 8 times the rating plug value lr 5 Instantaneous Pickup Region The instantaneous pickup is set to a multiple of the rating plug value lr 6 Ground Fault Pickup Region The ground fault pickup is s...

Page 16: ...ondsat acurrent equal to 6 times I SIEMENS Continuous Rating Plug ir 2000A o SYSTEM CHECK f 14 Long Time 17 Delay Secs 6 x lr Adjustable Continuous Amps TheContinuousampereadjustmentsetsthecurrentleveiat which the breaKer will continuously operate without initiat ing a tripping sequence On Siemens Type SB Trip Units the continuous operating current may be set to 50 60 65 70 75 80 85 90 95 and 100 ...

Page 17: ...me Pickup The Short Time Pickup adjustment is used to set the level of high current the breaker will carry for a short period of time without tripping This adjustment together with the ShortTimeDelay allowsdownstreambreakerstimetoclear short circuit faults without tripping the upstream breakers On trip units for the 800A and 2000A Type SB frame sizes theShort Time Pickupmay be set to 1 5 2 2 5 3 4...

Page 18: ...nd 2000A Type SB frame sizes the Instanta neous Pickup adjustment may be set to 1 5 2 3 4 5 6 7 8 10 or 12 times lr On trip units for the 4000A frame size the adjustment may be set to 1 5 2 3 4 5 6 7 8 9 or 10 times lr 65 Discriminator Circuit Making Current Release This circuit overrides the short time delay function should the breaker attempt to close into a faulted system tripping the breaker i...

Page 19: ... 800A 20 25 30 40 50 60 70 80 90 20 25 30 40 50 60 70 80 90 100 100 Ground fault FixedDelay 1200A 1600A 20 25 30 40 50 60 70 80 90 100 20 26 32 38 44 50 56 62 68 75 2000A 2500A 20 23 27 30 35 40 45 50 55 60 20 23 26 29 32 35 38 41 44 48 C1 3200A 4000A 20 21 23 25 27 29 31 33 35 37 20 21 22 23 24 25 26 27 28 30 Q n Adjustable Ground Fault Delay The Ground Fault Delay adjustment is used to set the t...

Page 20: ...chnical and application information of the ground fault sensing schemes is contained in NEMA Standard No PB 2 2 Application Guide for Ground Fault Protective Devices for Equipment For information on Ground Fault Selection Slide Switch refer to page 7 Residual 3 Phase 3 Wire Undernormalsystemconditions without ground fault thevector sumof the phasecurrents being monitored by the trip unit is zero T...

Page 21: ...stantaneous Pickup 7 A Long time delay set at 25 secs cali brated at 6 times I 30 35 100 27 40 Ground Jh45 Pickup 50 6 FRAME RATING In 2000A 2 r 20 60 55 C Fixed 4 5 D 3 1 Ground Fy o o 0 in c M L CD ifl K E 10 H 100 1000 10 10 10 Short time pickup set at 2 5 times I Fixed H 3 D 1 3 Ground fault pickup set at 30 percent of frame rating ln 1 1 CD O o 3 Short time delay set at 0 2 secs I2 t calibrat...

Page 22: ...assindicator doesnot light after theTesting indicatorsignifiesthatthetestiscomplete amoreextensive test should be run with Siemens TS 31 Universal Test Kit see Accessories CAUTION Before conducting a Trip test ona circuit breaker which is Closed and in service caution should be taken to evaluate effects on downstream loads The breaker w open during testing resulting in a disruption of service The ...

Page 23: ...h this feature atrip unit breaker inthe protected zonewillrespond to itspreset delay settingsif it receives an arming signal fromadownstream breaker If no arming signal is received the trip unit will trip the breaker with minimum delay thus minimizing fault damage in the pro tected zone The Type SB Trip Unit Zone Selective Interlocking is compatible with Siemens Sensitrip III and LVPCB product off...

Page 24: ...Time Current Characteristic Curves Time Current Curve 800A and 2000A Frame Sizes Long Time Instantaneous Protection Configuration t I t 22 Courtesy of NationalSwitchgear com ...

Page 25: ...erating Current o SYSTEM CHECK X X Long Time Delay Secs 6 x lr 1000 3 4 2 5 5 Short Hr Jh Pickup Xl 1 5 7 9 8 Fixed 2 3 u Short Time Delay _ Secs 15 8 xlf 100 n V T3 C o Ft o o cn X c V Long Time Delay x 0 X 10 10 V X V v I H 3 X CD X 3 k C 1 1 O o Snort Time Pickuo 3 o 0 I Short Time Delay Fixed 1 1 1 o O o Instantaneous Override fixed at frame size short time rating O CD K 01 01 23 Courtesy of N...

