| Brand | ROCKWILL |
| Model NO. | 38kV 38.5kV 40.5kV 44kV Three-phase outdoor vacuum distribution recloser/Reclosure direct Supply |
| Rated voltage | 38kV |
| Rated normal current | 1250A |
| Rated short circuit breaking current | 25kA |
| Power frequency withstand voltage | 85kV/min |
| Rated lightning impulse voltage | 185kV |
| manual closing | No |
| Series | RCW |
Description：
As a pioneering OEM in China’s recloser sector, we leverage decades of R&D strength to set the original industry standards, build a fully autonomous full-chain production system, and provide reliable solutions for power grid projects.
The RCW series automatic circuit reclosers can use on overhead distribution lines as well as distribution substation applications for all voltage 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-linemonitoring 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.
Solving the dual challenges of tropical heat and humidity
Resistant to salt fog corrosion, suitable for offshore / coastal power applications
Fully sealed design, preventing sand and dust from affecting
Operable in wide temperature range: -30°C to +40°C, handling extreme temperature variations
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) |
85kV |
Rated lightning impulse voltage (Three-phase Epoxy resin pole) |
185kV |
Operation sequence |
C-0.3-CO-180-CO (Spring mechanism) |
Mechanical life |
n:10000 (Spring mechanism) |
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 |
≤50ms (Spring mechanism) |
Closing time |
≤60ms (Spring mechanism) |
Minimum creepage distance |
31, level 4 (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 mechanical failures of outdoor vacuum reclosers?
Spring Fatigue: Spring fatigue is a common issue. If the spring remains compressed for a long time or is frequently operated, it may lose its elasticity, causing the closing speed to slow down or the closing position to be inaccurate. Additionally, mechanical transmission components of the spring-operated mechanism, such as connecting rods and toggle arms, can wear out, deform, or become stuck, affecting the accuracy and reliability of the opening and closing operations.
Magnet Demagnetization: Demagnetization of the permanent magnet is a potential fault in permanent magnet-operated mechanisms. High-temperature environments, strong vibrations, or prolonged exposure to high currents can weaken the magnetic properties of the permanent magnet, affecting the performance of the operating mechanism. Furthermore, faults in the control circuit of the permanent magnet-operated mechanism, such as capacitor aging or electronic component failure, can also lead to abnormal opening and closing operations.
Loose or Detached Connecting Rods: In outdoor vacuum reclosers, the transmission connecting rods may loosen or even detach over time due to vibration, corrosion, or other factors. This can prevent the opening and closing actions from being transmitted properly, causing the recloser to fail to operate correctly.
Wear or Breakage of Pivot Pins: Pivot pins can wear out during rotation. Severe wear can increase the clearance between transmission components, affecting the precision of the opening and closing actions. If a pivot pin breaks, it can directly interrupt the transmission chain of the recloser, preventing it from performing opening and closing operations.
Yes, Rockwill provides a comprehensive OEM/ODM program for our RCW Outdoor Pole Mounted Recloser. We partner exclusively with regional manufacturers and distributors who possess robust engineering expertise and local service capabilities, ensuring they can deliver outstanding technical support alongside our advanced technology.
While the ZW32 is a basic switch requiring an external controller, the RCW Outdoor Pole Mounted Recloser is a fully integrated smart grid solution with built-in protection, sensors, and communication.
Furthermore, it strictly complies with IEC/ANSI standards and uses premium insulation designed specifically for international distribution automation projects.
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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