I.B. 32-255-1G Page 3Effective 12/02Table 1.2 (ANSI StandardsÀ) Type VCP-W Vacuum Circuit Breaker 27 kV Rated Symmetrical Current BasisIdentification Rated ValuesCircuit Nominal Nominal Voltage Insulation Level Current Inter- Permis- Transient Recovery Voltage Current ValuesBreaker Voltage 3-Phase Maximum Voltage Withstand Test Continuous Short rupting sible E2 t2 Closing CapacitorType Class MVA Voltage Á Range Voltage Current Circuit Time à Tripping Rise and SwitchingClass Factor  at 60 Hz Current Ä Delay Time Latching CableCapability ChargingPower Impulse 3 Second 2.7 K TimesFrequency Short Time Rated(1 Min.) Current ShortCarrying CircuitCapability CurrentE K I YkV MVA kV rms kV rms kV Peak Amperes kA rms Cycles Seconds kV Peak μs kA Peak Amperes270VCP-W750(16) 27 750 27 1.0 60 125 600 16 5 2 51 105 43 31.512002000270VCP-W1000(22) 27 1000 27 1.0 60 125 600 22 5 2 51 105 60 31.512002000270VCP-W1250(25) 27 1250 27 1.0 60 125 600 25 5 2 51 105 68 31.512002000270VCP-W1600(32) 27 1600 27 1.0 60 125 1200 31.5 5 2 51 105 85 31.52000270VCP-W2000(40) 27 2000 27 1.0 60 125 1200 40 5 2 51 105 106 31.52000ÀCESI tested to applicable ANSI Standards C37.04 - 1979, C37.09 - 1979, andC37.06 - 199X. Consult Cutler-Hammer for CESI reports on file. Operating dutycycle CO-15 seconds-CO. Operating time values: opening 33-55 ms, closing50-60 ms and reclosing 18 cycles (300 ms).ÁTesting at 28.5 kV.ÂK=1.0, therefore E = E/K and I = KI. Consult Application Data 32-265 for furtherinformation.ÃOptional interrupting time of 3 cycles is available.ÄAlso maximum interrupting rating.5.955.9510.317.517.517.52727271111111112424424242426060607575959595951251251254050502540502531.5407557575257575250757575575752755750586464626464623136365864646236404913913913997 (2)139139859710440505025405025 (8)32 (7)40 (7)5050505050505050502222222110.90.90.80.90.90.80.90.90.80.950.90.80.90.90.80.90.90.81.11.11.11518—1518—1518—2018—1518—1518—2020203.52.7—3.52.7—3.52.7—3.52.7—3.52.7—3.52.7—4.24.24.2MaxVoltageVVoltageRangeFactorKVoltagePowerFrequency(1 Min.)LighteningImpulse1.2x50usWithstand TestInsulation LevelContinuousCurrent at60 HzSym.Inter-ruptingat V (Isc)% dccompo-nent(Idc)Asym.Inter-rupting(It)Closing&LatchingCapa-bilityShort-TimeCurrentfor3 sec.Short-Circuit CurrentCurrentInter-ruptingTime(1)MaximumPermis-sibleTrippingDelayTransientRecoveryVoltage(RRRV)(3)IsolatedShuntCapacitorBankCurrentGeneralPurposeCapacitorBankCurrentBack to Back Capacitor SwitchingDefinite PurposeCapacitor Switching RatingskHzkA PeakA rmsA rmskV / μsSecondsmskA rmskA PeakkA rms%kA rmsTotalA rmskV PeakkV rmskV rms50 VCP-W 40C50 VCP-W 50C75 VCP-W 50C150 VCP-W 25C150 VCP-W 40C150 VCP-W 50C270 VCP-W 25C270 VCP-W 32C270 VCP-W 40C120020003000120020003000120020003000120020003000120020003000120020003000120016001200160012001600630 (5)1000 (5)—630 (5)1000 (5)—630 (5)1000 (5)—600 (6)1000 (5)(6)—630 (5)(6)1000 (5)(6)—630 (5)(6)1000 (5)(6)—400400400CircuitBreakerTypeMechanicalEnduranceNo-LoadOperationsInrushCurrent InrushFrequency10,00010,0005,00010,00010,0005,00010,00010,0005,00010,00010,0005,00010,00010,0005,00010,00010,0005,0002,5002,5002,500(1) 3 cycles(2) Close & Latch Current for 1200A Type 150 VCP-W 25C is proven at15kV. For sealed interrupters at high altitudes, switching voltage isnot de-rated.(3) For higher RRRV contact Cutler-Hammer for more information.(4) Breaker tested to 2700A single bank switching for momentaryload (Thermal derating must consider harmonic content ofcurrent waveform).(5) Breaker tested to 1270A back to back switching for momentary load(Thermal derating must consider harmonic content ofcurrent waveform).(6) Capacitor Switching Ratings are proven at 15kV. For sealedinterrupters at high altitudes, switching voltage is not de-rated.(7) 1 second(8) 2 secondsIdentifcation Rated ValuesTable 1.3 (ANSI Standards) Type VCP-WC Extra Capability Vacuum Circuit Breaker 5-15 kV Rated SymmetricalCurrent Basis