Three phase diesel generator with two 400V sockets and a 230V outlet, giving 11kW rated power for site machinery, workshops and standby supply.
Products marked (TO ORDER) may not be available from stock for same-day or next-day delivery. Please contact our team to confirm delivery dates.
Three phase diesel generator with two 400V sockets and a 230V outlet, giving 11kW rated power for site machinery, workshops and standby supply.
Products marked (TO ORDER) may not be available from stock for same-day or next-day delivery. Please contact our team to confirm delivery dates.
| BULK DISCOUNT | 3 | 5 |
|---|---|---|
| Price | £4,749.99 £5,699.99 | £4,512.49 £5,414.99 |
Order 1x to earn 4999 FASTPoints
Order to earn 4999 FASTPoints
Log in to access trade discountsThis three phase diesel generator runs a 997cc twin-cylinder engine inside a silenced steel cabinet with acoustic foam-lined doors. Two red 400V sockets supply three phase machinery, and a blue 230V socket handles single phase equipment. It sits on four castors with a top lifting eye, for site, workshop and standby power.
Many site and workshop machines, such as larger mixers, pumps, saws and compressors, need a 400V three phase supply. A single phase generator cannot run them, so work waits for a mains connection or a hired-in set. This generator supplies 11kW rated at 400V through two 16A three phase sockets, so three phase kit runs wherever the generator can be placed.
Two 400V three phase sockets: red 16A 5-pin outlets run three phase machinery and distribution boards.
230V single phase outlet: powers lighting, chargers and single phase tools from the same set.
Twin-cylinder diesel engine: runs more smoothly than a single-cylinder set and gives 7 to 8 hours from a 32L tank.
SmartGen genset controller: displays voltage, power, frequency, current, run time and engine temperature, with an oil warning.
Emergency stop and lockable glazed control door: stops the set instantly and keeps the controls protected from tampering.
Acoustic foam-lined cabinet: cuts engine noise for sites, workshops and events near occupied buildings.
Braked castors and top lifting eye: roll it into place on level ground, then lock it, or lift it with a crane or hoist.
Trades and roles
Site managers and main contractors
Groundworks and civils contractors
Electrical and M&E contractors
Workshop and fabrication teams
Plant and hire managers
Event production crews
Industries
Construction
Civil engineering
Manufacturing and fabrication
Events and hospitality
Facilities management
| Specification | Detail |
|---|---|
| Product name | SIP Medusa T15000 Three Phase Silenced Diesel Generator - 12kW 400V 230V |
| Product code | PL050007 |
| Product type | Silenced diesel generator, three phase 400V with single phase 230V |
| Maximum output | 15kVA / 12kW (400V); 4.0kW (230V) |
| Rated output | 13.75kVA / 11kW (400V); 3.6kW (230V) |
| Power factor | 0.8 |
| Rated voltage | 400V three phase / 230V single phase, 50Hz |
| Rated current | 15.5A / 15.5A |
| 400V sockets | 2x 16A red 5-pin industrial sockets (3P+N+E, 415V, IP44, IEC 60309) |
| 230V socket | 1x blue industrial socket |
| DC output | 12V, 6A, battery charging |
| Voltage regulation | Automatic voltage regulator (AVR), brushed alternator |
| Engine | 1L twin-cylinder diesel |
| Emissions | EURO V |
| Start | Key ignition electric start |
| Starter battery | 12V 36Ah |
| Fuel tank capacity | 32L diesel |
| Continuous run time | 7 to 8 hours (rating plate) |
| Engine oil | SAE 10W-30 |
| Genset controller | SmartGen HGM501: voltage, power (kW), frequency, current, battery voltage, run time, engine and generator temperature, engine oil warning |
| Safety controls | Emergency stop button, circuit breakers, overload protection |
| Control panel | Glazed control door with lock |
| Enclosure | Silenced steel cabinet, acoustic foam-lined doors, powder-coated, lockable access doors |
| Performance class | G1 |
| IP rating | IP23M |
| Markings | UKCA, CE (rating plate) |
| Altitude | Below 1000m (rating plate) |
| Mobility | Four castors, two with brakes, top lifting eye |
| Service kit | SIP PW01-03184 (air filter PW01-03321, oil filter PW01-03322, fuel filter PW01-03323) |
| Dimensions (H x W x D) | 915mm x 660mm x 1260mm |
| Weight | 291kg |
| Warranty | SIP 2-year |
| Brand | SIP (Medusa range) |
| Equipment, tool or condition | Suitability |
|---|---|
| Three phase 400V equipment with red 16A 5-pin plugs | Suitable, through the two 400V outlets |
| 230V single phase equipment with blue industrial plugs | Suitable, through the 230V outlet within 3.6kW rated |
| 230V equipment with UK 3-pin 13A plugs | Suitable with an adaptor lead, within the 230V rating |
| Mixer motors, compressors, pumps and machinery | Suitable, within 11kW rated, allowing for start-up current |
| Long shifts on site | Suitable, 7 to 8 hours continuous from a 32L tank |
| Moving across a level yard or workshop floor | Suitable, on four castors with two brakes |
| Lifting onto a vehicle or site | Suitable with a crane or hoist on the top lifting eye, by trained operatives |
| 110V site tools | Not recommended, no 110V outlet, use a 110V site transformer |
| Loads above 11kW continuous | Not recommended, choose a larger generator |
| Rough or soft ground | Not recommended on castors, lift or move it on a prepared surface |
| Indoor, enclosed or poorly ventilated spaces | Not recommended, exhaust gases contain carbon monoxide, run outdoors only |
| Connecting into building wiring | Not recommended, unless installed by a qualified electrician with a changeover switch |
Main contractors, workshop managers and event crews use this generator where three phase power is needed and mains is not available or not yet connected. It suits construction sites, temporary workshops, outdoor events and standby supply for businesses. Operators should be competent with three phase equipment, load balancing and diesel handling.
