1. Product Description (>400 chars)
        The 440V/690V marine switchgear manufactured by our company features a modular design, Functional Unit Compartments, and Cable Compartments. Enclosures utilize 316L stainless steel or powder-coated zinc-plated steel, certified through Class-approved Inclination Tests (±22.5°) and Vibration Tests (5-100Hz/2g). Integrated systems include Generator Protection Relays, Synchronizing Panels, and Energy Monitoring Modules supporting IEC 61850 Remote Monitoring. Critical components withstand 1000-hour Salt Spray Tests (ISO 9227) ensuring reliability in corrosive marine environments.

2. Product Functions (>400 chars)
        Selective Protection: Selective Tripping coordination via Short-Time Delay (STI) and Instantaneous (INST) protection
        Automatic Power Management: Integrated PMS for generator auto-start/stop, load sharing, and priority shedding
        Grid Synchronization: Auto-synchronizers enabling parallel operation within ±2.5° phase difference
        Insulation Monitoring: Continuous Insulation Resistance Monitoring with configurable alarm thresholds (typically 50kΩ)
        Emergency Transfer: Automatic Transfer Switch (ATS) activating backup power within 0.5s during main failure
        Surge Protection: Integrated Type 2 SPDs suppressing switching overvoltages

3. Product Configuration (>400 chars)
Core Components:
        Main Circuit Breaker: Air Circuit Breaker (ACB) with Electronic Trip Unit (ETU) and Modbus communication
        Feeder Circuits: Molded Case Circuit Breakers (MCCB) or Fuse-Switches
        Measurement System: Digital Multifunction Meters monitoring V/I/PF/THD
        Busbar System: Tin-plated copper busbars with ≥50mm phase spacing for 690V systems
        Control Unit: PLC controllers (Siemens S7-1200/Schneider Modicon) for logic operations
        Safety Interlocks: Dual Mechanical & Electrical Interlocks preventing maloperation

Optional Modules:
        Harmonic Filters compliant with IEEE 519
        Arc Fault Detection Devices (AFDD)
        Redundant DC 24V UPS backup power supplies

4. Product Features (>400 chars)
① High-Reliability Design
        Triple isolation design (isolation distance ≥30mm) passing 50kA/1s dynamic/thermal stability tests
        Main busbars rated for 100% continuous current with ≤65K temperature rise (IEC 61439-2)

② Smart Maintenance Support
        Predictive Maintenance systems monitoring breaker contact wear
        Augmented Reality (AR) assistance via QR code-activated 3D schematics

③ Extreme Environment Adaptation
        Anti-condensation Heaters maintaining <85% internal humidity
        Shock/vibration resistance meeting IEC 60068-3 (vertical 5-100Hz/2g vibration)

④ Energy Efficiency Technology
        Low-loss design (<0.1W/pole) certified per IEC TS 63164
        Renewable energy interfaces compatible with solar/fuel cell inputs