Medium Voltage 12kv, 3150A, 40ka Circuit Breakervacuum Arc Extinguishing Chamber Embedded Poleembedded Poles

Basic Info.

Model NO.	VEP368A
Poles Number	3
Type	Circuit Breaker
Function	Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
Certification	ISO9001-2000
Transport Package	Cartons/Pallets
Trademark	Feite Brand
Origin	China
HS Code	8535900090
Production Capacity	600000/Year

Product Description

Vacuum arc extinguishing chamber embedded pole

The epoxy solid sealing pole (also known as the solid seal type vacuum arc extinguishing chamber) is a buffer material outside the vacuum switch tube and then a layer of epoxy resin. It replaces the insulation support and mechanical support of the original circuit breaker, greatly reducing the circuit breaker's parts and volume. With small size, more stable and reliable pressure advantages it realizes the integrated module, and more easy for installation and free-maintenance.

Wuhan Feite brand solid sealed pole of the epoxy resin automatic pressure gel forming process (APG process) the vacuum arc quenching chamber and an upper and a lower outlet seat and current carrying components are encapsulated into a whole. Due to the adoption of the excellent performance epoxy resin material, greatly ensure the products' mechanical, electrical and thermal aging performance, The embedded pole has good vacuum sealing performance. It is reliable and with good resistance to high and low temperature shock and mechanical shock resistance. It has the advantage of maintenance free, compact, easy to install. Epoxy solid sealed pole matching the corresponding indoor and outdoor vacuum circuit breaker or a vacuum distribution device, especially matching in frequency is 50Hz / 60Hz, rated voltage of 12kV, 17.5kV, 24kV, 27.5 kV and 40.5 kV electric power, machinery, chemical industry, metallurgy, mining and other departments operating condition operating frequently places.

Embedded poles for 12KV circuit breaker
VEP368A
VEP3150/12-40

Main Technical Data

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
1.Rated Voltage	12KV
2.Rated Current	3150A/4000A
3.Rated Frequency	50/60Hz
4.Rated Short-circuit Breaking Current	40KA
5.Rated Operations of Short-circuit Breaking Current Interruption	30times
6.Rated Short-circuit Making Current	100ka
7.Rated Short-time Withstand current(4s)	40KA
8.Rated Single Capacitor Bank Breaking Current*	630A
9.Rated back-to-back capacitor bank breaking current*	400A
10.Short-time(1min) power-frequency withstand voltage	48KV
11.Rated Lighting impulse withstand voltage(peak)	85KV
12.Circuit resistance at rated contact force	≤18μΩ
13.Mechanical Life	20,000times
14.Contact Closing Force due to Bellow and Atmospheric	200±50N
15.Counterforce at rated contact force	300±50N
16. Contact Erosion Limit	3mm
17.Shelf Life	20Years
18.Part discharge	≤5pc
19.Rate operating sequence	O-0.3s-CO-180s-CO
MECHANICAL REQUIREMENTS(REF. VCB)
1.Contact Stroke	9±1 mm
2.Contact connection stroke	4±1 mm
3.Average opening speed	1.1±0.2m/Sec
4.Average closing speed	0.6±0.2m/Sec
5.Added contact force	4200±300N
6.Bounce duration of contact closing	≤2ms
7.Out of simultaneity of contact closing and opening	≤1ms
8.Max.overtravel	≤2mm
Notes: 1.Meets or exceeds the electrical endurance requirements of class E2 for auto reclosing duty per IEC 62271-100 and GB 8738-2003.2.* Rated Characteristics to be given on request

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