Overview
The GAVR-15B is a universal high-current 15A automatic voltage regulator using half-wave thyristor control for precise excitation management.
Key Features
- 15A Continuous Output — 90VDC max, aviation-grade potentiometer
- 220/440VAC Programmable Input — DIP-switch selectable
- Soft Start Voltage Ramping — Prevents voltage overshoot on startup
- Under-Frequency Roll-Off Protection — Automatic voltage reduction
- EMI Suppression Built-in — Clean power output
- High-Capacity 15A Fuse — Overcurrent protection
- Rugged Compact Design — Industrial durability
- ±1% Regulation — Stable voltage across full load range
Technical Specifications
| Parameter | Value |
|---|---|
| Sensing Input | 220/440VAC, DIP-switch programmable |
| Output Voltage | Max 90VDC @ 240VAC input |
| Output Current | Continuous 15A |
| Regulation Accuracy | <±1% |
| Frequency | 50/60 Hz |
| Excitation Type | Half-wave phase-controlled thyristor |
| Soft Start | Yes |
| UF Protection | Yes, with roll-off |
| EMI Suppression | Built-in |
| Potentiometer | Aviation-grade material |
Compatibility
Universal fit for large brushless generators.
Why Choose ZenixPower
- 15A high-current thyristor AVR
- Half-wave control for precise regulation
Specification Comparison
Competitors B series = A series + UF protection + EMI filtering. $2-4 more expensive. Priority recommendation: choose B series.
| Parameter | GAVR-8A | GAVR-8B | GAVR-15A | GAVR-15B |
| Output | 8A | 8A | 15A | 15A |
| UF Protection | Yes | Yes (enhanced) | Yes | Yes (enhanced) |
| EMI Filtering | Basic | Enhanced | Basic | Enhanced |
| Price | $10-18 | $12-20 | $15-25 | $18-28 |
Selection Advice
The B-series is a straightforward upgrade: take the A-series platform and add enhanced UF (under-frequency) protection with improved EMI filtering. For only $2-4 more per unit, the B-series provides measurably cleaner power output and better protection against voltage instability caused by electromagnetic interference. This is especially relevant for generators powering VFD-driven motors, welding equipment, or sensitive electronics. Unless the absolute lowest price is the only requirement, always recommend the B-series over the A-series counterpart. The price difference is negligible compared to the reduced risk of equipment damage from voltage spikes or EMI.
