WL Circuit Breakers - Siemens

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Functional Overview of Trip Unit System WL Circuit Breaker Basic Functions ETU748 ETU755 ETU776 Long-time overcurrent protection P P P Function can be switched ON/OFF – – – Setting range IR = In x … 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.8, 0.9, 1 0.4 … 1 (step: 1A) 0.4 … 1 (step: 1A) In L Switch-selectable overload protection (I N S I G 2t or I 4t dependent function) P P(via communications) P Setting range of time delay class 2, 3.5, 5.5, 8, 10, 2 … 30 (step: 0.1s) 2 … 30 (step: 0.1s) tR at I 2t (seconds) 14, 17, 21, 25, 30 Setting range of time delay tR at I 4t (seconds) 1, 2, 3, 4, 5 1 … 5 (step: 0.1s) 1 … 5 (step: 0.1s) Thermal memory P (via slide switch) P (on/off via communications) P (on/off via key pad or communications) Phase loss sensitivity at tsd =20ms (M) P (on/off via communications) P (on/off via key pad or communications) Neutral protection – P P Function can be switched ON/OFF N-conductor setting range P (via slide switch) P (via communications) P (via keypad or communications) IN = In x … Short-time delayed overcurrent 0.5, 1, OFF 0.5, 1, OFF 0.5 … 2, OFF protection P P P Function can be switched ON/OFF – P (via communications) P(via key pad or communications) Setting range Isd = In x … 1.25, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12 1.25 … 0.8 x Icw = max (step: 10A) 1.25 … 0.8 x Icw = max (step: 10A) Setting range of time delay tsd , fixed (seconds) Switch-selectable short-time delay short-circuit protection M, 0.1, 0.2, 0.3, 0.4 M,0.08 … 0.4,OFF (step:0.001s) M,0.08… 0.4,OFF (step:0.001s) (I 2t dependent function) Setting range of time delay P (via rotary switch) P (via communications) P(via key pad or communications) tsd at I 2t (seconds) Zone Selective Interlocking (ZSI) function Instantaneous overcurrent 0.1, 0.2, 0.3, 0.4 per CubicleBUS module 0.1 … 0.4 (step: 0.001s) per CubicleBUS module 0.1 … 0.4 (step: 0.001s) per CubicleBUS module protection P P P Function can be switched ON/OFF, Extended Instantaneous Protection is enabled when OFF – P (via communications) P (via key pad or communications) Setting range Ii = In x … – Ii = Icw = EIP 1 1.5 xIn…0.8 x Ics = max, OFF=Icw=EIP 1.5 xIn…0.8 x Ics = max, 1 OFF=Icw=EIP Ground fault protection 2 O (field install. module) O (field install.module) O (field install.module) Trip and alarm function P P (via communications) P(via key pad or communications) Detection of the ground fault current by residual summing method Detection of the ground fault current P P P by direct sensing method P P P Setting range of the Ig for trip Setting range of the Ig for alarm Setting range of the time delay tg (seconds) Switch-selectable A, B, C, D, E A, B, C, D, E 0.1, 0.2, 0.3, 0.4, 0.5 A … E (step: 1A) A … E (step: 1A) 0.1 … 0.5 (step: 0.001s) A … E (step: 1A) A … E (step: 1A) 0.1 … 0.5 (step: 0.001s) ground fault protection ( I 2t / fixed) P P P Setting range time delay tg at I 2t 0.1, 0.2, 0.3, 0.4, 0.5 0.1 … 0.5 (step: 0.001s) 0.1 … 0.5 (step: 0.001s) `ZSI ground function per CubicleBUS module per CubicleBUS module per CubicleBUS module 1 Extended Instantaneous Protection (EIP) allows the WL breaker to be applied at the withstand rating of the breaker with minus 0% tolerance; that means no instantaneous override whatsoever. EIP further enables the circuit breaker to be applied up to the full instantaneous rating of the breaker on systems where the available fault current exceeds the withstand rating. 2 Ground Fault Module cannot be removed after installation. Notes: M = Indicates phase loss sensitivity is enabled. LT pickup reduced 80% when phase unbalance > 50%. ST delay = 20ms Communications = Setting the parameters of the trip unit via the Breaker Data Adapter, PROFIBUS/MODBUS Key pad = Direct input at the trip unit 2/5 P available – not available O optional WL PROFIBUS/MODBUS Communication and Electronic Accessories
