Kirloskar / KOEL
25 kVA Diesel Genset (3R550ETA)
Kirloskar 3R550ETA 4G1, 26.5 kW (36 HP) Prime rated output at 1500 RPM, Turbocharged Aftercooled
- Prime
- 25kVA
- Noise @ 1 m
- 75dB(A)
- Weight
- 770kg
- Fuel tank
- 50L

Specifications
Kirloskar / KOEL 25 kVA specifications
Engine and alternator
- Engine model
- Kirloskar 3R550ETA 4G1, 26.5 kW (36 HP) Prime rated output at 1500 RPM, Turbocharged Aftercooled
- Cylinders
- 3, In-line - 86x94mm bore x stroke, 1.65L displacement, CRDi fuel system, G2 governing class (ISO 8528 Part V), 500hr lube oil change interval, 5.95L lube oil sump capacity, DOC (diesel oxidation catalyst) + EGR exhaust aftertreatment, 12V DC electric start
- Alternator
- Brushless, Class H insulation, 87.9% efficiency @100% load 0.8pf, <20% max voltage dip at full load 0.8pf lag, <2 sec to build rated voltage, 230V (1P) / 415V (3P), 50Hz
- Cooling
- Liquid cooled (radiator), 4.9L coolant capacity
- Control panel
- KG640C microprocessor-based genset controller: graphical LCD display, phase voltages/currents, frequency, kVA/kW/kWh/kVAr, power factor, lube oil pressure, engine temperature, RPM, run hours, number of starts, fuel level, auto/manual stop, battery charge condition, AMF feature; diagnostics for battery charging failure, over/under speed, over current, over/under voltage, over kW, phase sequence/missing, mains under voltage, low fuel level, low lube oil pressure, high engine temperature, low/high battery voltage, over-crank protection, routine maintenance indicator, genset test facility, mains frequency; optional Modbus communication
Fuel
- Fuel tank capacity
- 50 L
- Fuel use @ 75% load
- Not published by the maker
- Runtime @ 75% load
- Not published by the maker
Size and build
- Dimensions (L × W × H)
- 2330 × 950 × 1260 mm
- Dry weight
- 770 kg
- Enclosure
- Not published by the maker
- Noise @ 1 m
- 75 dB(A)
Compliance and warranty
- Emission norm
- CPCB IV+
- Warranty
- Not published by the maker
- Indicative price
- Not published by the maker
Source & notes ›
Specifications per Kirloskar Oil Engines Ltd (Kirloskar Powergen)'s official "25-58.5 kVA CPCB IV+ Compliant" technical specification catalogue (print code 20240610/REV01/A4; footer text says "CPCB IV+25-82.5 kVA", likely a reused template footer -- the cover and spec table both clearly state 25-58.5 kVA, trusted over the footer). Sourced from the open web (kirloskaroilengines.com) as part of a targeted search for the site's remaining zero-model brands. Verified via bore x stroke x cylinder-count vs. stated displacement cross-check (86x94mm x 3-cyl = 1.638L, matches stated 1.65L within rounding) -- same engine block as the 15/20 kVA ratings in Kirloskar's 7.5-20 kVA range, just Turbocharged Aftercooled here vs. TC/NA there. Rated Prime only -- document explicitly states "Kirloskar offers Prime power as a standard offer. Contact Kirloskar for stand-by ratings" -- no Standby figure given. This range explicitly names CRDi (common rail direct injection) and a DOC+EGR exhaust aftertreatment combination, unlike the smaller 7.5-20 kVA range's brochure which didn't detail an aftertreatment system. Noise (75 dBA) is the document's own stated design ceiling, not a certified per-unit test result. Two weight figures given (Dry, Wet w/o fuel) -- uses Dry per site convention. No fuel-consumption LPH figure stated anywhere -- left null. No warranty or price figure stated. Product photo is the brochure's own real product photo, representing the whole 4-model range, not confirmed specific to this exact kVA.