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Oil-immersed 3 Phase Variac Transformer | TSJA Series Industrial Adjustable Voltage Regulator
Product Overview
Our TSJA Series Oil-immersed 3 Phase Variac Transformer, developed and manufactured by Shanghai Lepus Electrical Equipment Co., Ltd., is a heavy-duty, energy-saving industrial AC voltage regulation solution engineered for continuous, high-power voltage adjustment in rigorous industrial scenarios. This oil-cooled contact-type variac transformer features ONAN natural oil cooling for superior heat dissipation, full-capacity operation, zero additional waveform distortion, and exceptional instantaneous overload tolerance, adapting seamlessly to resistive, inductive, and capacitive loads. It is the trusted choice for electrical engineers, factory operators and industrial clients worldwide, widely deployed in motor testing, voltage test benches, CNC machine tools, photovoltaic systems, EV charging stations, laser cutting equipment, and power transmission systems.
Key Features & Competitive Advantages
Purpose-built for global heavy-duty industrial applications, this oil-immersed 3 phase variac transformer delivers industry-leading performance:
Superior Thermal Performance: Premium 25# transformer oil enables fast heat dissipation, low temperature rise, and excellent insulation for long-term continuous operation.
High Precision & Stable Output: ±1% output accuracy with zero waveform distortion, ensuring reliable voltage control for sensitive motor testing and precision industrial equipment.
Premium Industrial Build: Oxygen-free copper windings for high conductivity and low loss, new low-noise high-flux iron core, and high-strength steel enclosure for maximum durability and voltage stability.
Wide Adjustable Voltage Range: Standard 3 phase 380V input with 0-700V fully adjustable output, customizable to match global industrial power standards.
Safe & Reliable Design: High-insulation reinforced terminals, Class F insulation, and robust construction guarantee safe operation in harsh industrial environments.
Why Choose SHLEPUSI
As an ISO9001, CE and UL certified professional industrial variac transformer manufacturer, we serve clients across 60+ countries and regions in Central Asia, East Asia, South Asia, Africa, Europe, North and South America. We provide full OEM/ODM customization, including tailored rated capacity (50-2000KVA), voltage parameters, brand logo printing, and custom packaging to fit your unique requirements. Every unit undergoes strict multi-stage quality inspection and pre-shipment testing to ensure zero defects, backed by a 2-year warranty. We offer flexible global shipping with full Incoterms support, lifetime free technical guidance, and on-site engineer installation and debugging services, with a low minimum order quantity of 1 unit for all orders.
Technical Specifications
Core Parameter
Standard Specification
Product Name
Oil-immersed 3 Phase Variac Transformer
Standard Model
TSJA-1250KVA (Fully Customizable)
Brand
SHLEPUSI (OEM/ODM Supported)
Rated Capacity
1250KVA (Customizable 50-2000KVA)
Rated Input Voltage
3 Phase 380VAC (Customizable)
Rated Output Voltage
3 Phase 0-700VAC Adjustable (Customizable)
Working Frequency
50/60Hz
Output Precision
±1%
Insulation Class
F
Cooling Method
ONAN (Oil Natural Air Natural)
Display System
Digital Voltage Display
Operating Temperature
-15℃ to +45℃
Waveform Distortion
No Additional Waveform Distortion
Certifications
ISO9001, CE, UL
Warranty
2 Years
Frequently Asked Questions (FAQ)
Q1: What is your standard lead time for this oil-immersed variac transformer?
A: Standard in-stock orders ship within 3-7 working days. Customized or bulk orders take 10-30 days based on order specifications.
Q2: How do you ensure product quality?
A: We implement full-process quality inspection from raw material incoming to final assembly, with strict pre-shipment testing for every unit.
Q3: What are your accepted payment terms?
A: 30% deposit for standard products, minimum 50% advance payment for customized orders, with full balance settled before shipment.
Q4: Do you provide technical support for installation?
A: Yes. Our professional technical team offers full installation guidance, on-site engineer dispatch, and lifetime free telephone technical support.
Q5: What packaging do you use for international shipping?
A: Large industrial units use reinforced fumigated wooden cases for protection. Custom packaging is available upon request.
Q6: Do you accept OEM/ODM orders with our company logo?
A: Yes, we provide full OEM/ODM services, including custom logo printing on products and technical documents for eligible orders.
Q7: What are your main global markets?
A: We serve clients worldwide, covering Central Asia, East Asia, South Asia, Africa, Europe, North America and South America.
Q8: What is your monthly production capacity for oil-immersed variac transformers?
A: We produce up to 2,000 high-power industrial units monthly, supporting bulk orders of all sizes.
Q9: Can you customize rated capacity and voltage range?
A: Absolutely. We fully customize capacity from 50KVA to 2000KVA and voltage parameters to meet your specific industrial needs.
Q10: What is your minimum order quantity (MOQ)?
A: Our MOQ is 1 unit, accommodating both sample testing and large-scale bulk procurement needs.
