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33MVA138kV transformer for electrical transmission

  • 33MVA138kV transformer for electrical transmission

Key attributes

Brand ROCKWILL
Model NO. 33MVA138kV transformer for electrical transmission
Rated frequency 50/60Hz
Series S (F)

Product descriptions from the supplier

Description

Description of 110kV Transmission Transformer

A 110kV Transmission Transformer is a medium-to-high voltage power transformer designed for regional electricity transmission and distribution networks. It serves as a critical link between high-voltage transmission grids (e.g., 220kV/500kV) and local distribution systems, stepping down voltage from 110kV to lower levels (typically 10kV/35kV) for industrial, commercial, and residential use. Widely deployed in substations, industrial parks, and urban/rural areas, it ensures stable power supply, reduces transmission losses over medium distances, and supports reliable grid operation.

  • 3-ph, 33MVA138kV Transformer 

Features of 110kV Transmission Transformer

  • Optimal Voltage Level: Balances transmission efficiency and infrastructure cost, making it ideal for medium-distance power delivery (up to 100km) while minimizing voltage drop and energy loss.

  • High Efficiency & Low Loss: Adopts advanced materials (e.g., amorphous alloy cores, low-resistance copper windings) to reduce no-load and load losses, meeting or exceeding international standards (e.g., IE3 efficiency class).

  • Robust Construction: Designed to withstand environmental stresses (e.g., temperature variations, humidity, pollution) with sealed tanks, corrosion-resistant coatings, and moisture-proof insulation systems.

  • Flexible Configuration: Available in various types (e.g., oil-immersed, dry-type), with options for on-load or off-circuit tap changers to regulate output voltage under fluctuating loads.

  • Safety & Reliability: Equipped with protective devices (e.g., overcurrent/overvoltage relays, temperature sensors) and fail-safe mechanisms to prevent malfunctions and ensure continuous operation.

  • Compact Design: Space-efficient footprint for easy installation in urban substations or confined spaces, often featuring noise-reducing enclosures to meet environmental regulations.

  • Smart Grid Compatibility: Integrated with IoT sensors for real-time monitoring of temperature, oil quality, and partial discharges, enabling predictive maintenance and remote diagnostics.

3-ph, 160MVA138kV Transformer

80MVA132kV Transformer

 

FAQ
Q: What are the main classification dimensions of power transformers in international and domestic standards, and what are the specific types?
A:
The core classification dimensions of power transformers include insulation and cooling methods, voltage functions, and core structures. The specific types under each dimension are as follows:
  • By insulation and cooling method: Divided into liquid-insulated (oil-immersed) and dry-type. Oil-immersed transformers are the mainstream type for power transmission, suitable for voltages up to 345kV and above, with standardized cooling methods such as ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), and OFAF (Oil Forced Air Forced). Dry-type transformers are mainly used for indoor or specific industrial applications, typically for lower voltages (up to 35kV), although some special types are available for higher voltages.
  • By voltage function: Including step-up, step-down, and autotransformers. Step-up transformers are used in power plants to increase generator voltage to transmission voltage (e.g., 13.8kV to 345kV). Step-down transformers are used in substations to reduce transmission voltage for sub-transmission or distribution (e.g., 345kV to 132kV or 34.5kV). Autotransformers are used to connect systems with fixed voltage ratios, offering efficiency advantages in transmission grids (e.g., 400kV/220kV applications).
  • By core structure: Divided into core type and shell type. Core-type transformers have windings surrounding the core limbs (common in EHV applications). Shell-type transformers have the core surrounding the windings.
Know your supplier
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On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Electric transformer
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

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