Related Manuals for Siemens SB Series
Summary of Contents for Siemens SB Series
- Page 1 SIEMENS SB Encased Systems Breakers 4000 Ampere Frame Rating Information and Instruction Guide • • � • • � Bulletin 2.20-5A ·...
- Page 2 It does not relieve the user of responsibility to use sound practices in application, installation, operation, and maintenance of the equipment purchased . Siemens reserves the right to make changes in the specifications shown herein or to make improvements at any time without notice or obligations.
- Page 4 General Information Introduction facilities. The circuit breakers are constructed for either Siemens SB Encased Systems Breakers bridge the per fixed or drawout installation. They can be physically formance gap between Molded Case Circuit Breakers grouped i n central distribution switchboards, or used (MCCB) and Low Voltage Power Circuit Breakers (LVPCB).
- Page 6 Description I n addition to the performance achieved by combining ventional construction . The electrical insulation property of the MCCB and LVPCB technologies, several 1nstallat1on, the thermoset material enhances the safety of operation . operation, and safety features have been incorporated The insulated case physically isolates and electrically into the SB breakers.
- Page 7 Outline Dimensions section, mal performance of the SB breaker. When operated at pages 74-79. 4000A Frame Fixed Mounted Example One ( 1) 4000A Siemens SB Encased Systems Breaker can be mounted in a 90-inch switchboard, w1th the top sect1on reserved for metering.
- Page 13 Frame Instal l ation Instructions Moveable Drawout Element and Fixed-Mounted SB Breakers To properly engage the moveable drawout element with the racking mechanism, the crank pins on the sides of the moveable drawout element must be i n the "unlocked" position as illustrated and the interlock lever in the "up"...
- Page 15 Instal l ation Instructions Rating Plug �tU�I � N: De:> not � ttempt to force an improper rating � � o a tnp umt, mechanical damage may occur. � � � event the insertion of a rating plug into a trip unit for t IS t Intended, the receptacle in the trip unit has n eye...
- Page 17 Operating Instructions Part Two- Manipulating the Moveable Drawout Element Manipulating the Moveable Drawout Element position and the withdrawn position. Physically, the un There are four positions of the moveable drawout element locked position and test position are the same . However, in These four positions are defined as Connected, Test, the unlocked position, the moveable drawout element is Unlocked, and Withdrawn.
- Page 21 This may cause inadvertent tripping of the breaker if the adjustment is made with the breaker in the closed position. Therefore, Siemens recommends that all adjustment changes be made with the breaker open. To set an adjustment, place a slotted screw driver onto the point-to-point adjustment switch and rotate the switch to the desired setting.
- Page 22 Short ment. There are two modes of operation of this adjustment Time on all Siemens Electronic Trip Units; one is a fixed delay, the Pickup other is an inverse l2t ramp delay. The 12t Delay has the characteristic of being i nversely proportional to the square of the magnitude of the overcurrent condition.
- Page 23 The discriminator function is age to electrical systems and equipment. On Siemens enabled for the first 6 cycles of current flow, after which Electronic Trip Units, the Instantaneous Pickup adjust...
- Page 24 Ground Fault ground fault pickup level has been reached. There are two 12t Delay modes of operation of this adjustment for Siemens Elec tronic Trip Uni t s; one is a fixed delay and the other is an inverse Sees @51, 12t ramp delay.
- Page 25 The following are brief descriptions of the ground fault differential is detected by the trip unit and used in the sensing schemes as they relate to the Siemens Electronic execution of the ground fault protection function. Trip Unit. Detailed technical and application information Source Ground.
- Page 26 Part Three - Monitoring the Electronic Trip Unit Trip Unit Test and Monitoring Functions Integral Test Modes Siemens Electronic Trip Unit is equipped with three stan dard test and monitoring functions to aid the user in the installation and operation of the SB breaker.
- Page 27 Therefore it is Siemens' recommen dation that all accessories be installed utilizing the instruction information accompanying the accessory.
