Introduction to PINEELE GTXGN-12 Metal-Clad Switchgear
The PINEELE GTXGN-12 Metal-Clad Switchgear is a medium voltage switchgear system designed for indoor three-phase AC 50/60Hz power networks with a rated voltage of up to 12kV. Engineered to meet the growing needs of modern electrical infrastructure, this metal-clad switchgear offers a compact, modular, and safe solution for energy distribution in power stations, industrial zones, commercial buildings, and renewable energy applications.
Conforming to international standards such as IEC 62271-200 and GB3906, the GTXGN-12 Metal-Clad Switchgear utilizes vacuum circuit breakers, gas-tight compartments, and fully metal-enclosed bus systems. This makes it an ideal choice where space-saving, personnel safety, and reliable service continuity are crucial.
Key Features of PINEELE GTXGN-12 Metal-Clad Switchgear
Fully Metal-Enclosed Structure
- Each functional unit (breaker, busbar, cable, control) is sealed and independently isolated.
- High-level arc-proof construction and IP4X/IP2X protection for personnel safety.
Flexible and Modular Configuration
- Designed for both single bus and double bus systems with optional bypass schemes.
- Handcart-based withdrawable modules for easy maintenance and inspection.
High Dielectric and Mechanical Strength
- Advanced vacuum breaking technology ensures long service life and reduced arc erosion.
- Tested for short-circuit withstand, dielectric strength, and partial discharge immunity.
Enhanced Safety with Interlocks
- Integrated mechanical and electrical interlocks to prevent access during live operation.
- Prevents circuit breaker racking, grounding switch misuse, and door opening under load.
Technical Specifications
| Item | Unit | GTXGN-12 |
|---|---|---|
| Rated Voltage | kV | 12 |
| Rated Frequency | Hz | 50 / 60 |
| Rated Current | A | 630 / 1250 / 1600 / 2000 / 2500 |
| Rated Short-Circuit Breaking Current | kA | 20 / 25 / 31.5 |
| Rated Short-Circuit Making Current (Peak) | kA | 50 / 63 / 80 |
| Rated Short-Time Withstand Current | kA | 20 / 25 / 31.5 (4s) |
| Rated Peak Withstand Current | kA | 50 / 63 / 80 |
| Lightning Impulse Withstand Voltage | kV | 75 / 95 (phase/ground) |
| Power Frequency Withstand Voltage | kV | 42 (1 min) |
| Protection Degree | — | IP4X (enclosure), IP2X (compartments) |
| Mechanical Life (Circuit Breaker) | Times | 10,000 – 20,000 |
| Ambient Temperature | ℃ | -15 to +40 |
| Altitude | m | ≤1000 (custom available) |
| Humidity | % | ≤95% RH |
| Installation Type | — | Indoor |
| Cabinet Size (WxDxH) | mm | 800 × 1500 × 2300 (varies by config) |
Construction Overview
The PINEELE GTXGN-12 Metal-Clad Switchgear is composed of:
- A. Circuit Breaker Compartment
Houses the withdrawable vacuum circuit breaker unit (VS1 or equivalent). - B. Busbar Compartment
Located at the top, fully metal-encapsulated and insulated for high safety. - C. Cable Compartment
Located at the bottom with ample space for terminals, CTs, and surge arresters. - D. Instrument Compartment
Mounted on the front with control relays, meters, and communication terminals.
Advantages of PINEELE GTXGN-12 Metal-Clad Switchgear
- Safe & Sealed Compartments
Metal partitions eliminate arc propagation and enhance operator safety. - Withdrawable Mechanism
Removable breaker trolley for quick replacement and maintenance. - Smart Monitoring Ready
Compatible with SCADA/DCS and equipped with auxiliary contacts and sensors. - Low Maintenance Requirements
Uses maintenance-free vacuum interrupters and dust-sealed compartments. - Customizable Design
Supports local standards, custom busbar designs, and various relay types.
Working Principle and Operation
The GTXGN-12 Metal-Clad Switchgear receives medium-voltage power from incoming feeders and distributes it through outgoing lines via vacuum circuit breakers. Real-time monitoring, remote control, and interlocks ensure that power is reliably switched without exposing operators to live components.
The main breaker handcart can be moved between service, test, and disconnected positions while the switchgear remains energized, ensuring maximum uptime with minimum risk.
Application Benefits
Deploying the PINEELE GTXGN-12 Metal-Clad Switchgear results in:
- Reduced energy losses from partial discharge and poor power factor
- Improved maintenance cycles with modular and easy-access design
- Flexible network configurations including looped and radial grids
- Support for distributed generation, renewable integration, and microgrids
Frequently Asked Questions (FAQ)
1. What’s the difference between metal-clad and metal-enclosed switchgear?
Metal-clad switchgear has each live component enclosed in its own grounded metal compartment, offering higher arc protection and operational safety. In contrast, metal-enclosed types may have shared enclosures without full isolation.
2. Can PINEELE GTXGN-12 be customized for automation and smart grids?
Yes. The switchgear supports integration with SCADA, remote terminal units (RTUs), and intelligent protection relays for smart grid deployment and real-time power monitoring.
3. What industries commonly use Metal-Clad Switchgear?
The PINEELE GTXGN-12 Metal-Clad Switchgear is widely used in:
- Power generation and substations
- Oil & gas industries
- Water treatment plants
- Renewable energy fields
- Metro/railway stations and tunnels
- Industrial plants and commercial complexes
Application Scenarios
The GTXGN-12 Metal-Clad Switchgear is ideal for:
- Industrial automation environments
- Medium-voltage distribution networks
- Commercial buildings and infrastructure
- Wind and solar energy systems
- Transport hubs and underground substations
- Smart city and IoT-ready power systems