Basler Electric 9022900‑103 Control Transformer

The Basler Electric 9022900‑103 is a high‑quality control transformer designed to provide low‑voltage power for relay circuits, control logic, and auxiliary equipment in electrical panels and substations. With a power rating of 6‑7 VA and a frequency of 60 Hz, it converts a higher primary voltage (typically 120 or 240 VAC) to a lower secondary voltage suitable for control applications. The transformer is built with a rugged core and coil assembly, ensuring reliable performance and long service life.

Design and Materials

The transformer features a grain‑oriented silicon steel core for high efficiency and low magnetizing current. Coils are wound with copper magnet wire and insulated with high‑temperature varnish. The assembly is vacuum‑impregnated to prevent moisture ingress and reduce mechanical noise. Terminals are clearly labelled for primary and secondary connections, and a grounding terminal is provided for safety. The unit is housed in a durable metal enclosure with mounting feet for panel installation.

Electrical Specifications

Primary voltage: 120 VAC or 240 VAC (dual tap, user‑selectable). Secondary voltage: typically 24 VAC (other voltages available). Power rating: 6‑7 VA. Frequency: 60 Hz. Regulation:<10% from no‑load to full‑load. Insulation class: Class B (130°C). Temperature rise: 50°C above ambient. Dielectric withstand: 2500 V RMS between primary and secondary.

Protection and Safety

The transformer includes built‑in thermal overload protection (optional) to prevent damage from prolonged overloading. Primary and secondary windings are separated by reinforced insulation, providing galvanic isolation for safety. The unit complies with UL 508, CSA C22.2, and IEC 61558 standards for control transformers.

Applications

This transformer is used to power control relays, annunciators, PLCs, and small indicator lights in switchgear and motor control centers. It is also used in battery charging circuits and as an isolation transformer for test equipment. Its compact size makes it ideal for space‑constrained panels.

Installation and Maintenance

Mount the transformer on a flat, vibration‑free surface using the provided mounting feet. Connect primary and secondary leads according to the wiring diagram on the label. Ensure proper grounding. No routine maintenance is required beyond periodic inspection for loose connections and cleaning. Insulation resistance should be checked annually.

Reliability and Quality

Basler Electric’s 9022900‑103 transformer is manufactured under strict quality control, including hi‑pot testing, turns‑ratio verification, and core loss measurement. It is designed for a service life of over 20 years under normal operating conditions. The transformer is backed by Basler’s technical documentation and support.

Conclusion

The Basler Electric 9022900‑103 control transformer (UTC‑1689057) is a reliable, efficient, and safe solution for low‑voltage power supply in control circuits. Its high‑quality construction and proven performance make it a trusted component in power distribution and protection systems.