RLY－DMJ45R－01_ABB_PRODUCT_吉林易择科技技术发展有限公司

Key Specifications Specification Value / Description Model ABB RLY‑DMJ45R‑01 Product Type Gas Density Sensor / Density Relay Application Insulating gas (e.g., SF₆) density monitoring in high‑voltage equipment Output Type Relay contact outputs (switching contacts) Contact Functions Density‑high, density‑low thresholds switch contacts Standard Operating Range Normal gas pressure/density ranges typical for rated equipment (factory configured) Contact Return / Action Values Specific alarm and release values for density thresholds (factory set) Variants RLY‑DMJ45R‑01 through ‑04 for different contact compatibility and altitude adjustments Mounting / Package Relay housing suitable for control panels or relay racks Typical Use Cases SF₆ circuit breaker/gas‑insulated switchgear gas monitoring, alarm systems

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DESCRIBE

The ABB RLY‑DMJ45R‑01 is a gas density monitoring relay / sensor for use in electrical apparatus that uses insulating gas (e.g., sulfur hexafluoride, SF₆). It measures the gas density inside the equipment and actuates built‑in relay contacts when the density goes above or below defined limits. This helps protect equipment by triggering alarms or interlocks when gas pressure/density is outside safe operating ranges.

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