Basler Electric SSR125‑12 Static Voltage Regulator (9185900102)
The Basler Electric SSR125‑12 (part number 9185900102) is a compact static voltage regulator designed for brushless AC generators. It provides accurate automatic voltage regulation (AVR) by controlling the excitation current to maintain the generator’s output voltage within ±1% of the setpoint under varying load conditions. This model is ideal for small to medium‑sized generating sets in industrial, marine, and backup power applications.
The SSR125‑12 features a simple analog control circuit with minimal components, ensuring high reliability and fast transient response. It includes built‑in under‑frequency roll‑off to protect the generator from over‑excitation during low‑speed operation, and over‑voltage protection to safeguard connected loads.
Key Features
Voltage regulation accuracy: ±1%
Adjustable voltage range: 90–240 VAC
Continuous output current: 12 A DC
Under‑frequency roll‑off with adjustable knee point
Over‑excitation and field short‑circuit protection
Remote voltage trim capability
Technical Specifications
Input power: 120/240 VAC, 50/60 Hz; output: 0–12 A DC, 125 VDC max; response time: < 30 ms; operating temperature: -40°C to +70°C; dimensions: 120 x 100 x 40 mm; weight: 0.5 kg.
Applications
Commonly used in portable generators, agricultural power units, and telecommunications backup sets. The SSR125‑12 ensures stable voltage for sensitive electronic equipment, reducing the risk of damage from voltage fluctuations.
Installation and Tuning
Mount the regulator on a flat panel using the integrated mounting holes. Connect the generator’s voltage sensing leads and the field winding terminals. Adjust the voltage setpoint using the front‑panel potentiometer. The stability and damping can also be tuned to match the generator’s dynamic characteristics.
Protection and Durability
Built‑in protections include loss‑of‑sensing shutdown, over‑voltage clamping, and thermal overload protection. The PCB is coated with a moisture‑resistant lacquer to enhance reliability in humid or dusty environments.
Why Choose the SSR125‑12?
This regulator offers an excellent balance of performance and cost, backed by Basler Electric’s decades of experience in excitation systems. Its straightforward installation and adjustment make it a favourite among generator manufacturers and service technicians.
In summary, the Basler Electric SSR125‑12 is a dependable and efficient voltage regulator that ensures consistent generator output, prolonging equipment life and improving power quality.
