QDTB® Transformer

1to3-20KVA

1P-to-3P Series • 20kVA • 0.38/0.38 kV

Product Image & Parameters

1P-to-3P - QDTB

Images are for illustration purposes only

1to3-20KVA

1P-to-3P Series

Capacity
20kVA
Frequency
50/60Hz
Short-circuit impedance
4%
Cooling method
AN
Applied standard
GB/T 1094, IEC 60076
Dimensions
350×300×350 mm
Weight
90kg
Energy SavingLow Loss

TECHNICAL DRAWING

Model: 1to3-20KVA | Type: Oil-immersed transformer | Capacity: 20 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.120mm150mm

ELECTRICAL SCHEMATIC

HV WINDING (Delta)1U1V1WLV WINDING (Star)2U2V2W2NDyn11

EFFICIENCY vs LOAD

90%95%98%99%0%25%50%75%100%≈99%load %efficiency %

SIDE VIEW

Oil level90mm

TOP VIEW

1U1V1W2U2V2W2N90mm

TERMINAL BLOCK

HV TERMINAL BLOCK1U1V1W1N1PELV TERMINAL BLOCK2U2V2W2N2PE2122Terminal block configurationTin-plated copper busbar

CORE & WINDING

OIL / TANKHV winding/bushingINSULATIONLV winding/bushingIron coreconcentric cross-section

Technical specifications

1. Model:1to3-20KVA
2. Type:Oil-immersed transformer
3. Capacity:20 kVA
4. Frequency:50 Hz
5. HV voltage:0.38 kV
6. LV voltage:0.38 kV
7. HV current:-
8. LV current:-
9. Vector group:Dyn11
10. Impedance:4%
11. Insulation level:A
12. Temperature rise:65K
13. No-load loss:-
14. Load loss:-
15. No-load current:-
16. Cooling method:AN
17. Tap changer:±2×2.5%
18. Standard:GB/T 1094, IEC 60076
19. Dimensions:350×300×350 mm
20. Weight:90kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

1to3-20KVA series 1P-to-3P Phase-converting transformer. 20kVA 0.38kV/0.38kV. Class F insulation, dry-type design. Genuine QDTB product, ISO 9001 certified, global export.

Instant Selection & Quote Calculator

Select your specifications to get an estimated price instantly.

1 · Configure
2 · Your price
EXW (FOB Qingdao)
$10
Range $10 ~ $11 (±8%)
Price Breakdown
Base price (interpolation)$10
× Product factor×1.0000
× Country factor×1.0000
× Copper-linked factor×1.0000
+ Options / accessories$0
Shipping quoted separately per destination port.

Aluminum winding — no copper linkage

Reference prices are for estimation only and do not constitute a formal offer.

3 · Get this quote

We will reply with your latest quote instantly.

1to3-20KVA - Frequently Asked Questions

QWhat are the main applications of 1to3-20KVA?

1to3-20KVA (1P-to-3P series, Special/Isolation/Control Transformers) is widely used in industrial power distribution, commercial buildings and utility power systems. Can be flexibly configured according to actual project requirements.

QWhat are the main technical specifications of 1to3-20KVA?

Key specifications: Capacity: 20kVA, HV 0.38 kV, LV 0.38 kV, Frequency 50/60 Hz, Impedance 4%, Cooling AN, Standard GB/T 1094, IEC 60076.

QCan 1to3-20KVA be custom ordered?

Yes. QDTB® provides comprehensive OEM/ODM customization services. Parameters such as capacity, voltage ratio, cooling method, connection group and protection class can all be adjusted. Over 25 years of manufacturing experience ensures consistent quality.

QHow to get a quote and technical documentation?

Contact via the "Send Inquiry" button below, or contact sales at Alice@qdtb-transformer.com / +86 13698683193. We provide detailed quotations and technical documentation instantly.

Related Products in 1P-to-3P Series

1to3-7.5KVA
Rated Capacity: 7.5kVA
Voltage: 0.38/0.38 kV
1to3-30KVA
Rated Capacity: 30kVA
Voltage: 0.38/0.38 kV
1to3-15KVA
Rated Capacity: 15kVA
Voltage: 0.38/0.38 kV
1to3-5KVA
Rated Capacity: 5kVA
Voltage: 0.38/0.38 kV
1to3-10KVA
Rated Capacity: 10kVA
Voltage: 0.38/0.38 kV
1to3-3KVA
Rated Capacity: 3kVA
Voltage: 0.38/0.38 kV

Interested in 1to3-20KVA?

Contact us for pricing, technical support, or custom requirements.

Send InquiryView All 1P-to-3P Models