24kV embedded pole 1250

Category：

Air insulation series

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Yuan

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Yuan

Number of views:

1000

Product serial number:

EP24/1250-25

Drawing No.:

RZP5.047a

Quantity

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Product description

Parameters

Description

En capsulated Pole Unit is the product that combines the explosion chamber with major loop conductive component and insulated stand accessories reliably. It has strong resistance to filth. It possesses the advantages of simple assembly, high insulated intensity, high reliability, good consistency, maintenance -free and so on. It realized switchge ar miniaturizati on which is the development tendency of medium voltage circuit breaker in recent internal switchgear industry. And this technique is widely used; it has a bright future in electric in dustry.

The encapsulated products which are designed and manufa ctured by our company contains the series of7.2kV、12kV、 24kV、40.5kV. Encapsulated Pole Unit contains mid counters and gas-insulated switchboard which has been passed the whole model tests. We have optimized the design of electric performance, mechanical intensity and other requirements. The product meets the requirements of switchgear industry standard completely, and is used by many famous switchgear companies at home and abroad.

Drawing No.	Specification	Match The Insulated Pull Rod	Match The Radiation Frame
RZP5.047a	EP24/1250-25	RAP4. 028c. 05	RAP4. 047a. 01

Main technical data

Data	Value	Unit
Rated voltage	24	kV
Rated current	1250	A
Rated frequency	50	Hz
Rated short-circuit breaking current	25	kA
Operations of short-circuit breaking current interruption	30	time
Rated short-circuit making current	63	kA
Rated peak withstand current	63	kA
Rated short-time withstand current（4s）	25	kA
Rated single capacitor bank breaking current	630※	A
Rated back-to-back capacitor breaking current	400※	A
Short-time(1min) power-frequency withstand voltage	65	kV
Lighting impulse withstand voltage(peak)	125	kV
Circuit resistance at rated contact force	≤25	μΩ
Mechanical life	10,000	time
Contact closing force due to bellows and atmosphere	100±30	N
Counterforve at rated contact stroke	200±30	N
Contact limit erosion	3	mm
Shelf life	20	year
Partial discharge	≤1	pC
Rated operating sequence	0-0.3s-co-180s-co

Mechanical data of circuit equipped with interrupters

Data	Value	Unit
Rated contact stroke	12±1	mm
Contact connection stroke	3±1	mm
Average opening speed	1.1～1.7	m/s
Average closing speed	0.8～1.2	m/s
Rated operation pressure of contact	2400±200	N
Bounce duration of contact closing	≤2	ms
Out of simultaneity of contact closing and opening	≤1	ms
Max. overtravel	≤2	mm