Critical Power Switchboards. Selection and Application Guide

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1 Selection and Application Guide

2 Siemens RCIII (rear connected) switchboards utilizing Siemens Type SB Encased Breakers are a perfect solution for your critical power distribution needs. Whether your installation is a data processing center, telecommunications, health care or educational facility, Siemens RCIII switchboards and SB Encased Breakers can satisfy all your power distribution equipment needs and will provide maximum power reliability. Meets UL 891 and NEMA PB-2 Switchboard Standards Individually Mounted Devices Stationary and Drawout Mount Breakers Up to Three Levels of Through Bus Optional 30 Cycle Short Time Bus Bracing Optional ACCESS TM Power Monitoring and Communication Short Circuit Current Ratings up to 200kA Incoming Service up to 6000 Amp Tin Plated Aluminum or Silver Plated Copper Bus Indoor or Outdoor Enclosures Up to 6 Breakers Can Be Mounted in the Same Vertical Stack Compartmentalization Available Separate Breaker, Bus and Cable Compartments SB Encased Breakers Meet All UL 489 and IEC Standards 1

3 Type SB Encased Systems Breakers Front View of Incoming Service and Distribution Feeder Section Rear View of Bus and Cable Compartment of Feeder System Barriers Installed Rear View of Bus and Cable Compartment of Feeder System Barriers Removed Type SB Encased Systems Breakers Maximum Interrupting Capacity Short Time In Symmetrical RMS Amperes Ratings In Maximum Available For Voltage AC Symmetrical Ampere Amperage Breaker RMS Amperes Rating Range Type 240V 480V 600V (30 Cycles) , , SBA 65,000 65, , , , , SBS 100, ,000 35, ,000 85, , ,000 SBH 200, , , , ,000 2

4 SB Encased Systems Breakers Shunt Trip Auxiliary Switches, up to 6 N.O./ N.C. Undervoltage Release Electronic Bell Alarm Module Electric Charging Motor Operator with Electronic Controller Integral Local Electric Close Option Integral Kirk-Key Interlock on SB Close Blocking Device Trip Padlock Device Position Padlock Device (Drawout) Cell Switches, 4 N.O./ N.C. (Mounted on Drawout Stationary Element) Automatic Safety Shutters Kirk-Key Provision (Mounted on Drawout Stationary Element) Mechanical Interlock Capacitor Trip Device Remote Indication / Relay Panel Auxiliary Power Module (for benchtesting trip unit) TS 31 Universal Test Set Available Rating Plugs Frame Ampere Rating (I n ) Rating Plug Amperes (I r ) ,225,250,300,350, , 450, 500, 600, 700, , 700, 800, 1000, , 1000, 1200, , 1200, 1600, , 2000, , 2000, 2500, 3000, , 2500, 3000, 3200, , 3000, 3200, 4000, 5000 SB Breaker Trip Unit Ratings (I r = Rating Plug Value; I n = Frame Ampere Rating) Current Setting (x Current Rating P/US).5,.6,.65,.7,.75,.8,.85,.9,.95, 1.0 Long Time Pickup (T) Delay (Sec.) 2.5, 5.5, 8, 10, 14, 17, 21, 25, 30 Short Time Frame Amp Rating A A (S) Pick up (xl r ) 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8 Delay (I 2 t) out.07,.1,.15,.2,.3 seconds Delay (I 2 t) in.07,.1,.15,.2,.3 seconds Adjustable Frame Amp Rating A A Instantaneous Pick-up (I) Pick up (xl r ) 25kA 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10 Instantaneous Frame Amp Rating A 2000A 3200A A Override Fixed 25kA 35kA 50kA 65kA Ground Frame Amp Rating I n Available Setting (I n) Fault 400, 800, , 25, 30, 40, 50, 60, 70, 80, 90, 100 (G) , 26, 32, 38, 44, 50, 56, 62, 68, , 23, 27, 30, 35, 40, 45, 50, 55, , 23, 26, 29, 32, 35, 38, 41, 44, , 21, 23, 25, 27, 29, 31, 33, 35, , 21, 22, 23, 24, 25, 26, 27, 28, Setting fixed at 1200A Delay (Fixed).1,.2,.3,.4,.5 = I n Delay (I2t).1,.2,.3,.4,.5 = I n Current equal to 6 times I r. Current equal to 8 times I r..500 seconds maximum. No trip point setting exceeds 1200 amperes. SB Trip Unit Replaceable Rating Plugs Adjustable From % of Frame Rating Continuous Self-Diagnostic Watchdog Integral Test Functions for Phase and Ground Fault (Trip and No-Trip Tests) External Power Source Allows Bench Testing of Stand-Alone Trip Unit Plug-in Display Modules for Current and Energy Display Capabilities Long Time Continuous Current Setting Long Time Delay Band Setting Static Trip III Trip Unit Short Time Pickup Setting Short Time Delay Band Setting Instantaneous Pickup Setting Integral LED Trip Indicators Full Communications Capability Via Siemens ACCESS Network LCD Target Thermal Memory Switch Short Time I 2 t Ramp Switch Zone Interlock Switch SB-EC Trip Unit Zone Interlocking Input/Output and Future Options LCD Display Key Pad Test Connector Serial Port System Check Leds System Status Leds 3

