2 and 4 pole alternators
for industrial gen-sets
2 and 4 Pole Alternators
for Industrial Generator Sets
Sincro's comprehensive range of synchronous low voltage AC alternators (IP23) delivers reliable power generation solutions for industrial applications. Available in both 2-pole (3000/3600 RPM) and 4-pole (1500/1800 RPM) configurations, these brushless alternators feature power outputs from 6.5 kVA to 2600 kVA. All models come with analog or digital AVR technology, with various SAE coupling options for flexible integration. Designed with Italian engineering precision, these alternators provide optimal performance for industrial power generation across diverse operating conditions
3-phase/4-poles (1500-1800 rpm) models:
3-phase/2-poles (3000-3600 rpm) models:
Supercompact models:
3-phase/4-poles (1500-1800 rpm) models:
FB4 series
4 pole alternators for industrial gen-sets
The Sincro FB4 series offers compact, robust, and highly reliable 4-pole brushless alternators for industrial generator sets. Operating at 1500/1800 rpm (50/60 Hz), these three-phase alternators feature AVR voltage regulation (±1% accuracy), insulation class H, and IP23 protection. Suitable for continuous and standby applications, the FB4 series delivers excellent voltage stability and can be configured for single-phase use. Built for heavy-duty environments, it ensures consistent performance even under demanding load conditions.
Electric data:
-
Insulation class: H
-
Leads: 6
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4 - u
-
Voltage regulation accuracy*: ≥ 1%
-
Electromagnetic compatibility: EN 61000-6-2 - EN 61000-6-4
-
Total harmonic content**: < 3%
-
Telephone Harmonic Factor**: < 3%
-
Underspeed protection: standard vers.
-
Insulation system according to UL 1446: on request
*With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: FB4 alternators can be connected for single-phase use
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
HB4 series
4 pole alternators
for industrial gen-sets
The Sincro HB4 series includes three-phase, low-voltage synchronous alternators with AVR regulation, designed for industrial generator sets. Operating at 1500/1800 rpm (50/60 Hz), they feature 12 leads, insulation class H, IP23 protection, and excellent voltage stability (±1%). These brushless alternators offer reliable performance under demanding conditions, support single-phase operation, and deliver high short-circuit current (>350% In) with low harmonic distortion (<2.5%).
Electric data:
-
Insulation class: H
-
Leads: 12
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy*: ± 1%
-
Electromagnetic compatibility: EN 61000-6-4
-
Short circuit current: > 350 % In
-
Total harmonic content**: < 2,5 %
-
Telephone Harmonic Factor**: < 3%
-
Underspeed protection: standard
-
Insulation system according to UL 1446: on request
*With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: HB alternators can be connected for single-phase use
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
IB4 series
4 pole alternators
for industrial gen-sets
The IB4 Series from Sincro are low-voltage, 3-phase, brushless AC alternators equipped with AVR regulation. Designed for industrial generator sets, these alternators offer reliable performance with ±1% voltage regulation, high transient response, and operation flexibility including single-phase configuration. Built to withstand demanding conditions with Class H insulation and IP23 protection, the IB4 alternators deliver stable power in 25–50 kVA ranges at 1500 rpm.
Electric data:
-
Insulation class: H
-
Leads: 12
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy*: ± 1%
-
Electromagnetic compatibility: EN 61000-6-4
-
Short circuit current: > 350 % In
-
Total harmonic content**: < 2,5 %
-
Telephone Harmonic Factor**: < 3%
-
Underspeed protection: standard
-
Insulation system according to UL 1446: on request
*With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: HB alternators can be connected for single-phase use
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
SK225 series
4 pole alternators
for industrial gen-sets
The SK 225 series features brushless 4-pole alternators with AVR for precise voltage control and Class H insulationfor high thermal performance. Rated 65–140 kVA at 50 Hz, these units are ideal for industrial gensets, offering low harmonic distortion, IP23 protection, and heavy-duty bearings for long life.
Electric data:
-
Insulation class: H
-
Leads: 6*
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy**: ≤± 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300 % In for 10s
-
Total harmonic content***: < 2 %
-
Telephone harmonic factor***: < 2,5 %
-
Underspeed protection: standard version
-
Winding pitch: 2/3
* 12 on request
** With load from 0 to 100%, speed variation from –2% to +5%, power factor 0,8 linear and balanced load
*** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 p.f. is less than 18%
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
SK280 series
4-Pole Synchronous Alternators for Industrial Generator Sets
The Sincro SK 280 series delivers high-efficiency 3-phase power generation for industrial applications. These low-voltage, brushless alternators operate at 1500/1800 RPM and feature AVR regulation, Class H insulation, and IP23 protection. With robust transient performance and harmonic suppression, the SK 280 is ideal for demanding continuous or standby power systems in the 160–350 kVA range.
