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Product Introduction:
· General
This RMU switchgear using SF6 as arc extinguishing medium with double open contacts, 3 working-position and rotating contact which placed in an epoxy resin shell of a reinforced structure. Each gas box must pass helium leak detection before being filled with 0.045Mpa SF6 (Inspect any leakage to ensure can be installed vertically or horizontally). The classic installation is "horizontal", that is, install steel partitions between the cable compartment and the busbar compartment. That makes the interval between the busbar and the cable joint the most stringent safety requirements.
· Standard
ISO 780-1997,MOD.
IEC 62271-102:2002,MOD
IEC 60265-1:1998,MOD
IEC 60298:1990
IEC 60529:1989
IEC 507:1991
IEC 60694:1996
IEC 60420:1990
· Service environment
Air temperature: -35℃~+40℃
Humidity: Monthly average 95%; Daily average 90% .
Altitude :≤ 1000m (Up to 5000 m can be custom)
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
No frequent violent shake
Technical Data
No. Item Unit Parameter Cabinet size 1 Rated voltage kV 12 24 12kV 2 Rated frequency Hz 50/60 Load switch Low voltage Circuit breaker cabinet compartment cabinet 3 Rated current A 630/1250 mm mm mm 4 1min Power frequency withstand voltage kV Alternate/ 42 65 W*D*H H W*D*H Phase to ground Primary isolation 48 79 375/500/750 350/450 800 * * 1000 1000 * * 1635/1885 2000 5 Lightning impulse withstand voltage kV Alternate/ 75 125 24KV Phase to ground Primary isolation 85 145 Load switch Low voltage Circuit breaker cabinet compartment cabinet 6 Rated short circuit breaking current KA Main circuit 20 20 mm mm mm Ground loop 20 17.4 W*D*H H W*D*H 7 Rated short-circuit withstand current duration S 4 4 600 710 800 * * 1130 1000 * * 2000 2000 8 Rated peak withstand current kA 50 50 Optional components：Electric operating-AC 220/110V; DC 24/48/110/220V 9 Transfer current A 1700 1200 10 Protection class ＞IP3X Auxiliary contact 5 NO 5 NC 11 Mechanical life of load switch ＞5000 times Full set of fuse 12 Mechanical life of earthing switch ＞2000 times FTU communication interface
