RDK three-phase electronic sectionalizer: 12-40.5kV, 200-315A, lightning impulse 75-220kV, 1-4s short-time 10kA, making peak 16-25kA. For overhead-line fault isolation with upstream reclosers.
RDK pole‑mounted three‑phase electronic sectionalizer adopts CT energy‑harvesting without external auxiliary supply, distinguishes temporary / permanent faults by counting upstream trips, with visible open gap, manual closing by insulated stick and maintenance‑free. It meets relevant IEC/ANSI sectionalizer standards with configurable pickup‑current & counting‑times.
Three-phase electronic pole mounted sectionaliser for 12kV 40.5kV systems, enabling fast fault isolation and enhanced overhead grid reliability.
Pole-mounted vacuum automatic sectionalizer for 12kV and 24kV lines, enabling smart fault isolation to improve grid reliability.
Rockwill voltage-time type intelligent sectionalizer complete set for 12kV distribution automation. Fault isolation, power restoration, remote monitoring via GPRS/fiber.
No external auxiliary power source is required. It takes energy from built‑in current‑transformer, completes fault‑current detection and counting logic by internal micro‑controller.
After permanent‑fault removal, operators can manually close it by insulated operating rod. No spare‑parts replacement is required. It will auto‑reset if fault is temporary without reaching count threshold.
Three conditions must be met simultaneously: fault current exceeds pickup setting; preset counting‑times (1‑4 times) are reached; line loses voltage and residual current below 300 mA.
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