Adopts laser welded metal enclosed air chamber, annual SF6 leakage rate below 0.05%. As a fully insulated RMU, no gas refilling is needed within 15 years for outdoor operation.
It is a typical compact ring main unit with independent pluggable inlet & outlet modules. Circuit expansion or fault replacement supports single-module disassembly without full cabinet power cut.
Stable operation range from -40℃ to +65℃, cabinet protection grade IP44, sealed gas tank reaches IP67, suitable for indoor and outdoor harsh working conditions.
Matched with universal density monitors, operating mechanisms and interlocks, perfectly compatible with spare parts system of mainstream imported ring main unit.
| Item | Standard Specification |
|---|---|
| Rated Voltage | 12kV |
| Rated Frequency | 50Hz / 60Hz Optional |
| Incoming Rated Current | 630A |
| Outgoing Rated Current | 200/400/630A Customizable |
| Short-circuit Breaking Current | 20kA / 25kA |
| Standard Circuit Scheme | 2 In 4 Out Ring Main Unit |
| Insulation Medium | SF6 Insulating Gas |
| Mechanical Operation Life | 10,000 Times |
| Executive Standard | IEC 62271 |
This SF6 Ring Main Unit is widely used as power distribution equipment for:
| Comparison Item | Xizi SRM16 SF6 Gas Insulated Ring Main Unit | Conventional Imported RMU |
|---|---|---|
| Sealing Craft | Laser welded integrated tank, ultra-low leakage | Bolt assembly structure, regular pressure inspection required |
| On-site Modification | Single module replacement, no full cabinet power outage | Whole cabinet power off required for circuit transformation |
| Supply Cycle | In stock available, customized order within 7-15 working days | Long overseas delivery lead time |
| Spare Parts Matching | Compatible with mainstream RMU spare parts | Only original official accessories can be used |
| O&M Expense | Long-term maintenance-free for SF6 inflation | Mandatory annual calibration and air tightness inspection |
All SRM16 series ring main units strictly follow IEC 62271 international standard, with complete CNAS laboratory type test report, ISO9001 quality system certification and factory batch inspection records.
A1: The laser welded sealed gas chamber features extremely low leakage rate, no supplementary inflation needed within 15 years under normal operating environment. Only routine biennial density inspection is recommended.
A2: Yes. The electrical parameters and installation dimensions are highly consistent, which can be directly used for old station reconstruction without modifying primary and secondary design drawings.
A3: We provide 3-year factory warranty for the whole machine, free replacement of damaged accessories for non-artificial faults, and remote video installation guidance all the year round.
