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Sperre LL2/140 — Manufacturer: Sperre, Model: LL2/140, Serial number: 145099, kW: 30 @ 50 Hz 34,5 @ 60 Hz, RPM: 1470 @ 50 Hz - 1760 @ 60 Hz, Volt: 380 - 440 - see photo of electric motor type plate, HZ: 50 - 60, m³ /h, cubic meter per hour capacity: 188, Electric motor type: Siemens - see photo of electric motor type plate, Working pressure BAR: 8, Test Pressure BAR: 15 View larger
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Sperre LL2/140

60025-sperre-ll2-140

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Sperre LL2/140

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Data sheet

Manufacturer Sperre
Model LL2/140
Serial number 145099
m³ /h, cubic meter per hour capacity 188 at 1470 rpm (50 Hz)
Working pressure BAR 8
Test Pressure BAR 15
Electric motor type Siemens, 30 kW 50 Hz / 34.5 kW 60 Hz, DNV
kW 30 (50 Hz) / 34.5 (60 Hz) motor
RPM 1470 (50 Hz)
Volt 380 V Δ (50 Hz) / 440 V Δ (60 Hz)
Amps 58 A (380 V) / 57 A (440 V)
HZ 50 (motor rated 50 / 60 Hz)

More info

Capacity at 50 / 60 Hz: 188 m³/h at 1470 rpm (50 Hz) according to the nameplate. The Siemens motor is rated for 60 Hz (1760 rpm) as well, but max. speed of the LL2/140 is 1500 rpm – for 60 Hz use a 6-pole motor at 1175 rpm, approx. 155 m³/h (Sperre data).

Model LL2/140 is a one stage 90º V-compressor.

Cylinders and compressed air coolers are air-cooled.

Bearings and cylinders walls are splash lubricated. The compressor and motor are normally supplied mounted together and connected by means of a heavy-duty flexible coupling.

Technical Data
Performance50 Hz (7-10 bar)60 Hz (7-10 bar)
Speed (RPM) 975 1475 1175
Charging capacity (m³/h)* 128 188 155
Power requirement (kW) 16,5 25,1 19,8
Heat dissipation (kCal/h) 12771 19427 15325
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
Design
No. of cylinders 2
Cylinder arrangement 90° V
No. of compression stages 1
Cooling Air
Valve LP Concentric plate valves
Dimensions & weight
Cylinder diameter LP 140 mm
Stroke 100 mm
Weight (compressor/el.motor) 626 kg
Lubrication
Sump capacity 10 litres
Lubrication system Splash
Operating parameters
Maximum delivery pressure 10 bar
Ambient temperature 45°C
Normal temperature outlet air 10°C above ambient temperature
Maximum speed 1500 RPM
Set point thermo switch air alarm/stop 75°C/80°C
Rotation Anti-clockwise (looking at the drive end)
Safety valves set point 10% above stage pressure
Max. noise level 91 dBA
Max. vibration level 30 mm/s-RMS