- Page 28 Internal Accessories Preliminary I nstallation Proced ures Remove the breaker cover by first removing the (4) # 1 0 Phillips head screws at the corners and the (4) Phillips head screws in recesses in cover. Remove the trip unit, if installed , by removing trip unit retaining screw.
- Page 29 (see page 65). Accessories Drawout constructed breaker control power connections The full family of accessories available for Siemens SB are made through secondary d isconnects mounted on the breakers are presented in this section. The accessories stationary and moving elements.
- Page 30 Internal A ccessories Electric Motor Op erator Electric Motor Operator Kit Electric Motor Operator An electric operator provides for electric charging of the springs of the stored energy mechanism, remote closing, spring charging status indication, latch checking, and anti pump functions. The standard wiring scheme of the electric operator is such that the springs are automatically re...
- Page 31 Internal A ccessories Electric Motor Op erator Latch -�-- Handle Check Switch Check Sw1tch --- Remote Close Soleno1d - - - - -- - # 1 0-32 3/8'' Motor Operator Screw 1 / 4 " Screw #6-32 x ---. .._ _ _ Soleno1 d Bracket �...
- Page 32 Internal Accessories Electric Motor Op erator 1 2 initial adjustment clearance While holding actuator against switch body. Adjust switch to obtain 1 1 - 1 2 clearance. Breaker springs must be discharged and main contacts open. Slot Latch ..Adjust �...
- Page 33 Internal A ccessories Electric Motor Operator Reset Mechanism Switch Assembly " B ' Midbarrier Wire Tie W1re T1e Mount W1re T1e Wire T1 e Mount Wire Tie RC+ Connector RC Connector J 1 -8 Con nectar MTR-Connector Connector Fuse Connector Mounting of "B"...
- Page 34 Internal Accessories Electric Motor Op erator Secondary Contact \ Screw Movable Fuse Hole Plug Drawout Element 1 8. ) Before replacing the breaker cover remove the fuse hole plug from the inside of the cover as illustrated above. Also 1 4 . ) Re-install the side plate mechanism assemblies if they cut out the "Fuse not installed"...
- Page 35 Internal Accessories Electric Motor Op erator Slide lever on to shaft when installing solenoid assembly. After tightening solenoid screws , align linkage with solenoid plunger and tighten set screw against shaft. 1 1 . #6-32 UNC-28 1 /4" PHMS 1 . Motor Operator Assembly Legend 1 2.
- Page 36 Internal A ccessories Electric Motor Op erator and Local Electric Close A charging status indication (contact accessible at ter Local Electric Close minal point < L T 4>) provides the capability to remotely The local electric close allows the user to electrically inter monitor the stored energy mechanism.
- Page 37 I nternal Accessories Remote Close Solenoid Accessory The purpose of the Remote Close Accessory is to allow the user the ability of closing a manually operated circuit breaker from a remote location. The charging spring must be in a charged position in order to properly employ this device.
- Page 38 Internal A ccessories Remote Close Solenoid Accessory I nsulator Switch Mounting Bracket Pusher Link Latch Check Switch Assembly #6 Screws "B" Switch Figure 2 4.) Align remote close link with solenoid and tighten set screw Figure 4 (see top view detail in figure 1 ) . 5.) Install the latch check switch assembly (see figure 2).
- Page 39 Internal A ccessories Remote Close Solenoid Accessory " B " Mechanism Switch Plate Connection Mid barrier Reset Mechanism Latch Check Switch Assembly " B " Switch #4 Screw Cable Tie Mounts " B " Figure 5 Switch Connection " LC-8" Cable Tie Mount ---- -r�...
- Page 40 Internal Accessories Remote Close Access ory 1 6.) Replace the breaker cover . Check to ensure that wires exit the breaker through the wire guide and are not pinched by the breaker cover. Torque #1 0 (corner) cover screws to Breaker 28-32 in.-lbs.
- Page 41 Internal Accessories Auxiliary Switches The auxiliary switches are installed on the right side of the front compartment, behind the trip unit and below the reset plate. CAUTION: Do not attempt to install an accessory with the breaker "Closed" or "Charged'.�. Make certain breaker is "Open"...
