Alternator Mecc Alte 8.5 KVA S20W-130/A Single Phase 3000 RPM

Mecc Alte S20W-130 Alternator — 8.5 KVA, single-phase, 3,000 RPM

The S20W-130 It is the most powerful model in Mecc Alte's single-phase range at 3,000 RPM, with a rated power of 8.5 KVA at 50 Hz. It is the top-of-the-line model in the S20W series and the most powerful single-phase alternator available in the Mecc Alte lineup at 3,000 RPM. Brushless with internal capacitor regulation; no moving electrical parts require maintenance.

Technical characteristics

Rated power (50 Hz): 8.5 kVA / 8.5 kW (power factor 1)
Output voltage: 230 V single-phase
Frequency: 50 Hz
Speed: 3,000 RPM
Phases: 1
Excitation type: regulation via built-in capacitor (40 µF)
THD: less than 5%
Full-load performance (cos φ = 1): 79%
Technology: brushless, no brushes or commutators, maintenance-free
Direction of rotation: clockwise when viewed from the coupling side
Protection rating: IP21 (IP23 available upon request)
Insulation class: H
Impregnation: tropicalized epoxy resin, resistant to high-humidity environments
Housing: high-strength die-cast aluminum alloy
Shaft: C45 steel with open-style fan
Sound level: 64 dBA at 7 m / 80 dBA at 1 m
Maximum operating temperature: 40°C at altitudes below 1,000 m
Weight: 34.9 kg
Country of manufacture: Italy

Certifications: EN 60034-1, IEC 34-1, VDE 0530, BS 4999-5000, NF 51.111
Directives: 2006/42/EC, 2006/95/EC, 2004/108/EC
Electromagnetic compatibility: EN 61000-6-3, EN 61000-6-1

Complete S20W Series

S20W-95: 6 KVA, 27.4 kg
S20W-110: 7 KVA, 30.5 kg
S20W-130: 8.5 KVA, 34.9 kg (this product)

Available coupling options

B9/c23 — C23-style bevel shaft coupling.

B9/c30 — C30-type bevel shaft coupling, with a larger shaft diameter than the C23.

J609b — J609b bevel shaft coupling.

Free-hub kit (B3B14) — Allows for pulley-and-belt mounting for motors without a bevel gear, compatible with previous models.

Dimension drawings for each coupling are available in the "Manuals" section of this page.

Do you need more than 8.5 KVA of single-phase power?

The S20W-130 is the highest-power alternator in Mecc Alte’s single-phase lineup at 3,000 RPM. If your application requires more power, your options are to switch to an operating speed of 1,500 RPM with the ECP series alternators—which range from 6.5 kVA to much higher power ratings in a three-phase configuration—or to consider a three-phase alternator with unbalanced loading if your installation allows it. If you have questions about which solution is best suited for your application, please contact us.

FAQ

Does the S20W-130 require an external capacitor?
No. The 40 µF excitation capacitor is built into the alternator and comes pre-installed from the factory.

What type of coupling do I need?
The B9/c23, B9/c30, and J609b types are bevel shaft couplings for direct mounting, available in various shaft and flange sizes. The free-shaft kit is for belt-and-pulley drive. If you have any questions, please contact us with the exact motor model before placing your order.

Are there any requirements regarding the direction of rotation?
Yes. To achieve the specified performance, the alternator must rotate clockwise as viewed from the coupling side. Check that your engine is rotating in the correct direction before starting it.

How often should maintenance be performed?
Since it is brushless, there are no brushes, commutators, or moving contacts to check. Maintenance is limited to cleaning the exterior and periodically checking the connections and bearings, following the intervals specified in the manual.