What’s ST/STC Series?

STC/ST Series is called a Single/Three-phase harmonic A.C.Sychronous generator (AC generator), mainly designed to serve as a power generating unit for lighting purposes in villages, towns, and house-hold electric appliances or standby power.
Three-phase AC Generators

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Many names on the market for STC or S.T. series generators confuse us. Like an alternator, dynamo, generator, etc. What exactly is it called?

STC/ST Series is a Single/Three-phase harmonic A.C. synchronous generator. Call an A.C. generator. Designed to serve as a power generating unit for lighting purposes. In villages, towns, and house-hold electric appliances or standby power.

The construction of it is a salient-pole rotating field, self-excitation with third-harmonic. The interior make of high-quality magnetic and electrical materials. and it’s easy to maintain. Pls click here for our products on the website.


All the items based on a TFS series generator. With excellent electrical, reliable mechanical, strong and durable, and easy maintenance.

  1. Insulation is class B or F; the drip-proof type is IP21 or IP23.
  2. Tight construction with casting frame,and could be steel or cast iron for optional.
  3. Speed & Fre, 50Hz/ 1500rpm or 60Hz/ 1800rpm.
  4. The steady voltage regulation of generators is good at 5% speed: variation, load from no-load to full-load, and power factor from 0.8 to 1.0.
  5. The standard is, according to JB/T8981-21 and ISO 9001, in conformity to IEC34-1.


S.T. calls A.C. Single Phase with 127V, 220V, 230V. Which use in home-hold, town, Countryside, village, etc. as electric power for lighting.

STC calls A.C. Three Phase with 380V, 400V, 440V. Which use in factories, industrial, Mine, Hospital, etc. as emergence.

Mechanical Specification

There are Hundreds of Materials for ac generators in the market. Which can customize for their needs. Our manufacturers in regular as below:

  1. Steel frame or Cast Iran shell for cover.
  2. 180℃ high-resistant copper wire.
  3. Excell silicon steel chip
  4. Import ball bearings
  5. Single bearing with standard SAE connection and SAE driving chip.
  6. Double bearings with standard shaft extension and flange connection cover.

Most of the time, ac generators drive-by diesel engines or water turbines, and the choice of ac generators depends on the purpose and working conditions of the power. The most by BoliPower is alternator due to its recognized quality, innovation, and reliability. With a wide power range, they are prepared for all configurations and various SAE adapters, which facilitate the docking with a wide number of engines.

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Hey all, I'm Baymax Yan, working at a generator manufacturer and Having more than 15 years of experience in this field, and I belives that “learn and lives.” The sure thing is that I can often help my work. So I have created the blog to share all my knowledge with you. Hope my sharing helps!

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