Basler BE26434 T14 Multi-Tap Control Transformer – Versatile Voltage Conversion

The Basler BE26434 T14 is a high-quality control transformer designed for industrial and power generation applications. It features a primary winding with multiple taps that allow input voltages of 200, 210, 220, 230, 240, 250 V (low range) or 440, 460, 470, 490 V (high range), providing flexibility for worldwide grid voltages. The secondary delivers an isolated low-voltage output to power control electronics, such as voltage regulators, relays, and PLCs.

Design and Construction

Built with grain-oriented silicon steel laminations and fully insulated copper windings, the BE26434 T14 offers low losses and high efficiency. The transformer is vacuum-impregnated with a moisture-resistant varnish to withstand harsh industrial environments. Its terminal block allows easy tap selection via jumper straps.

Electrical Specifications

• Primary Voltage Options: 200/210/220/230/240/250 V or 440/460/470/490 V (selectable)

• Secondary Voltage: Typically 120 V or 240 V (center-tapped) – consult nameplate

• Rating: 1.5 kVA continuous

• Frequency: 50/60 Hz

• Insulation Class: Class B (130°C)

• Isolation: 2500 VAC between primary and secondary

Tap Selection

To accommodate different input voltages, the user connects the line supply to the appropriate tap terminal. The transformer also includes a compensating winding to maintain output voltage stability under load variations.

Installation and Mounting

The transformer is designed for chassis mounting with four M8 screws. It has a ventilated steel enclosure with knockouts for conduit connections. Proper sizing of primary and secondary overcurrent protection is required per local codes.

Applications

This transformer is commonly used to supply power to Basler voltage regulators, excitation systems, and other generator control modules. It is also used in motor control centers, HVAC systems, and industrial automation panels where multiple voltage inputs are encountered.

Thermal Performance

With a temperature rise of less than 50°C above ambient, the BE26434 T14 operates safely in ambient temperatures up to 60°C. An embedded thermal switch can be added as an option for overtemperature protection.

Maintenance

Routine maintenance involves periodic cleaning of dust from ventilation openings and inspection of connections for tightness. The transformer does not require regular recalibration.

Compliance

This product meets UL 5085 and IEC 61558 safety standards, and is RoHS compliant.

Conclusion

The Basler BE26434 T14 transformer offers exceptional versatility and reliability, making it an essential component for global power system installations.