- Page 42 Internal Accessories Auxil iary Switches 5.) Secure the trip unit in place with the reta·1n . 1ng screw located 6.) Replace the front cover of the breaker, being careful not to at the top of the trip unit Torque to 6-8 in. lbs. If trip unit pinch wire leads routed to secondary disconnects or termi...
- Page 43 Internal Accessories Und ervolta g e Release (UVR) Solenoid If practical, the UVR should be installed prior to the SB breaker being installed in the switchboard . Before starting the installation, the breaker should be in the open position and the stored energy mechanism should be discharged. A drawout constructed breaker, already installed in the switchboard, should be placed in thefullywithdrawn position to allow access to the secondary disconnects.
- Page 44 Internal A ccessories Und ervoltag e Release (UVR) Solenoid 4.) Re-install the trip unit 6 ) Replace the front cover of the breaker, being careful not to pinch wire leads routed to secondary disconnects or termi nal block. Secure with eight (8) Phillips head screws. Instal lation of the undervoltage release accessory is complete.
- Page 45 Internal A ccessories Shunt Trip 1 .) Align threaded mounting holes in shunt trip with holes in reset mechanism. 2.) Maneuver the switch to the bottom side of the switch mounting bracket. Make sure the switch actuator is resting CAUTION: Do not attempt to install an accessory with at the end of the upper groove in the reset arm.
- Page 46 Internal A ccessories Shunt Trip Schematic Layout Route Wires Beneath W1re Shield Cable Tie Mount Cable Tie W1re Shield ---, (Shown for 800-2000A Secondary Latch frame, no shield required for 4000A frame.) Cable Tie Mount I n sert Plunger Groove I nto Fork Of Secondary Latch (See Detail t' - B, Below) Check For B m d 1 n g...
- Page 47 Internal Accessories Electronic Bell Alarm - Display Mod ule Relay CAUTION: Do not attempt to install an accessory with the breaker "Closed" or "Charged". Make certain breaker is "Open " and " Discharged" as shown above. 2 . ) With a small screwdriver, press in tab on right side of 36-pin trip unit connector and release from mounting bracket.
- Page 48 Internal A ccessories Electronic Bell Alarm Alarm Reset Switch Customer Supplied � •..• Control . • <RT9> Power § ::::= � - - - · < RT 1 2> -- -r - -i __ _ _ _ _ 60VA Max.
- Page 49 External A ccessories Key Interlock and SB Breaker Pad lock Device Key Interlock on SB Breaker Padlock Device on Breaker Key interlocks are often used to control local sequencing A padlock device on the breaker allows the breaker to be of breakers when multiple power sources are available padlocked in the open position, preventing the breaker for a common load .
- Page 50 External Accessories Drawout Pad lock and Close Blocking Devices Padlock Device on Drawout Mechanism Close Blocking Device on SB Breaker A padlock device on the drawout mechanism pro A close blocking device is used to prevent local close of the vides the means to padlock the moveable drawout ele...
- Page 51 External Accessories Cell Switches "8" or "NC" contacts - Closed when the moveable draw DANGER out element i s in the test, unlocked, or withdrawn position. Hazardous Voltage. Will cause severe injury or death. Open when the moveable draw out element is in the connected Do not attempt to i nstall Cell Switch position.
- Page 52 To install the safety shutters: CAUTION: Siemens recommends Shutter installation prior to placing Stationary Drawout Element into a switchboard or panelboard. I nstall four shutter mounting assemblies .
- Page 53 External A ccessories Drawout Safety Shutters Top left shutter assembly installed. 3.) I nstall four (4) shutter drive assembl ies (two (2) per side) to the left and right cradle plates. (Use #8-32 hardware.) Drawout safety shutters shown installed. 4 . ) Connect the sh utter l ink with the sh utter drive arm by installing the 5/32"...
