Three Phase Variable Transformerv

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Three Phase Variable Transformer Of KESUN Electrical Equipment 2
Three-Phase Motor-Driven Toroidal Voltage Regulator, 0-430V AC Variac
Three Phase Variable Transformer Of KESUN Electrical Equipment 7
0-430V Adjustable 3 Phase Variable AC Voltage Transformer

Key Features & Benefits

Unlike traditional fixed transformers, this variable AC transformer allows you to dial in the exact voltage you need—making it the perfect tool for voltage testing,

✔ Wide Adjustable Voltage Range (0–430V)

Enables flexible voltage output for different testing and industrial applications. Perfect for:

  • Motor and pump testing

  • Electrical product R&D

  • Quality inspection and performance evaluation

  • Lab experiments requiring precise AC voltage

  • Production line test benches

ItemSpecification
Output voltageSingle-phase: 220V±10%
Three-phase: line voltage 380V±10%
Input voltageSingle-phase: 0-250V
Three-phase: line voltage 0-430V
Efficiency>95%
Waveform distortionNo additional waveform distortion
Temperature rise<60℃
Dielectric strength1500V/min
Insulation resistanceSingle-phase >5MΩ Three-phase >2MΩ
Frequency(Hz)50/60

Installation requirements:

Suitable for indoor installation; the installation environment should be free of harmful gases, steam, chemical deposits, dust, dirt, and other harmful substances. The environment should contain no explosive or corrosive media that could seriously affect the voltage regulator’s insulation. At the same time, the installation site should avoid severe vibration and collision.

Quality Control

  • Every voltage stabilizer undergoes a 100% routine inspection before shipment:
    Visual & mechanical check → Safety tests (insulation, dielectric strength, earth continuity) → Regulation performance test at no-load / half-load / full-load → Protection function verification (OV/UV/overload/short-circuit/over-temperature) → Full-load aging test → Noise & display check → Final inspection, record filing & packaging.
  • Max voltage regulation accuracy: ±1%, THD ≤3%, full-load efficiency ≥95%.
  • Our products meet IEC standards with CE & RoHS certifications.

Packing & Shipment

  • Voltage stabilizers are packed in shockproof, moisture-proof, and rust-proof export packaging. Small units use reinforced cartons; large industrial models adopt IPPC heat-treated wooden crates or pallets. Machines include corner buffers, insulated terminals, and desiccants to prevent condensation and corrosion. Outer boxes are marked with Fragile, This Side Up, Keep Dry and clear shipping marks.
  • Air Freight: Complies with IATA rules. Terminals are insulated, and loose metal parts are secured.
  • Sea Freight: Enhanced protection against salt spray. Solid wood packaging must carry valid IPPC marks to avoid quarantine detention.

Experienced Staffs

200+ skilled workers & engineers, daily output over 1,000 units.

100% Full Ispection

All voltage stabilizers are fully tested prior to shipment, and full QC reports are provided.

Global Certifications

QC reports & Certificate of Origin available. UKCA, EAC, SABER, SONCAP and other regional certificates can be supplied.

One-Stop Service

From production to shipment, we offer a one-stop service.

Contact Us

We’d love to hear from you! Please send us a message using the form now. We will contact you within one working day. Please watch for emails from addresses ending in “@kesunme.com.”

Send Your Inquiry Today

Our senior sales engineer Mark will reply to your email within 24 hours. 

Please note the email with “@kesunme.com”.