Outdoor Pole Mounted Recloser (Reclosure) China Manufacturer-38kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Outdoor Pole Mounted Recloser (Reclosure) China Manufacturer-38kV
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 Chinese manufacturer of reclosers, 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

Note：For three-phase applications, our Three-phase Recloser/Reclosure Customized configurations cover all standard and non-standard voltage classes. We also provide High Voltage Recloser/Reclosure Customized solutions for extra-high-voltage transmission networks, and Medium Voltage Recloser/Reclosure Customized OEM/ODM packages for urban distribution automation.

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

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Reference Projects for outdoor vacuum Auto Circuit recloser

DTEK Grid Upgrade: Operation of Rockwill 10kV Smart Recloser in -40°C Extreme Cold Environment Ukraine Case Study

As a benchmark for Chinese‑manufactured medium‑voltage distribution equipment going global, Rockwill established in‑depth cooperation with DTEK Kyiv Power Grid, Ukraine. Tailored outdoor vacuum recloser solutions were mass‑deployed to address existing weaknesses in local 10 kV distribution networks, comprehensively improving regional power supply reliability and automation to build a flagship distribution grid modernization project in Kyiv.01 Project Background: Core Pain Points of DTEK Kyiv Dis

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Successful Case of 170 Sets of 11kV Automatic Recloser Project in Kenya

Against the backdrop of quality upgrading for Kenya’s urban and rural power grids, 11kV auto-reclosers deliver reliable performance to suit local climates and grid conditions. It enables rapid fault isolation and efficient operation and maintenance, forming a core safeguard for the upgrading of Kenya’s urban and rural distribution networks.01 Project Overview1.1 Project BackgroundIn May 2023, 170 sets of 11kV Automatic Reclosers (Model: RCW12M) were officially supplied and applied to the medium-

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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

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Documentation Resource Library outdoor vacuum Auto Circuit recloser

Restricted.

38kV automatic recloser technology specification

Technical Data

English

PDF

Restricted.

10 to 38kV auto vacuum break recloser Catalog

Catalogue

English

PDF

Restricted.

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

Brochure

English

PDF

Public.

DEKRA Recloser Test Report

Test Report

English

PDF

Public.

RCW-F38N/630-20 MV Outdoor Vacuum Recloser

Drawings

English

PDF

Certifications outdoor vacuum Auto Circuit recloser

FAQ for outdoor vacuum Auto Circuit recloser

Does Rockwill offer OEM/ODM services for the Outdoor Pole Mounted Recloser to regional partners?

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.

What differentiates Rockwill's Outdoor Pole Mounted Recloser from a standard ZW32-type vacuum circuit breaker?

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.

What anti-corrosion and environmental adaptability advantages does the RCW recloser have over conventional reclosers?

Most ordinary reclosers only adopt basic anti-corrosion treatment and cannot adapt to harsh coastal and tropical environments. Differently, the RCW series vacuum recloser is specially optimized for tropical high-temperature and high-humidity working conditions.

It features upgraded salt fog corrosion resistance, perfectly adapting to coastal and offshore power distribution scenarios. The enhanced environmental resistance design makes it more reliable for overseas tropical and coastal grid projects.

How to select current sensor or current transformer specifications for Rockwill Smart Recloser?

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.

Does Rockwill offer an MV Smart Auto Recloser capable of measuring primary currents as low as 0.1A?

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.

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

DEKRA Recloser Test Report

PDF

RCW-F38N/630-20 MV Outdoor Vacuum Recloser

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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.