Application Scenarios / Pain Points
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Power systems with long cables are susceptible to interference due to distributed capacitance, causing spurious signals or unintended tripping.
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In international power systems, the same field problem exists.
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Therefore, overseas practice usually divides trip output relays into Low Burden Relays (functionally similar to our general‑purpose relay) and High Burden Relays (functionally similar to the domestic anti‑interference relay). The High Burden type is used to prevent false operation or spurious signaling in long‑cable power systems.
Our Solution
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We pioneered an anti‑interference intermediate relay designed to prevent false operations or spurious signals in long‑cable power systems.
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The relay meets:
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Pick‑up voltage: 55–75%Un (China Southern Power Grid typically requires 55–70%Un).
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Pick‑up power: not less than 5 W.
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Special requirement: must not operate at 220 VAC input.
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Operate time: 15–35 ms.
Recommended Product Series
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UEG/F Anti‑Interference Intermediate Relay Series
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GRUS-11H Fast Trip Relay Series (High Burden)
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GRUS-11TA Lockout Relay Series (High Burden)