CM-MB1400
Diesel generator set built around the Mitsubishi S12R-PTA-C engine, rated to ISO 8528-1.
- Standby rating
- 1,400 kVA
- Prime rating
- 1,250 kVA
- Engine platform
- S12R-PTA-C
- Frequency
- 50 Hz
Remote mines, drilling rigs and oilfield camps run on diesel as prime power, not standby. Cunmi builds heavy-duty, dust-tolerant packages with oversize cooling and dual fuel filtration.
In a mine, the generator is the grid. That means prime-power ratings, continuous duty at high ambient temperature, and a service philosophy built around planned shutdowns rather than unplanned failures.
Our mining packages use marine-derived engine platforms with high torque rise for crusher and mill starting loads, plus a 100 % oversize radiator and two-stage fuel filtration for sites running on heavy or contaminated fuel.

Each rating below is a published row from the brand model tables. Open Size range for the full span, or View for the engine and alternator details.
Diesel generator set built around the Mitsubishi S12R-PTA-C engine, rated to ISO 8528-1.
Diesel generator set built around the MTU 12V4000G14RF engine, rated to ISO 8528-1.
Diesel generator set built around the Cummins KTA38G2 engine, rated to ISO 8528-1.
Continuous 24/7 duty at 40 – 50 °C ambient with derate documentation.
Oversize radiators, cyclonic pre-cleaners and dual fuel filters.
High torque rise for crushers, mills, conveyors and hoists.
Containerised workshops and multi-unit spare-part kits for remote camps.
The same three stages run on every order, whatever the configuration: engineering before the quotation, a documented load test before packing, and support after the set is on site.

Load schedule, starting currents, ambient and altitude derating are worked through before a rating is proposed — the alternator is sized for the largest step, not the average.

Assembly, wiring and paint in one works, then a four-point load bank run at 25 / 50 / 75 / 100 % with the test sheet serial-numbered to the set.

Export packing, documentation and commissioning guidance, with spare-parts supply and remote diagnosis for the life of the installation.
The project behind the homepage card — what was asked, what we supplied and how it runs today.
The field runs on diesel as prime power — there is no grid to fall back on. Downtime is measured in drilling hours, so serviceability mattered as much as the rating.
Five open-frame sets specified for continuous duty, with single-side service access so every routine maintenance task stays inside the planned shutdown window.
The fleet runs continuously, with consumables and service planned around the field's own maintenance calendar.

Technical articles and product updates relevant to this application.
Send us the load profile, site conditions and redundancy requirement. A Cunmi sales engineer will come back with a sized recommendation and budget quotation.
I'm ready to proceedSizing, paralleling, noise limits or grid codes — our application engineers answer specification questions before you commit to a configuration.
I have a questionConsumables, long-lead items and overhaul kits for the twenty most common platforms, held in regional hubs and quoted with honest lead times.
I have a service request