□ Overview ZW6-12 / 630-16 (20) type outdoor vacuum circuit breakers for 12kV and below, the three-phase AC 50Hz power system. Mainly used for urban and rural network and points, co-load current, overload current and short circuit current purposes, can also be used in other similar places, but also as an urban area 12kV level grid disconnect switches. ? □ performance advantages of the ambient air temperature: up to + 40 ℃, the lower limit of -40 ℃; altitude:? <2000m; Relative humidity:? 95% of the average daily little dry, the monthly average of less than 90%; pressure:? Not exceed 700Pa (equivalent to wind speed 34m / s);? air requirements for the degree of contamination by GB5582 lV level;? seismic intensity does not exceed 8 degrees. □ Model meaning ZW 6 - 12/630 - □ | | | | | | ______ rated breaking current | | | | | ____________ rated current | | | | ________________ rated voltage | | | _____________________ Design Number | | ________________________ outdoor | ___________________________ vacuum □ breaker main technical parameters No. Item Unit Parameter 1 Rated voltage kV 12 2 Rated insulation level power frequency withstand voltage dry-wet 34 42 lightning impulse withstand voltage (peak) rated current 753 A 630 4 Rated frequency Hz 50 5 rated short breaking current KA 12.5,16,30 6 rated short-circuit current 31.5,40,50 7 Rated peak withstand current 31.5,50,50 8 Rated short time withstand current 12.5,16,20 nine times the sequence of operations -0.3 points s- combined 10 points combined points -180s- rated short-circuit current breaking number 3011 1000012 mechanical life with a rated operating voltage CT spring operating mechanism V DC24, ACDC110V, 220V 13 contact permission attrition thickness mm 3 14 overcurrent trip Rated current A 5 15 Weight kg 130 (standard) □ Dimensions