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CONSTRUCTION DETAILS
Housing in aluminium extruded section into which a stator pack is inserted.
Such stator pack is obtained from low loss magnetic sheet.
Front and rear shields are in die-casting aluminium alloy with ventilation opening protected by heat resistant mesh.
Rotor in magnetic sheet slotted to protect the rotor winding from overspeed .
Shaft in C40 steel, self-lubricated bearing with double seal protection (2RS).
Axial ventilation with polyamide fan - radial blades.
Accurate machining of coupling elements guarantees an easy and sure assembly.
Generators are manufactured with shapes BR/B9 and B3/B14 with dimensions and coupling flanges as stated in the overall dimensions table.
Stator winding insulated according to F class, H class rotor impregnated with epoxy varnish.
The normal degree of protection is IP121 according to UNEL 05515-71 and IEC 34-5 international standards. On request is possible to supply IP23.
TECHNICAL CHARACTERISTICS
The data stated in the tables are applicable to following conditions: environmental temperature not exceeding 40°C - height not exceeding 1000m a.s.l. - continuous duty.
Self-excitation is by residual magnetism, whereas self-adjustment is obtained by the compound system.
With generator running, voltage accuracy is kept within ±5%. With full load on at cosø= 1 to 0.8, the voltage drop is kept within ±8%.
three-phase asynchronous motor starting: With a 20% drop at terminals the generator delivers current equal to ~ 3ln (three times the rated current).
With a symmetrical short-circuit the current remains more than 3In (three times the rated current).
With full load on the voltage returns to its rated value in about 0.1".
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2 POLES 230/400V - 3000/3600 RPM - 50/60 Hz
Three Phase Synchronous Generator
Values at rated output
| CODE | Power kVA | Power kW | Power factor | Efficiency |
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| GST4 | 4 | 3,2 | 0,8 | 0,73 |
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| GST5.5 | 5,5 | 4,4 | 0,8 | 0,75 |
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| GST6,5 | 6,5 | 5,2 | 0,8 | 0,78 |
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| GST8 | 8 | 6,4 | 0,8 | 0,8 |
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| GST10 | 10 | 8 | 0,8 | 0,81 |
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4 POLES 230/400V - 1500/1800 RPM - 50/60 Hz
Three Phase Synchronous Generator
Values at rated output
| CODE | Power kVA | Power kW | Power factor | Efficiency |
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| GST6,5 | 6,5 | 5,2 | 0,8 | 0,75 |
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| GST8 | 8 | 6,4 | 0,8 | 0,78 |
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| GST10 | 10 | 8 | 0,8 | 0,79 |
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| GST13,5 | 13,5 | 10,8 | 0,8 | 0,81 |
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| GST16 | 16 | 12,8 | 0,8 | 0,83 |
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| GST22,5 | 22,5 | 18 | 0,8 | 0,85 |
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| GST27 | 27 | 21,8 | 0,8 | 0,86 |
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2 POLES 230/400V - 3000/3600 RPM - 50/60 Hz
Three Phase Synchronous Generator
Values at rated output
| CODE | Power kVA | Power kW | Power factor | Efficiency |
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| GST13 | 13,5 | 10,8 | 0,8 | 0,78 |
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| GST17 | 16,5 | 13,2 | 0,8 | 0,80 |
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| GST22 | 22 | 18 | 0,8 | 0,83 |
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| GST27 | 27 | 21,6 | 0,8 | 0,85 |
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| GST31 | 31,5 | 25,5 | 0,8 | 0,86 |
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| GST38 | 38 | 30,4 | 0,8 | 0,88 |
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Copyright © 1995, italtec srl.
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