Sincro SK400/450 4-pole Alternators for industrial gen-sets (1500-1800 rpm)

Sincro SK 400 / 450 Series

4-Pole Synchronous Alternators for Industrial Gen-Sets 3-Phase, 1500/1800 rpm

Key Features

The Sincro SK 400/450 series delivers premium performance for demanding industrial applications, offering power outputs from 800 to 1800 kVA at 50 Hz. These low voltage AC alternators combine reliability with precision voltage regulation to ensure stable power supply across various industrial environments.

Technical Specifications

• Configuration: Three-phase, brushless with AVR
• Protection Class: IP23
• Insulation Class: H
• Voltage Regulation Accuracy: ± 0.25%
• Terminal Connections: 6 leads
• Winding Pitch: 2/3
• Short Circuit Current Capability: > 300% In for 10 seconds
• Excitation System: Brushless with Permanent Magnet Generator (PMG)
• Total Harmonic Distortion: < 2%
• Voltage Regulator: Digital AVR DBL 1

Comprehensive Power Solutions for Industrial Applications

The Sincro SK 400/450 series offers a versatile range of 4-pole synchronous alternators designed specifically for industrial generator sets, with power outputs spanning from 800 to 2356 kVA.

Product Range Overview

The series includes two main families:

• SK 400 Series: Models SD, SE, SF, and SG (800-1320 kVA at 50Hz)
• SK 450 Series: Models ME, MF, MG, and LE (1300-1800 kVA at 50Hz)

Operating Specifications

• Frequency Options:
  • 50 Hz at 1500 RPM
  • 60 Hz at 1800 RPM
• Voltage Configurations:
  • Star (Y): 380V, 400V, 415V (50Hz); 416V, 440V, 480V (60Hz)
  • Delta (Δ): 220V, 230V, 240V (50Hz); 240V, 254V, 277V (60Hz)

Service Classes

• S1 40/105°C cl. F: Continuous duty at 40°C ambient, class F temperature rise
• S1 40/125°C cl. H: Continuous duty at 40°C ambient, class H temperature rise
• Stand by 27/163°C: Emergency standby power at 27°C ambient temperature

Power Output Range

• 50Hz Operation:

  • SK 400 SD: 737-858 kVA
  • SK 400 SE: 829-966 kVA
  • SK 400 SF: 921-1073 kVA
  • SK 400 SG: 1013-1180 kVA
  • SK 450 ME: 1197-1395 kVA
  • SK 450 MF: 1382-1610 kVA
  • SK 450 MG: 1474-1717 kVA
  • SK 450 LE: 1658-1932 kVA

60Hz Operation:

• Power output increases to maximum 2356 kVA (SK 450 LE)

Efficiency Performance

• Industry-leading efficiency ratings from 94.7% to 96.6%
• Higher efficiency models (SK 450 series) deliver exceptional performance with up to 96.6% efficiency at 60Hz

Compliance & Standards

Fully compliant with EN 60034-1, IEC 60034-1, and ISO8528-3 standards. Electromagnetic compatibility according to EN 61000-6-2 and EN 61000-6-4.

Performance Features

• Heavy-Duty Bearings: Dimensioned for continuous operation in demanding conditions
• Superior Transient Response: Voltage drop less than 18% for rated step load at 0.8 power factor
• Standard Tropicalization: Built to withstand harsh environmental conditions

Operational Parameters

• Designed for ambient temperatures up to 40°C
• Operational at altitudes below 1000m above sea level
• Optimized for 0.8 power factor applications
• Engineered for symmetrical non-distorting loads
• Stand-by ratings based on maximum 27°C ambient temperature

The SK 400/450 series is ideal for continuous power supply applications where reliability and performance are paramount, offering dependable backup during utility power failures with no compromise on power quality.