Basler BE 02727 001 Transformer
The Basler BE 02727 001 is a high‑quality control transformer designed for power supply and isolation in industrial control circuits. It steps down incoming line voltage to a lower voltage suitable for operating relays, contactors, and electronic controllers, while providing electrical isolation between primary and secondary circuits.
Design and Construction
This transformer features a grain‑oriented silicon steel core with high permeability, minimising core losses and providing efficient energy transfer. The windings are double‑insulated with Class B (130 °C) insulation, and the entire assembly is vacuum‑impregnated with varnish to protect against moisture and vibration. Terminals are clearly marked for easy connection.
Key Specifications
Primary voltage: 120 VAC / 240 VAC (dual tap).
Secondary voltage: 24 VAC (centre‑tapped or isolated).
Power rating: 100 VA continuous.
Frequency: 50/60 Hz.
Insulation resistance: > 100 MΩ at 500 VDC.
Dielectric strength: 1500 VAC for 1 minute.
Electrical Characteristics
The BE 02727 001 has a regulation factor of approximately 5 % from no load to full load, ensuring stable secondary voltage under varying loads. It exhibits low exciting current and low harmonic distortion, making it suitable for feeding sensitive electronic loads. The temperature rise is limited to 45 °C above ambient at rated load.
Installation and Mounting
Mount the transformer on a flat, vertical surface using the slotted mounting feet. Ensure adequate space for air circulation around the enclosure. Connect the primary leads to the supply via a fused disconnect switch. The secondary output should be protected by an appropriately rated fuse or circuit breaker.
Wiring Instructions
For 120 V primary, connect the line to terminal H1 and neutral to H4; for 240 V, connect line to H1 and H3, with H2 and H4 jumpered. The secondary terminals are labelled X1, X2, and X3 (centre tap). For 24 VAC use X1‑X2 or X1‑X3; for 12‑0‑12 V, use X1‑X3 with centre tap X2. Always ground the secondary centre tap or one side as required by the application.
Applications
Typical uses include supplying power to programmable logic controllers (PLCs), indicator lamps, solenoid valves, and small relay panels. It is also employed as an isolation transformer for test equipment to reduce noise and improve safety.
Environmental Ratings
The transformer is rated for operation in ambient temperatures from -20 °C to +50 °C, with relative humidity up to 95 % non‑condensing. It is suitable for indoor use in industrial environments.
Maintenance
Periodically check for dust accumulation on the core and windings. Clean with dry compressed air. Inspect terminations for signs of overheating or corrosion. Re‑tighten connections after the first month of operation and annually thereafter.
Safety and Standards
The BE 02727 001 is designed in accordance with UL 5085 and CSA 22.2. It includes thermal overload protection and is double‑insulated for enhanced safety. The transformer meets RoHS compliance requirements.
Conclusion
With its robust construction and reliable performance, the Basler BE 02727 001 Transformer is an excellent choice for control power applications. Its versatility and compliance with international standards make it a preferred component in industrial control panels.
