Engineered for vertical transit controllers, lift brake rectifiers, automatic door drives, and hoistway safety chains with guaranteed low hum and minimal thermal dissipation.
Multi-Tap Primary & Secondary Flexibility
Seamlessly stepping between 480V, 440V, 400V, 380V down to 220V, 110V, 48V and 24V control levels across international power grids.
100% Bench Inspected & Burn-in Tested
LCR bridge, impulse winding surge testing, and Hi-pot dielectric checks conducted before any unit leaves our workshop.
Direct galvanic auto-coupling reduces core & copper losses, delivering operational efficiency beyond 98.5%.
Custom taps accommodate fluctuating building mains from 380V up to 480V with stable auxiliary rails.
Vacuum Pressure Impregnation cures coils securely, repelling shaft dust, oil mist, and humidity condensation.
Engineered for tight control panels in machine-room-less (MRL) and traditional traction elevator setups.
Engineered to eliminate voltage drops during lift acceleration and brake release cycles
Tailored for high-rise commercial traction elevators and gearless motor drives. Equipped with primary taps (380V / 400V / 415V / 440V / 480V) and step-down outputs (220V, 110V, 36V) for the main logic controller, safety interlocking chain, brake holding coils, and shaft signaling lights.
Designed specifically for Machine-Room-Less (MRL) passenger elevators installed adjacent to residential living quarters. The seamless continuous wound core eliminates air gaps, achieving acoustic noise ratings below 38 dB while saving 40% in enclosure volume and 30% in net chassis weight.
Compact, heavy-duty dry auto transformer sized for high duty-cycle automated cabin door motors, frequency inverter inputs, landing call stations, and emergency leveling power reserves.
Features touch-safe IP20 terminal barrier blocks, integral thermal cutoffs, and grounded electrostatic screening to defend lift computerized logic controllers from high-energy line spikes.
Direct drop-in replacements for obsolete lift transformers from major international OEM brands, featuring slotted universal mounting plates and labeled taps for rapid field installation.
How AI-driven predictive maintenance, smart urban transit, and green building certifications are reshaping elevator transformer specifications
International environmental directives such as EU Ecodesign and LEED green building certification compel lift contractors to minimize standby parasitic losses. High-grade cold-rolled grain-oriented (CRGO) silicon steel cores reduce excitation currents and no-load losses by up to 35% compared to commercial hot-rolled steels.
Modern high-speed elevators generate significant regenerative energy during counterweight-dominant descents. Elevator control auto transformers must maintain rock-solid terminal voltage regulation during sudden regenerative spikes to prevent sensitive micro-controllers and door logic processors from tripping safety fault codes.
High-rise hoistways create natural chimney effects, exposing control gear to ambient moisture, metallic brake dust, and industrial chemical residues. The transition toward high-dielectric epoxy encapsulation and multi-layer vacuum varnish coating guarantees long-term operational life exceeding 20 years without insulation breakdown.
Global supply chain volatility has made lead time predictability and custom engineering support the primary criteria for tier-one elevator contractors. Sourcing directly from verified manufacturers like Shaanxi Zelqo Power Co., Ltd. eliminates middleman delays and ensures custom batch traceability from raw copper wire to export crating.
Shaanxi Zelqo Power Co., Ltd. maintains dedicated production lines and rigorous bench testing for every elevator transformer
Headquartered in Xi'an, Shaanxi, China, Shaanxi Zelqo Power Co., Ltd. specializes in advanced magnetic component design and power conversion manufacturing. With over five years of specialized export track record and a 4.8/5.0 global buyer rating, our engineering team collaborates closely with lift system manufacturers, elevator control panel builders, and industrial automation integrators.
We operate a complete in-house manufacturing loop spanning high-speed CNC coil winding, circular toroidal winding, automated core slitting, multi-layer varnish insulation, and multi-stage testing benches. Every elevator auto transformer is tailored to your exact mechanical footprint, electrical ratings, terminal configurations, and safety compliance prerequisites.
Documented factory workflow from raw wire winding to semi-finished electrical calibration and aging
Technical clarity, engineering considerations, and order management insights
Whether you are developing next-generation high-speed passenger elevators, optimizing MRL panel space, or securing reliable OEM production for global modernization kits, Shaanxi Zelqo Power Co., Ltd. delivers customized autotransformers engineered to your exact operational parameters.