5 Siemens ACCESS Electrical Distribution Communication System centrally monitors and controls an entire electrical distribution system. Engineers, accountants, executives, and technicians can access an almost limitless stream of data for troubleshooting, early warning alarms, power quality studies, preventive maintenance, cost allocation, and facilities planning. ACCESS adds a new dimension to managing energyintensive facilities, allowing identification and correction of potential problems before they cause damage, waste, injury, or downtime. System Overview ACCESS enables users to connect new or retrofitted Siemens Intelligent metering and protective devices in switchboards, switchgear, and motor control centers via a twisted pair of wires, in order to access critical electrical operating information. ACCESS provides a graphical user interface for viewing and reporting information such as real-time, historical, and min/max data on a desktop computer or field-installed industrial computer. The field device network uses an industrystandard RS-485 twisted pair, which has galvanic isolation of up to 500 volts. Siemens SEAbus communications protocol is utilized on the RS-485 high speed LAN. SEAbus is an open protocol with complete documentation allowing users to integrate Siemens devices directly into other customized communications systems. Siemens ACCESS Electrical Distribution Communications System meets ANSI/ IEEE C , C , and RFI / EMI 6241 specifications. Primary Functions Reducing costly down time by identifying system problems well in advance of tripping. Providing data for more efficient allocation of power usage cost, and providing accurate verification of utility billing. Identifying and controlling peak power demand. Allowing actions such as load shedding, changes in billing structure from the utility, or other remedial steps to minimize power cost. Providing data to plan substation expansion needs, such as the ability to know steady-state and momentary percentage of capacity for all breakers and transformers. Providing data that allows the user to analyze the quality of power, such as harmonics and disturbances (surges and sags), and this data can be used for diagnostics, reporting, or other tracking purposes. ACCESS-Compatible Devices From Siemens Look For This Symbol... Table 1.1 below lists Siemens devices which are ACCESS "savvy". Table 1.1 ACCESS Field Level Device Cross Reference Category Protective Relays and Trip Units Metering Motor Protection and Control Relays I/O Devices Monitoring Devices This symbol will appear with products which tie into the ACCESS system. Model Static Trip IIIC/IIICP/IIICPX - LV Power Breakers Type SB Encased Systems Breakers SB Energy Communicating Trip Unit Sensitrip III Molded Case Circuit Breakers ISGS Protective Relay 9230, 4300, 9240, 9300, 9330, 4700, 4720, 9500 and 9700 Power Meters SAMMS-LV TM SAMMS-MV TM S7-I/O Power Monitor Panel, Local Display Unit (LDU) 4

6 Dimensional Information Main & Feeder Breakers 58 (1473) Standard Depth 60 (1524) & 68 (1727) Optional Depth 3 (76) W2 Conduit Area Top or Bottom 3 (76) 15 (381) 2.5 (64) 40.5 (1029) 90 (2286) 84 (2133) Available Breaker Unit Space W1 Dimensions shown in inches and millimeters ( ). Required Breaker Breaker Frame Size W1 W2 Unit Space Frame Size 1 (400/800/1200 Amp) 25 (635) 19 (483) 14 (356) [1] Frame Size 2 (1600/2000 Amp) 25 (635) 19 (483) 21 (533) [1] Frame Size 3 (2500/3200 Amp) 38 (965) [3] 32 (813) 42 (1067) [2] Frame Size 4 (4000/5000 Amp) 38 (965) [3] 32 (813) 42 (1067)[2] Only one breaker per section can be energized. [1] Frame Size 1 breakers and Frame Size 2 breakers can be mixed in the same stack but each frame size requires 42" of unit space whether it is totally used or not. [2] Can not be mixed with Frame Size 1 or Frame Size 2 breakers in the same stack. [3] Optional 34 inch (864 mm) wide is available. 5

7 Siemens Energy & Automation, Inc. Power Distribution Infrastructure Division 3333 Old Milton Parkway For Nearest Sales Office For Product Information Alpharetta, GA Siemens Energy & Automation, Inc. ACCESS TM, SAMMS-LV TM, SAMMS-MV TM, Static Trip and Sensitrip Order No. SWSA Siemens is a registered trademark of Siemens AG are registered trademarks of Siemens Energy & Automation, Inc. New Specifications are subject to change without notice. 5M0201B&A Printed in U.S.A.

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