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BA 251 - Model BA 251, 230/400 V, 50 Hz ...

BA 251 - Model BA 251, 230/400 V, 50 Hz -3-Phase Motor without HV-Safety Valve

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Single-stage, high-performance rotary vane pump with a pumping speed of 250 m3/h. 3-phase motor for 230/400 (± 5 %) V, 50 Hz supply voltage. Process integrity thanks to integrated gas ballast valve. Without HV safety valve. For low and medium vacuum applications. Other motor voltages available on request. Please note: cable has to be ordered as accessory separately.

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Pumping speed at 50 Hz: 250 m³/h | 147.15 cfm | 4,166.67 l/min
Protection degree: IP55
Final pressure with gas ballast: 1 hPa | 0.75 Torr | 1 mbar
Final pressure without gas ballast: 5 · 10-2 hPa | 3.75 · 10-2 Torr | 5 · 10-2 mbar
Connection flange (in): DN 63 ISO-F
Connection flange (out): DN 63 ISO-K
Rated power 50 Hz: 11 kW
Motor type: 3-ph motor
Motor protection: 3TF
Mains cable: No
Cooling water pressure: 2,000-10,000 hPa | 1,500-7,500 Torr | 2,000-10,000 mbar
Cooling method: Water
Cooling water flow: 50 l/h
Ambient temperature: 12-40 °C | 53.6-104 °F | 285-313 K
Cooling water temperature: 10-30 °C | 50-86 °F | 283-303 K
Exhaust pressure, min.: Atmospheric pressure
Exhaust pressure, max.: 1,500 hPa | 1,125 Torr | 1,500 mbar
Emission sound pressure level without gas ballast at 50 Hz: 63 dB(A)
Nominal rotation speed at 50 Hz: 1,500 rpm | 1,500 min-1
Nominal rotation speed pump, 50 Hz: 490 min-1
Operating fluid: P3
Operating fluid amount: 17 l
Rotation speed at 50 Hz: 490 rpm | 490 min-1
Weight: with motor: 570 kg | 1,256.62 lb