| Brand | ROCKWILL |
| Series | RCW |
| Rated voltage | 27kV |
| Rated normal current | 1250A |
| Rated peak value withstand current | 31.5kA |
| Rated lightning impulse voltage | 150kV |
Description：
Pioneer in China’s recloser industry and the first source manufacturer dedicated to this field — this is our identity forged by decades of deep cultivation. Over the past decades, we have consolidated our development foundation through technological breakthroughs, led the industry direction by formulating standards, and successfully built a fully independent system covering core technology R&D, large-scale mass production and delivery.
The RCW series automatic circuit reclosers are designed for use in overhead distribution lines and distribution substations. They are compatible with power systems operating at 50/60Hz, covering voltage classes from 11kV to 38kV. With a rated current capacity of up to 1250A, these reclosers integrate multiple functions, including control, protection, measurement, communication, fault detection, and real - time monitoring of closing and opening operations. Composed of an integration terminal, current transformer, permanent magnetic actuator, and a dedicated recloser controller, the RCW series vacuum reclosers offer a comprehensive solution for power distribution network management.
Features:
Flexible Current Ratings: Optional ratings within the rated current range to suit diverse application needs.
Customizable Protection: A variety of optional relay protection and logic schemes for users to choose from, ensuring adaptability to different system requirements.
Versatile Communication: Optional communication protocols and I/O ports available, enabling seamless integration with various monitoring and control systems.
User - Friendly Software: Equipped with PC software that supports controller testing, setup, programming, and updates, simplifying operation and maintenance.
Parameters:
The voltage classes of some of these Automatic Reclosers include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV and 69kV. Rated Short-Circuit Breaking Current includes 8kA, 12.5kA, 16kA, 20kA, 25kA, 31.5kA and customization is available.
Item |
Specification |
Rated maximum voltage |
27kV |
Rated maximum current |
1250A |
Rated frequency |
50Hz |
Rated short circuit breaking current |
12.5kA |
Rated peak value withstand current |
31.5kA |
Rated 1min power frequency withstand voltage (Three-phase Silicone rubber pole (unable the gas)) |
70kV |
Rated lightning impulse voltage (Three-phase Silicone rubber pole (unable the gas)) |
150kV |
Operation sequence |
C-0.5-CO-2-CO-5-CO (Magnetic actuator) |
Mechanical life |
n:30000 (Magnetic actuator) |
Power supply and operating voltage |
110/220V (Customized) |
Ratio of current transformer |
400/1A (Customized) |
Number of voltage sensors (Three-phase Silicone rubber pole (unable the gas)) |
≤3 |
Opening time |
≤30ms (Magnetic actuator) |
Closing time |
≤40ms (Magnetic actuator) |
Minimum creepage distance |
31, level4 (mm/kV) |
Minimum distance between phases |
380mm |
Potential transformer |
110/220V (Customized) |
Cable length |
6,8,12m (Customized) |
Cable clamp (Three-phase Silicone rubber pole (unable the gas)) |
2-hole NEMA |
Lightning arrester |
≤6 |
Mounting type |
Single / double column |
With optional relay protection & logics for user choice |
Instantaneous over-current protection Timing over-current protection Negative sequence over-current protection Directional over-current protection(⁽¹⁾) Over-voltage protection / Under voltage protection Programmable protection relay curves (total 10 nos ANSI/IEC curves) Cold load pickup protection TCC + Hot line tag Earth protection E/F SEF + Zone- Sequence Co-ordination More relay functions can be customized |
With optional communication protocols & I/O port for user choice |
RS-232 and RS-485 ports supporting DNP3.0 communication protocol support Modbus communication protocol is optional IEC 60870-501 communication protocol support IEC 60870-5-104 communication protocol support The recloser can communicate through GPRS(or) GSM(or) GPRS/GSM module with English or Specified language |
With optional functions for use |
Rated currents, System phase current, Rated voltages, System phase voltage and secondary low voltage power supply voltage Frequency power (kWh), reactive power (kVarh), power factor |
With optional reclosing interval for user pre-program |
reclosing times setting support Dead time setting support |
With events recording function |
SOE 10000 operations record Fault record and normal operation record Note：mean should customized by manufacturer if needed |
External dimensions:
Environmental requirement:
Maximum temperature: |
+40°C |
Minimum temperature: |
-30°C |
Monthly average humidity |
95% |
Humidity: |
90% |
Above sea level: |
2500m or higher |
Ambient air Not apparently polluted by corrosive and flammable gas, vapor |
What are the key points for the selection of outdoor vacuum reclosers？
System Parameter Matching: Choose a recloser that matches the rated voltage, rated current, and short-circuit current levels of the power system. Ensure that the rated voltage of the recloser is equal to or higher than the system voltage, the rated current meets the requirements of the line load current, and the rated short-circuit breaking and making currents are greater than the maximum possible short-circuit current in the system.