Functional Overview of Trip Unit System WL Circuit Breaker WL PROFIBUS/MODBUS Communication and Electronic Accessories P available – not available O optional SECTION 2 Basic Functions ETU748 ETU755 ETU776 Parameter sets Selectable between parameter set A and B – P P LCD LCD, alphanumeric (4-line) O – – LCD, graphic – – P Communication CubicleBUS integrated P P P Communication capability via PROFIBUS/MODBUS P P P Metering function Voltage, Power, Harmonics and Parameterization P P P Display by LED Trip unit active P P P Alarm P P P ETU error P P P L trip P P P S trip P P P I trip – P P N trip P P P G trip P (only with ground fault module) P (only with ground fault module) P (only with ground fault module) G alarm P (only with ground fault module) P (only with ground fault module) P (only with ground fault module) Tripped by extended protection or protective relay function P P P Communication P P P Signal contacts with external CubicleBUS modules (Opto or relay) Overcurrent warning P P P Load shedding ON/OFF P P P Early signal of long-time trip (200 ms) P P P Temperature alarm P P P Phase unbalance P P P Instantaneous trip P P P Short-time trip P P P Long-time trip P P P Neutral conductor trip P P P Ground fault protection trip P (only with ground fault module) P (only with ground fault module) P (only with ground fault module) Ground fault alarm P (only with ground fault module) P (only with ground fault module) P (only with ground fault module) Auxiliary relay P P P ETU error P P P 2/6
Page 1 and 2: Answers for industry. PROFIBUS and
Page 3 and 4: Communication-capable Circuit Break
Page 5 and 6: Introduction and Overview WL Circui
Page 7 and 8: Overview of the Bus Systems WL Circ
Page 9 and 10: Communicating with the Circuit Brea
Page 11 and 12: WL Circuit Breaker General Descript
Page 13 and 14: The CubicleBUS WL Circuit Breaker T
Page 15: Functional Overview of Trip Unit Sy
Page 19 and 20: COM15 (PROFIBUS) / COM16 (MODBUS)Mo
Page 21 and 22: COM15 (PROFIBUS) / COM16 (MODBUS) M
Page 23 and 24: COM15 (PROFIBUS) / COM16 (MODBUS) M
Page 25 and 26: Metering Function WL Circuit Breake
Page 27 and 28: Metering Function WL Circuit Breake
Page 29 and 30: Functions/Parameters for Communicat
Page 31 and 32: External CubicleBUS Modules WL Circ
Page 45 and 46: External Power Consumption WL Circu
Page 47 and 48: PROFIBUS Communication with WL Circ
Page 49 and 50: Integration into an Automation Syst
Page 55 and 56: PROFIBUS Profile WL Circuit Breaker
Page 57 and 58: Data Transmission via DPV1 WL Circu
Page 59 and 60: Diagnostic WL Circuit Breaker Binar
Page 61 and 62: Diagnostic WL Circuit Breaker The f
Page 63 and 64: Diagnostic WL Circuit Breaker Struc
Page 65 and 66: Programming Samples WL Circuit Brea
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Certification WL Circuit Breaker Fi
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MODBUS Profile for WL Circuit Break
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Integration into Supervisory System
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Supported Function Codes WL Circuit
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Exception Responses WL Circuit Brea
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Default Register List WL Circuit Br
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Default Register List WL Circuit Br
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WL Configurator WL Circuit Break WL
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Breaker Data Adapter (BDA) Breaker
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BDA/BDA Plus Description WL Circuit
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System Requirements WL Circuit Brea
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Connecting the BDA WL Circuit Break
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Communication via Serial Interface
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Communication via Ethernet Interfac
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Operating Instructions WL Circuit B
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Troubleshooting WL Circuit Breaker
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Siemens & Automation, Inc. 3333 Old
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WL Circuit Breakers - Siemens

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