Cjw1 Acb Intelligent Universal Circuit Breaker Air Circuit Breaker

Product DescriptionApplication1.CJW1 series intelligent universal circuit breakers could be used fir controlling the low voltage distribution net and keeping it safety. Installing in the   low voltage distribution panels, it works as master switch to play general safety role. lts technical nature has reached the international advanced   standard of that kind of products in 1990s. It suits the circuit of AC 50Hz, rated volage is 660V (690V) or below, rated current 400A-6300A.2.Varied intelligent controller offers various functions. 3.The breakers comply with the demands of the following standards, IEC 60947-2,GB14048.2-2001.Classification1.According to the mounting: fixed and draw-out2.According to the poles: three poles, four poles3.According to the operation ways: motor and manual (maintenance and repair)4.According to the release: inteligent over current controller,under-voltage instantaneous (or delay) release,and shunt release5.The capability of the intelligent over-current controller:   a) classification: H type (normal), M type (normal intelligent), L type (economic)   b) has the function of overload long delay reverse time limit protection   c) single phase earthed protective function   d) indication function: setting current indication, action current indication, each wire voltage indication(should mention as you order).   e)Alarm function   f) Self- diagnostics function   g)Test functionEnvironment condition for operation and installation1.Ambient temperature: -5ºC ~ 40ºC, and average temperature in 24 hours below +35ºC (except for special orders).2.Elevation of installation site: ≤2000m3.Relative humidity: Not exceeding 50% at he maximum ambient temperature of +40ºC. With lower temperature, higher humidity would be permitted,   but the lowest average temperaure in a montn not exceeding +25ºC during the most moist month, and the maximum monthly average relative   numiaty not exceeding 90% in that month, and giving consideration to the dews on the goods surface, which would appear due to temperature   change.4.Pollution protection: 3 degree.5.Installing categories: IV for breaker's main circuits, coils of under voltage release and primary circuit of transformers; III for other auxiliary circuits   and control circuit.6.The breakers used in ships and in humid tropical area can work normally without influence of humid air,salt fog and mildew.7.The breakers used in ships can operate reliably under normal vibration.8.The breaker should be installed according to stipulations in operation manual. For breakers in common use, the vertical gradient is not more than   50, for that used on ships, the vertical gradient is not morethan 22.50.9.The breaker should be put in the place where there is not any explosive medium and conductive dustand no gas, which would corrode metal or    destroy the insulation.10.The breaker should be installed in compartment of switchboard and doorframe should be fixed additionally,protection grade is up to lP40.Product ParametersTechnical data and capabilityTable 1 Rated currentRated frame current Inm ARated current ln A2000(400)630,800,1000,1250,1600,200032002,000,250,029,003,2004000320,036,004,0006300400,050,006,300Table 2 The rated short circuit breaking capability and short time withstand of the breakers, the arcing distance is "zero" (as the outside of the breaker is no arcing.) Rated frame current Inm A2000320040006300Rated limit short circuit breaking capabilitylcu(kA)O-CO400V80100100120690V50657585Rated working short circuit breaking capabilityn x lcu(KA)/Cos∅400V176/0.2220/0.2220/0.2264/0.2690V105/0.25143/0.2165/0.2187/0.2Rated short time withstand lcwlcs(kA)O-CO-CO400V506580100690V40656575Rated short time withstand lcw(kA)---"+0.4s,O-CO400V506565/80(MCR)85/100(MCR)690V405050/65(MCR)65/75(MCR)Notice: The input and out put wire are the same for the breaking of the capability.Table 3 The maximum destroy power is 360W for the breakers, and in the different temperature,and rated lasting current will change. AmbienttemperatureºCRated current400A630A800A1000A1250A1600A2000A40400A630A800A1000A1250A1600A2000A50400A630A800A1000A1250A1550A1900A60400A630A800A1000A1250A1550A1800ATable 4 Intelligent over current controller protection feature and functions The setting and error Long delayShort delayInstantaneousEarthed errorlr1lr2Errorlr3Errorlr4Error(0.4-1)In(0.4-15)In±10%ln-50kA(Inm=2000A)ln-75kA(Inm=3200A)±15%lnm=2000~3200A(0.2-0.8)In(1200A,160A)±10%Notice:lf it has the three steps protection at the same time, the setting will not across.Table 5 Long delay over current inverse time ooperation features I²TL,=(1.51lr1)²tL,and its action time(1.02-2.0) Ir1, has time error is ±15% 1.05Ir11.3Ir11.5Ir1 Setting time S153060120240480>2hno action