Standard Industrial Groups - K20U

Power Products K20U Generator Set, equipped with a KOHLER DIESEL engine and an alternator. Direct access to sections GENERAL FEATURES General characteristics Description Power table Engine type KDI1903M Performance class G2 Frequency (Hz) 60 Reference voltage (V) 480/277 Max power ESP (kVA) 25 Max power ESP (kWe) 20 Max power PRP (kVA) 22.70 Max power PRP (kWe) 18.20 Current (A) 30 Standard cabinet APM303 Optional cabinet TELYS Optional cabinet TERMINAL Mechanical regulation Welded chassis with anti-vibration suspensions Power circuit breaker Radiator for temperature range 48/50°C max with mechanical fan Fan protection grille and rotating parts (CE Option) Silencer attenuation 9dB(A) delivered separately Charged battery(ies) with electrolyte Starter and charging alternator 12V Delivered with oil and coolant -30°C User manual and commissioning guide Voltages ESP PRP Amperes backup kWe kVA kWe kVA 480/277 20 25 18.2 22.7 30 440/254 20 25 18.2 22.7 33 220/127 20 25 18.2 22.7 66 208/120 18 22.5 16.4 20.5 62 ENGINE FEATURES General data Exhaust Fuel Oil Thermal balance Intake air Cooling system Emissions Engine brand KOHLER DIESEL Engine ref. KDI1903M Aspiration type Atmospheric Number of cylinders 3 Cylinder arrangement L Displacement (L) 1.86 Bore (mm) 88 Stroke (mm) 102 Compression ratio 18.5 : 1 Speed (RPM) 1800 Piston speed (m/s) 6.12 Power ESP (kW) 18.40 Regulation class (%) +/- 2.5% BMEP (bar) 5.90 Regulation type Mechanical Exhaust gas temperature @ ESP 60Hz (°C) 520 Exhaust gas flow @ ESP 60Hz (L/s) 70 Exhaust back pressure (mm H2O) 600 Max fuel pump flow (L/h) 30 Oil capacity (L) 8.70 Min oil pressure (bar) 1.50 Max oil pressure (bar) 10 Oil sump capacity (L) 8.50 Heat rejected in exhaust (kW) 15 Heat rejected in water (kW) 19.2 Max intake back pressure (mm H2O) 170 Engine and radiator capacity (L) 6.80 Max water temperature (C°) 110 Coolant type Glycol-Ethylene HT thermostat (°C) 79-93 ALTERNATOR FEATURES General data Other data Alternator ref. AT00404T Number of Phases Three-phase Power Factor (cos Phi) 0.80 Altitude (m) 0 to 1000 Overspeed (rpm) 2250 Number of poles 4 Insulation class H Temperature class (H/125°) continuous 40°C H / 125°K AVR type DSR Total Harmonic Distortion no load THD (%) 3.6 Waveform: NEMA = TIF Waveform: IEC = FHT Number of bearings 1 Direct coupling Voltage regulation at steady state (+/- %) 1 Continuous rated power 40°C (kVA) 24 Backup power 27°C (kVA) 25.80 Efficiency at 100% load (%) 89.50 Air flow (m3/s) 0.0970 Short circuit ratio (Kcc) 0.62 Unsaturated synchronous longitudinal resistance (Xd) (%) 184.50 Unsaturated synchronous transverse resistance (Xq) (%) 80 Transient no-load time constant (T'do) (ms) 850 Saturated transient longitudinal resistance (X'd) (%) 14.60 Transient short circuit time constant (T'd) (ms) 44 Saturated subtransient longitudinal resistance (X''d) (%) 8.40 Subtransient time constant (T''d) (ms) 14 Subtransient time constant (T''q) (ms) 10 Saturated subtransient transverse resistance (X''q) (%) 19.20 Unsaturated homopolar resistance (Xo) (%) 3.38 Saturated inverse resistance (X2) (%) 12.50 Armature resistance (Ra) (%) 0.0410 Armature leakage resistance (Xa) (%) 4.40 Armature time constant (Ta) (ms) 12 No-load excitation current (io) (A) 0.50 Load excitation current (ic) (A) 1.50 Load excitation voltage (uc) (V) 15.90 Response time (Delta U = 20% transient) (ms) 200 Starting (Delta U = 20% permanent or 50% transient) (kVA) 76 Transient Delta U 4/4 load-Cos Phi 0.8 AR (%) 14.10 No-load loss (W) 569 Heat dissipation (W) 2253 DIMENSIONS Dimensions compact version Dimensions soundproof version Length (mm) 1410 Width (mm) 720 Height (mm) 1080 Net weight (kg) 490 Tank capacity (L) 50 Soundproofing type M126 Length (mm) 1750 Width (mm) 775 Height (mm) 1230 Net weight (kg) 660 Tank capacity (L) 50 Sound pressure level @1m dB(A) 77 Sound pressure level @7m dB(A) 67 CABINET APM303, essentials made simple TELYS, ergonomic and user-friendly TERMINAL The APM303 is a versatile cabinet allowing operation in manual or automatic mode. It offers the following features: Measurements: Single and composite voltage, fuel level. (Option: active power currents, apparent powers, power factors, kW/h energy meter, oil pressure, coolant temperature) Supervision: Modbus RTU communication over RS485 Reports: (Option: 2 configurable reports) Protections: Overspeed, minimum and maximum voltage, minimum and maximum frequency, oil pressure, coolant temperature (maximum active power P) Traceability: Memory of 12 recorded events For more information, please refer to the technical sheet of the APM303. Extremely versatile, the TELYS cabinet is complete yet remains very accessible thanks to in-depth work on ergonomics and user-friendliness. With a large display screen, buttons, and a scrolling knob, it opts for simplicity and emphasizes communication. It offers the following features: Electrical measurements: Voltmeter, Ammeter, Frequency meter. Engine parameters: Hour meter, Oil pressure, Water temperature, Fuel level, Engine speed, Battery voltage. Alarms and faults: Oil pressure, Water temperature, No start, Overspeed, Minimum/maximum alternator, Minimum/maximum battery voltage, Emergency stop, Fuel level. Ergonomics: Navigation knob between different menus. Communication: Remote control software, USB connections, PC connection. For more information on the product and its options, please refer to the commercial documentation. The cabinet serves as a simple terminal for connecting to an electrical cabinet. It offers the following features: Emergency stop button, customer connection terminal, CE compliance.