Product Overview: What Is the XGN15 Air Insulated RMU?
XGN15-12/24/36 RMU Aislado en Aire (Tipo Fijo), utilizado en tensión nominal 12/24/36kV, corriente nominal 630A y por debajo de la fuente de alimentación en anillo o sistema de alimentación por radiación, especialmente adecuado para subestación preinstalada como control y protección del sistema de alimentación. Este producto está equipado con interruptor de carga de hexafl uoruro de azufre tipo FLN36-12D o interruptor de carga tipo FLRN36-12D y aparatos eléctricos combinados desintegradores, con tamaño pequeño, peso ligero, fácil operación, fuerza de operación ligera, enclavamiento fiable, libre de mantenimiento y otras características, es una nueva generación de aparamenta de alta tensión necesaria para la transformación y construcción de redes eléctricas urbanas.
Este producto cumple con: GB3906 "3~35kV AC metal enclosed Switchgear", GB/T11022 "High voltage switchgear and control equipment standard common technical requirements", IEC298 "rated voltage above 1kV 50kV and below AC metal enclosed switchgear and control equipment", DI/T404 "Indoor AC high voltage switch cabinet ordering technical specifi cations" standard.
Modelo Significado
| X | G | N | 15 | – | 12/24/36 | (F.R) |
| ↓ | ↓ | ↓ | ↓ | | | |
| Tipo de caja | Estacionario | Interior | Número de secuencia del diseño | | Tensión nominal | Aparato combinado seccionador-interruptor de carga |
Installation & Normal Service Conditions
1 Temperatura ambiente del aire: -15℃ ~+40℃ ;
2 Altitud: 1000 m e inferior;
3 Condiciones de humedad:El valor medio diario no es superior a 95%, y la presión media diaria de vapor de agua no es superior a 2,2kPa; El valor medio mensual no es superior a 90, y la presión media mensual de vapor de agua no es superior a 1,8kPA.
4 Intensidad del terremoto: no más de 8 grados;
5 No hay contaminación evidente, como gases turbios o combustibles.
Nota: Cuando se superen las condiciones normales de uso anteriores, el usuario puede negociar con la empresa.
XGN15-12/24/36 RMU con aislamiento de aire (tipo fijo)
| Sr.No. | Descripción | Unidad | Valor |
| 1 | Tensión nominal(Ur) | kV | 12 | 24 | 36 |
| 2 | Corriente nominal(Ir) | A | 630 | 630 | 630 |
| 3 | Frecuencia nominal(fr) | Hz | 50 | 50 | 50 |
| 4 | Tensión nominal de corta duración de resistencia a la frecuencia/1min
(fase-fase y-a-tierra/a través de la distancia de aislamiento) | kV | 28/32 | 50/60 | 70/80 |
| 5 | Tensión nominal soportada a los impulsos de rayo
(fase-fase y-a-tierra/a través de la distancia de aislamiento) | kV | 75/85 | 125/145 | 170/195 |
| 6 | Corriente nominal de corta duración | kA/s | 45741 | 45736 | 45673 |
| 7 | Corriente nominal de pico soportada | kA | 62.5 | 50 | 40 |
| 8 | Corriente nominal de cortocircuito | kA | 62.5 | 50 | 40 |
| 9 | Corriente nominal de corte de transferencia | A | 1700 | 1400 | 630 |
| 10 | Corriente nominal de corte en bucle cerrado | A | 630 | 630 | 630 |
| 11 | Corriente nominal máxima del fusible | A | 200 | 200 | 63 |
| 12 | Interruptor principal Resistencia mecánica | ops | M2(5000) | M2(5000) | M1(1000) |
| 13 | Interruptor de puesta a tierra | ops | M1(2000) | M1(2000) | MO(1000) |
| 14 | Resistencia eléctrica | 1 | Clase E3 | Clase E3 | Clase E3 |
| 15 | Clase IAC | 1 | A-FLR
20kA/1s
25kA/1s | A-FLR
16kA/1s
20kA/1s | A-FLR
16kAV1s |
| 16 | Grado de protección | 1 | IP4X | P4X | IP4X |
Preguntas frecuentes
What is the XGN15 air insulated ring main unit and what is it used for?
The XGN15-12/24/36 is a fixed-type indoor air insulated ring main unit (RMU) designed for rated voltages of 12kV, 24kV, and 36kV, with rated current up to 630A. It is primarily used in ring power supply networks and radial distribution systems for power control and protection. The XGN15 is especially suitable as the high-voltage switching unit inside compact prefabricated substations, making it a standard choice for urban power grid upgrades, residential developments, and industrial distribution networks. For a broader comparison of available RMU types, see our guide on different types of ring main units.
What load switch types are available for the XGN15 RMU?
The XGN15 can be configured with two types of load switches: the FLN36-12D SF6 gas-insulated load switch or the FLRN36-12D load switch and fuse combination unit. Both options offer maintenance-free operation, light operating force, and reliable interlocking. The SF6 load switch is particularly suited to applications requiring long mechanical endurance (up to 5,000 operations at 12kV and 24kV), while the fuse combination unit provides integrated overcurrent protection for transformer feeder circuits. Please specify your preferred switching configuration when submitting your inquiry.
What are the compliance standards for the XGN15-12/24/36 RMU?
The XGN15 ring main unit complies with four key standards: GB3906 (3~35kV AC metal-enclosed switchgear), GB/T11022 (common technical requirements for high-voltage switchgear and control equipment), IEC298 (AC metal-enclosed switchgear for rated voltages above 1kV up to 52kV), and DL/T404 (indoor AC high-voltage switchgear ordering technical specifications). These certifications ensure the product meets both domestic and international procurement and engineering approval requirements. Certified test documentation is available on request.
What are the installation environment requirements for the XGN15 RMU?
The XGN15 is designed for indoor installation in environments meeting the following conditions: ambient temperature between −15°C and +40°C; altitude not exceeding 1000m; relative humidity with daily average not exceeding 95% and monthly average not exceeding 90%; seismic intensity not exceeding Grade 8; and no significant pollution from dust, combustible gases, or corrosive substances. For installations that fall outside these standard conditions — such as high-altitude sites or corrosive industrial environments — please contact our engineering team to discuss customized configurations.
Can the XGN15 RMU be integrated with a prefabricated substation system?
Yes. The XGN15 air insulated RMU is specifically designed to serve as the high-voltage switching and protection unit within compact prefabricated substations (such as the ZBW-12/0.4 European-type outdoor substation). In this configuration, the XGN15 handles ring network switching, fault isolation, and load control on the HV side, while the transformer and low-voltage distribution panel are integrated in the same enclosure. This all-in-one approach reduces installation footprint, simplifies civil works, and speeds up project commissioning. Our technical team can assist with full substation system design from HV ring main unit selection through to LV distribution panel specification.
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