Overhead Line Fault Passage Indicator for 6-35kV Power Lines

EKL1 Overhead Line Remote Fault Indicator Features

The EKL1 overhead line fault indicator series integrates several advanced technologies of fault current indicator, resulting in the following key features and operational advantages:

Fault Status Indication: The indicator flag displays white during normal operation and flips to red upon the detection of short-circuit or earth faults.

Maintenance-Free Operation: Designed for direct installation onto overhead conductors, ensuring continuous, maintenance-free online monitoring.

Superior Noise Immunity: Ensures reliable and smart fault detection by being immune to interference from line current fluctuations, magnetizing inrush current, high-order harmonics, and particularly, cable distributed capacitance current.

Automatic Reset Function: After activation, the overhead fault indicator automatically resets based on a preset time delay, eliminating the need for manual intervention.

Live-Line Installation: The unique clamp design allows for safe, simple, and non-intrusive installation and removal of the unit while the line remains energized.

EKL1 Overhead Line Passage Fault Indicator Installation

The smart grid solutions fault indicators are strategically deployed at key network locations to optimize fault isolation and accelerate recovery time:

Long Feeder Sections & Branch Lines: Installed at the mid-points and branch entry points of long feeders to instantly identify the faulty section and isolate the troubled branch.

Substation Feeder Exit: Deployed at the substation exit to clearly determine whether the fault originated within the station or on the external feeder line.

Customer Side High Voltage Inlet: Positioned at the high voltage inlet of a customer’s distribution transformer to determine if the fault was caused by the customer’s internal equipment.

Cable/Overhead Transition Points: Used at transition points between overhead lines and underground cables to accurately localize the fault to either the cable segment or the aerial line.