P. 25 - Chap. 4 Performance and specifications
G
B
4.3
Air receiver
Capacity of 270 or 500 litres according to model; type approved at 11 or 17 bar depending on the model.
4.4
Compressor
RM
5.5-15 kW
Patented VT series air-end unit, single stage, BA51 model, oil
injection lubricated
15 kW
Patented VT series air-end unit, single stage, BA69 model, oil
injection lubricated:
Drive male rotor RM, five lobes, offset profile
Driven female rotor RF, six flutes, offset profile
RF
4.5
Electrical motors and drives
Compressor start-up
Fixed speed motors
Two-pole, closed, three-phase asynchronous motor (rated speed of 3000 rpm at 50 Hz, 3600 rpm at 60 Hz,
protection rating IP54, insulation class F, service class S1, reference MP in Figs. 14, 16, 18, 20, 22, 24)
Variable speed motors
Four-pole closed three-phase asynchronous motor (rated speed of 1500 rpm at 50 Hz, protection rating IP54,
insulation class F, service class S1, reference MP in Figs. 14, 16, 18, 20, 22, 24), intended for use at variable
speed through powering with inverter
Electric fan
Fan coaxial to the electrical motor (reference EV in Figs. 13, 15, 17, 19, 21, 23)
Drives
Compressor motor - drive by means of removable taper bushing pulleys and toothed V-belts (reference
CT
in Figs. 13, 15, 17, 19, 21, 23)
Electric fan: direct, co-axial transmission
4.6
Power supply data
Three-phase power supply; voltage and frequency according to rating data. Supply cables with a minimum
cross-section area as shown in tables 1and 2. Mains fuses and ground circuit breaker as shown in the fol-
lowing table.
Fig. 26
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