Electric data:
-
Insulation class: H
-
Leads: 6*
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy**: ± 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300 % In
-
Total harmonic content***: < 2 %
-
Telephone harmonic factor***: < 2,5 %
-
Underspeed protection: standard version
-
Winding pitch: 2/3
* 12 on request (except for models SK 280 LS - SK 280 LL - SK 280 WL)
** With load from 0 to 100%, speed variation from –2% up to +5%, p,f. 0,8 linear and balanced load
*** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 p.f. is less than 18%
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
SK355 series
4-Pole Synchronous Alternators for Industrial Generator Sets
Sincro SK 355 alternators provide robust and reliable 3-phase power from 400 to 800 kVA. These brushless, low-voltage machines feature AVR regulation, operate at 1500/1800 RPM, and are built for heavy-duty industrial generator sets. With Class H insulation, IP23 protection, and high transient stability, they ensure consistent performance in both prime and standby applications.
Electric data:
-
Insulation class: H
-
Leads: 6*
-
Excitation system: Brushless
-
Voltage regulator type: AVR DBL1 digital
-
Voltage regulation accuracy**: ± 0,25%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300 % In
-
Total harmonic content***: < 2 %
-
Telephone harmonic factor***: < 2 %
-
Underspeed protection: standard version
-
Winding pitch: 2/3
* 12 on request (except for SK 355 MS, SK 355 LS, SK 355 WL models)
** With load from 0 to 100%, speed variation from –2% up to +5%, p,f. 0,8 linear and balanced load
*** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 p.f. is less than 18%
-
Tropicalization: Standard
-
PMG for excitation: On request
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
SK400/450 series
4-Pole Synchronous Alternators for Industrial Generator Sets
The SK 400/450 series from Sincro are heavy-duty, 3-phase synchronous alternators designed for industrial generator sets. Operating at 1500/1800 RPM, these low-voltage brushless alternators with AVR control deliver stable power output from 800 to 1800 kVA. Built with Class H insulation and IP23 protection, they ensure efficiency and durability in demanding power applications.
Electric data:
-
Insulation class: H
-
Leads: 6
-
Winding pitch: 2/3
-
Excitation system: Brushless + PMG*
-
Voltage regulator type: AVR DBL 1 DIGITAL
-
Voltage regulation accuracy**: + 0,25%
-
Electromagnetic compatibility: EN 61000-6-2 - EN 61000-6-4
-
Short circuit current: > 300 % In for 10s
-
Total harmonic content***: < 2%
-
Underspeed protection: Standard vers.
* PERMANENT MAGNET GENERATOR
** With load from 0 to 100%, speed variation from –2% to +5%, power factor 0,8 linear and balanced load
*** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
SK500 series
4-Pole Synchronous Alternators for Industrial Generator Sets
The SK500 series from Sincro is engineered for top-tier industrial power generation. These 4-pole, brushless alternators with Permanent Magnet Generator (PMG) excitation deliver up to 2600 kVA at constant speeds of 1500/1800 RPM. Featuring ±0.25% voltage regulation, Class H insulation, IP23 protection, and exceptional electrical stability, SK500 alternators ensure peak performance in mission-critical applications.
Electric data:
-
Insulation class: H
-
Leads: 4
-
Excitation system: Brushless + PMG*
-
Voltage regulation accuracy**: ± 0,25%
-
Electromagnetic compatibility: EN 61000-6-2 - EN 61000-6-4
-
Short circuit current: > 300 % In for 10s
-
Total harmonic distorsion***: < 2%
-
Underspeed protection: Standard vers.
* PERMANENT MAGNET GENERATOR
** With load from 0 to 100%, speed variation from –2% to +5%, power factor 0,8 linear and balanced load
***Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN60034-1, IEC 60034-1, ISO8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator
3-phase/2-poles (3000-3600 rpm) models:
FB2 series
2-Pole Synchronous Alternators for Industrial Generator Sets
The Sincro FB2 series features high-performance, compact 2-pole alternators engineered for industrial generator sets. Operating at 3000/3600 RPM, these brushless units with AVR regulation deliver between 12.5 and 19 kVA at 50 Hz (up to 22.8 kVA at 60 Hz). With Class H insulation, IP23 protection, and ±1% voltage accuracy, FB2 alternators provide efficient and dependable power for smaller-scale industrial applications.
Electric data:
-
Insulation class: H
-
Leads: 6
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4 - u
-
Voltage regulation accuracy*: ÷ 1%
-
Electromagnetic compatibility: EN 61000-6-4, EN 61000-6-2
-
Short circuit current: > 250% In
-
Total harmonic content**: < 4,5%
-
Telephone Harmonic Factor** < 3%
-
Underspeed protection: standard vers.
