Description
Transposed Technical Comparison Matrix
| Performance Characteristic / Parameter | Modular Gas-Insulated Medium-Voltage Switchgear Technical Specifications |
| Operational System Voltage (Ur) |
• IEC Standard Ratings: 12 kV – 24 kV – 36 kV • Special High-Voltage Rating: Up to 40.5 kV |
| Power-Frequency Dielectric Withstand Voltage (Ud) |
• Phase-to-Earth / Between Phases: 28 kV (12 kV) | 50 kV (24 kV) | 70 kV (36 kV) | 85 kV (40.5 kV) • Across Isolation Gap: 32 kV (12 kV) | 60 kV (24 kV) | 80 kV (36 kV) |
| Lightning Impulse Withstand Level (Up Peak) |
• Phase-to-Earth / Between Phases: 75 kV_p (12 kV) | 125 kV_p (24 kV) | 170 kV_p (36 kV) | 200 kV_p (40.5 kV) • Across Isolation Gap: 85 kV_p (12 kV) | 145 kV_p (24 kV) | 195 kV_p (36 kV) |
| Rated Operational Frequency (fr) | 50 Hz (60 Hz available upon request) |
| Continuous Load Current Capability (Ir) |
• Single Busbar System: Up to 5000 A (2000 A for alternative gas insulation) • Double Busbar System: Up to 3150 A • Feeder Panels (Inner Cone): Up to 3150 A • Feeder Panels (Outer Cone): Up to 2500 A • Double Feeder Unit (2 X 400 mm): Up to 630 A |
| Short-Time Withstand & Dynamic Peak Ratings |
• Short-Time Withstand Current (Ik / 3 s): Up to 40 kA (25 kA for Double Feeder units) • Peak Making / Dynamic Current (Ip): Up to 100 kA (62.5 kA for Double Feeder units) |
| Vacuum Circuit Breaker Performance Data |
• Short-Circuit Breaking Capacity (Isc): Up to 40 kA (3 s) • Operating Sequence: O – 0.3s – CO – 3min – CO • Operating Speeds: Closing: ~60 ms | Opening: ≤ 45 ms | Total Break Time: ≤ 60 ms • Mechanical & Electrical Endurance: Class C2, E2, M2 (20,000–30,000 normal current operations; 50 full short-circuit current interruptions) |
| Three-Position Disconnector & Earthing Switch |
• Motor Drive Actuation Time: ~18 s (1250 A) / ~20 s (3150 A) • Endurance Classification: Class E0, M1 (2000 mechanical operations) |
| Gas Pressure System & Monitoring |
• Gas Medium Options: SF6 or Alternative Green Gas Mixture • Nominal Filling Pressure: 130 kPa (abs.) at 20°C • Low-Pressure Alarm Threshold: 120 kPa (abs.) |
| Enclosure Ingress Protection Ratings |
• Gas Containment Tanks: IP65 • Low-Voltage Instrument Compartment: IP4X (higher protection options available) |
| Control Auxiliary & Actuation Power Needs |
• Auxiliary Control Voltages: 60 V DC, 110 V DC, or 220 V DC • Spring Charging Motor Demand: Max 260 W • Shunt Opening / Closing Coils: 250 W – 310 W • Disconnector Motor Drive Power: ~180 W • Blocking Magnet / Releases: Blocking Magnet: 10 W | Undervoltage: 11 W | Indirect Overcurrent: 15 W |
| Site Installation & Thermal Limits |
• Ambient Air Temperature: -5°C to +40°C (24-hour average max: +35°C) • Standard Elevation Limit: Up to 1000 m above sea level |
