SDEC 20 kVA Single-Phase Silent Diesel Generator with ATS (GKSD-22S)

A quiet, reliable backup generator for shops, offices, restaurants, clinics, estates and small workshops that need steady 230 V single-phase power in Gauteng.

In plain English — what you’re getting

• 20 kVA prime / 22 kVA standby: enough for POS, computers/Wi-Fi, fridges/freezers, LED lighting, small HVAC, pumps and light machinery (we’ll size starting currents for you).

• Starts itself during an outage: the ATS (automatic transfer switch) detects load-shedding and switches the power over, then back again when the grid returns.

• Runs quietly in a weatherproof “silent” canopy: powder-coated steel, sound-absorbing foam, and a thermally insulated exhaust keep noise and weather under control.

• Built to last: proven SDEC 2.7 L, 4-cylinder diesel engine at 1500 rpm (efficient, long-life) plus a StromerPower brushless alternator with AVR to keep voltage stable for sensitive electronics.

Key specs (the useful bits)

• Power: 20 kVA prime (continuous), 22 kVA standby

• Voltage / frequency: 230 V, 50 Hz, single-phase

• Fuel use (guide): ~5.9 L/h @ 100% load, ~4.5 L/h @ 75%, ~3.2 L/h @ 50%

• Fuel tank: ~160 L base tank with gauge (long runtime)

• Size & weight: ±1950 × 930 × 1270 mm; ±740 kg*
  *Dimensions may change slightly—confirm at order. High altitude/heat may reduce rated output (we’ll advise).

Smart control you can trust

• Smartgen controller + ATS included: shows volts, amps, frequency, hours, battery volts, oil pressure, temperature, engine speed.

• Safety shutdowns: low oil, high temperature, over/under-voltage or frequency, over/under-speed, fail-to-start/stop, emergency stop.

Why businesses pick this model

• Quiet & compact with easy side-door access for servicing.

• Clean power for electronics thanks to the AVR (voltage stays steady).

• Low hassle: maintenance-free battery, integrated base fuel tank, clear cable entry and lifting points.

What’s in the box

• Factory-built silent generator with base tank

• ATS (auto start/stop) included

• Maintenance-free battery, battery charger, exhaust silencer

• Smartgen controller and full protection suite

• User/installation manual

Enerlux installation & support (Gauteng)

We supply, deliver, install and commission in Gauteng. Our registered electricians:

• Connect the ATS to your DB and clearly label essential vs non-essential loads

• Add surge protection and correct earthing for Gauteng storms

• Issue an Electrical CoC on completion
  Options: concrete plinth, weather cowls, external bulk tank, remote monitoring, service plans.

Is 20 kVA right for you?

Send us your suburb and a quick load list (or photos of your DB and main equipment). We’ll confirm if 20 kVA single-phase covers you or recommend the next size up, then give you a fixed, itemised quote.

Detailed specifications

Engine (SDEC 4Z2.7-G21)

• 2.7 L, 4-cyl, water-cooled; turbocharged & intercooled; four-stroke, direct injection, CR 18:1

• Output @1500 rpm: ≈22 kW; governor: electrical

• Fuel system: in-line injection pump; electronic lift pump

• Fuel consumption: 5.9/4.5/3.2/2.1 L/h @ 100/75/50/25% load

• Capacities: oil 6–7 L (15W40); coolant (engine) 6.4 L

• Starter: 12 V

• Filtration: replaceable fuel & oil filters; dry-element air filter

Alternator (StromerPower)

• Standby 22 kVA / Prime 20 kVA, brushless, self-exciting, self-regulating

• AVR SX460, regulation ±1%; 50 Hz; PF 0.8

• Insulation Class H; IP23; stator 2/3 pitch; single-bearing rotor

• Phase: single-phase, two-wire (terminal arrangement supports 230/400 V systems)

Control & protection

• Modes: STOP/RESET – MANUAL – AUTO – TEST – START

• Metering: mains/gen V (L-L/L-N), gen A (L1/L2/L3), Hz, cos φ, hours, battery V, oil pressure, rpm, temp

• Protections: under/over-speed, high temp, low oil, fail to start/stop, charge fail, under/over-V, under/over-Hz, E-stop, mains under/over-V

Canopy & chassis

• Sound-attenuated, weather-resistant, powder-coated steel; modular ventilation; thermal-insulated exhaust

• Lockable access doors; clear panel window; external emergency stop; anti-vibration mounts

• Integrated fuel tank with dial gauge; easy cable entry; lifting/moving points

Note: Ratings quoted at sea level, 25 °C, PF 0.8. Derating applies at altitude/high ambient. Specifications may change; confirm at order.