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DT-AS1700 Type Pulse-Based Single-Phase Ground Fault Precise Line Selection Device
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Overview
The pulsed-current-based small-current ground-fault location device adds a controllable pulsed-current generator to the conventional small-current fault-location device. Specifically, a resistor assembly capable of being controlled and delivering pulsed currents is installed at the system’s neutral point. At the same time, the fault-location algorithm in the core controller for small currents has been adjusted. By adopting this complete fault-location system, the accuracy of fault location has been significantly improved.
The components of the complete set of equipment include: a grounding transformer (optional when the system has no neutral point), a pulse current generation device, current transformers for main circuit current measurement, an isolating switchgear assembly, a thyristor device controlled by pulse current triggers, a monitoring and protection system for switching the current generation device, a core controller, and a main control panel, among other components.
Product Features
The delayed acquisition of injection current can be configured.
Not subject to system interference and does not pose any harm to the system;
It features continuous acquisition and comparison functions for system zero-sequence current and fault current, with no fewer than five consecutive measurements.
The pulsed auxiliary selection current increment device features adjustable current settings.
It can flexibly and accurately identify fault lines within multi-level switchgear substations.
Equipped with a heavy-duty judgment function to enhance the accuracy of line selection.
Address
No. 010, Riyuetan Road, Economic Development Zone, Luancheng District, Hebei Province
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