China Glx24 Series Sf6 Insulated Ring Main Unit

GLX24 series SF6 Insulated Ring Main Unit
GLX24 series Ring Main Unit is an extensible,SF6 insulated switchgear,with rated voltage of 12&24 KV.All it s HV parts are contained in an air-tight gas tank,which is made from stainless steel of 3mm.The whole switching assenbly is SF6 insulated,and free from any external influence,ensuring it great reliability of service and maintenance free.By plug-in type busbar extension,GLX24 series RMU can be free combination and full modularization.The busbar extension has passed type test for power and thermal stability,and is fully insulated and shielded,exhibiting high reliability and safety.GLX24 series Ring Main Unit is suitable for all MV network up to 24 KV,all compact power stations,power distribution substations in all importand industries,such as petrol-chemical industry,metallurgical and mining industries,and all transformer substations ans wind power system.

Description
UnitLBS unitSwitch-fuse unitVCB unitBusbar subsection unitRated voltage
KV 12121212Power frequency withstand voltage(1 min)phase tophase/earthKV 42424242Across the isolating distanceKV48484848Impulse withstand voltagephase tophase/earthKV75,(95)*75,(95)*75,(95)*75,(95)*Across the isolating distanceKV85,(110)*85,(110)*85,(110)*85,(110)*Rated frequencyHz50,6050,6050,6050,60Rated currentA6301630630Rated short circuit breaking currentKA
220,(25)*
Rated short time withstand currentKA/s20/3(20/4,25/1)*
20/3(20/4,25/3)* 20/3(20/4,25/1)*Rated peak withstand currentKA50,(63)*
50,(63)*50,(63)*Rated short circuit making currentKA50,(63)*250,(63)*50,(63)*Rated transfer currentA
1800
Rated active load breaking currentA630
630Rated closed loop breaking currentA630
6305% raed active load braeking currentA31.5
31.5Rated operation sequence

0-0. 3s-CO-180s-CO
Mechnical lifetimeOps50005000100005000Eletrical lifetime
E3
E2E3Thickness of stainless steelmm3.0Rated SF6 pressurekPa30(at 20ºC,101.3kPa)Annual leakage rate≤0.02%Water treatment test12kV 24 hours(at 30 kPa under the waterInternal arc test20kA 1sProtection degreeGas tankIP 67Fuse holderIP 67RMU enclosureIP 4%