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China XGN-12 12KV Ring Main Unit - Quality Metal Enclosed RMU from Trusted Suppliers & Factory
Model Meaning
SF6 Load switch
Modular switch cabinet
Normal Service Condition
- Altitude: Not exceeding 2000m;
- Ambient temperature: Minimum temperature -25℃, maximum temperature +40℃;
- Ambient humidity: Daily average not exceeding 95%; monthly average not exceeding 90%;
- Seismic resistance: Class 8;
- There should be no explosive or corrosive gas in the ambient air, and no severe vibration or impact in the installation site.
Main Purpose
- The XGN□-12 modular metal enclosed ring main unit is suitable for power systems with a rated voltage of 12kV and rated frequency of 50Hz, and is widely used in industrial and civilian cable ring networks and power supply terminals.
- The XGN□-12 modular metal enclosed ring main unit is particularly suitable for the following places: urban residential areas and industrial/mining enterprise power distribution, small secondary substations, switching stations, box-type substations, shopping malls, airports, subways, wind power generation, hospitals, sports venues, railways, bridges, tunnels, etc.
Reference Standard
GB/T 191
Packaging-Pictorial Marking for Handling of Goods (ISO 780-111997, MOD)
GB 1985-2004
High-voltage alternating-current disconnectors and earthing switches (IEC 62271-102:2002, MOD)
GB 3804-2004
High-voltage alternating current switches for rated voltage above 3.6 KV and less than 40.5 KV (IEC 60265-1:1998, MOD)
GB 3906-1991
A.C. metal-enclosed switchgear for rated voltages of 3~35kV (neg IEC 60298:1990)
GB 4208-1993
Degrees of protection provided by enclosure (IP code) (eqv IEC 60529:1989)
GB/T 5582-1993
External insulation pollution classes of high-voltage electric power equipments (eqv IEC 507:1991)
GB/T 6388
Transport package shipping mark
GB 9969.1
General principles for preparation of instructions for use of industrial products
GB/T 11022-1999
Common specifications for high-voltage switchgear and controlgear standards (eqv IEC 60694:1996)
GB/T 11023-1989
Test method of SF6 gas tightness for high-voltage switchgear
GB/T 13384
General specifications for packagings of mechanical and electrical products
GB/T 14436
General principles of industrial product guarantee documents
GB 16926-1997
High-voltage Alternating Current Switch-fuse Combinations (eqv IEC 60420:1990)
JB/T 8754-1998
Method for Model Compilation of High Voltage Switchgear
DL/T 404-1997
Technical Conditions for Ordering Indoor Ac High Voltage Switchgear (neq IEC 60298:1981)
Main Technical Parameters
| Item name | Unit | Load switch cabinet | Combination electrical cabinet | Circuit breaker cabinet |
|---|---|---|---|---|
| Rated voltage | kV | 12 | ||
| Rated frequency | Hz | 50/60 | ||
| Rated current | A | - | - | - |
| Main busbar | A | 630 | ||
| Branch busbar | A | 630 | 125 (depending on fuse rated current) | 630 |
| Rated insulation level | kV | - | - | - |
| Power frequency withstand voltage (phase-phase & phase-ground) | kV | 42 | - | - |
| Power frequency withstand voltage (across isolating distance) | kV | 48 | ||
| Power frequency withstand voltage (control & auxiliary circuit) | kV | 2 | ||
| Lightning impulse withstand voltage (phase-phase & phase-ground) | kV | 75 | ||
| Lightning impulse withstand voltage (across isolating distance) | kV | 85 | ||
| Rated short-time withstand current (r.m.s) | kA | 20 | - | 25 |
| Main circuit | kA | 50 | - | 63 |
| Ground circuit | kA | 50 | 80 | 63 |
| Rated peak withstand current (peak) | kA | - | 31.5 | 25 |
| Rated short-circuit making current (peak) | A | - | 1750 | - |
| Rated short-circuit breaking current | A | 630 | - | - |
| Rated transfer current | A | 630 | - | 630 |
| Rated active load breaking current | A | 10 | - | 15 |
| Rated closed-loop breaking current | - | IP3X | ||
| Rated cable charging breaking current | Time | - | - | - |
| Protection level | - | 5000 | 5000 | 10000 |
| Mechanical life | - | 2000 | 2000 | 2000 |
| Load switch | - | - | - | - |
| Ground switch | - | - | - | - |
Frequently Asked Questions (FAQ)
What is the rated voltage of the XGN□-12 modular ring main unit?
The rated voltage of the XGN□-12 modular metal enclosed ring main unit is 12kV, with a rated frequency of 50/60Hz.
What are the normal environmental conditions for installing this switchgear?
It requires an altitude not exceeding 2000m, ambient temperatures between -25℃ and +40℃, and daily average humidity below 95% (monthly average below 90%). The site must also have a seismic resistance class of 8 and be free from explosive or corrosive gases.
Where is the XGN□-12 modular switch cabinet typically applied?
It is highly suitable for urban residential areas, industrial and mining power distribution, small secondary substations, shopping malls, airports, subways, wind power generation stations, hospitals, railways, and tunnels.
What is the protection level of this equipment?
The cabinet provides an IP3X protection level to ensure safe and reliable operation in diverse industrial environments.
What is the mechanical life of the circuit breaker cabinet compared to the load switch?
According to the technical specifications, the circuit breaker cabinet has a mechanical life of 10,000 operations, while the load switch cabinet is rated for 5,000 operations.