Description
GYW1 Air Circuit Breaker
The GYW1 air circuit breaker is available in fixed and draw-out types. The fixed circuit breaker consists of components such as the contact system, arc extinguishing system, operating mechanism, current transformer, intelligent controller, auxiliary switches, secondary connectors, undervoltage release, and shunt trip. The draw-out type, based on the fixed circuit breaker, is equipped with a dedicated draw-out cradle, which includes left and right side plates with guide rails, a base, and a crossbeam.
Contact System:
The contact system adopts a single-stage design, where different parts of the same contact serve dual functions as both the main contact and the arc contact. Utilizing a new arc-resistant contact material, the system prevents excessive heating and temperature rise after interrupting short-circuit currents. The contact system employs multiple parallel paths to reduce electrodynamic repulsion, enhancing the electrical stability of the system.
Arc Extinguishing Chamber:
Each pole is equipped with an arc extinguishing chamber, which isolates the electrodes, provides mutual insulation, and separates them from other parts of the circuit breaker and the operator. The arc extinguishing chambers are entirely housed within the circuit breaker’s insulating base, increasing mechanical strength and ensuring safety.
Operating Mechanism and Manual/Electric Drive Mechanism:
The operating mechanism is located at the front of the circuit breaker and employs a five-link free-trip mechanism designed for energy storage. During operation, the mechanism remains in a pre-stored energy state, enabling instantaneous closing upon receiving a closing command. The release of stored energy can be achieved via a manual release button or a closing electromagnet. The electric drive mechanism is self-contained, with the energy storage shaft and main shaft connected via a concave-convex wedge for easy assembly and disassembly.
Remote Intelligent Control Function:
The intelligent controller supports real-time monitoring of key parameters such as current, voltage, and power, transmitting data to a host computer or monitoring system via communication interfaces (e.g., RS485) for remote status monitoring. Users can remotely operate the circuit breaker’s opening and closing through host computer software or a mobile device app, enabling remote control of the power system and improving operational efficiency. The intelligent controller automatically detects faults, issues alarm signals, and records fault information, facilitating quick identification and resolution of issues.
