SF6 RMU with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc., which can provide the satisfactory technical projects both for different application occasions and users. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, SM66-40.5 unit type SF6 RMU can completely meet the requirement of continuously variable market. It can take self-produced RLS-40.5 load break switch; also according to the demand of users can be assembled with the internationally top-ranking RCB series vacuum circuit breaker with permanent magnetic mechanism made by AREVA or HD4 type SF6 circuit breaker made by AREVA or HD4 type SF6 circuit breaker made by ABB or with our VSC-40.5 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual or electric power driven. And It can meet the requirement of “Four Controls” when matched with FTU and RTU.
| No. | Item | Unit | Parameter |
| 1 | Rated voltage | kV | 36 |
| 2 | Rated frequency | Hz | 50/60 |
| 3 | Rated current | A | 1630 |
| 4 | 1min Power frequency withstand voltage | kV | 80 |
| 5 | Lightning impulse withstand voltage | kV | 195 |
| 6 | Rated short circuit breaking current (peak) | kA | 50/40 |
| 7 | Rated active load/close circuit breaking current | A | 50/40 |
| 8 | Rated transferring current | A | 800 |
| 9 | Rated short circuit making current (peak) | kA | 50/40 |
| 10 | Rated cable(line) charging breaking current | A | 50 and 10 |
| 11 | Cable charge breaking current in earthing fault | A | 50 |
| 12 | Rated withstand current (peak) | kA | 50/40 |
| 13 | Short time withstand current (2s) | kA | 16 |
| 14 | Mechanism life | times | 2000 |
2.OMR unit
The OMR is with option for different application. as a extensible or non extensible RMU.
The OMR comprising of a Tee off vacuum circuit breaker and two fault-make load break ring switches contained within a common SF6 gas insulated stainless steel enclosure.
The OMR unit is suitable for both indoor and outdoor applications and can be used either as a freestanding unit or for mounting to a transformer, complying with iec62271-200
Service environment:
a) Air temperature:Maximum temperature: +40ºC; Minimum temperature:-20ºC
b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level:Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
Standard instruction:
D unit configuration
See standard configuration and features of “Cable connecting module without earth switch module”
C unit configuration
See standard configuration and features of “Load break switch module”
F unit configuration
See standard configuration and features of “Load break switch and fuse combination module”
V unit configuration
See standard configuration and features of ” Vaccum switch module”
Standard combinations also includes belowing configurations:
Voltage indicator of incoming bushing capacitive character SF6 density/pressure monitor( gas meter) with each gas cell Ring for lifting Operating handle.
3.SF6 Gas Insulated Ring Main Unit Switchgear
SHXGN(RMR) type SF6 gas insulated ring main unit is integrating with SF6 infill cabinet which gather with LBS, Fuse, ES, DS, etc.
This product is in conformity with the standards of IEC60420, GB/T11022, GB3804, GB3906
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