• KY220VT18VAC step-down power transformer shown in a clear perspective studio view on a white background, highlighting the compact laminated EI silicon steel core with yellow insulating tape, stamped metal chassis mounting ears, pre-crimped blue and brown primary AC input leads with spade fork terminals, and yellow secondary output leads terminated with a 2-pin quick-disconnect plug for commercial electrostatic precipitator ESP modules and HVAC air purification equipment.
  • Side horizontal profile of the KY220VT18VAC AC-to-AC step-down transformer on a white background, displaying the vacuum-varnished EI magnetic core laminations, dual chassis screw mounting tabs, and neatly bundled primary blue and brown 220V wires alongside secondary yellow 18VAC power output cables engineered for continuous low-voltage conversion in commercial air cleaners.
  • Engineering dimension drawing and physical view of the KY220VT18VAC step-down transformer detailing overall package measurements of 50mm length, 40mm width, and 25mm height with red metric callout arrows, showing the compact 400g chassis footprint and pre-wired harness configuration designed for tight enclosure integration in OEM air purifiers and HVAC fan coil units.
  • System installation schematic demonstrating the KY220VT18VAC transformer connected inline with a KINYO high-voltage power supply box and an electrostatic precipitator ESP collector cell with red indicator callouts labeling the ESP Unit, Transformer, and KINYO High Voltage Power Supply, illustrating the multi-stage electrical conversion architecture inside commercial ventilation air filters.
  • Angled close-up view focusing on the technical identification label of the KY220VT18VAC transformer, verifying the 220VAC input specification via blue-brown lead wires, 18VAC 600mA output via yellow-yellow lead wires, and pure copper wound bobbin structure intended for high-reliability industrial power distribution.
  • Top-down perspective studio shot of the KY220VT18VAC power transformer, showcasing the slotted base mounting bracket flanges, insulated yellow bobbin winding, coiled primary AC mains power cables, and low-voltage secondary wiring assembly for secure mechanical and electrical integration in HVAC ducts.
  • Front-facing view of the KY220VT18VAC step-down transformer on a white background, highlighting the pre-installed insulated terminal spade lugs on the primary input harness and the 2-pin female socket on the secondary 18VAC output harness, providing effortless plug-and-play maintenance for OEM air purification systems.
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Step-Down Transformer for ESP Systems / KY220VT18VAC / 220V-110V to 18VAC 600mA

Step-Down Transformer for ESP Systems / KY220VT18VAC / 220V-110V to 18VAC 600mA

$3.89 USD
$3.89 USD
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SPEC
AC Input Options 220V / 110V 50/60 Hz Mains
AC Secondary Output 18 VAC / 12 VAC 600 mA Rated Load
Core Dimensions 50 × 40 × 25 mm Compact EI Laminated Core
Unit Mass 400 g Chassis Bracket Mount

Commercial-Grade AC Step-Down Transformer for Electrostatic Precipitators & HVAC Integration

The KY220VT18VAC step-down power transformer is engineered specifically for commercial electrostatic precipitator (ESP) modules, HVAC fan coil units, and secondary control systems. Converting standard 220VAC or 110VAC line voltage down to a stable 18VAC (or 12VAC) secondary output at 600mA, it features high-permeability silicon steel EI laminations, pure copper windings, and vacuum-varnished insulation. Designed for continuous-duty operation, it provides robust dielectric isolation and over-voltage surge resistance to protect sensitive downstream high-voltage generator modules and microcontroller assemblies.

Performance & Verification (P&V)

Parameter Result / Accuracy Notes
Rated Primary Input Voltage 220 VAC / 110 VAC (50/60 Hz) Internal Laboratory Test
Secondary Output Voltage 18 VAC ±5% (Optional 12 VAC) Internal Laboratory Test
Rated Output Current 600 mA (0.6 A Continuous) Internal Laboratory Test
Dielectric Insulation Resistance Primary to Secondary Isolation > 100 MΩ (Pending Confirmation)
Full-Load Thermal Rise Class B Insulation (ΔT ≤ 65°C) (Pending Confirmation)
Continuous Operational Lifespan ≥ 30,000 Hours Continuous Duty (Pending Confirmation)
Safety & Environmental Compliance Designed to meet CE & RoHS Directives (Pending Confirmation)

Note: Performance results were obtained under controlled laboratory conditions. Actual performance may vary depending on test conditions, airflow, pollutant concentration and installation environment. Test reports are available upon request.

Engineering & Technical Highlights

01. High-Grade Silicon Steel EI Core

Precision-laminated annealed steel plates minimize eddy current losses, core heating, and electromagnetic interference, providing efficient continuous magnetic flux.

02. Pure Copper Windings & Insulation

High-temperature enameled copper wire delivers low internal impedance, high surge withstand capability, and consistent voltage regulation across varying electrical loads.

03. Pre-Terminated Wiring Harnesses

Factory-installed blue/brown AC input leads with crimped spade fork terminals and yellow secondary leads with a 2-pin quick-disconnect connector enable plug-and-play assembly.

04. Galvanized Chassis Flange Bracket

Sturdy stamped metal mounting ears with slotted screw holes allow rigid mechanical fastening inside metal HVAC duct boxes, electronic cabinets, and air purifiers.

Technical Data & Specifications

Model / Part Number KY220VT18VAC (Optional: KY110VT18VAC / KY220VT12VAC)
Product Category Linear Step-Down Power Transformer
Core Architecture EI Laminated Silicon Steel Core (Vacuum Varnished)
Rated Primary AC Input 220 VAC (or 110 VAC), 50/60 Hz
Rated Secondary AC Output 18 VAC (or 12 VAC)
Rated Secondary Current 600 mA (0.6 A)
Rated Apparent Power ≈ 10.8 VA (10W Nominal Capacity)
Primary Input Wiring Blue & Brown Lead Wires with Crimped Spade Fork Terminals
Secondary Output Wiring Yellow & Yellow Lead Wires with 2-Pin Quick Connector
Physical Dimensions 50 mm (L) × 40 mm (W) × 25 mm (H)
Net Unit Weight 400 g (0.4 kg)
Mounting Configuration Chassis Base Mounting (Dual Metal Mounting Flange Holes)
Primary Target Applications Electrostatic Precipitator (ESP) Air Purifiers, HVAC FCU Modules, Control Circuit Power
Compliance Standards Designed to meet CE and RoHS standards

Recommended Applications & Equipment Integration

Electrostatic Precipitator (ESP) Air Cleaners Commercial HVAC Return Air FCU Systems High-Voltage Power Supply Intermediate Feed Air Quality Sensor & Control Board AC Step-Down Industrial Ozone & Ionizer Auxiliary Power OEM / ODM Commercial Appliance Manufacturing

Custom OEM & ODM Transformer Manufacturing

With over 20 years of manufacturing experience in HVAC air purification electronics and power conversion, KINYO offers customized transformer engineering. Custom capabilities include tailored primary input voltages (100V, 110V, 120V, 220V, 240V, 277V), customized secondary AC outputs (6V, 9V, 12V, 18V, 24V), center-tapped secondary windings, specialized lead wire lengths, customized plug connectors, and custom mounting brackets to fit your mechanical enclosures.

Inquire About Custom OEM/ODM Solutions →
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20 Years of OEM/ODM Plasma ESP air purifier/Core parts/Intelligent control board products.

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