-
Insulation system according to UL 1446: on request
*With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
**Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23; higher protection degree on request
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: FB2 alternators can be connected for single-phase use
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator, AVR power supply – source of power that feeds the Automatic Voltage Regulator
IB2 series
2-Pole Synchronous Alternators for Industrial Generator Sets
The Sincro IB2 series offers high-performance 2-pole alternators designed for industrial generator sets. Delivering 28 to 66 kVA at 3000 RPM (50 Hz), these brushless units feature AVR control, Class H insulation, IP23 protection, and ±1% voltage regulation. Engineered for durability and precise power delivery, the IB2 alternators are ideal for compact and medium-scale industrial power systems.
Electric data:
-
Insulation class: H
-
Leads: 6
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4 - U
-
Voltage regulation accuracy*: ± 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300% In
-
Total harmonic content**: < 2,5%
-
Telephone Harmonic Factor**: < 3%
-
Underspeed protection: standard vers.
-
Insulation system according to UL 1446: on request
* With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, IS0 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 16%
-
Single-phase operation: IB2 alternators can be connected for single-phase use
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator, AVR power supply – source of power that feeds the Automatic Voltage Regulator
SUPERCOMPACT models:
SK160 series
2-Pole Supercompact Synchronous Alternators for Industrial Generator Sets
The Sincro SK160 series features compact, brushless 2-pole alternators for industrial gen-sets, delivering 15–44 kVA at 50/60 Hz. Designed for continuous-duty applications, these low-voltage AC alternators include AVR regulation (±1%), Class H insulation, and IP23 protection. Engineered for high-speed operation and tight spaces, SK160 units ensure reliable performance, low harmonic distortion (<3%), and compatibility with both three-phase and single-phase use.
Electric data:
-
Insulation class: H
-
Leads: 6
-
Excitation system: Brushless
-
Voltage regulator type : AVR BL4-U
-
Voltage regulation accuracy*: ± 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300 % In
-
Total harmonic content**: < 3%
-
Telephone Harmonic Factor**: < 2,5%
-
Insulation system according to UL 1446 : on request
-
Underspeed protection: standard vers.
* With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: SK160 alternators in three-phase version can be connected for single-phase use
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator, AVR power supply – source of power that feeds the Automatic Voltage Regulator
SK160 series
4-Pole/3-phase Supercompact Synchronous Alternators for Industrial Generator Sets
The Sincro SK160 series features ultra-compact 3-phase brushless alternators with AVR control, designed for industrial generator sets. Operating at 1500/1800 RPM, they deliver reliable output from 8.5 to 44 kVA in a space-saving design. With Class H insulation, IP23 protection, ±1% voltage regulation, and excellent harmonic control, SK160 alternators are ideal for compact installations requiring high efficiency and dependable performance.
Electric data:
-
Insulation class: H
-
Leads: 12
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy*: ≥ 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300% In
-
Total harmonic content**: < 3%
-
Telephone Harmonic Factor**: < 2,5%
-
Insulation system according to UL 1446: on request
-
Underspeed protection: standard vers.
* With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: SK160 alternators in three-phase version can be connected for single-phase use
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator, AVR power supply – source of power that feeds the Automatic Voltage Regulator
SK160 series
Compact 4-Pole Single-Phase Alternator for Industrial Gen-Sets
The Sincro SK160 offers a powerful and space-saving solution for industrial generator sets. This 4-pole, single-phase brushless alternator delivers up to 14 kVA at 50 Hz with ±1% AVR voltage regulation, IP23 protection, and Class H insulation. Its ultra-compact size, low maintenance design, and high efficiency make it ideal for OEMs, mobile power units, and space-restricted industrial applications.
Electric data:
-
Insulation class: H
-
Leads: 4
-
Excitation system: Brushless
-
Voltage regulator type: AVR BL4-U
-
Voltage regulation accuracy*: ≥ 1%
-
Electromagnetic compatibility: EN 61000-6-2, EN 61000-6-4
-
Short circuit current: > 300% In
-
Total harmonic content**: < 3%
-
Telephone Harmonic Factor**: < 2,5%
-
Insulation system according to UL 1446: on request
-
Underspeed protection: standard vers.
* With load from 0 to 100%, speed variation from –2% up to +5%, power factor 0,8 linear and balanced load
** Line to line, at full linear and balanced rated load
Technical information:
-
Standards: EN 60034-1, IEC 60034-1, ISO 8528-3
-
Protection degree: Standard is IP23
-
Bearings: Bearings are dimensioned for heavy duty
-
Transient features: Transient voltage drop for rated step load at 0,8 power factor is less than 18%
-
Single-phase operation: SK160 alternators in three-phase version can be connected for single-phase use
-
Tropicalization: Standard
S1 40°C H class – Continuous power rating at 40°C with H-class insulation; 400V 50Hz / 480V 60Hz – Output in kVA at standard voltages/frequencies; p.f. 0.8 50Hz / 60Hz – Efficiency (%) at power factor 0.8; Leads(¹) – Number of terminals for wiring options, AVR – Type of voltage regulator, AVR power supply – source of power that feeds the Automatic Voltage Regulator