140kVA Three Phase Alternator STRO-138K

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The StromerPower 140kVA Three Phase Alternator (STRO-138K) is a commercial-grade, three-phase low-voltage AC alternator engineered within a strict ISO 9001 quality assurance environment to deliver uncompromising reliability. Designed as a premium component for stationary diesel generator sets, mobile power plants, and industrial equipment, this 4-pole brushless alternator features high efficiency, low reactance, and exceptional motor-starting capacity under heavy starting loads.

  • Dual-Rating Performance: Delivers 125kVA Prime power and up to 140kVA Standby power output at a stable 50Hz frequency (PF = 0.8).
  • Advanced Voltage Regulation: Features the industry-standard SX460 AVR model maintaining a tight +/- 1% voltage regulation to shield sensitive equipment from fluctuations.
  • Clean Power Winding: Implements a 2/3 pitch stator winding layout that cleanly suppresses lower-order harmonic distortion, keeping Total Harmonic Distortion (THD) under 5%.
  • Rugged Mechanical Interface: Built with a resilient single-bearing configuration optimised for native SAE housing flange and clutch flex plate alignment setups.
  • Industrial Grade Protection: Outfitted with an IP23 weather-protective enclosure, Class H insulation, robust steel base, and dynamically balanced rotors compliant with ISO 1940 vibration specifications.
SUPERIOR QUALITY AND PERFORMANCE

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

GENERAL SPECIFICATIONS

StomerPower 140kVA Alternator

Protect large corporate assets and stabilise heavy multi-phase loads with the rugged electrical framework of the StromerPower 140kVA Three Phase Alternator (Model: STRO-138K). Developed purposefully to manage the extreme transient stresses of intensive industrial manufacturing and deep load-shedding cycles, this 4-pole brushless synchronous unit serves as an excellent high-output choice for localised mini-grids, expansive warehouse structures, and essential municipal waterworks. Operating smoothly at 1500rpm, the self-excited internal layout balances thermal margins excellently to safeguard structural component life through long power generation blocks.

Engineered to sustain a perfectly balanced alternating current across all three lines under uneven structural loads, the STRO-138K delivers an incredibly stable 125kVA prime load capability. Sourcing this genuine StromerPower electrical platform ensures that complex industrial plant systems, central chilled-water infrastructure, continuous milling operations, and corporate server setups run securely without experiencing voltage collapse.

Comprehensive Phase Equalisation and Advanced Waveform Filtering

Built with high-velocity aerodynamic internal ventilation pathways and highly disciplined manufacturing parameters, this model couples easily with heavy diesel engines without creating mechanical shaft deflection or vibrational feedback loops. The thick structural steel base and high-purity insulated copper stator design ensure a long-term, dependable generation asset engineered for continuous commercial output.

StromerPower 140kVA Alternator Key Features

  • Substantial Phase Balance: Delivering a continuous 127kVA prime rating, this unit maintains exceptional balance across all three phases under uneven commercial building loads.
  • Refined Vibrational Baseline: Dynamically balanced rotor components comply with strict ISO vibration criteria, reducing overall machine wear inside soundproof canopy assemblies.
  • Optimised Copper Cores: Built using premium-grade copper stator windings to keep internal impedance low, helping to limit engine fuel burn during extended backup runs.
  • Rigid Structural Chassis: The heavy-gauge steel base frame prevents physical warping during logistics transport and stands up well to high-torque start-ups.
  • Precise Loop Regulation: Comes equipped with a responsive Automatic Voltage Regulator (AVR) to steady outbound currents and protect sensitive electronics from voltage sag.
  • Industrial Isolation Rating: Outfitted with Class H thermal insulation and an IP23 outer protective shell to keep production lines active in humid or dusty spaces.
  • Technician-Friendly Layout: An expanded, easily accessible top terminal box simplifies phase configuration changes, primary connections, and AVR routine servicing.
  • Harmonic Control Barrier: Supported by StromerPower's established engineering background, this low-reactance design limits wave distortion to ensure exceptionally clean, steady sine waves.

PRODUCT SPECIFICATIONS

Weight 427 kg
Dimensions 85 × 68 × 82 cm
Brand

StromerPower

Product Type

Alternator

Phase

Three Phase

Alternator Prime Power

125kVA

Alternator Standby Power

140kVA

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:
From Leading Global Facilities Straight to Your Project Site

World-Class Manufacturing, Streamlined Distribution

At LiFeTIDE, we bypass intermediate brokers to align your business directly with the world’s most advanced powertrain and electrical component manufacturing facilities. We secure tier-one access to state-of-the-art production lines including the globally acclaimed SDEC and Baudouin facilities.

Every engine, alternator, and component we source is manufactured under stringent international quality controls and rigorously tested for the harsh operational profiles of Sub-Saharan Africa.

From individual component integration for local generator builders to turnkey commercial 3-phase setups, our managed logistics network ensures seamless factory-to-site delivery, guaranteed stock availability, and uncompromised engineering integrity.

Seamless Supply and Delivery Channels

Sub-Saharan Logistics Infrastructure

Managing heavy engineering components and high-capacity standby power systems across African borders requires absolute precision, established freight channels, and ironclad regulatory compliance.

At LiFeTIDE, our logistics framework is built to handle the complex weight of heavy industrial transport. We coordinate the entire lifecycle of your asset from secure international factory container loading and local port clearance to heavy-haul overland distribution.

Whether you are a generator builder in Johannesburg requiring bulk engine shipments or a registered trade dealer anywhere in Southern Africa, we have you covered.

Our cross-border freight routes are fully optimised to navigate customs frameworks, minimise port delays, and guarantee predictable delivery timelines directly to your facility or project site.

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 LiFeTIDE offer installation?

No, LiFeTide do not offer any installation services, but, any qualified electrician can install the Pre-Configured LiFeTIDE Loadshedding Kit.

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 if registered on our warranty form along with a valid COC and images of the installation. It is a limited warranty. The goods need to be returned to us as per our standard Terms and Conditions of Sale.

Price validity

All pricing is valid while stocks last as reflected on this website page for the product listed, as specified herein and subject to change without prior notification. Â