Sincro GK4 series Steel Self-regulated Alternators 4-poles/1-phase

Sincro GK4 Series – 4-Pole Single-Phase Steel Alternators

Brushless – Capacitor | Self-Regulated | 1500–1800 RPM | IP23

The Sincro GK4 Series features heavy-duty, self-regulated 4-pole brushless alternators built to deliver quiet, stable, and efficient single-phase power. With a capacitor excitation system, rugged steel construction, and a wide range of coupling options, GK4 alternators are engineered for continuous-duty performance in both fixed and mobile generator applications.

These alternators offer exceptional electrical efficiency and durability in compact formats, making them ideal for demanding industrial, agricultural, and off-grid installations.

Key Features:

• 4-pole design: 1500 rpm (50Hz) / 1800 rpm (60Hz)

• Self-regulated brushless output with capacitor excitation

• Stable single-phase 230V power generation

• Short circuit current greater than 3 × In

• IP23 protection rating for ventilated environments

• High mechanical durability with steel body construction

• Coupling compatibility: IM B34, IM B35, SAE 3/4/5

• Ideal for quiet, long-duty operations

 Technical Overview:

• GK 4 MB:
  13.5 kVA at 50Hz, 81.5% efficiency
  16.2 kVA at 60Hz, 83.1% efficiency
  Weight: 85 kg (IM B), 101 kg (SAE)

• GK 4 LA:
  16.0 kVA at 50Hz, 83.1% efficiency
  19.2 kVA at 60Hz, 84.2% efficiency
  Weight: 101 kg (IM B), 117 kg (SAE)

• GK 4 LB:
  17.5 kVA at 50Hz, 85.1% efficiency
  21.0 kVA at 60Hz, 86.6% efficiency
  Weight: 121 kg (IM B), 137 kg (SAE)

 Applications:

• Industrial generator systems for continuous operation

• Backup power for workshops, farms, and rural properties

• Agricultural and irrigation systems

• OEM generator designs requiring single-phase, low-speed units

• Commercial and telecom power solutions

• Quiet residential or commercial backup setups

Voltage Output: 230 V – 50 Hz (standard)
Excitation: Brushless – Capacitor
Protection: IP23
Short Circuit Current: > 3 × In
Couplings: IM B34, IM B35, SAE 3, 4, 5