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Product Overview
In the vanguard of the global energy transition, facilities like green hydrogen production plants and high-speed rail networks consume power on a staggering scale. To minimize massive cable transmission losses, engineers elevate the internal grid to AC 1140V. However, safely managing a 4000A load at this extreme voltage requires a specialized industrial titan. The CHNAILE Motorized 3-Pole Air Circuit Breaker (ACB) is explicitly constructed for this 1140V frontier. Featuring an intelligent microprocessor core and integrated AC 230V motorized actuators, it seamlessly connects to facility SCADA systems for automated grid synchronization. Mounted on an industrial drawout chassis, it ensures maximum operational uptime by allowing technicians to physically isolate and extract the 100kg+ breaker block without de-energizing the primary megawatt busbars.
Technical Parameters
| Device Category: | Ultra-High Voltage Air Circuit Breaker (Universal ACB) |
| Poles Configuration: | 3P (Simultaneous 3-Phase Megawatt Isolation) |
| Rated Current (In): | 4000A (Engineered for relentless, continuous heavy loads) |
| Rated Operating Voltage (Ue): | AC 800V / 1000V / 1140V (Extreme AC distribution limits) |
| Rated Insulation Voltage (Ui): | 1300V (Apex-tier dielectric firewall) |
| Rated Impulse Withstand Voltage (Uimp): | 12kV (Maximum lightning & switching surge immunity) |
| Operation Mechanism: | AC 230V Motorized Drive & Manual Spring Charge |
| Control Core: | Intelligent Microprocessor Trip Unit (Full LSIG Matrix) |
| Installation Architecture: | Drawout / Withdrawable Type (Cradle mounted) |
| Standard Compliance: | GB/T 14048.2 / IEC 60947-2 |
1. Megawatt-Scale Intelligent Defense
Surgical LSIG Network Coordination: Megawatt facilities utilize multi-tiered distribution boards. The digital front panel empowers engineers to precisely program the Long-delay (Overload), Short-delay, and Instantaneous short-circuit thresholds. This guarantees that a localized fault in a single hydrogen electrolysis cell only trips its respective sub-breaker, keeping the 4000A main ACB active and the rest of the plant producing.
Extreme Voltage Arc Annihilation: A dead short at 1140V and thousands of amps produces a terrifying plasma explosion. The ACB’s colossal open-air de-ion arc chutes, aided by powerful magnetic blowouts, violently stretch, cool, and exhaust these extreme-voltage plasmas in milliseconds, preventing the vaporization of the main switchboard.
Automated SCADA Synchronization: Equipped from the factory with an AC 230V motor operating mechanism, closing electromagnets, and shunt releases. This enables the central control room to remotely execute massive grid-tie connections or emergency load-shedding procedures with automated, robotic precision.
2. Heavy-Duty Drawout & Structural Engineering
3-Position Drawout Chassis (In/Test/Out): Routine maintenance in a live power station is lethal. The heavy-duty withdrawable base features a mechanical racking system. Using a dedicated hand crank, maintenance crews can smoothly retract the massive breaker into 'Test' or 'Disconnected' positions, achieving 100% visible, physical galvanic isolation.
1300V Dielectric Thermosetting Armor: Housed in a structurally reinforced, anti-tracking polymer block. The extraordinary Ui 1300V and Uimp 12kV ratings act as an impenetrable dielectric shield, preventing internal flashovers even during violent train-switching transients or severe atmospheric lightning strikes.
Massive Silver-Plated Busbar Interfaces: The rear drawout connections feature giant, high-purity copper blocks heavily plated with silver. This guarantees near-zero electrical resistance and monumental thermal dissipation while routing 4000 Amps of continuous power into hungry industrial rectifiers.
3. Target Application Scenarios
Because of its incredibly rare AC 1140V rating, motorized automation, and massive 4000A footprint, this ACB is exclusively mandated by global EPCs for:
Green Hydrogen Electrolysis Plants: Serving as the ultra-reliable main AC disconnect feeding the massive AC-to-DC rectifier transformers that power the water splitting process.
Heavy-Rail & High-Speed Transit Substations: Providing robust, vibration-resistant power distribution and extreme fault protection for municipal railway traction power networks.
Hydroelectric Power Stations: Acting as the critical main synchronization switch between megawatt river-turbine generators and the step-up transformer grid.
Large-Scale Aluminum Smelting: Managing the ultra-high voltage and relentless continuous current requirements of heavy metallurgical arc furnaces.
4. Global B2B Partnership with CHNAILE Factory
Factory-Direct EPC Procurement: Sourcing ultra-high-voltage motorized ACB switchgear directly from our manufacturing floor eliminates massive international trader margins, providing your engineering firm with a devastating financial advantage in government infrastructure bids.
Exhaustive 1140V FAT Verification: We do not gamble with extreme voltage. Every 4000A unit undergoes brutal thermal imaging, simulated ultra-high voltage short-circuit blasts, and rigorous mechanical racking tests to guarantee absolute IEC 60947-2 compliance before dispatch.
OEM Integration for MDB Builders: We actively partner with elite panel builders worldwide, providing comprehensive technical cradle installation support, customized intelligent controller programming, and bespoke branding for your premium 1140V switchboards.
