





Sincro GKR 2 series Steel Alternators Brushes with Digital AVR 2 poles/1-phase,
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Sincro GKR 2 Series – 2-Pole Single-Phase Alternators with Digital AVR
Brushes – Digital AVR | 3000–3600 RPM | Self-Regulated | IP23
The Sincro GKR 2 Series represents the latest evolution in compact single-phase alternators, combining brush excitation with a Digital AVR system for precise voltage regulation and stable output under variable load conditions. Built with a robust steel frame and optimized for continuous-duty or standby applications, the GKR 2 series ensures high-performance power delivery in even the most demanding environments.
Designed for use in mobile generators, construction tools, emergency power, and agricultural applications, these alternators offer industry-standard mounting options such as IM B34, IM B35, and SAE to integrate seamlessly into your genset configuration.
Key Features:
2-pole operation: 3000 rpm @ 50 Hz / 3600 rpm @ 60 Hz
Single-phase output: 230 V – 50 Hz standard
Brush excitation with advanced Digital AVR for ±1% voltage accuracy
Self-regulated output for sensitive or fluctuating loads
IP23 protection – suitable for ventilated enclosures and semi-protected environments
Coupling options: IM B34, IM B35, SAE 3/4/5
Rugged steel housing ensures durability in mobile or stationary applications
Ideal for modern gensets requiring digital voltage control
Technical Overview (Model Details as Text):
GKR 2 LA
• Rated power at 50 Hz: 20 kVA
• Efficiency at 50 Hz: 83%
• Rated power at 60 Hz: 25 kVA
• Efficiency at 60 Hz: 85%
• Weight: 101 kg (IM B), 109 kg (SAE)GKR 2 LB
• Rated power at 50 Hz: 25 kVA
• Efficiency at 50 Hz: 85%
• Rated power at 60 Hz: 31 kVA
• Efficiency at 60 Hz: 87%
• Weight: 115 kg (IM B), 123 kg (SAE)
Applications:
Mobile or portable generator systems
Professional construction and contractor tools
Agricultural and irrigation power supply
Standby and emergency backup power
OEM diesel or petrol-powered generator integration
Environments requiring precision voltage for sensitive electronics
Voltage: 230 V – 50 Hz (standard)
Excitation System: Brushes with Digital AVR
Protection Rating: IP23
Coupling Compatibility: IM B34, IM B35, SAE
Technical Specifications
| Model | Power 50 Hz (kVA) | η 50 Hz (%) | Power 60 Hz (kVA) | η 60 Hz (%) | Mass IM B34/B35 (Kg) | Mass SAE 3/4/5 (Kg) |
|---|---|---|---|---|---|---|
| GKR 2 LA | 20 | 83 | 25 | 85 | 101 | 109 |
| GKR 2 LB | 25 | 85 | 31 | 87 | 115 | 123 |
*Power- S1 40°C • H class (kVA 230/240V 50/60Hz) – Continuous power output (S1 duty) at 230/240V, 50/60Hz, 40°C ambient, H class insulation; η (%) 50/60Hz – Efficiency at 50/60Hz
Dimensions
GK 2 LA 662x 300x 280 mm
GK 2 LB 662x 300x 280 mm
*Values may vary — see the GK series catalog for details.
Catalog:
Download main catalog Sincro 2 and 4 pole alternatorsfor portable and mobile gen-sets
Detailed information about the GK series:






















