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XGN-12 12KV Ring Main Unit - Reliable China Suppliers & Factory for Advanced Distribution Solutions
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: Magnitude 8.
Environment requirement: 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 a rated frequency of 50Hz. It is widely used in industrial and civilian cable ring networks and power supply terminals.
- Particularly suitable for: urban residential areas, industrial and 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) legv 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 (aqv 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) | 630 |
| Rated insulation level | kV | - | - | - |
| Power frequency withstand voltage (phase-phase and phase-ground) | kV | 42 | - | - |
| Power frequency withstand voltage (across isolating distance) | kV | 48 | ||
| Power frequency withstand voltage (control and auxiliary circuit) | kV | 2 | ||
| Lightning impulse withstand voltage (phase-phase and 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 are the standard ambient temperature limits for the SF6 load switch?
The equipment is designed to operate normally within an ambient temperature range of a minimum of -25℃ to a maximum of +40℃.
What is the maximum installation altitude for this modular switch cabinet?
The XGN□-12 modular metal enclosed ring main unit is designed for normal service conditions at an altitude not exceeding 2000 meters.
What is the rated voltage and frequency of the XGN□-12 system?
The system has a rated voltage of 12kV and operates at a rated frequency of 50/60Hz, making it suitable for a wide range of power distribution networks.
What are the main application areas for this ring main unit?
It is widely used in residential areas, industrial/mining enterprises, secondary substations, shopping malls, airports, subways, wind power stations, hospitals, bridges, and tunnels.
What is the mechanical life of the load switch and circuit breaker cabinets?
The load switch cabinet has a mechanical life of 5000 operations, and the circuit breaker cabinet has a mechanical life of 10000 operations.