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YSF20 Series Pressure Relief Device
YSF20-50T, 80T, 125T is mainly suitable for pressure relief inside the oil tank of large oil-immersed power transformers, power capacitors, reactors, and other equipment when the pressure exceeds the limit. In addition to the conventional electrical alarm signal, a computer electrical alarm signal function can also be added to achieve dual electrical signal output, with each independently led out.
Installation PositionOil tank cap / raised seat / upper side wall of the oil tank
Environmental Range-30°C to +70°C (customizable to -45°C to +70°C)
Working Environment-30°C to +115°C (customizable to -45°C to +115°C)
Relative Humidity≤95% at +20°C
Protection LevelIP56 (customizable) · Altitude 0–4000 m
Power Frequency Withstand VoltageNormally open contact 2000V/min · Normally closed / SPDT contact: phase-to-phase 1000V/min, ground 2000V/min
Insulation PerformanceNormally open contact 2500V, 1000 MΩ · Normally closed / SPDT: phase-to-phase 1000V, 500 MΩ, ground 2500V, 1000 MΩ
Applications
Large Oil-Immersed Power TransformersPower CapacitorsReactors