QDTB® Transformer

300

JMB Series • 300VA • 380 → 127

Product Image & Parameters

JMB - QDTB

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300

JMB Series

Capacity
300VA
Input voltage
380
Output voltage
127
Frequency
50/60Hz
Efficiency
≥90%
Dimensions
180x170x155
Weight
130kg
Control TypeLow NoiseISO 9001

TECHNICAL DRAWING

Model: 300 | Type: Oil-immersed transformer | Capacity: 300 kVA

FRONT ELEVATION

Oil level1U1V2U2NTAPN.P.180mm240mm

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 level135mm

TOP VIEW

1U1V2U2N135mm

TERMINAL BLOCK

HV TERMINAL BLOCK1U1V1W1NLV TERMINAL BLOCK2U2V2W2N2PETerminal block configurationTin-plated copper busbar

CORE & WINDING

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

Technical specifications

1. Model:300
2. Type:Oil-immersed transformer
3. Capacity:300 kVA
4. Frequency:50 Hz
5. HV voltage:10 kV
6. LV voltage:0.4 kV
7. HV current:-
8. LV current:-
9. Vector group:Dyn11
10. Impedance:-
11. Insulation level:A
12. Temperature rise:65K
13. No-load loss:-
14. Load loss:-
15. No-load current:-
16. Cooling method:ONAN
17. Tap changer:±2×2.5%
18. Standard:GB1094
19. Dimensions:180x170x155
20. Weight:130kg
LEGEND:
Iron core
HV winding/bushing
LV winding/bushing
Dimension line

Product Description

300 JMB Series Single Phase Transformer, rated 300.0VA, input 380, output 127, size 180x170x155mm

Related Keywords

300 jmb single phase transformer300.0VA single phase transformer380 to 127JMB series industrial equipmenthigh quality reliable factory direct supply

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300 - Frequently Asked Questions

QWhat are the main applications of 300?

300 (JMB series, Single Phase 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 300?

Key specifications: Capacity: 300VA, Input 380, Output 127, Frequency 50/60 Hz.

QCan 300 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.

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