Running three phase mixers, pumps and saws on construction sites before the mains connection.
Powering a temporary workshop with three phase machinery, compressors and welders.
Supplying a site distribution board, then 110V transformers for hand tools.
Powering mobile catering, lighting and staging at outdoor events.
Providing standby power for essential equipment during planned mains shutdowns.
Charging 12V plant batteries through the DC output.
Step 1: Fit the four castors with the M8 bolts provided, lifting the generator by forklift or on the lifting eye. Position it outdoors on firm, level ground and lock the two braked castors.
Step 2: Fill the engine with 2.5L of SAE 10W-30 or 10W-40, then fill the tank with diesel, using the fuel gauge to avoid overfilling.
Step 3: Connect the grounding screw to an approved earth using wire over 6mm2 before connecting any equipment.
Step 4: With the AC breakers off, open the control door and turn the key to START for no more than 8 seconds, releasing it to ON as soon as the engine starts. If it does not start, wait 30 seconds before trying again. Let it warm up for 5 minutes before applying any load.
Step 5: Check voltage and frequency on the genset controller, then switch the circuit breakers on.
Step 6: Connect the largest three phase load first, keeping the phases balanced and the total within 11kW.
Step 7: Switch off the equipment, the main switch and the AC breakers, then run the generator for a minute without load. Turn the key to OFF, remove it, and close and lock the control door.
Loading one phase heavily while leaving the others lightly loaded.
Expecting full 11kW from the 230V socket, when its rating is 3.6kW.
Moving the generator on its castors over rough or soft ground.
Blocking the cabinet vents or the top exhaust outlet.
Using the 12V DC output and the AC sockets at the same time.
Exhaust gases contain carbon monoxide, so run the generator outdoors only and keep the exhaust away from buildings and people. Use the emergency stop if anything goes wrong while the set is running. Three phase connections and distribution should be made by a competent electrician, in line with BS 7671 and HSE guidance. At 291kg, lift only with suitable equipment on the lifting eye, under a planned lift. Wear hearing protection when working close to the generator.
Keep loads under 50% for the first 20 hours, then change the oil and oil filter. After that, change the oil every 3 months or 100 hours, and the oil filter and air filter every 6 months or 300 hours. Check the oil level before every start, using SAE 10W-30 or 10W-40. Use the run time on the genset controller to plan services, and disconnect one battery terminal if the generator will stand unused for a long time.
Q: What can a 15kVA three phase generator run?
A: It supplies 11kW rated at 400V through two red 16A three phase sockets. That suits three phase mixers, pumps, saws, compressors and distribution boards within the rating. Allow for motor start-up current, which can be several times the running current. The 230V outlet is rated at 3.6kW for single phase equipment.
Q: What do 15kVA, 12kW and 11kW mean on this generator?
A: 15kVA is the maximum apparent power, and 12kW is the maximum real power, held only for short periods. 11kW, or 13.75kVA, is the rated output it supplies continuously. The rating plate gives a power factor of 0.8, which links the kVA and kW figures. Size your loads against 11kW.
Q: What do G1 and IP23M mean on the rating plate?
A: G1 is a generating set performance class for general loads such as lighting and simple electrical equipment. In IP23M, the 2 means protection against solid objects over 12.5mm and the 3 means protection against water sprayed at up to 60 degrees from vertical. The M means the water test was carried out with the moving parts running.
Q: What is this generator not suitable for?
A: It has no 110V outlet, so 110V site tools need a 110V transformer. It is not suitable for indoor or enclosed use, loads above 11kW continuous, or moving on castors over rough ground. It should not be connected into building wiring unless a qualified electrician fits a changeover switch.
Q: Why choose this over a single phase diesel generator?
A: It supplies three phase 400V for machinery that single phase generators cannot run. It gives 11kW rated, more than double the 5kVA single phase model, and still has a 230V outlet. A single phase generator is lighter and simpler, so it suits jobs with 110V and 230V tools only.
Q: Which plugs fit the sockets?
A: The two 400V outlets take red 16A 5-pin plugs (3P+N+E) to IEC 60309. The 230V outlet is a blue industrial socket. Three phase equipment with 32A plugs needs a suitable adaptor or distribution board.
Q: How often does it need servicing?
A: Keep loads under 50% for the first 20 hours, then change the oil and oil filter. After that, change the oil every 3 months or 100 hours, and the oil and air filters every 6 months or 300 hours. The genset controller records run time, so you can service at the right intervals.
