Large industrial generator
400 kVA diesel generator
Rated output: 400 kVA · Approx. 320 kW at PF 0.8 · Voltage: 400 V / 50 Hz
400 kVA generators are a powerful standby source for large production plants, logistics areas and Tier II–III data rooms. The 320 kW output (at PF 0.8) can support selected loads of a large production hall or industrial site, with the final coverage verified from the load and start profile.
Duty types
PRP and ESP are not interchangeable
ESP — standby power
Emergency operation during grid outages at variable load. The rating applies to limited-hour standby duty, not continuous running.
PRP — prime power
Variable continuous operation as the main power source. A prime rating is lower than the standby rating of the same unit and is confirmed per engine and application.
Tell us the intended duty when you inquire — the required rating (PRP or ESP) for your 400 kVA project is confirmed during sizing, never assumed.
Typical use
Typical applications for a 400 kVA generator
Large production plants
Backup for industrial sites with energy-intensive machines, robots and automated lines.
Data rooms (Tier II–III)
Backup for mid-size data rooms — changeover in about 10 seconds, compatible with UPS bridging.
Logistics areas
Power for automated warehouses, sorting systems, cold stores and loading zones.
Energy projects
Backup or primary power for off-grid projects and industrial sites away from the grid.
Rental companies
A powerful trailer-mounted unit for large construction projects and short-term industrial applications.
Pumping stations and pipelines
Backup for pumping stations, transfer nodes and pipeline technology in the energy sector.
Available brands
Manufacturers available at 400 kVA
AKSA
20–3000 kVAPrimary brand of ESKO Generator — authorised dealer for the Czech Republic and Slovakia; other brands are available depending on the project.
Ask about AKSA 400 kVAHimoinsa
6–3000 kVASpanish manufacturer with a strong presence in the EU; quiet executions, with Stage V available on selected models subject to model confirmation.
Ask about Himoinsa 400 kVAEnergy Gruppi
10–3000 kVAItalian manufacturer specialised in industrial generators for energy projects and critical infrastructure.
Ask about Energy Gruppi 400 kVAInmesol
10–2500 kVASpanish manufacturer of trailer-mounted and stationary generators for construction, rental and industry.
Ask about Inmesol 400 kVATechnical options
Typical configuration of a 400 kVA generator
Automatic transfer switch (ATS)
Outage detection and automatic start in about 10 seconds on suitable models, with smooth changeover and shutdown after grid recovery.
Parallel operation
Multiple 400 kVA units in parallel for scalable output and redundancy in critical applications — a project configuration, designed individually.
Remote monitoring options
GSM alarm notifications and real-time remote diagnostics of output, fuel state, temperatures and alarms where supported by the control unit; API/SCADA integration as an individual project solution.
Fuel tank options
Tanks for around 48 hours of continuous operation, with the option of connecting an external tank for longer autonomy depending on the model.
All options above are project variants depending on the selected model and agreed scope — they are not universal features of every unit. Tank autonomy, sound levels, monitoring interfaces, HVO compatibility and paralleling are confirmed for the specific configuration in your quotation. All units come with the manufacturer's warranty.
By application
Looking for a generator for your industry?
Related power pages
Frequently asked questions
400 kVA — common questions
Is a 400 kVA generator the right size for my project?
A 400 kVA rating corresponds to roughly 320 kW of usable output at a power factor of 0.8. Compare the total connected load of your facility, including starting currents of the largest motors, with the continuous load you need to sustain. Our engineers verify the final sizing from your actual load profile before a quotation.
Is 400 kVA a standby (ESP) or prime (PRP) rating?
Both duty types exist in this power class, and the numbers are not interchangeable: an ESP (standby) rating applies to emergency operation during grid outages, while PRP (prime) applies to variable continuous operation. Always tell us the intended duty — the required rating (PRP or ESP) is confirmed during project sizing, never assumed.
Is HVO fuel supported at this output?
HVO compatibility is available on selected models and engine configurations as a project option — it is confirmed for the specific unit during sizing, not assumed as standard for every generator.
Czech projects
Supply, design, commissioning or turnkey
For Czech customers we can deliver the generator alone, design the installation, commission it on a prepared site, or realize the project turnkey — with contracted service according to the agreed scope. The scope is clarified during consultation.
International
Direct sale, preferably EXW CZ/NL
International customers receive a direct generator sale, preferably EXW CZ/NL, with transport arranged individually. Installation and service abroad are confirmed individually per destination and model.
Availability and dispatch
Availability depends on the rating — the current stock list starts at 25 kVA ESP, and availability of the requested rating is confirmed in your quotation. Confirmed warehouse units can be dispatched within 48 hours after the order, conditions and payment are closed — a dispatch time, not a delivery-time promise. The current stock list covers models that are in stock or in transit.
Non-binding consultation
Ask about a 400 kVA generator
Describe your project — our engineers will verify the sizing, confirm the required PRP or ESP rating and prepare a technical proposal with a tailored quotation.