Reclosing Performance Requirements: Consider the specific requirements of the power system for the reclosing function, such as the number of reclosures, reclosing time intervals, and reclosing success rate. Based on different application scenarios and power supply reliability requirements, select a recloser with appropriate reclosing performance. For example, for critical power supply lines, a recloser with a higher number of reclosures and flexible reclosing time intervals may be required.
Type of Operating Mechanism: Choose an appropriate operating mechanism based on actual needs. Spring-operated mechanisms are suitable for outdoor environments where high reliability is required and maintenance conditions are relatively poor. Permanent magnet-operated mechanisms are better suited for applications requiring high action speed and frequent operations.
Environmental Adaptability: Given the harsh conditions of outdoor environments, consider the environmental adaptability of the recloser. This includes weather resistance, pollution resistance, and water and dustproof performance. Selecting a recloser with good environmental adaptability ensures stable performance during long-term outdoor operation.
Brand and Quality: Choose well-known brands and high-quality recloser products. These products have strict quality control systems in design, manufacturing, and testing, ensuring the performance and reliability of the product. Additionally, good after-sales service is an important factor to consider when choosing a brand, as it ensures timely resolution of issues that may arise during equipment operation.
Yes. The RCWP, a cost-optimized option in the RCW+ series, features dual sensors, flagship controller, and 30,000 operations with permanent magnet three-phase linkage, while offering downgrade options (lock box removal, lockout removal, sensor/controller downgrade) so customers pay only for what they need.
Yes. Rockwill vacuum recloser stands behind the RCW series with one of the most comprehensive warranties in the recloser industry: a full 10-year warranty covering the complete recloser, including the vacuum interrupter, permanent magnet operating mechanism, and control electronics.
Any failure resulting from material or manufacturing defects during the warranty period is eligible for free replacement. Our warranty terms are straightforward and transparent, with no hidden conditions or complex exclusions, giving you complete peace of mind.
The ZW32-type VCB is a basic circuit breaker or demarcation switch without built-in auto-reclosing logic, whereas the RCW vacuum recloser is specifically engineered as a full-function recloser with integrated protection, sensors, and communication for smart grid applications.
Unlike the ZW32, which requires an external controller for automation, the RCW series complies with IEC 62271-111 and ANSI C37.60, and is supported by complete type test reports.With silicone rubber or epoxy insulation offering superior aging resistance and low water absorption, the RCW series is the professional choice for international distribution automation projects.
Yes. The solid-dielectric design is maintenance-friendly and suited to outdoor pole mounting. It supports single or double column mounting, making it suitable for pole mounted recloser projects.
The compact structure and lightweight design also help reduce installation time and on-site labor costs. If you are upgrading an existing overhead line, the RCW series can usually be integrated without major structural changes.
Our team provides technical support for controller setup, protection configuration, communication debugging, and after-sales service. Please contact us with your project details, and we will recommend a suitable recloser solution.
Support includes PC software operation, parameter setting, communication testing, and troubleshooting guidance. This helps customers complete commissioning faster and reduce downtime.
The Rockwill standard smart recloser offers high precision with a wide measuring range (2A–16,000A). Simply ensure your normal current is within this standard range when making a selection.
Yes. In addition to the standard 2A–16,000A range, Rockwill provides custom-configured units for ultra-low current measurement and protection in the 0.1A–2A range.
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