Page 26: ... Continuous Operating Current o SYSTEM CHECK Long Time Delay Secs 6 x lr 1000 3 4 Short Time Pickup xlf 100 Short Time Delay Secs 8 x lr I W a c o o I D cn c X A Long Time Delay O E F V 10 10 V V H T 3 Short Time Pickup CD 3 v cn A CD o O i k 3 a 1 5 K A V Soon Time Delay ft 2 1 1 o 5 o o Instantaneous Override fixed at frame size j short time rating o o 5 01 01 24 Courtesy of NationalSwitchgear c...

Page 27: ...rrent o SYSTEM CHECK Long Time Delay Secs 6 x lr v i 1000 3 4 2 5 5 Short V Jr6 Pickup 2 Xlr 1 5 7 9 8 Fixed 2 3 Short Time Delay Secs 8 x l 100 D C o o 0 if Instantaneous Pickup c v xl Long Time Deay CD E K 10 1 V L v H 3 i CD 3 1 1 Short Time Pickup if 4 CD O O 3 CL fi i Short Time Delay Fixed 1 1 O O ik i s Instantaneous Override fixed at frame size short time rating o o Instantaneous Pickup CD...

Page 28: ...X Long X Time Delay Secs 1000 6 x lr 3 4 Short Time 6 Pickup Xlr 9 8 Fixed 2 3 100 15 Short j A DeTaey 15 S8 xlr 1 k 07 3 2 Ft i T3 x C x O Instantaneous Pickup o S V CD Long X V time Delay Xlr X c X y 10 i 0 I X T 1 V V X X X H s X X X 3 0 s Short Time 5 Pickup 1 1 3 V 0 o O x 3 T o o Short lime Delay Ft i C o o k 0 x 1 c 1 O 0 E r Instantaneous Override fixed at frame size short time rating Inst...

Page 29: ...Time Current Characteristic Curve Time Current Curve 4000A Frame Size Long Time Instantaneous Protection Configuration 0 I 27 Courtesy of NationalSwitchgear com ...

Page 30: ...0 Continuous Operatirg Current o rSTEM HECK s Long Time Delay Secs 1000 6 xlf 3 3 5 Short Time 5 Pickup xl Fixed 2 3 100 Short Time Delay Secs 8 x 1 O X c o o 1 Q Long Time Delay cn v C 0 E 10 10 F i V H 3 D 3 1 C D 1 o 1 Short Time Pickup O 3 CL f Snort Time Delay Fixed a 1 i O o 5 o O Instantaneous Override fixed at frame size short time rating T 01 01 28 Courtesy of NationalSwitchgear com ...

Page 31: ...Operating Current o SYSTEM CHECK i J Long Time t Delay Secs 1 1000 6 x lr 3 3 5 Short Time 5 Pickup xlr 8 7 100 s Short Time Delay Secs 8 x lr a Long Time Delay C O u D 0 v c o 10 E 10 r H v Short Time Pickup H A X 3 k o x 3 CO CD k 1 o 1 i o 3 X a V W k Short Time Delay ft v SI 1 Q 1 O o Instantaneous Overripe fixed at frame size short time rating O o CD t 1 I 01 01 29 Courtesy of NationalSwitchg...

Page 32: ...Current o SYSTEM CHECK X Long Time Delay Secs 6 x lr i 1 i 1 1000 3 3 5 Short Time 5 Pickup xir 8 7 Fixed 2 3 100 Short Time Delay Secs 8 x lr 0 o K Long Time Delay C o o X a Instantaneous Pickup C x c Xir 0 x 10 h X v v H 3 0 3 1 1 in Short Time Pickup 0 O o 3 o w Short Time Delay Fixed 1 V 1 i O o Instantaneous Override fixed at frame size short time rating O O Instantaneous Pickup 4 0 4 01 01 3...

Page 33: ...nt o SYSTEM CHECK k t Long Time Delay Secs 6 x lr v 1000 3 3 5 Short Time 5 Pickup Xlr rFixed 2 3 100 15 Short 1 I O 07 c o 3 2 Pt X O Long Time Delay 0 CO Instantaneous Pickup c Xlr D i 10 j F V Xr X X Short T me Pickup H v 3 CD 1 1 D v X V CD X CD r X o 1 o Short Time Delay Ft o V X 1 1 D 1 O r O Instantaneous Pickup Instantaneous Override fixed at frame size short time rating o O CD k t 1 01 01...

