Electrical machines for places where failure is not a maintenance issue.
Explosion-proof and general-purpose motors, synchronous machines, generators, voltage stabilizers and special transformers — engineered, built and tested for hazardous and demanding industrial environments.
Schematic outlines — factory photography to be commissioned
Three ways in, because visitors arrive knowing different things
Some engineers already have a model number. Others have a pump curve and an area classification drawing. A third group has a failed machine and a shutdown date. The site does not force any of them through the same funnel.
Product finder
Filter the full range by power, voltage, speed, protection class, explosion group and eighteen further parameters.
Guided selector
Six questions about the driven equipment, environment and supply. Returns a shortlist, or tells you the requirement needs engineering.
Replacement finder
Search by the designation on the existing nameplate — including legacy AIR, VAO, 4A, SDN and competitor series.
Eight product families
Each family has its own technical attribute set. A hydro generator and a voltage stabilizer do not share a specification template, and pretending otherwise produces pages full of empty cells.
Explosion-Proof Motors
Certified machines for Zone 1, Zone 2 and mining installations
General-Purpose Motors
Low- and medium-voltage asynchronous motors for continuous duty
Synchronous Motors
Constant-speed drives with controllable reactive power
Industrial Generators
Synchronous generators for prime, standby and cogeneration duty
Hydro and Wind Machines
Generators matched to a specific site, head and rotor
Voltage Stabilizers
Holding supply voltage where the network will not
Special Transformers
Transformers designed against a duty, not a standard rating
Custom and Replacement Machines
When the machine that fits is no longer manufactured
An engineering works, not a catalogue business
The commercial value is in the machines that are not standard: replacements for units out of support, drives for a duty a distribution product will not survive, and generators matched to one specific site.
Continuous production of rotating electrical machines from a single works.
From fractional industrial drives to synchronous machines above 10 MW.
Single-unit and engineered-to-order production is normal work, not an exception.
Flameproof, increased-safety and dust-protected constructions, plus Group I for mining.
Where these machines work
Delivered installations
An EPC engineer is convinced by a comparable installation, not by a capability statement. Named clients, real constraints and measurable outcomes are what this section needs — and what has to be cleared for publication.
Synchronous mill drive replacement, copper concentrator
Replacement of a 4 MW synchronous mill drive within the existing foundation and shutdown window.
- Rating
- 4 000 kW
- Voltage
- 10 000 V
Zone 1 pump motor package, refinery expansion
Twenty-four flameproof motors for process pumps across a mixed IIB and IIC area classification.
- Units
- 24
- Rating range
- 15 – 132 kW
Generator refurbishment, 2.4 MW run-of-river plant
Two vertical hydro generators replaced inside a powerhouse built in 1968, to the original civil works.
- Units
- 2
- Rating
- 1 200 kVA each
Documentation supplements the site — it does not replace it
Catalogues, data sheets, dimensional drawings, certificates and questionnaires. Nobody should need to download a PDF to establish whether a machine is a candidate.
Technical notes
- News2026-06-18
AM series extended with IE4 variants up to 250 kW
The general-purpose range now covers IE4 efficiency across frames 160 to 355, with unchanged IEC mounting dimensions.
- Technical note2026-05-30
Specifying a motor for variable-frequency supply
Insulation stress, bearing currents and cooling at low speed — the three things that shorten the life of a standard motor on a drive.
- Technical note2026-04-22
How to read an Ex marking before you order
II 2G Ex db IIC T4 Gb — what each field constrains, and why the certificate rather than the catalogue is the governing document.
The questionnaire changes depending on what you are asking for.
Five technical questionnaires from the printed catalogue — motors, generators, hydro generators, stabilizers and transformers — as one guided form that only asks what applies to your machine.