Medium voltage Pole Mounted Drop Out Automatic Sectionalizer 15kV 27kV 38 kV

The ROCKWILL AutoLink Sectionalizer serves as a dedicated isolating component designed to automatically disconnect faulty segments of overhead power networks in the event of a permanent fault. In cases of temporary faults, the AutoLink sectionalizer enables upstream reclosers or breakers to resolve the issue without disrupting the entire circuit. Available in both electronic and wireless configurations, the AutoLink family is engineered to enhance power supply reliability and ensure uninterrupted service continuity for overhead distribution systems.

Product Overview

Designed for three-phase AC power systems operating at 50Hz with a rated voltage range of 10-40.5kV, the AutoLink sectionalizer is installed on overhead distribution lines to isolate faults when paired with reclosers or circuit breakers. When a fault occurs on the line and the fault current meets or exceeds the preset threshold, the sectionalizer records the number of tripping operations performed by the upstream recloser. Once this count reaches the preconfigured limit, the sectionalizer automatically trips to disconnect the faulty segment.

The AutoLink sectionalizer will initiate an automatic trip only when all three of the following conditions are met simultaneously:

• The fault current exceeds the preset pickup current value;
• The recorded number of upstream recloser trips reaches the user-configured count (1, 2, 3, or 4);
• The circuit experiences a voltage loss and the current drops below 300mA.

If any of these conditions are not satisfied, the sectionalizer will not trigger an automatic trip. Equipped with a microcomputer and an integrated operating trip mechanism, this device operates without the need for external auxiliary power, ensuring reliable performance even in remote or inaccessible installation locations.

Key Benefits

• Boosts power supply reliability and service continuity by effectively distinguishing between temporary and permanent network faults
• Minimizes inventory requirements with a universal design that accommodates all current ratings, eliminating the need for multiple sizes
• Facilitates hassle-free, rapid installation that does not require specialized tools or complex on-site setup
• Cuts down maintenance time significantly, thanks to its field-configurable settings and easy reset functionality
• Lowers overall operational expenses by reducing downtime, maintenance labor, and inventory costs

Key Features

• Available in three standard voltage ratings: 15 kV, 27 kV, and 38 kV, covering a wide range of overhead network requirements
• Allows users to adjust both nominal current and fault count settings according to specific project or network needs
• Operates independently without the need for an external power source, enhancing installation flexibility and reliability
• Comprehensive product family: includes single-phase, loadbreak, mechanical three-phase, and wireless three-phase models to suit diverse application scenarios
• Functions independently of time-current curves, ensuring consistent performance regardless of upstream protection settings

Technical data

12/24kV IEC/ANSI

36/38kV IEC/ANSI

Installation