The Könner & Söhnen KS 5500iEG S combines petrol and LPG operation with a 230V pure sine wave inverter output. It delivers 5.0kW rated power on petrol, with a 5.5kW maximum rating, for compatible equipment at outdoor events, workshops and backup installations. Electric and recoil starting, a sound-insulated enclosure and an integrated transport system make it a practical choice when you need portable power and a choice of fuel.
Free delivery to mainland Great Britain only.
At a glance
| Rated / maximum power on petrol | 5.0kW / 5.5kW |
|---|---|
| Rated / maximum power on LPG | Approximately 4.5kW / 4.95kW* |
| Output | 230V, single phase, 50Hz; pure sine wave inverter |
| AC sockets | 1 × UK 13A household socket; 1 × 32A Commando (CEE) socket — both 230V. |
| Starting | Electric and recoil |
| Petrol tank capacity | 13.5 litres |
| Petrol runtime at 50% load | Approximately 8.4 hours |
| Net weight | 52.5kg |
*LPG figures are calculated from the manufacturer’s stated 10% reduction in output.
Why choose the KS 5500iEG S?
- Choice of fuel: run on petrol or LPG using the model’s dual-fuel system. LPG operation has a lower available output.
- Inverter output: produces a pure sine wave at 230V and 50Hz for compatible sensitive electrical equipment.
- Two starting methods: electric start for convenience, with a recoil starter as an alternative.
- Economy mode: reduces engine speed at light loads to help reduce fuel consumption. Follow the manual’s load limits for this mode.
- Clear operating information: the display shows load, fuel level, voltage, frequency and operating hours, with indicators for oil level and overload.
- Protection and monitoring: low-oil shutdown, overload protection and a reset control help you monitor and manage operation.
- Easier positioning: integrated wheels and a transport handle help move the 52.5kg unit on suitable surfaces.
Power, fuel and connections
Plan your load
Use the rated output and allow for motor starting loads. Stay within socket and cable limits.
For prolonged loads, the manufacturer recommends up to 80% of rated power: 4.0kW on petrol or 3.6kW on LPG.
Check your LPG setup
An LPG hose and regulator are supplied. Check compatibility with your cylinder; an adapter may be needed.
LPG runtime varies with cylinder size, gas type and load.
Parallel connection
Connect with compatible equipment to increase available power. Confirm the second generator, cable and combined output before purchase.
Technical specifications
| Petrol rated / maximum output | 5.0kW / 5.5kW |
|---|---|
| Voltage / frequency / phase | 230V / 50Hz / single phase |
| Power factor | 1 |
| Maximum current | 23.9A |
| AC sockets | 1 × UK 13A household socket; 1 × 32A Commando (CEE) socket — both 230V. |
| DC outlet | 12V / 8.3A |
| Parallel connection | Supported; compatible setup required |
| ATS input | No |
| Fuel | Petrol / LPG |
|---|---|
| Engine | KS 330i; single-cylinder, four-stroke, air-cooled |
| Displacement | 312cm³ |
| Engine power | 9.5hp |
| Starting system | Electric / recoil |
| Petrol tank capacity | 13.5 litres |
| Runtime at 50% load, petrol | Approximately 8.4 hours |
| Engine oil capacity | 0.85 litres |
| Recommended oil | SAE 10W-30 or SAE 10W-40 for four-stroke petrol engines |
| Starter battery capacity | 1.6Ah |
| Sound pressure level, LpA at 7m | 66dB |
|---|---|
| Sound power level, LWA | 97dB |
| Protection rating | IP23M |
| Alternator winding | Copper |
| Product dimensions (L × W × H) | 610 × 470 × 535mm |
| Packed dimensions (L × W × H) | 765 × 510 × 605mm |
| Net / packed weight | 52.5kg / 63kg |
| Manufacturer model | KS 5500iEG S |
Runtime varies with load, fuel quality, weather, altitude and equipment condition. Sound pressure at a stated distance and sound power are different measurements and should not be compared directly.
What’s included
- KS 5500iEG S dual-fuel inverter generator
- LPG hose with pressure regulator
- Parallel connection cable
- Oil filling funnel
- Spark-plug wrench
- PH2 screwdriver
- 32A Commando (CEE) plug — 230V
Engine oil, petrol, an LPG cylinder, appliance leads and any cylinder adapter required for your setup are supplied separately.
Before first use
Add the recommended engine oil before starting. Read the owner’s manual, check the oil level and follow the battery connection and fuel setup instructions. The manufacturer specifies unleaded petrol with an octane rating of 90–95 and no more than 10% ethanol.
Operate outdoors, away from doors, windows and air intakes. Exhaust contains carbon monoxide. Keep the generator dry and follow the manual’s clearance, electrical protection, refuelling and maintenance requirements. IP23M does not make the generator suitable for operation in rain.
Manuals and downloads
Warranty
Manufacturer’s warranty: 1 year or 1,000 operating hours, whichever comes first, from the date of purchase.
The warranty covers manufacturing defects, subject to the manufacturer’s warranty conditions. Eligible faults may be repaired or the product replaced. Retain your proof of purchase and any completed warranty documentation supplied with the generator.
For help with a warranty claim, contact Yardix with your order number, generator serial number and a description of the fault.
Frequently asked questions
Does it produce the same power on LPG?
No. The manufacturer specifies a 10% reduction when running on LPG. Plan your equipment load around the fuel you intend to use.
Is a gas cylinder included?
No. The generator is supplied with LPG connection equipment; you need a compatible cylinder and may need a suitable connection adapter.
Can it start automatically during a power cut?
This model has electric and recoil starting but no ATS input. Contact Yardix if you need an automatic backup solution.
Yardix support
For help choosing a generator contact Yardix on +44 20 7635 7916 or support@yardix.co.uk. For after-sales support, have your order number and generator serial number ready.
Delivery & returns
- Free UK delivery. Dispatched in 0–1 working days, delivered in 2–4 working days.
- 30-day returns. Change your mind within 30 days and send it back unused for a refund.
- UK support. Call +44 20 7635 7916 or email support@yardix.co.uk before or after you order.
