Hydraulic actuator CYTA

for wet environments

Product overview
The CYTA series disc-spring energy-storage hydraulic operating mechanism is a modular, compact actuator designed for circuit breakers with operating energies from 2 kJ to 34 kJ and applicable voltage levels from 252 kV to 1100 kV. Models developed for high-speed interruption on 252 kV and 550 kV breakers demonstrate leading design. The unit features disc-spring energy storage and an integrated hydraulic circuit to provide low pressure loss, high transmission efficiency and stable, reliable operation. Stepless speed regulation and multi-stage buffering ensure smooth action and strong compatibility with breakers. The control valve integrates a signal cylinder enabling flexible adjustment of the C-O time (close-to-open time). Suitable for indoor/outdoor installations, high-altitude sites and offshore wind environments.

Main features

• Modular structure with high parts commonality; compact footprint
• Disc-spring energy storage for fast, reliable response
• Integrated hydraulic circuit with low pressure loss and high transmission efficiency
• Stepless speed regulation and multi-stage buffering for smooth action and strong adaptability
• Integrated signal cylinder on the control valve for flexible C-O time adjustment
• Wide applicability: indoor, outdoor, high-altitude, offshore wind and other demanding conditions

Characteristics / Technical specifications

• Series: CYTA series
• Operating energy: 2 kJ to 34 kJ
• Applicable voltage levels: 252 kV to 1100 kV
• Compatible breakers: hydraulic disc-spring mechanisms for 252 kV and 550 kV high-speed interrupting breakers
• Energy storage: disc-spring
• Hydraulic circuit: integrated hydraulic circuit
• Speed regulation / buffering: stepless speed regulation and multi-stage buffering
• Special integration: signal cylinder integrated in the control valve (adjustable C-O time)
• Operating environments: indoor/outdoor, high altitude, offshore wind etc.