- Page 54 External Accessories Second ary Disconnects and Control Terminal Blocks CAUTION: Do not attempt to install an accessory with the breaker "Closed" or "Charged". Make certain breaker is " Open" and " Discharged" as shown above. Personal injury or mechanical damage may occur. Control Terminal Block mounted on fixed-mounted breaker.
- Page 55 External A ccessories Control Termi nal Blocks Installation Instructions Mounting of Terminal Block Mount Catalog Numbers: SBTBM DANGER 1 .) Accessory installation should be completed before Hazardous Voltage. Will cause severe injury or death. the breaker is mounted and connected. If breaker is installed, turn off and lock out all power supplying Turn off and lock out all power supplying the circuit breaker prior to cover(s) removal or...
- Page 56 External Accessories Control Termi nal Blocks Mounting of Terminal Block Assembly Catalog Numbers: SBTBL T, SBTBLB, SBTBRT, SBTBRB 1 .) The Terminal Block Mounts should be installed before installing the Terminal Block Assemblies. If the Terminal Block Mounts are not installed see the Terminal Block Mount I nstructions on page 63.
- Page 57 External Accessories Slid ing Second ary Disconnects A breaker can be equipped with up to four secondary DANGER disconnects, each with 1 2 terminal points. Each secondary disconnect consists of an A and a B block. On the right side Hazardous Voltage.
- Page 58 External Accessories Slidi ng Secondary Disconnects and N eutral Sensor To install the secondary disconnects: DANGER Hazardous Voltage. Will cause severe i njury or death. Do not attempt to install accessories with voltage present. "T" Connectors "T" connectors are used to connect power buses to the SB breakers.
- Page 59 External Accessories N eutral Sensing Transformer Introduction DANGER This neutral sensing transformer is designed to be mounted on a bus bar with maximum dimensions of 5.00" x 1 .25". Hazardous Voltage. Will cause severe injury or death. Neutral Sensing Transformer Turn off and lock out all power before Neutral sensing transformers are used with 4-wire residual installing this device.
- Page 60 External A ccessories N eutral Sensing Transformer Important Bonding Jumper The SB series of electronic trip c i rcuit breakers equipped with g round fault protection may be used i n the Residual Grounding El e ctrode or G round Return mod es . When used in the Residual mode the orientation of the neutral sensing transformer is important for proper operation .
- Page 61 External Accessories Lifting Devi ce Bracket CAUTION: SB breakers and Stationary Drawout Ele ments are heavy. Personal injury or mechanical damage may occur if care is not used in lifting these pieces of equipment. Lifting Device Bracket A l ifting device is used in conjunction with a hoist or crane to lift a moveable d rawout element.
- Page 62 External Accessories Rating Pl ug s and Di splay Mod ule Display Module The Display Module provides features for allowing the user to locally monitor the phase currents. The switch to set and select the d isplay is accessible to the user through a hole i n the transparent cover of the trip u n it.
- Page 63 External Accessories Auxiliary Power Supply Auxiliary Power Supply Before installing the d isplay module, the breaker shoul d be placed in the open position. The auxiliary power supply is a plug-in supply for bench test1ng the Electronic Trip Unit. The supply may also be used The d i splay module is a plu g-in unit.
- Page 64 ENTER. Entry of erroneous d ata in the identifying turn-on message: above steps will result in false tests and results. & Siemens Energy Automation , I n c . F. After entering the breaker switch settings, you must TS-31 Test Set Press any key t o continue.
- Page 65 External A ccessories U niversal Test Kit (TS-3 1 ) Enter one of the following letters: and then for the phase to test. A message will then "A"-Phase A or Left Pole appear stating the test results. For example: " B "-Phase B or Center Pole CT Resistance Test.
- Page 66 Outl ine Dimension Drawing 4000A Stationary Drawout Element 4000 Amp Stationary 9.50 ---- --+ - 2.7 5 Drawout Element Top View 25.38 29.50 Liftin g Poi nts. Do Not Lift By Other Points. 7.50 26.50 8.34 <t-- - I nside Cradle 7.50 0.438...
