Sf6 Rmu Mv Gis Ring Main Units And Compact Switchgear Systems Ac Metal - Clad
AC Metal - clad SF6 RMU MV GIS Ring Main Units and Compact Switchgear
Overview
HXGN26-12(F) AC Metal-clad SF6 RMU Switchgear (hereinafter referred to as “RMU”), is designed and researched by our company through absorbing and digesting abroad advanced technology and combining power supply requirements of state.
Features
a. Main switch is FN26-12 SF6 load switch.
b. Three phases are longitudinal arrangement.
c. Two mechanism: manual drive, manual and motor drive.
d. Enclosure: complete aluminum zinc coated steel plate.
e. Reliable five-protection and interlock system.
f. Easy wiring connection of control circuit between cubicles.
Service condition
a. Altitude≤1000m
b. Ambient air temperature: Maximum +40ºC Minimum -35ºC
c. Relative humidity: Diary average value shall be not more than 95%; monthly average value shall be
not more than 90%.
d. Ambient air should be with no corrosion, no apparent pollution with combustible gas and etc.
e. Earthquake prevent function: process ground horizontal acceleration0.2g and vertical
acceleration0.1g at the same time, adopt resonance,sine,whip wave test, safety factor should be more
than 1.67
Parameters
| Name |
Unit |
Parameters |
| Rated Voltage |
kV |
12 |
| Rated Frequency |
Hz |
50 |
| Rated Main Busbar Current |
A |
630 |
| Main Circuit, Earthing Circuit Rated Short-time Withstand Current |
kA/s |
25/2 |
| Main Circuit, Earthing Circuit Rated Peak Withstand Current |
kA |
63 |
| Main Circuit ,Earthing Circuit Rated Short-circuit Making Current |
kA |
63 |
| Full Capacity Breaking Times of Load Switch |
Times |
100 |
| Fuse Breaking Current |
kA |
31.5 40 |
| Service Life |
Times |
10000 |
| 1min Power frequency withstand Voltage (r.m.s) Between Phases, to Earth/ Isolation Distance |
kA |
42/48 |
| Lightning Impulse Withstand Voltage (Peak) Between Phases, to Earthing/ Isolation Distance |
kV |
75/85 |
| Secondary Circuit 1min Power Frequency Withstand Voltage |
kV |
2 |
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