35kV Three-Phase Automatic Recloser for Power Distribution

🛡️ Reliable Fault Isolation for Medium Voltage Overhead Systems

The 35kV three-phase auto circuit recloser is a smart protection device designed to automatically detect and interrupt short circuits or overloads in overhead medium-voltage lines. After an initial trip, it restores power if the fault is temporary, helping utilities reduce outage time and maintain service continuity.

This model is widely used in overhead power distribution, especially in rural networks, wind and solar farms, and industrial feeders, where fast, automatic restoration significantly improves system reliability.

⚙️ Technical Parameters

Specification	Value
Rated Voltage	35kV
Rated Current	630A / 1250A
Rated Frequency	50/60Hz
Rated Short-Circuit Breaking	16kA / 20kA
Phases	3-phase
Control Method	Electronic controller with remote communication
Reclosing Sequence	Configurable (e.g., 1-3 attempts)
Operating Mechanism	Motor-spring charged
Insulation Medium	Vacuum interrupter + SF6 or solid dielectric
Control Interface	RS485 / GPRS / IEC 60870-5-101/104

🔌 Key Features & Benefits

• Auto Reclose Functionality: Quickly restores power after temporary faults like lightning strikes or animal contacts.

• Remote Monitoring & Control: Compatible with SCADA and smart grid systems for real-time diagnostics and switching.

• Weatherproof Design: Fully sealed enclosure meets IP65/IP67 rating, ideal for harsh outdoor conditions.

• High Insulation Integrity: Combines vacuum arc extinguishing with SF6 or solid dielectric housing for long-term durability.

• Configurable Tripping Logic: Adjustable settings based on protection scheme, load criticality, and line type.

🏞️ Application Scenarios

• Overhead Distribution Lines in Suburbs or Mountains
  Auto-restores power after tree branch contact or flashovers.

• Wind and Solar Power Collector Circuits
  Ensures renewable energy remains connected during transient grid disturbances.

• Industrial 35kV Feeders
  Protects critical loads while minimizing downtime with intelligent reclose cycles.

• Utility Power Grids in Developing Areas
  Reduces manual maintenance and dispatch time, especially in vast geographic zones.

🌍 Global Customer Testimonials

🔹 Brian L. – Grid Reliability Manager, Ontario Hydro (Canada)
"After upgrading to the 35kV recloser on our rural lines, we saw a 60% drop in customer outage complaints during storms."

🔹 Felipe G. – Engineer, CPFL Energia (Brazil)
"This recloser is simple to integrate into SCADA and responds faster than our legacy units."

🔹 Jeremy K. – Network Supervisor, Duke Energy (USA)
"Durability in both rainy and high-humidity zones is impressive — still operating cleanly after 3 years."

🔹 Saeed A. – Electrical Inspector, DEWA (UAE)
"Great surge-withstand and reclosing stability in our 50°C environments."

🔹 Peter S. – Operations Engineer, Scottish Power (UK)
"Used this on a solar branch line. Excellent reclosing coordination with our relay settings."

📌 Compliance & Standards

• IEC 62271-111 (High-voltage switchgear and controlgear – Part 111: Auto-reclosers)

• GB/T 22387

• IEEE C37.60

• Type-tested and certified for temperature endurance, dielectric withstand, and mechanical reliability.

❓FAQ – 35kV 3-Phase Auto Recloser

• What is the typical reclosing sequence?
Most systems follow a standard 3-shot sequence: trip → 1st reclose → 2nd reclose → lockout if the fault persists. This helps isolate temporary faults without manual intervention.

• Can it be remotely controlled?
Yes. The unit supports remote switching, fault indication, and parameter tuning via GPRS, RS485, or fiber communication, enabling full SCADA integration.

• Does this model support load shedding coordination?
Absolutely. It can be programmed for load shedding based on time-current characteristics, external logic, or priority-based tripping via communication protocols.

• What type of insulation does it use?
The arc extinction is performed by vacuum interrupters, with housing options available in SF6-gas or solid-state insulation, depending on installation conditions.

• Is lightning protection included?
It is recommended to install surge arresters on both sides. Some recloser models include built-in surge protection ports or interfaces for external arrester integration.

• Where can this recloser be installed?
It is designed for pole-mounted installations, compatible with both concrete utility poles and H-beam steel structures, suitable for outdoor grid conditions.

• Can it be mounted horizontally or vertically?
Yes. The recloser supports both vertical and horizontal installation, allowing flexibility for various pole layouts and urban-rural grid topologies.

• What communication protocols are supported?
This model supports industry-standard protocols including DNP3, IEC 61850, IEC 60870-5-104, IEC 60870-5-101, and Modbus, ensuring easy compatibility with modern energy management systems.

• Is it compatible with ABB SYS600 or other SCADA platforms?
Yes. The recloser controller is fully compatible with ABB SYS600, as well as other SCADA platforms like Siemens SICAM, Schneider EcoStruxure, etc.

• Is this recloser suitable for 33kV systems?
Yes. This 35kV-class recloser is fully compatible with 33kV overhead distribution networks, offering excellent performance for medium-voltage grid protection and automation.

📩 Request a Datasheet or System Integration Guide

Thor – Electrical Engineer, Wei Shoe Elec
📧 Email: thor@weishoelec.com
📱 WhatsApp: +86 159 5777 0984
📞 Tel: +86-0577-62788197