Pole Mounted outdoor vacuum recloser/Reclosure-38kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Pole Mounted outdoor vacuum recloser/Reclosure-38kV
Rated voltage	38kV
Rated normal current	400A
Rated short circuit breaking current	12.5kA
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 expertise to set industry benchmarks, operate a fully autonomous production system, and deliver reliable solutions for power grid projects.

The RCW series automatic circuit recloser is specifically designed for 38kV overhead distribution lines and substation applications in 50/60Hz power systems. It integrates control, protection, measurement, communication, fault detection, and online monitoring of switching status. The RCW series combines a vacuum interrupter, current transformers, a permanent magnetic actuator, and an intelligent controller into a compact, high-performance unit.

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

RCW Vacuum Reclosers Spring mechanism

Pole Mounted outdoor vacuum recloser/Reclosure Spring mechanism

Product Showcase Video

Parameters

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

External dimensions

Pole Mounted outdoor vacuum recloser/Reclosure-38kV

RCW Vacuum Reclosers Physical Photo

Pole Mounted outdoor vacuum recloser/Reclosure Physical Photo

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 mechanical failures of outdoor vacuum reclosers?

Operating Mechanism Faults：

Spring-Operated Mechanism：

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.

Permanent Magnet-Operated Mechanism：

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.

Transmission Component Faults：

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.

Solutions for outdoor vacuum Auto Circuit recloser

Revolutionizing Outdoor High-Voltage Grid Protection over Conventional Breakers-- Reclosers

Ⅰ. Core Functional Positioning Differences1. Recloser: Intelligent Self-Healing Switch Essence: Integrates arc-extinguishing system, operating mechanism, and intelligent control unit. Capable of autonomous fault detection → tripping → time-delayed reclosing → locking. Core Advantages: Programmable Operation Sequences: Supports customizable sequences (e.g., "one fast + three delayed" or "two fast + two delayed") to distinguish transient/permanent faults. Example: First fast trip clears transien

Rockwill

Reference Projects for outdoor vacuum Auto Circuit recloser

Rockwill Ukraine 186 Units 12kV Outdoor Vacuum Recloser Project Success Case

In response to the operational characteristics of Ukraine’s local power grid and targeting harsh high-latitude outdoor working conditions, we rely on core technologies of intelligent reclosing and self-healing to precisely adapt to the complex grid environment with frequent thunderstorms and drastic diurnal temperature variations, steadily promoting the automatic and intelligent upgrade of regional rural power grids and suburban distribution networks.01 Project Overview1.1 Project BackgroundIn 2

Rockwill

Documentation Resource Library outdoor vacuum Auto Circuit recloser

Public.

RCW-F38N/630-20 MV Outdoor Vacuum Recloser

Drawings

English

PDF

Public.

DEKRA Recloser Test Report

Test Report

English

PDF

Restricted.

15kV/27kV/38kV outdoor auto break vacuum recloser

Brochure

English

PDF

Restricted.

10 to 38kV auto vacuum break recloser Catalog

Catalogue

English

PDF

Restricted.

38kV automatic recloser technology specification

Technical Data

English

PDF

Certifications outdoor vacuum Auto Circuit recloser

FAQ for outdoor vacuum Auto Circuit recloser

What are the key differences between Rockwill's RCW series recloser and a ZW32-type vacuum circuit breaker?

The ZW32-type VCB is a basic circuit breaker or demarcation switch without built-in auto-reclosing logic, whereas the RCW series 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.

Does Rockwill offer a cost-effective alternative that is more budget-friendly than the standard RCW+ series?

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.

Related Q&A for outdoor vacuum Auto Circuit recloser

Q: Rockwill Recloser commissioning questions collection

Service Manager +Follow +Follow

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2 8

$5000.00

Pricing calculator

Model

RCW-F38N/630-20 MV Outdoor Vacuum Recloser

PDF

DEKRA Recloser Test Report

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.