The DCGO-25-48-KDI1903TC-000 is a 25 kW variable-speed DC generator set on a 48 V nominal bus — the largest standard set in the range. It pairs a Kohler KDI1903TC diesel with an Innotec Power 310 series permanent magnet alternator, feeding a battery bank or DC load directly through a passive rectifier.
| Model number | DCGO-25-48-KDI1903TC-000 |
|---|---|
| Max DC output | 25 kW |
| Nominal system voltage | 48 VDC |
| Alternator output | 48–60 VDC |
| Dimensions (L×B×H) | 1,500 × 1,000 × 1,200 mm |
| Weight | 585 kg approx. |
| Ambient range | −5 °C to 50 °C |
| Peak efficiency | Over 93% |
Permanent magnet alternator
Innotec Power 310 series flywheel-mounted PMA, rated 25 kW DC with a maximum speed of 2,600 rpm and a working range of 2,000–2,600 rpm. Brushless and bearing-less, Class H insulation, forced cooling with an internal fan, high variable frequency and low ripple.
Lower rated speed than the 14 kW set — the larger frame delivers its output at fewer revolutions, which suits continuous-duty installations where engine life matters more than package size.
Engine
| Engine | Kohler KDI1903TC series |
|---|---|
| Configuration | 3 cylinder, in-line, 4 stroke, liquid cooled diesel |
| Maximum power output | 36 kW |
| Fuel consumption | 245 g/kWh |
| Injection | IDI common rail |
| Speed range | 1,500–2,600 rpm (variable) |
| Starting | Electrical |
| Lubrication | 10W-40 API CI4 |
| Emissions | EU Stage V |
The engine is rated well above the electrical output, so the set runs away from its limit at full load rather than at it.
Control panel and protection
Every DCGO genset ships with a variable-speed DC genset controller running a precision PID loop, which matches the charging characteristic rather than simply holding a fixed voltage. Protection covers overvoltage, overcurrent, overspeed, overheat, thermal and short circuit.
- ECU connection through J1939 CAN (option)
- Isolated volt–amp measurement
- 100 event logs with time stamp and measurements
- Field-adjustable parameters
- MODBUS communications
- GSM SMS message on fault
Fuel tank options
Three fuel configurations are available: open-frame with no tank, an integrated tank of 200, 400 or 600 litres, or a custom capacity to suit the installation.
Why a DC genset rather than an AC set plus rectifier
A DC genset lowers operating cost by removing the conversion stage. A passive rectifier feeds the DC bus directly and engine speed is varied to regulate voltage, so the machine is not tied to a fixed 1,500 or 1,800 rpm just to hold frequency. Peak efficiency is engineered above 93%, and the alternator is brushless and bearing-less — no slip rings, no exciter, no diodes to fail.
Where the 25 kW is used
- Auxiliary power units on larger vehicles and specialist platforms
- Hybrid and autonomous equipment with substantial DC loads
- Telecom sites and data centres
- Mobile light towers and material handling
- Continuous-duty off-grid and battery charging installations
Other DC generator sets
Below this sit the 14 kW set in 24 V and 48 V, and the 5 kW set on an air-cooled single cylinder engine. The full DC generator range spans 24 V to 96 V across generator heads, PTO units and complete sets.