12kv Center Distance 205mm Embedded Pole (811A)

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vacuum
• Model NO.: 811A
• Poles Number: 3
• Type: Vacuum
• Function: Vacuum
• Certification: ISO9001-2000, CQC
• Warranty: 12 Month
• Rated Valtatge: 12kv
• Rated Current: 630/1250A
• Rated Frequency: 50Hz
• Rated Lighting Impulse Withstand Voltage: 85kv
• Transport Package: Standard Export Packing.
• Specification: Vacuum
• Trademark: ZGVE
• Origin: Wenzhou
• HS Code: 8538900000
• Production Capacity: 180000pieces/Year

Product Description

12KV Center Distance 205mm Solid Sealed Pole(812A) EP-12/630-25





Main Technical Data

Main Technical Data
Rated Voltage	12kV
Rated Current	1250/1600A
Rated Frequency	50Hz
Rated Short-time power frequency withstand voltage(1min)	48kV
Rated Lighting impulse withstand voltage	85kv
Rated short-time withstand current	25/31.5KA
Rated peak withstand current	63/80kA
Rated short-circuit making current	63/80kA
Rated shirt-circuit breking current	25/31.5KA
Breaking operations of rated short circuit breaking current	30times
Rated back-to-back cap acitor breaking current	400A
Rated sigle capacitor bank breaking current	630A
Mechanica life	30000times
Contact closing force due to bellows and atmosphere	100±30N
Counterforce at rated contact stroke	200±30N
Circuit resistance at rated contact force	≤20μΩ
Shelf life	20 years
Contact erosion limit	3mm
Part Discharge	≤2pC
Rated Operating Sequence	O-0.3s-CO-180s-CO
Mechanical Data Required for matched vacuum switchgear
Rated contact stroke	9±1mm
Contact Connection Stroke	4±1mm
Average opening speed	1.1±0.2m/s
Average closing speed	0.8±0.2m/s
Added contact force	3000±200N
Contact bouncing duration at closing operation	≤2ms
Out of simultaneity of contact closing and opening	≤2ms
Max.overtravel	≤2mm

Dimensional Drawing