- Page 67 Outl ine Dimension Drawing 4000A Stationary Drawout Element 4000 A m p Stationary 28.50 2X 1 4.25 Drawout Element Rear View 2X 1 2.75 Front Mtg. Holes 0 I 0 4X 1 5 .00 - - - - - - - - 4X 8.75 2X 1 7.50 4X 7.50...
- Page 68 Outline Dimension Drawing 4000A Moveable Drawout Element 4000 Amp D rawout 75 --j r-- Breaker Fully Moveable Element Withdrawn Top View , : : � � � ftt � � 1 . 61 Te' t : �*� � � � 1 .
- Page 69 Outl ine Dimension Drawing 4000A Moveable Drawout Element <t <t 18. 1 8 2.87 ( 2.87 4.85 + - - - : - - - ��- 4.85 4.85 Cove r Cover Front Panel Cutout Optional Panel Cutout Minimum Clearance ( For T rip Unit and Label I nformation) 4000 Amp Drawout Moveable Element...
- Page 70 Outline Dimension Drawing 4000A Fi xed Mounted Escutcheon D imensions T y p. 0 -6 · 0 . 2 5 9 . 1 3 0 O r- Ty p . 3 50 1 . 25---- -- -. 4000 Amp Fixed Mounte d Ty p.
- Page 71 Outl ine Dimension Drawing 4000A Fixed Mounted 4000 Amp Fixed Mounted Top View I I I )I 1 1 . 1 3 1 1 .38 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 .63 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
- Page 72 Ord ering Information Encased Systems Circui t Breakers, Electroni c Tri p U nits and Rati ng Plug s Type SB Encased Systems Breaker Frames, Standard Interrupting Rating Drawout Breaker Stationary Breaker Type Fixed Mounted with Moveable Mechanism Drawout Mechanism Frame Size Catalog Number Vertical Bus Catalog Number...
- Page 73 Ord ering Information I nternal Access ories/External Accessories Electric Motor Operator Auxiliary Switches Operating Voltage Catalog Number Contact Configuration Catalog Number 1 20 VAC SB4E01 20 1 A & 1 B SB4AS2 24 VDC SB4E0024 2A & 2B SB4AS4 48 VDC SB4E0048 3A &...
- Page 74 Ord ering Information External Accessories Key Interlocks Dead Front Shield Accessory Catalog Number Accessory Catalog Number Installed on Breaker KISB 4000A Envelope Provis'1on Only Drawout Circuit Breaker SB40DF Circuit Breaker 40KIPOF Drawout 40KIPOD Remote Indication Panel Padlock Devices Accessory Catalog Number Remote Indication Relay Panel SBRIP Catalog Number...
- Page 75 Ele ctrical Diagrams < I - - <LT5> :<;--- -- - -- -- <SC-HC> " Control 1 - -- --- pring Check) Power Switch (Handle Check) Supplied by Switch Customer <LT4> Spring Charged lndrcation ---- --, : < LT3> Local Elec t ric Close (Latch Check) ---- --, - - - Switch...
- Page 76 El ectrical Diagrams .NO! / <LT2> Remote Cl o se Electrtc 1 (Local Electric C Close) Control Local Switch Power 1 1 � Local Electric Close AvAtldble As Factory Installed Opt10� Only (Handle Check) <HC-LCo- 3�:� 0 < c7 ' Note·...
- Page 77 El ectrical Diag rams --- -- -- -7 <RT 1 > Aux 4 A _:;;. � <RT2> ---- -- --o>- -- -L o Auxiliary Sw1tch 4 <RT3> Aux 4 B ---7 1 >------ ---- > ' 1 � 8 <RT4> ____ �...
- Page 78 (70 1 ) 293-7709 TLX: 822024SEA IBU UF Fax: (404) 751 -2496 © & Phone: (404) 751 -2291 Bulletin SIB2 .20-5A (New) 1 0M 1 092SP Printed in U.SA 1 992 Siemens Energy Automation, Inc. Siemens is a reqisterecl trademark S 1 emens...