Basler Electric SR4A2310B1A – High‑Output Static Voltage Regulator
The Basler Electric SR4A2310B1A is a robust static voltage regulator engineered to deliver precise excitation control for synchronous generators. With a continuous output current rating of 10 A, this regulator is particularly suited for medium‑sized alternators requiring stable and responsive voltage regulation under varying load conditions. Its solid‑state design ensures high reliability, fast transient response, and minimal maintenance, making it a trusted choice for industrial, marine, and standby power applications.
Core Regulation Features
The SR4A series employs a pulse‑width modulated (PWM) power stage that provides high efficiency and low harmonic distortion. The regulator continuously compares the generator terminal voltage with an adjustable reference and modulates the field current to maintain the setpoint within ±0.5% accuracy. The SR4A2310B1A includes a comprehensive set of adjustments: a voltage trimpot allows fine‑tuning from 90% to 110% of nominal output, a stability control matches the regulator response to the generator’s inertia and time constants, and a droop adjustment enables parallel operation of multiple generators with accurate reactive power sharing.
Input sensing: 120/240 V AC, 50/60 Hz (field‑selectable)
Output current: 10 A continuous (15 A for 10 seconds)
Output voltage: up to 90 V DC (field dependent)
Regulation accuracy: ±0.5% from no‑load to full‑load
Voltage adjustment range: ±10% of rated value
Droop compensation: adjustable 0–5% for paralleling
Under‑frequency roll‑off: adjustable knee point (45–60 Hz)
Soft‑start: gradual voltage build‑up on initial excitation
Protections: over‑excitation limiting, loss of sensing, short circuit
LED indicators: power, regulation, and fault status
Mounting: panel or chassis with integral heat sink
Operating temperature: –20 °C to +60 °C
Typical Applications
This regulator is ideal for generator sets ranging from 100 kVA to 600 kVA, commonly found in data centres, hospitals, manufacturing facilities, and marine vessels. Its robust output stage supports both brushless and static excitation systems, providing dependable voltage support for motor starting, transformer energisation, and nonlinear electronic loads. The SR4A2310B1A also integrates seamlessly with Basler’s range of protection relays and synchronising equipment.
Installation and Field Configuration
Mounting is straightforward using the pre‑drilled holes, and all electrical connections are made via clearly labelled, pluggable terminal blocks. The regulator features front‑accessible trimpots for voltage, stability, and droop, enabling rapid commissioning without specialised tools. An optional remote voltage adjustment input allows operators to fine‑tune the generator output from a control panel. Diagnostic LEDs provide immediate visual feedback on power status and regulation health, simplifying troubleshooting.
Built for Demanding Environments
Constructed with industrial‑grade semiconductors and conformal‑coated circuit boards, the SR4A2310B1A is protected against moisture, dust, and vibration. It undergoes rigorous thermal cycling and surge immunity testing to comply with IEEE C37.90 and IEC 60255 standards. Basler Electric’s decades of experience in excitation control ensure that this regulator delivers consistent, maintenance‑free performance over its extended service life.
In summary, the Basler Electric SR4A2310B1A static voltage regulator combines high output capacity, precise control, and rugged durability, making it a superior solution for reliable generator voltage regulation in critical power applications.
