Three-phase vacuum Smart recloser/Reclosure for overhead power network-27kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Series	RCW
Rated voltage	27kV
Rated current	400A 630A 800A 1250A
Rated short-circuit breaking current	12.5kA 16kA 20kA 25kA
Power frequency withstand voltage	45kV/min
Rated lightning impulse voltage	125kV
Standard	IEC 62271‑1 IEC 62271-111

Description

Description：

As a pioneering original equipment manufacturer (OEM) in China’s recloser industry, we have accumulated decades of R&D expertise, taken the lead in establishing the original industry standards, built a fully independent end-to-end production system, and delivered reliable product solutions for power grid construction.

The RCW series automatic circuit reclosers can use on overhead distribution lines as well as distribution substation applications for all voltage classes at 50/60Hz power system. and it’s rated current can reach 1250A.The RCW series automatic circuit reclosers integrates the functions ofcontrol, 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：

Automatic Fault Isolation: Accurately identifies and isolates permanent faults within milliseconds, reducing outage scope by over 85%.
Automatic Service Restoration: Restores power to non-faulted sections within 2 seconds via intelligent topology reconfiguration, ensuring continuous operation of critical loads.
Fault Detection and Protection: Employs high-frequency transient recording and AI diagnostics to accurately identify 32 types of fault characteristics, enabling adaptive protection.
Sectionalizing Protection: Supports four-level grading coordination and virtual segmentation with ±10ms timing accuracy, eliminating the need for additional physical switches.
High Reliability and Durability: Core components are validated for 100,000 mechanical operations, featuring wide-temperature operation (-40°C to 75°C) and IP68 protection rating.
Environmentally Friendly: Utilizes vacuum arc-extinguishing technology with zero SF6 gas usage,

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	15kV
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))	45kV
Rated lightning impulse voltage (Three-phase Silicone rubber pole (unable the gas))	120kV
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	360mm
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

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:

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BREB 11kV Automatic Circuit Reclose Specification Submission Sheet

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11kV Automatic Circuit Reclose Standard for Class III in Bangladesh

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15 kV Pole Mount Auto Recloser Technical Specifications for Guyana Power & Light Incorporated (GPL)

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

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Certifications Auto Circuit vacuum recloser

FAQ for Auto Circuit vacuum recloser

Q: 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.

Q: Does Rockwill really provide a 10-year quality warranty and free replacement?

Yes. Rockwill 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.

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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.