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SZ11 Series 35kV On-load Voltage Regulating Transformer

The SZ11 series 35kV on-load voltage regulating transformer offers a reliable and efficient solution for power distribution, featuring low losses, low noise, and high short-circuit resistance. It is designed for high performance in harsh environments and offers enhanced safety and versatility for a wide range of applications
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Overview

The SZ11 series 35kV on-load voltage regulating transformer is designed for efficient and reliable power distribution in medium to high-voltage applications. It features advanced insulation materials and construction technology, ensuring low noise, low losses, and high short-circuit resistance.


Key Features
  • Low Losses: No-load losses are significantly lower than national standards, contributing to energy savings

  • Low Noise: Noise levels are lower than traditional transformers, often below 60dB

  • High Reliability: Features a fully sealed design to prevent moisture ingress and oil leakage

  • Strong Short-Circuit Resistance: Successfully passes national-level short-circuit tests

  • Maintenance-Free Design: Sealing components have the same lifespan as the transformer, reducing maintenance needs


Technical Parameters
  • Rated Voltage: 35kV

  • Rated Capacity: Up to 20000kV

  • Connection Group: YNd11 or Yd11

  • Protection Level: IP2X


Applications

Ideal for power distribution in urban power grids, industrial plants, commercial buildings, and public infrastructure projects.


Key Benefits

  • Enhanced safety and reliability with minimal maintenance.
  • Compact and space-efficient design.
  • Suitable for harsh environments and high load conditions.
  • Long service life and reduced operational costs.


Rated capacity(kVA)
Voltage Combined Vector-group No-load loss(W) 75°C Load-loss(W) No-load current(%) Short-circuit impedance(%)
HV(kV) Tapping ranges LV(kV)
2000 35
±3*2.5%

6.3

10.5

Yd11 2300 19240 0.80 6.5
2500 2720 20640 0.80
3150

35

38.5

±3*2.5%

6.3

10.5

3230 24710 0.72 7.0
4000 3870 29160 0.72
5000 4640 34200 0.68
6300 5630 36770 0.68 7.5
8000

35

38.5

±3*2.5%

6.3

6.6

10.5

11

Ynd11
7870 40610 0.60
10000 9280 48050 0.60
12500
10940 56860 0.56 8.0
16000 13170 70320 0.54
20000 15570 82780 0.54


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 Telephone: +86-191-3128-9729
WhatsApp: +8619131289729
 Email: admin@bdzsdq.com
 Address: No. 6799, North Third Ring Road, Jingxiu District, Baoding City, Hebei Province
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