Professional China CJW1-2500acb Air Circuit Breaker 3poles Air Circuit Breaker

Short Description:

Applications

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.

Varied intelligent controller offers various functions.

The breakers comply with the demands of the following standards, IEC 60947-2, GB14048.2-2001.

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Fast and superior quotations, informed advisers to help you choose the correct merchandise that suits all your requirements, a short generation time, responsible quality control and different services for paying and shipping affairs for Professional China CJW1-2500acb Air Circuit Breaker 3poles Air Circuit Breaker, We are able to customize the solutions according to your needs and we can easily pack it for you when you purchase.
Fast and superior quotations, informed advisers to help you choose the correct merchandise that suits all your requirements, a short generation time, responsible quality control and different services for paying and shipping affairs for China Acb and Circuit Breaker, Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound solutions with good logistics service and economical cost. Depending on this, our solutions are sold very well in the countries in Africa, the Mid-East and Southeast Asia.

Classification

According to the mounting: fixed and draw-out
According to the poles: three poles, four poles
According to the operation ways: motor and manual (maintenance and repair)
According to the release: inteligent over current controller,under-voltage instantaneous (or delay) release,and shunt release
The capability of the intelligent over-current controller:
classification: H type (normal), M type (normal intelligent), L type (economic)
has the function of overload long delay reverse time limit protection
single phase earthed protective function
indication function: setting current indication, action current indication, each wire voltage indication(should mention as you order).
Alarm function
Self- diagnostics function
Test function

Environment Condition for Operation and Installation

Ambient temperature: -5℃ ~ 40℃, and average temperature in 24 hours below +35℃ (except for special orders).
Elevation of installation site: ≤2000m.
Relative humidity: Not exceeding 50% at he maximum ambient temperature of +40℃. With lower temperature, higher humidity would be permitted, but the lowest average temperaure in a montn not exceeding +25℃ 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.
Pollution protection: 3 degree.
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.
The breakers used in ships and in humid tropical area can work normally without influence of humid air,salt fog and mildew.
The breakers used in ships can operate reliably under normal vibration.
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.
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.
The breaker should be installed in compartment of switchboard and doorframe should be fixed additionally,protection grade is up to lP40.

Technical Data and Capability

Rated current Table 1
Rated frame current Inm A					Rated current ln A
2000					(400)630,800,1000,1250,1600,2000
3200					2000,2500,2900,3200
4000					3200,3600,4000
6300					4000,5000,6300

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.)Table 2

Rated frame current Inm A		2000	3200	4000	6300
Rated limit short circuit breaking capability lcu(kA)O-CO	400V	80	80	100	120
Rated limit short circuit breaking capability lcu(kA)O-CO	690V	50	50	75	85
Rated working short circuit breaking capability n x lcu(KA)/COS∅	400V	176/0.2	176/0.2	220/0.2	264/0.2
	690V	105/0.25	105/0.25	165/0.2	187/0.2
Rated short time withstand lcw lcs(kA)O-CO-CO	400V	50	50	80	100
Rated short time withstand lcw lcs(kA)O-CO-CO	690V	40	40	65	75
Rated short time withstand lcw (kA)———”+0.4s,O-CO	400V	50	50	65/80(MCR)	85/100(MCR)
Rated short time withstand lcw (kA)———”+0.4s,O-CO	690V	40	40	50/65(MCR)	65/75(MCR)
Notice: The input and out put wire are the same for the breaking of the capability.

The maximum destroy power is 360W for the breakers, and in the different temperature,and rated lasting current will change.Table 3

Ambient temperature℃	Rated current
Ambient temperature℃	400A	630A	800A	1000A	1250A	1600A	2000A
40	400A	630A	800A	1000A	1250A	1600A	2000A
50	400A	630A	800A	1000A	1250A	1550A	1900A
60	400A	630A	800A	1000A	1250A	1550A	1800A

Intelligent over current controller protection feature and functions The setting and error.Table 4

Long delay	Short delay		Instantaneous		Earthed error
lr1	lr2	Error	lr3	Error	lr4	Error
(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.

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%. Table 5

1.05Ir1	1.3Ir1	1.5Ir1 Setting time S	15	30	60	120	240	480
＞2hno action	＜1h action	2.0Ir Setting time S	8.4	16.9	33.7	67.5	135	270

product-description1 product-description2 Fast and superior quotations, informed advisers to help you choose the correct merchandise that suits all your requirements, a short generation time, responsible quality control and different services for paying and shipping affairs for Professional China CJW1-2500acb Air Circuit Breaker 3poles Air Circuit Breaker, We are able to customize the solutions according to your needs and we can easily pack it for you when you purchase.
Professional China China Acb and Circuit Breaker, Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound solutions with good logistics service and economical cost. Depending on this, our solutions are sold very well in the countries in Africa, the Mid-East and Southeast Asia.