Introduction to XGN15-12~24 Ring Main Unit by PINEELE
The PINEELE XGN15-12~24 Ring Main Unit (RMU) is a fixed-type, air-insulated, medium-voltage switchgear system developed for modern distribution networks. Designed to accommodate rated voltages of 12kV or 24kV and a maximum current of 630A, this advanced RMU solution is tailored for high-performance operation in industrial facilities, commercial centers, substations, and urban grid renovation projects.
Using advanced SF6 load switches or vacuum switches, the PINEELE Ring Main Unit ensures reliability, modularity, safety, and expandability. Each unit is constructed with robust armored metal housing, ensuring optimal mechanical strength and insulation while meeting the IEC60420 standard.
Key Features of the PINEELE XGN15-12~24 Ring Main Unit
- Modular Flexibility: Fully modular design allows seamless extension and integration into new or existing systems.
- Compact & Efficient: Integrated three-position rotary load switch reduces components and improves switching safety.
- High Reliability: Corrosion-resistant operating mechanisms and self-lubricating bearings ensure a long maintenance-free life.
- Automation Ready: Supports electric drive units and SCADA compatibility for remote monitoring and control.
- User-Friendly Interface: Intuitive single-line diagrams and analog displays for operational status.
- Safety First: Five-position mechanical interlocking system prevents human error during operation or maintenance.
Technical Specifications of PINEELE XGN15-12~24 Ring Main Unit
Main Technical Data
| Rated Specification | Unit | 12kV | 24kV |
|---|---|---|---|
| Rated Frequency | Hz | 50/60 | 50/60 |
| Main Busbar Current | A | 630 | 630 |
| Branch Busbar Current | A | 630 | 630/≤100② |
| Power Frequency Withstand Voltage (Phase-to-Ground) | kV | 42 | 65 |
| Lightning Impulse Withstand Voltage (Phase-to-Ground) | kV | 75 | 85 |
| Rated Short-time Withstand Current | kA | 20/3s | 25/2s |
| Rated Peak Withstand Current | kA | 50 | 63 |
| Short-Circuit Breaking Current | kA | 31.5 | 31.5 |
| Active Load Breaking Current | A | 630 | 630 |
| Cable Charging Breaking Current | A | 10 | 25 |
| Protection Degree | – | IP3X | IP3X |
| Mechanical Life (Load Switch) | Times | 5000 | 3000 |
| Mechanical Life (Grounding Switch) | Times | 2000 | 2000 |
Notes: ① Up to the fuse rated current
② Load switch-fuse combination cabinet
Operating Conditions
- Temperature Range: -15°C to +40°C
- Altitude: ≤1000m
- Relative Humidity: ≤95% daily average
- Vapor Pressure: ≤2.2kPa daily / ≤1.8kPa monthly
- Seismic Tolerance: ≤Magnitude 8
- Environment: Free of corrosive or flammable gases
Detailed Structure of the XGN15-12~24 Ring Main Unit
1. Busbar Compartment
- Located in the upper section.
- Connected main busbars run through the entire cabinet row.
2. Load Switch Room
- SF6-filled epoxy resin cast columns ensure superior insulation.
- Optional SF6 gas density meters or alarm-enabled meters are available.
3. Cable Compartment
- Spacious design facilitates lightning arrester, CTs, grounding switches, etc.
4. Low-Voltage Control Room
- Houses spring operating mechanisms, keylocks, trip coils, and auxiliary contacts.
- Dual control chambers in wider cabinets for accessory expansions.
5. Interlock Mechanisms
- Five-position interlocks prevent incorrect switching sequences.
Why Choose PINEELE’s XGN15-12~24 Ring Main Unit?
- Trusted Reliability: Built with high-precision components for long-term performance.
- Custom Options: Configurable per project needs – contact our team for tailored RMU units.
- Global Standards: Complies with IEC60420 and other international electrical codes.
- Compact Excellence: Perfect for space-limited substations or densely populated urban projects.
Ordering Guide
To ensure a smooth customization and installation process, please provide:
- Main circuit diagram and busbar configuration.
- Required switchgear dimensions.
- Desired accessories and quantity.
- Any custom modifications or special environmental conditions.
Common Questions About PINEELE Ring Main Unit (RMU)
Q1: What is the advantage of using SF6 gas in PINEELE Ring Main Units?
A: SF6 gas provides excellent dielectric insulation and arc-quenching properties, significantly enhancing the safety and operational reliability of the Ring Main Unit under high-voltage switching conditions.
Q2: Can the XGN15-12~24 Ring Main Unit support remote control and automation?
A: Yes, the PINEELE RMU supports motorized mechanisms and can be integrated into SCADA systems or other automation networks for remote monitoring and real-time control.
Q3: Is the PINEELE RMU suitable for outdoor applications?
A: The standard XGN15-12~24 RMU is designed for indoor use. However, with customized enclosures and IP upgrades, it can be adapted for protected outdoor environments. Please contact us for tailored outdoor solutions.
Applications of the PINEELE XGN15-12~24 Ring Main Unit
PINEELE’s Ring Main Unit is widely deployed in:
- Urban Power Grids
- Pre-Fabricated Substations
- Industrial & Mining Facilities
- Commercial Centers and Shopping Complexes
- Transportation Infrastructure (Rail, Airports, Ports)
- Renewable Energy Microgrids and Wind Farms
- Institutional Facilities such as Universities and Hospitals
The XGN15-12~24 RMU by PINEELE provides an ideal solution where medium-voltage reliability, compact layout, and flexible configuration are essential.