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YSF9-25K/50K Series Pressure Relief Device
The YSF series pressure relief device with a diameter of less than 50mm is a new type of pressure relief device, used to protect oil tanks of oil-immersed electrical equipment such as transformers, high-voltage switches, power capacitors, reactors, and on-load tap changers.
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 LevelIP55 (customizable) · Altitude 0–4000 m
Power Frequency Withstand VoltageNormally open contact 2000V/min · Normally closed contact 1000V/min · Ground 2000V/min
Insulation PerformanceNormally open contact 2500V, 1000 MΩ · Normally closed contact 1000V, 500 MΩ · Ground 2500V, 1000 MΩ
Applications
TransformersHigh-Voltage SwitchesPower CapacitorsReactorsOn-Load Tap Changers