R438 Automatic Voltage Regulator (AVR)

The R438 AVR ensures precise voltage control for generators using AREP or PMG excitation. It supports 100, 200, and 300 series generators, offering stable performance under varying loads.

Key Features:

• Voltage Regulation: <±0.5%
• Voltage Sensing: 95-520V (adjustable)
• Frequency: 50/60 Hz selectable
• Soft Start & Load Acceptance Module (LAM)
• Protection: Under-frequency & max excitation
• External Voltage Adjustment: ±10% (1kΩ, 1W trimmer)

Output:

• Max Voltage: 160VDC (120VAC input)
• Max Current: 8A
• Minimum Resistance: 15Ω
• Residual Voltage Requirement: ≥5VAC

Reliable and efficient for consistent generator voltage control.