QDTB® Transformer

BKC-0.5/0.48/0.208

BKC Series • 0.5kVA • 0.48/0.208 kV

BKC-0.5/0.48/0.208 is a 0.5 kVA, 0.48/0.208 kV special/isolation/control transformer manufactured by Shandong Yaqing Electric Power Technology Co., Ltd. (QDTB) in Qingdao, China, designed and tested in accordance with IEEE C57 / ANSI C84.1, vector group Delta-Wye (IEEE Std), short-circuit impedance 4%, approximate weight 5 kg. Available on FOB Qingdao terms; datasheet, routine test report and GA drawing issued with each unit.

Technical Specifications

BKC-0.5/0.48/0.208 technical specifications
ModelBKC-0.5/0.48/0.208
Rated Capacity0.5kVA
HV Voltage0.48 kV
LV Voltage0.208 kV
Frequency60 Hz
Vector GroupDelta-Wye (IEEE Std)
Short-circuit Impedance4%
CoolingAN
InsulationH (180°C)
Temperature Rise65 K
No-load Loss88 W
Load Loss220 W
EfficiencyNational/industry standard
Weight5 kg
Dimensions120×110×130 mm
Applied StandardIEEE C57 / ANSI C84.1

Product Image & Parameters

BKC - QDTB

Images are for illustration purposes only

BKC-0.5/0.48/0.208

BKC Series

Capacity
0.5kVA
HV Voltage
0.48kV
LV Voltage
0.208kV
Frequency
60Hz
Short-circuit impedance
4%
Cooling method
AN
Efficiency
National/industry standard
Applied standard
IEEE C57 / ANSI C84.1
Connection
Delta-Wye (IEEE Std)
Energy SavingLow Loss

TECHNICAL DRAWING

Model: BKC-0.5/0.48/0.208 | Type: Oil-immersed transformer | Capacity: 0.5 kVA

FRONT ELEVATION

Oil level1U1V1W2U2V2W2NTAPN.P.120mm150mm

ELECTRICAL SCHEMATIC

HV WINDING (Delta)1U1V1WLV WINDING (Star)2U2V2W2NDelta-Wye (IEEE Std)

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:BKC-0.5/0.48/0.208
2. Type:Oil-immersed transformer
3. Capacity:0.5 kVA
4. Frequency:60 Hz
5. HV voltage:0.48 kV
6. LV voltage:0.208 kV
7. HV current:0.6A
8. LV current:1.39A
9. Vector group:Delta-Wye (IEEE Std)
10. Impedance:4%
11. Insulation level:H (180°C)
12. Temperature rise:65K
13. No-load loss:88W
14. Load loss:220W
15. No-load current:7.1%
16. Cooling method:AN
17. Tap changer:±5% Single-tap
18. Standard:IEEE C57 / ANSI C84.1
19. Dimensions:120×110×130 mm
20. Weight:5kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

0.50kVA, 3-phase isolation, dry-type transformer, 60Hz, primary 480V (HV 480V), secondary 208V (LV 208V), Standard, insulation H, impedance 4%

Related Keywords

BKC-0.5/0.48/0.208 isolation control transformer0.5kVA control transformerprimary 0.48kV secondary 0.208kVBKC mining flameproof control transformer for coal mine

Instant Selection & Quote Calculator

Select your specifications to get an estimated price instantly.

1 · Configure
More options(2)
Certification
2 · Your price
Derived Ratings (calculated from the configuration)

The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.

Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ

Inputs taken from the configuration
Capacity: — kVAfrom the configuration above
System voltage: not specified
Impedance voltage uₖ: not specified
Result
Rated current Iₙ—
Short-circuit current I_sc—
Short-circuit current I_sc—
Short-circuit power S_sc—
I_sc is calculated on the transformer impedance basis alone (system impedance neglected) — the same basis used in IEC 60076-5 short-circuit calculations.

Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.

Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.

Derived losses (from the selected efficiency grade + capacity)
No-load loss P0 (kW)—
Load loss Pk (kW)—

Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.

特种/隔离/控制变压器(产品库逐型号 noLoadLoss,无独立能效档维度)

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.

BKC-0.5/0.48/0.208 - Frequently Asked Questions

QWhat are the main applications of BKC-0.5/0.48/0.208?

BKC-0.5/0.48/0.208 (BKC 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 BKC-0.5/0.48/0.208?

Key specifications: Capacity: 0.5kVA, HV 0.48 kV, LV 0.208 kV, Frequency 60 Hz, Impedance 4%, Connection Delta-Wye (IEEE Std), Cooling AN, Standard IEEE C57 / ANSI C84.1.

QCan BKC-0.5/0.48/0.208 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.

Interested in BKC-0.5/0.48/0.208?

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