| Brand | ROCKWILL |
| Model NO. | 25.8kV 30kV 36kV 38kV outdoor Auto Circuit vacuum distribution recloser/reclosure Direct Supply |
| Rated voltage | 38kV |
| Rated normal current | 1250A |
| Rated short circuit breaking current | 25kA |
| Power frequency withstand voltage | 90kV/min |
| Rated lightning impulse voltage | 195kV |
| manual closing | Yes |
| Mechanical lock | No |
| Series | RCW |
Description：
Pioneer of China’s recloser track and the first specialized source manufacturer — that’s who we are after decades of focused efforts. We’ve strengthened our foundation via tech breakthroughs, guided the industry through standard-setting, and built a fully independent full-chain system from core R&D to mass production and delivery.
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：
Full-Vacuum Arc Extinguishing System：Utilizes longitudinal magnetic field vacuum interrupters and epoxy-cast poles, with a short-circuit breaking capacity of 16kA/25 cycles and a mechanical lifespan exceeding 10,000 operations, suitable for frequent switching scenarios.
Integrated Intelligent Control Platform：Equipped with FTU and edge computing modules, supports GOOSE communication, fault waveform recording, and seamless SCADA system integration, enabling remote iterative updates of protection logic via cloud platforms.
Industrial-Grade Environmental Endurance Design：Features an IP67-rated enclosure, operates across a wide temperature range (-45℃ to +70℃), and is validated for both salt spray corrosion (Kesternich 1440h) and seismic resistance (intensity 8).
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.
Rated maximum voltage |
38kV |
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 Epoxy resin pole) |
90kV |
Rated lightning impulse voltage (Three-phase Epoxy resin pole) |
195kV |
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 Epoxy resin pole) |
≤6 |
Opening time |
≤30ms (Magnetic actuator) |
Closing time |
≤40ms (Magnetic actuator) |
Minimum creepage distance |
31, level4 (mm/kV) |
Minimum distance between phases |
360mm |
Potential transformer |
110/220V (Customized) |
Cable length |
6,8,12m (Customized) |
Cable clamp (Three-phase Epoxy resin pole) |
4-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 |
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 |
Product show：
What are the structural characteristics of outdoor vacuum recloser?
Vacuum Arc Quenching Chamber: The core component that uses a vacuum environment to extinguish arcs. It offers advantages such as strong breaking capacity, fast dielectric recovery, and long contact life, effectively ensuring the reliability of the equipment when interrupting fault currents.
Insulating Pillars: Typically made from high-strength, weather-resistant insulating materials such as epoxy resin, these pillars provide reliable insulation support for the vacuum arc quenching chamber and other components, ensuring the insulation performance of the equipment in harsh outdoor environments.
Operating Mechanism: Common types include spring-operated mechanisms and permanent magnet-operated mechanisms. Spring-operated mechanisms are simple in structure, highly reliable, and easy to maintain. Permanent magnet-operated mechanisms, on the other hand, offer advantages such as fast action, low energy consumption, and long mechanical life, enabling quick and precise opening and closing operations of the recloser.
Current Transformers and Voltage Transformers: Some reclosers are equipped with current transformers and voltage transformers to measure current and voltage signals in the line. These transformers provide data support for protective devices and control devices, enabling the monitoring and protection functions of the power system.
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.
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. We support customized protection, communication, CT ratio, cable length, and mounting type. we also provide Outdoor Recloser/Reclosure OEM/ODM China services.
Yes. The controller supports reclosing times setting and dead time setting, allowing users to pre-program the reclosing interval based on different protection schemes. This flexibility is important for Automatic Recloserprojects that require adaptive reclosure strategies.
The controller supports SOE with 10,000 operations record, fault record, and normal operation record. This helps utilities analyze fault events, verify protection operations, and improve maintenance planning. It is suitable for Circuit Recloser applications where event traceability is important.
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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