358kVA Three Phase Alternator STRO-350K

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Bradley: +27 62 743 5089 | bradley@sdecpower.co.za
Ruan: +27 66 511 2009 | ruan@sdecpower.co.za

We offer industry leading 24 month / 1,000 hour warranties on our engines and diesel generators.

The StromerPower 358kVA Three Phase Alternator (STRO-350K) is designed for large generator builds, commercial systems and industrial facilities. Assembled under strict ISO 9001 quality assurance, this 4 pole brushless unit gives engineers a dependable way to manage massive industrial starting loads without forcing sags across distribution lines.

  • Power output: Supplies a reliable 325kVA prime rating for continuous application and up to 358kVA standby power at a stable 50Hz frequency.
  • AS440 AVR control: Outfitted with a premium automatic voltage regulator that manages sudden drops in power to protect electronics.
  • Low reactance windings: Features high purity copper windings to minimise impedance, maintaining a clean electrical sine wave while improving fuel efficiency.
  • Rugged core housing: Built with a thick structural steel base, Class H insulation and an IP23 weather enclosure for dusty or high heat environments.

We offer delivery across Sub-Saharan Africa at the best prices.

SUPERIOR QUALITY AND PERFORMANCE

StromerPower sets new global standards in all aspects, from design, manufacturing, material selection, production and testing equipment, tooling, and quality control.

GENERAL SPECIFICATIONS

StomerPower 358kVA Alternator

The StromerPower STRO-350K is a high capacity 358kVA alternator engineered for heavy duty generator builds and large commercial and industrial applications. Manufactured under strict ISO 9001 quality assurance standards, this 4 pole brushless unit provides generator builders and engineers a rugged option that maintains network integrity during grid failures. It operates smoothly at 1500rpm to supply stable electricity across manufacturing plants, retail centres or commercial properties.

StromerPower 358kVA (STRO-350K) Alternator Features

  • Power rating: Handles a 325kVA prime power load and scales up to 358kVA standby output for backup operations (50Hz at 0.8 power factor).
  • AS440 voltage control: The factory installed automatic voltage regulator steadies outbound currents and protects electronics from voltage sags.
  • Thermal economy: Premium insulated copper windings lower internal resistance which limits heat buildup and improves engine fuel efficiency during long operations.
  • Vibration and alignment: Built with a dynamically balanced rotor to keep resonance low and protect bearing life.
  • Chassis and insulation: Built with an IP23 weather protective shell with Class H insulation.
  • Junction box layout: The terminal box gives maintenance electricians clear access for quick input wiring, phase configuration changes and regular servicing.

PRODUCT SPECIFICATIONS

Weight 835 kg
Dimensions 110 × 77 × 107 cm
Brand

StromerPower

Product Type

Alternator

Phase

Three Phase

Alternator Prime Power

325kVA

Alternator Standby Power

358kVA

Rated Frequency

50Hz

Voltage

400V

Voltage Regulation

+/- 1%

Voltage Regulation Change (% UN)

+/- 1%

Phase Change Rate (%)

+/- 1%

Power Factor

0.8

Insulation Class

H

Alternator Type

IM B35

Connection and Pole

4 Pole, Series Star

AVR Model

AS440

Stator

2/3 Pitch

Rotor

Single Bearing

Flywheel Housing (SAE)

#1 / 14"

Category:
A partner in power generation

World-Class Manufacturing, Fast Regional Distribution

We source and manufacture high-quality generators, engines, and parts directly from leading global factories, including SDEC. By dealing with us directly, you cut out the middlemen, saving you time and money.

Every engine, alternator, and spare part we supply is built to international standards and fully tested to handle South African conditions. Whether you are a local generator builder looking for loose components or a business needing a complete commercial power setup, we ensure fast delivery, guaranteed stock availability, and dependable performance.

SDEC FACTORY | ROBOTIC ENGINE MANUFACTURING ASSEMBLY LINE

Our Delivery Channels

Sub-Saharan Logistics

We ship SDEC engines, diesel generators, alternators and parts throughout South Africa and across the continent, including Namibia, Botswana, Malawi, Mozambique, Zambia, Zimbabwe, Swaziland, and Lesotho.

Our team handles the entire logistics process, from factory  loading to cross-border transport, ensuring your equipment arrives safely and on time.

We hold a large volume of stock and genuine replacement parts at our warehouses so we can supply clients across Africa quickly and efficiently.

FREQUENTLY ASKED QUESTIONS

Does the price include installation?

No, installation is not included in the price. Any qualified electrician can install the kit and provide a Certificate of Compliance (COC) for the installation as per legislation.

Do you offer installation?

No, we do not offer any installation services, but, any qualified electrician can install our products.

Does the price include delivery?

Delivery is not included in any of the prices. However, delivery will be calculated in your cart at checkout based on your location and product selection.

Tell me about the Warranty

Our product warranty is detailed on each product page and as per our standard terms along with a valid COC. It is a limited warranty.

Price validity

All pricing is valid while stocks last as reflected on your quotation, as specified therein.Â