| Brand | ROCKWILL |
| Model NO. | 21.9kV MV outdoor vacuum Auto Circuit recloser |
| Rated voltage | 21.9kV |
| Rated normal current | 800A |
| Rated short circuit breaking current | 20kA |
| Power frequency withstand voltage | 85kV/min |
| Rated lightning impulse voltage | 185kV |
| manual closing | Yes |
| Series | RCW |
Description：
The RCW series automatic circuit reclosers can use on overhead distribution lines as well as distribution substation applications for allvoltage classes 11kV up to 38kV at 50/60Hz power system. and it’s rated current can reach 1250A.The RCW series automatic circuit reclosers integrates the functions of control, protection, measurement, communication, fault detection, on-line monitoring of closing or opening.The RCW series vacuum recloser is mainly combined with integration terminal, current transformer, permanent magnetic actuator and it’s recloser controller.
Features：
Optional grades available in rated current range.
With optional relay protection and logic for user selection.
With optional communication protocols and I/O ports for users to choose.
PC software for controller testing, setup, programming, updates.
Parameters：
Environmental requirement：
Product show：
What are the scenarios in which the 38kV outdoor vacuum recloser is used？
38kV Overhead Transmission Lines: Widely used in branch lines and end lines of 38kV overhead transmission lines as control and protection devices. When a fault occurs in the line, the recloser can quickly interrupt the fault current and automatically perform reclosing operations, reducing downtime and improving power supply reliability.
38kV Substation Outgoing Lines: Installed on the outgoing side of 38kV substations to control and protect the electrical connections between the substation and the transmission lines. When a fault occurs in the substation outgoing lines, the recloser can promptly isolate the fault, ensuring the safe operation of the substation, and quickly restore power supply through the reclosing function.
38kV Distribution Network Automation System: As one of the key devices in the distribution network automation system, the recloser works in conjunction with other intelligent devices to achieve remote monitoring, control, and fault location functions for the distribution network. By communicating with feeder terminal units (FTUs) and distribution automation master stations, the recloser receives control commands and uploads operational status information, enhancing the automation level and operational management efficiency of the distribution network.
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The difference between transmission and distribution linesTransmission lines and distribution lines are both used to carry electrical power from one location to another. However, they differ significantly in key aspects such as primary function, voltage levels, phase configuration, and conductor placement. These differences are essential for understanding their distinct roles in the power system.The Difference Between Transmission and Distribution Line is given below in the tabulated form.Electricity generation is a critical component of the power systEdwiin09/04/2025 -
Ensuring Reliability: A Deep Dive into Transformer MaintenanceIntroductionElectric transformers are the backbone of modern power distribution systems, silently enabling the reliable delivery of electricity to homes, businesses, and industries. As these critical assets age and the demand for uninterrupted power grows, the importance of diligent transformer maintenance has never been greater. This essay explores the essential role of transformer maintenance, highlighting the value of proactive care, the impact of advanced diagnostic technologies, and the traVziman09/03/2025
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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 -
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