Basler Electric SSR 63‑12 Static Voltage Regulator

The Basler Electric SSR 63‑12 (part number 9 1859 00 101) is a solid‑state automatic voltage regulator designed for synchronous generators with sensing inputs up to 600 VAC at 50/60 Hz. It maintains the generator terminal voltage within ±1% of the setpoint from no‑load to full‑load, ensuring stable power supply for sensitive loads. The regulator is suitable for a wide range of generator ratings, from small standby sets to medium industrial units. Its simple design and robust construction make it a reliable choice for demanding applications.

Regulation and Control

The SSR 63‑12 uses a proportional‑integral (PI) control circuit with adjustable gain and stability to match generator and exciter characteristics. Voltage setpoint is adjustable from 90% to 110% of nominal via a front‑panel potentiometer. An under‑frequency roll‑off function reduces excitation when the frequency drops below 45 Hz, protecting the generator from over‑excitation. Droop control (0‑5%) enables reactive load sharing in parallel operation. A remote voltage trim input is provided for external adjustment.

Input and Output

Sensing input: up to 600 VAC, single‑phase or three‑phase, 50/60 Hz. The regulator derives its power from the sensing input, eliminating the need for a separate power supply. Excitation output: up to 90 VDC at 12 A continuous, suitable for most brushless exciters. Output is short‑circuit protected and current‑limited. A field current monitor terminal is provided for external metering.

Protection Features

Built‑in protections include short‑circuit protection on the field output, over‑voltage clamping, thermal overload, and loss of sensing detection (which shuts down excitation). A red LED indicates a fault, and a green LED confirms normal operation. The regulator automatically resets after fault clearing.

Technical Specifications

Operating temperature: –25°C to +60°C. Regulation accuracy: ±1%. Response time:<80 ms for 20% load change. Burden: <5 VA. Enclosure: rugged metal, suitable for panel mounting. Dimensions: 160 mm x 110 mm x 60 mm. Compliance with CE and RoHS.

Applications

This regulator is used on diesel, gas, and hydro generators in industrial plants, marine vessels, and renewable energy installations. Its high‑voltage sensing capability makes it suitable for medium‑voltage generator applications. It is also used in cogeneration and standby systems.

Installation and Adjustment

Mount the regulator on a flat surface. Connect the AC sensing wires to the generator output and the field wires to the exciter. Adjust the voltage setpoint with a screwdriver while monitoring the output voltage. The stability control is set to achieve stable response without hunting. A test mode is available for verification.

Reliability and Durability

Basler Electric’s SSR 63‑12 is built with high‑quality components and conformal‑coated PCBs to withstand moisture and dust. It operates reliably in ambient temperatures up to 60°C. With no moving parts, it offers long service life and minimal maintenance.

Conclusion

The Basler Electric SSR 63‑12 static voltage regulator (9 1859 00 101) is a dependable, cost‑effective solution for voltage control in generators with sensing up to 600 VAC. Its robust design and easy adjustment make it a preferred choice for a wide variety of power generation applications.