35kV On-load Dry-type Transformer

35kV On-load Dry-type Transformer

Technical Highlights: The 35kV on-load tap-changing dry-type transformer features an advanced design with exceptional insulation performance. Utilizing vacuum drying technology for both the core and windings, combined with complete vacuum oil-impregnation during assembly, this product achieves superior insulation levels that represent a significant technological advancement.
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The 35kV on-load tap-changing dry-type transformer features an advanced design with exceptional insulation performance. Utilizing vacuum drying technology for both the core and windings, combined with complete vacuum oil-impregnation during assembly, this product achieves superior insulation levels that represent a significant technological advancement.

 

Key Features

 

1.Exceptional Short-Circuit Resistance

  • Special structural design overcomes the limitations of amorphous alloy cores in withstanding pressure
  • Proprietary fixation methods for core and windings
  • Validated through six consecutive short-circuit tests per winding (exceeding industry standards)

2.Advanced Insulation System

  • Vacuum pressure impregnation (VPI) technology
  • Class F/H insulation (155°C/180°C thermal rating)
  • Partial discharge <10pC

 

Specifications

 

  • Type: Indoor installation, air natural cooling (AN)
  • Frequency: 50Hz/60Hz dual-rated
  • Primary voltage: 35kV with on-load tap changer
  • Secondary voltage: ≤1000V (customizable)

 

Applications


✓ Machine tools and industrial equipment
✓ Control circuit power supply
✓ Local lighting systems
✓ Small power distribution

 

Standards Compliance

 

  • IEC 60076-11
  • GB/T 10228
  • Custom solutions available

Note: All technical parameters subject to final engineering confirmation. Special configurations available for unique requirements.

 

35kV On-Load Tap-Changing Dry-Type Transformer Technical Specifications

 

1.Performance Parameters

  • Stable operation with noise level <40dB
  • Insulation class: Class B
  • Relative humidity: ≤80%
  • High efficiency: 98%
  • Withstand voltage: 2500V
  • Ambient temperature range: 0℃-40℃
  • Temperature rise: ≤75℃
  • Operating environment: Free of corrosive gases and dust

2.Product Features
(1) Energy Efficient & Low Noise:

  • Constructed with premium cold-rolled silicon steel laminations
  • High-temperature resistant insulation materials
  • Ventilated coil design for improved heat dissipation
  • Special resin impregnation reduces vibration and noise

(2) High Reliability:

  • Optimized structural design maintains waveform integrity
  • Capable of continuous long-term operation
  • Fully complies with dry-type transformer standards

(3) Eco-Friendly Characteristics:

  • Excellent thermal, moisture and chemical resistance
  • Superior low-temperature performance
  • Radiation-resistant and non-toxic materials

3.Application Scenarios
Ideal for demanding environments requiring:

  • High fire safety standards
  • Significant load fluctuations
  • Contaminated or humid conditions

Typical installations include:

  • Airports
  • Metro systems
  • Power plants
  • Hospitals
  • High-rise buildings
  • Shopping centers
  • Dense residential areas
  • Petrochemical facilities
  • Nuclear power applications

4.Power Supply Requirements

  • Voltage waveform should approximate sine wave
  • Polyphase power supply voltages must maintain symmetry

Note: This transformer represents an optimal power distribution solution for critical applications where safety, reliability and environmental adaptability are paramount. All specifications meet international standards for dry-type transformers.

 

Technical Specifications of 35kV On-Load Tap-Changing Dry-Type Transformer

 

Rated capacity

(KVA)

Voltage combination

(kV)

Conn- ecting

way

Dissipation(W)

No-Load

current(%)

Impedance Voltage

(%)

High-Voltage

(kV)

Low-Voltage

(kV)

No-load

Load (120°C)

2000

35

36.5
37

38.5

±4×2.5

6

6.3

10

10.5

11

Dyn11

Yd11

4500

19000

0.75

7.0

2500

5220

22600

0.75

3150

6300

25400

0.70

8.0

4000

7380

30400

0.70

5000

8730

36100

0.60

6300

10300

41800

0.60

8000

11800

47500

0.50

9.0

10000

13600

57100

0.50

12500

16400

66500

0.40

16000

20200

78200

0.40

20000

23800

88000

0.35

10.0

25000

28100

104000

0.35

 

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