| Brand | ROCKWILL |
| Model NO. | HVR-63 Series Generator circuit-breakers |
| Rated voltage | 24kV |
| Rated normal current | 8000A |
| Rated frequency | 50/60Hz |
| Rated short circuit breaking current | 63kA |
| Series | HVR-63 Series |
Overview
The HVR-63 generator circuit-breaker (GCB) is the latest generation of well-proven HGI generator circuit-breaker series and it is best suited for retrofit in power plants with a unit power of up to 180 MW. The open design and small footprint make it perfect for systems with open busbar and short-circuit ratings up to 63 kA. Our innovative built-in direct contact ablation display offers the highest degree of safety and reliability for power plants with frequent switching operations such as pumped storage power plants. The HVR generator circuitbreaker is available as HVR-63XS with rated continuous currents up to 6300 A or as HVR-63S with rated continuous currents up to 8000 A. Both variants offer flexible busbar connection. With this new HVR-63 GCB, continues to lead the way in designing the most advanced GCBs.
Hydraulic spring operating mechanism
Advanced operating system delivers stability and dependability The hydraulic spring operating mechanism combines the advantages of a hydraulic operating mechanism with those of spring energy storage system. Energy storage is accomplished with the aid of a disk spring assembly, with the advantages of stability, reliability and resistance to temperature variability. Tripping of the operating mechanism and energy output arebased on proven design elements of the hydraulic operating technique, such as control valves and hydraulic cylinders. The operating mechanism is based on the differential piston principle. For the closing operation the piston head side is isolated from the low pressure and simultaneously connected to the high pressure oil volume. As long as the pressure is maintained, the piston remains in the “closed” position. A pressure controlled mechanical interlock prevents movement of the piston to the “open” position in case of a pressure drop. For the opening operation, the piston head side is isolated from the high pressure and simultaneously connected to the low pressure oil volume. The charging state of the spring disk assembly is controlled by switching elements, actuating the pump motor to immediately maintain the oil pressure. A non-return valve between pump and high-pressure oil volume prevents pressure loss in the event of a pump outage. The hydraulic system is hermetically sealed against atmosphere. The mechanically operated position indicator provides reliable indication of the circuit-breaker position. The drive operates all three circuit-breaker poles simultaneously by mechanical linkages, thus keeping the switching time difference between the poles to a minimum.
Technology parameters
-
HECS Series Generator circuit-breakers
-
HECS-R Series Generator circuit-breakers
-
HVS Series Generator circuit-breakers
-
HECPS Series Generator circuit-breakers
-
HEC Series Generator circuit-breakers
-
Indoor vacuum circuit breaker Generator circuit breaker up to 63kA and 15 kV
-
40.5kV wind power special load switch
-
Why Regular Transformer Maintenance Matters: 5 Serious Consequences of Neglecting ItI. Allowable TemperatureWhen a transformer is in operation, its windings and iron core generate copper loss and iron loss. These losses are converted into heat energy, causing the temperature of the transformer's iron core and windings to rise. If the temperature exceeds the allowable value for a long time, the insulation will gradually lose its mechanical elasticity and age.The temperature of each part of the transformer during operation is different: the winding temperature is the highest, folRockwell09/12/2025 -
How to Implement Condition-Based Maintenance for Power Transformers? A Complete 4-Step Process Analysis1. Definition of Condition-Based MaintenanceCondition-based maintenance refers to a maintenance method where decisions on whether and how to perform maintenance are determined based on the real-time operating status and health condition of equipment. It has no fixed maintenance methods or schedules. The prerequisite for condition-based maintenance is the establishment of equipment parameters and the comprehensive analysis of various operational information of the equipment, so as to make reasonaNoah09/12/2025 -
Can't choose a dry-type transformer? Get expert advice – free.Traction Rectifier TransformersRated capacity: 800 to 4400 kVA; Voltage class: 10 kV and 35 kV; Rectifier pulse number: 12-pulse and 24-pulse. Compared with 12-pulse rectifier circuits, 24-pulse rectifier circuits can reduce the harmonic pollution of the power grid by 50%, and no filtering equipment is needed at this location. It is suitable for power supply systems of urban subways and rail transit.Excitation Rectifier TransformersRated capacity: 315 to 3000 × 3 kVA; Voltage class: 10 kV, 13.8Vziman09/12/2025 -
SG10 Series Transformer Overload Protection Solution | Prevent Overheating and Damage, View NowOperating Conditions in National Standard GB 6450-1986Ambient temperature: Maximum ambient temperature: +40°C Daily average maximum temperature: +30°C Annual average maximum temperature: +20°C Minimum temperature: -30°C (outdoor); -5°C (indoor) Horizontal axis: Product load; Vertical axis: Average coil temperature rise in Kelvin (note: not in Celsius).For Class H insulation products, the long-term temperature resistance of insulation materials is stipulated by the state as 180°C. However, the inRockwell09/12/2025 -
High harmonics? Your transformer may be overheating and aging fast.This report is based on the analysis of one-day power quality monitoring data of your company's distribution system. The data shows that there is significant three-phase current harmonic distortion in the system (with a high total harmonic distortion of current, THDi). In accordance with international standards (IEC/IEEE), harmonic currents at this level have posed substantial risks to the safe, reliable, and economical operation of the power supply transformer, mainly manifested in additional hLeon09/12/2025 -
Ultimate Guide to AC Contactor Abnormal Noise: From Electromagnetic Noise to Mechanical Vibration, Accurate Diagnosis and HandlingIn electrical control systems, AC contactors are among the commonly used electrical components, and they are also a common source of various electrical faults. After long-term use—especially in harsh environments with high levels of dust—AC contactors may sometimes emit squeaking or rattling noises after being pulled in and held. The causes of this phenomenon are analyzed as follows.Squeaking Noise After Pull-In and HoldingA fully functional AC contactor makes no noise when energized and pulledFelix Spark09/11/2025
-
Intelligent Operation Solution for 12kV Vacuum Circuit Breakers: Integrating Real-time Monitoring & Lifetime OptimizationⅠ. Equipment Operation & MaintenanceIntelligent Monitoring System IntegrationMulti-parameter Real-time Monitoring: Embedded sensors (temperature, displacement, Hall effect current sensors) track contact temperature rise, mechanical characteristics (opening/closing speed, overtravel), coil current, and partial discharge signals. Data undergoes preprocessing via edge computing prior to cloud upload.Lifetime Prediction Model: Dynamically evaluates remaining lifespan using electrical wear dataRockwill06/10/2025 -
SF6 Circuit Breaker Solutions for Outdoor Installation (Anti-Pollution & Seismic Resistance)I.Core Challenges in Outdoor InstallationIn high-voltage transmission and distribution systems, SF6 circuit breakers are exposed to complex outdoor environments for extended periods, facing the following critical issues:Pollution & Insulation DegradationDust, salt fog, and industrial pollutants in outdoor environments easily adhere to equipment surfaces. In coastal or industrial areas, pollution levels may reach Class IV, resulting in insufficient creepage distance and triggering flashoRockwill05/12/2025 -
12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact Design12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact DesignⅠ. Executive SummarySoutheast Asia faces rapidly growing electricity demand alongside environmental challenges including high temperatures, humidity, salt spray corrosion, and grid instability. This solution recommends Solid Insulated Pole-Mounted Vacuum Circuit Breakers (VCB) featuring high reliability, compact design, and smart monitoring. Tailored for tropical climates and industrial scenarios, itRockwill06/10/2025
