69kVA Three Phase Alternator STRO-70K

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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 69kVA Three Phase Alternator (STRO-70K) provides reliable power for generator builds, commercial setups, workshops and pump systems. Manufactured under a strict ISO 9001 quality system, this 4 pole brushless unit manages starting loads without dropping line voltage.

  • Power capacity: It supplies a continuous 63kVA prime power rating and pushes up to 69kVA standby output at a stable 50Hz frequency.
  • Responsive AVR control: The integrated voltage regulator monitors output to keep the line voltage within tight limits and protect equipment.
  • Low reactance windings: Uses premium copper windings to lower internal resistance which cuts down harmonic noise and lowers engine fuel consumption under load.
  • Industrial frame build: Features a thick steel base, Class H thermal insulation and an IP23 weather enclosure to protect vital components from high ambient heat and dust.

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 69kVA Alternator

The StromerPower STRO-70K is a 69kVA three phase alternator engineered for diesel generator builds, commerical applications and industrial equipment. Manufactured under strict ISO 9001 quality assurance, this 4 pole self excited unit gives engineers a dependable way to support busy workshops, commercial complexes or regional agricultural properties. Operating at a steady 1500rpm, the unit manages typical motor starting loads effectively.

StromerPower 69kVA (STRO-70K) Alternator Features

  • Power rating: It delivers a steady 63kVA prime output for continuous workloads and can scale up to 69kVA standby capacity during emergency blackouts (50Hz, 0.8 power factor).
  • Automatic voltage regulator: A responsive AVR module comes factory installed to track and steady currents quickly.
  • Copper core design: Built with premium insulated copper stator windings to keep internal impedance low.
  • Vibration control: The internal components and rotor are dynamically balanced to meet strict vibration standards.
  • Chassis and insulation: Features an IP23 weather shell with Class H thermal protection.
  • Junction box access: The terminal box gives service teams immediate room for quick output terminations, phase balancing and routine maintenance.

PRODUCT SPECIFICATIONS

Weight 270 kg
Dimensions 78 × 58 × 73 cm
Brand

StromerPower

Product Type

Alternator

Phase

Three Phase

Alternator Prime Power

63kVA

Alternator Standby Power

69kVA

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

SX460

Stator

2/3 Pitch

Rotor

Single Bearing

Flywheel Housing (SAE)

#3 / 11.5"

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