1. XGN15-12 Fixed-type Switchgear Product Overview
        The XGN15-12 is a metal-enclosed fixed-type switchgear featuring modular design, compliant with IEC 62271-200. The enclosure utilizes a welded cold-rolled steel structure, internally divided into four segregated compartments: circuit-breaker compartment, busbar compartment, cable compartment, and relay/instrument compartment, providing Internal Arc Fault protection (IAC-AFLR Class) via metal partitions. The primary switching device can be a fixed-mounted Vacuum Circuit Breaker (VCB) or SF6 Load Break Switch (LBS). It supports cable terminations, metering, and protection functions, suitable for ring main unit (RMU) and radial feeder applications.

2. XGN15-12 Fixed-type Switchgear Product Functions
        Main Circuit Switching: Load and short-circuit current interruption via Vacuum Circuit Breaker (VCB).
        Protection: Integrated overcurrent, short-circuit, and earth fault protection (when used with Protection relays).
        Isolation & Earthing: Equipped with Disconnector (Isolator) and Earthing Switch (Earth Switch) for safe maintenance.
        Measurement & Monitoring: Provisions for Current Transformers (CTs) and Voltage Transformers (VTs) for metering and condition monitoring.
        Five Safety Interlocking Mechanisms:
        Prevent disconnector operation under load.
        Prevent incorrect circuit-breaker operation.
        Prevent earthing switch closure on energized circuits.
        Prevent circuit energization with earthing switch closed.
        Prevent access to live compartments.

3. XGN15-12 Fixed-type Switchgear Product Features
        High Safety: Type-tested according to IEC 62271-200 with Internal Arc Fault Classification (IAC Class).
        Modular Design: Supports flexible configuration schemes (incoming/outgoing feeder, metering, VT, etc.).
        Maintenance-Free Primary Switch: Vacuum Circuit Breaker utilizes solid-insulated poles (sealed encapsulation), eliminating leakage risks.
        Visual Indication: Mechanical viewing windows for disconnector/earthing switch position.
        Strong Expandability: Can be equipped with SCADA interface for remote monitoring.
        Environmental Compatibility: SF6-free (for VCB version), aligning with green grid initiatives.

XGN15-12 Fixed-type Switchgear Detailed Product Parameters
        Parameter: Specification
        Insulation Medium r: Air
        Rated Frequency r:50Hz
        Main Busbar Current Ratingr: ≤ 3150A
        Branch Busbar Current Ratingr: ≤ 3150A
        Short-Time Withstand Current (3s)r: 25kA, 31.5kA
        Peak Withstand Currentr: 63kA, 80kA
        Mechanical Endurancer: Circuit Breaker: ≥ 10,000 operations; Disconnector/Earthing Switch: ≥ 2,000 operations
        Operating Mechanism r: Spring-operated
        Ambient Temperature Ranger: -15°C to +40°C
        Relative Humidityr: ≤ 95% (daily average), ≤ 90% (monthly average)

XGN15-12 Fixed-type Switchgear Model & Dimensions
       Model Designation: XGN15-12(F)/□
       F: Equipped with Vacuum Circuit Breaker (VCB).
       □: Scheme number (e.g., 01, 21).
       Standard Dimensions (W × D × H): 800/1000mm × 1500mm × 2300mm (Customizable).