Page 34: ...c 5 cu 3 o 1 Ground Fault Z Delay 0 5L Ground Fault Delay Fixed Ground Fault Delay ft 4 E E P P 2 Sees i 1 3 5 4 t 4 1 1 Ground Fault 70 Pickup 19 FRAME RATING In 1200A o o O O 100 90 Fixed 4 L 5 L 3 1 Ground 2 Fault Delay 0 5 ln V 2 Secs 1 3 5 4 Ft 01 01 I lr 9 n 75 100 H 9 1000 10 75 100 10 1000 10 10 Ground Fault Pickup Ground Fault Pickup m i v 38 44 1 1 32 Ground V HBSU ig U v FRAME RATING ln...

Page 35: ... 3 Ground Fault Delay ft 1 Ground _ Fault 2 Delay 3 5 U o o E E V Ground Fault Delay Fixed P j 2 Secs 1 5 4 Pt t t 1 1 o 0 o O o o r 01 01 I L g n I l 9 n 48 100 1000 48 100 1000 10 10 10 10 IfGround Fault Pickup Ground Fault Pickup V 29 32 1 1 26 j S 35 Ground Vjj 38 pfckup l9 Wn c I T3 FRAME RATING ln 2SOOA c c c o 23 O o f o I 0 o CO 20 T 41 t CO 48 44 C C rFixed 4 5 4 Ground Fault Delay Fixed ...

Page 36: ...Fault Delay Ft 3 1 Ground Fault 2 Delay Secs 3 8 5L Ground Fault Delay Fixed E F V i 2 r 1 5 4 Ft 4 H 1 u O 01 I ln 9 n I in 9 n 1000 100 30 1000 10 30 100 10 10 10 7 I I i 14 Ground Fault Pickup Ground Fault Pickup s r 1 1 23 24 w a TJ 22 Ground VS 26 Pickup lg l c c o 5 o FRAME RATING In 4000A i u I 21 7 0 CO CO c 20 27 30 28 03 03 Ground Fault Delay ft E Fixed 4 Grdund Fault Delay Fixed E 5 F A...

Page 37: ...ry Power Module APM Plug in Power Supply for bench testing of the Electronic Trip Unit for Siemens Type SB Systems Breaker Display Module Current monitoring Display Module see page 21 35 Courtesy of NationalSwitchgear com ...

Page 38: ...n service caution should be taken to evaluate effects on downstream loads The breaker will open during testing resulting in a disruption of service and possible erroneous readings might occur due to the effect of a sys tems load Operating Instructions A Remove electrical loads from circuit breaker B PlugtheTS 31 test set intoa grounded 120VACreceptacle and turn it on You will be greeted by the ide...

Page 39: ... will prompt for thenext instructions Thedisplay will show NOTE This warning will appear if you attempt to run a short time test withtheinstantaneouspickup set equal to or below the short time pickup It would also appear if you tried to run a long time test with short time pickup set to 2 This isonly awarning the test canstill berun However passing or failing the test may not be conclusive Change ...

Page 40: ...SB12TLSIG 1200 x x X X 1200 x X X X 1200 x X X X X SB16TLI SB16TLS SB16TLSi 1600 x X X 1600 x X X 1600 x x X SB16TLIG SB16TLSG SB16 LS1G 1600 x x x X 1600 x X X X 1600 X X X X X SB20TLI SB20TLS SB20TLSI 2000 2000 2000 x X X X X X X X X X SB20TLIG SB2CTLSG SB20TLSIG 2000 x X X 2000 x X X X 2000 x X X X X Electronic Trip Unit 4000A Frame Size Continuous Current Setting Long Time Delay Frame Ampere R...

Page 41: ... 600 700 Catalog Number Plug 800 Rating 40S32000 40SB2500 4QSB3000 2000 Rating Plugs 1200A Frame Ampere Rating 2500 3000 Catalog Number Plug 40SB3200 40SB400C 3200 Rating 4000 12SB600 12SB700 12SB800 600 700 Other Items 800 12SB1000 12SB1200 1000 Catalog Number 1200 Item Universal Test Set Auxiliary Power Module Display Module TS 31 SBAPM SBDM Rating Plugs 1600A Frame Ampere Rating Catalog Number ...

Page 42: ...UL Listings and File Numbers Trip Unit Breaker E9896 Accessories E57501 Drawout E135453 CSA LR57039 40 Courtesy of NationalSwitchgear com ...

Page 43: ...on 209 478 9596 New Jersey Union 201 687 7672 Pennsylvania New Mexico Albuquerque 505 881 1611 Maine Portland 207 854 0021 Erie Washington Seattle 206 828 6600 Spokane 509 325 2582 814 456 5998 Philadelphia 215 646 3800 Pittsburgh 412 788 8060 Hawaii Honolulu 808 533 7135 New York Albany 518 482 0790 Buffalo 716 834 3815 Long Island 516 759 2325 New York metro 212 736 2640 Syracuse 315 453 3780 Ma...