N/A Requires minimum external down thrust of 3800 lbsSynthetic oil required.Equipped with Winding ThermostatClass F Insulation, Class B Rise at Full Load (Sine Wave Power)1.15 Service Factor (Sine Wave Power)Maximum 40ºC Ambient, 3300 Feet Altitude230/460 Volt Motors Suitable for 230 Volt Part Winding Start30 HP & Below Can Be Rerated For 208/415 Volt50 Hertz Operation at 1.0 Service FactorSuitable For Operation on VFD Per NEMA MG-1 Part 30 At 1.0 Service Factor115 Volt Space Heater Through 250 HPCorrosion Resistant Mill & Chemical Duty PaintWeather Protected HolloshaftStainless Steel NameplateNRR = Non-Reverse Ratchet, SRC = Self-Release CouplingDiscount Symbol 7VS