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RWK-38 Line Sectionalizing Load Break Switch Controller installation drawing

Used together with 38kV outdoor pole-mounted load break switches on overhead distribution lines for rural and suburban power grids. It is widely applied in long radial feeders, distributed power grid connection lines and rural grid upgrading projects. The

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Updated2026.09

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Line Sectionalizing Load Break Switch Controllerinstallation drawing

Document description

This is an installation drawing for the RWK-38 Line Sectionalizing Load Break Switch Controller.

ROCKWILL RWK-38 Line Sectionalizing Load Break Switch Controller is an outdoor intelligent sectionalizer control unit designed to match 38kV pole-mounted load break switches for overhead distribution feeders. It adopts loss-of-voltage and no-current sectionalizing logic, counting fault trips from upstream protection devices and executing automatic opening after power loss to isolate permanent fault segments. The controller integrates current/voltage signal acquisition, fault counting, event recording, local HMI setting and remote communication functions. The product complies with IEC 60255-1:2018, IEC 60255-26:2020 and IEC 62271-111:2019 standards. Relevant documents include Type Test Certificate No. TT-2025-04188, Witness Test Report No. WT-2025-09121, Routine Factory Test Report No. FT-2025 series, Raw Material Mill Certificates, all issued by CNAS accredited independent test laboratory and available for tender submission, utility review and project site acceptance. Constructed with stainless steel IP65 tropicalised enclosure with anti-corrosion and UV resistant coating, the controller supports dual power supply by external AC220V auxiliary power and built-in backup battery, suitable for long-term pole-mounted outdoor installation.

Frequently asked questions

What is the core operating principle of the RWK-38 Line Sectionalizing Load Break Switch Controller?

The RWK-38 Line Sectionalizing Load Break Switch Controller works based on loss-of-voltage and no-current sectionalizing logic. It counts upstream fault reclosing operations and trips automatically after line power loss to isolate permanent fault segments, and cannot directly interrupt short-circuit fault current by itself.

What international standards and certification does the RWK-38 Line Sectionalizing Load Break Switch Controller comply with?

The RWK-38 Line Sectionalizing Load Break Switch Controller is designed and tested in accordance with IEC 60255-1:2018, IEC 60255-26:2020 and IEC 62271-111:2019 standards. It is supported by complete Type Test Certificate No. TT-2025-04188, Witness Test Report No. WT-2025-09121, factory test reports and material certificates for project review and acceptance.

What power supply options are available for the RWK-38 Line Sectionalizing Load Break Switch Controller?

The RWK-38 Line Sectionalizing Load Break Switch Controller can be powered by external AC220V auxiliary power, and is equipped with built-in backup battery with anti-over-discharge protection. It can complete opening/closing actions and maintain all control functions even when external auxiliary power fails.

What communication interfaces and protocols does the RWK-38 Line Sectionalizing Load Break Switch Controller support?

The RWK-38 Line Sectionalizing Load Break Switch Controller is equipped with RS485 and Ethernet ports, supporting Modbus, DNP3 and IEC 60870-5-104 protocols. It can upload line electrical parameters, fault records and equipment status to the SCADA system for remote monitoring.

What installation requirements apply to the RWK-38 Line Sectionalizing Load Break Switch Controller?

The RWK-38 Line Sectionalizing Load Break Switch Controller is designed for pole-mounted outdoor installation. The stainless steel enclosure shall be mounted vertically, keep sufficient clearance from the matched load break switch, and ensure waterproof sealing of cable glands after field wiring.

What maintenance work should be carried out for the RWK-38 Line Sectionalizing Load Break Switch Controller?

During routine maintenance, inspect the enclosure integrity and sealing condition, check battery health status and wiring terminal tightness, export historical fault records periodically, and verify sectionalizing count settings to guarantee correct fault isolation performance.

RW Energy

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100-500 2013 China

Zhejiang Rockwell Energy Technology Co., Ltd. is an international enterprise specializing in the research, development and manufacturing of recloser controllers, power quality management, power monitoring systems and other high-end power equipment. In today's critical period of global energy transition and power system upgrading, the company has gathered a group of top talents in the fields of power engineering, automation control, software development, etc., who carry the enthusiasm and persistence for the power business, and are committed to overcoming the complex problems in the power system, and promoting the intelligent development of the power industry with innovative technology. Mission: To make global electricity smarter, more reliable and more efficient with innovative technology. Vision: To be the leader in global power intelligence.

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RW Energy

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RWK-38 Line Sectionalizing Load Break Switch Controller installation drawing

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