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Medium/High Voltage Generator Sets

Medium/High Voltage Generator Sets
  • Medium/High Voltage Generator Sets
  • Medium/High Voltage Generator Sets
  • Medium/High Voltage Generator Sets
  • Medium/High Voltage Generator Sets

Medium/high voltage generator sets are designed to meet the increasing power demands of modern infrastructure and industrial operations, where conventional low-voltage diesel gensets often fall short. In facilities such as data centers, high-rise buildings, polysilicon production plants, and mining sites, power requirements can be exceptionally high. Traditional 400V AC diesel generator sets face limitations including large cable diameters, higher line losses, complex installation, and elevated costs, making them unsuitable for many applications. In such cases, medium and high voltage AC generator sets offer a more efficient and practical solution.

Medium voltage generator sets
  • Apparent power: 1000 kVA-3000 kVA
  • Voltage: 3.3-13.8kV
High voltage generator sets
  • Apparent power: 2000 kVA-12000 kVA
  • Voltage:≥35kV (with step-up transformer)

These voltage generator sets enable more efficient power transmission over long distances, reduce installation costs, and improve overall system performance, making them an ideal choice for demanding large-scale applications, such as factories, where equipment is likely to be spread out.

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Applications

Medium/high voltage generator sets are widely used across industries and critical infrastructure where large-scale, reliable power is essential:

  • Serve as primary or backup power sources for large factories, mining operations, and oilfields
  • Support national and regional power grids for peak shaving, emergency supply, and distributed energy systems, ensuring grid stability
  • Provide high-reliability power for large data centers
  • Supply main and emergency power for large commercial vessels, engineering ships, and offshore drilling platforms
  • Deliver backup power to key facilities such as airports, hospitals, and rail transit systems
Features
  • Extended service life: Compared with high-voltage systems, low-voltage generators carry 26 times more current, resulting in greater heat load and energy loss. High current also increases wear on output breakers, reducing equipment lifespan. Medium/high voltage systems mitigate these issues, helping to delay aging and extend service life.
  • Lower risk of asynchronous short circuits: When multiple low-voltage generators operate separately without synchronization, differences in supply systems can lead to asynchronous short circuits. Medium/high voltage generator sets significantly reduce this risk through better system stability and synchronization.
  • Enhanced safety: Low-voltage generator breakers face higher arc intensity due to excessive current, increasing the likelihood of arc damage. Medium/high voltage units operate at lower currents for the same power output, reducing arc formation and improving operational safety.
Technical specifications
Rated apparent power 1000-3000 kVA (Medium Voltage:3.3–13.8kV)
2000-12000 kVA (High Voltage: ≥35kV, with step-up transformer)
Voltage range Medium voltage: 3.3kV / 6kV / 6.6kV / 10.5kV / 11kV / 13.8kV
High voltage: ≥35kV (generator + boost transformer system)
Frequency 50Hz / 60Hz
Rated speed 1500 rpm (50Hz) / 1800 rpm (60Hz)
Electrical system 3-phase, 4-wire
Rated power factor 0.8 (lagging)
Engine providers (optional) Cummins / Perkins / MTU / Mitsubishi
Alternator providers Stamford / Leroy-Somer
Alternator type Brushless synchronous alternator, with AVR
Insulation class Class H
Winding treatment Tropicalized
Ingress protection IP23 (IP44 optional)
Cooling method Water-cooled with radiator
Duty rating Standby / prime / continuous
Applicable standard ISO 8528
Starting system 24V electric start
Control module Deepsea / Smartgen
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Trusted OEM Manufacturer of Diesel Generator Sets
  • Contact: Ms. Ling
  • E-mail: ling@jiuangenerator.com
  • WhatsApp: +86-13802423948
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