£6,000 Ex Works + VAT
£6,000 Ex Works + VAT
The Pramac GBW15Y is a compact 15 kVA silent diesel generator delivering dependable standby and prime power. Powered by a Stage V Yanmar engine, this 400V 3 phase generator combines low-noise operation, long running times and straightforward key-start control for commercial, agricultural and light industrial applications.
The GBW15Y canopied generator is rated at 15 kVA / 11 kW for emergency standby power (ESP). This rating makes it a practical backup generator for essential equipment during a mains failure, subject to correct load calculation and professional installation.
For applications requiring a regular independent electricity supply, the GBW15Y provides 13 kVA / 10 kW of prime power (PRP). Its prime rating allows the generator to support a variable electrical load for extended operation in accordance with the manufacturer’s prescribed servicing procedures and operating conditions.
This distinction matters when sizing a generator. The 15 kVA standby rating applies to emergency use during an outage, while the 13 kVA prime rating should be used when the set will operate as the main power source. Motor starting currents, load steps and future capacity requirements should also be considered before selecting the generator.
Producing 400V at 50Hz with a 0.8 power factor, the GBW15Y is designed for 3 phase electrical systems. It can support appropriately sized workshop machinery, pumps, small compressors, agricultural equipment, commercial services, site facilities and other professional loads.
The generator has a maximum current output of 19.43A per phase. A 20A 3 pole circuit breaker protects the output, so connected loads and cabling should be selected around this limit rather than the rating marked on an individual socket. Keeping single phase loads reasonably balanced across all three phases will help maintain stable operation and make effective use of the generator’s available capacity.
As a compact 15 kVA 3 phase diesel generator, the GBW15Y offers useful versatility without the footprint and fuel demand of a substantially larger industrial generator. Buyers should nevertheless allow suitable headroom for equipment with high starting currents rather than sizing solely from its normal running demand.
At the heart of this Pramac diesel generator is the Yanmar 3TNV88F-UGPGE engine. This proven 3 cylinder, in-line diesel engine has a displacement of 1642cm³ and uses natural aspiration, direct fuel injection and a mechanical speed governor.
Water cooling helps the engine manage temperature during sustained operation. The system incorporates thermostatic control, a gear-driven circulation pump, a belt-driven pusher fan and a mounted radiator. The engine also has a paper-element fuel filter, forced-feed lubrication and an accessible oil filter to support routine maintenance.
Compliance with Stage V emissions requirements makes this Yanmar diesel generator particularly relevant for markets where modern non-road engine standards apply. Its electric starting system uses a 12V circuit and a 70Ah battery, while glow-plug preheating assists reliable starting in colder conditions.
The GBW15Y enclosed generator incorporates a 51-litre plastic fuel tank with an external filling point, air breather and visual fuel-level indicator. At 75% of prime load, it consumes approximately 2.53 litres of diesel per hour and provides up to 20.16 hours of running time.
At 100% prime load, fuel consumption is approximately 3.32 litres per hour, giving a stated running time of 15.36 hours. These figures make the GBW15Y a capable 10 kW diesel generator for applications where useful autonomy and manageable refuelling intervals are important. Actual consumption will vary with electrical demand, site conditions and maintenance.
Electrical power is produced by a Linz E1S13MD alternator with four poles, Class H insulation and IP21 protection. The alternator is designed for a 400V, 50Hz supply and has a stated efficiency of 85.4% at 75% load.
Voltage tolerance is ±4% from no load to full load at a 0.8 power factor and constant engine speed. Harmonic content is specified at less than 5%, helping the 50Hz generator provide a clean output waveform for a varied mix of compatible electrical loads.
The alternator can also deliver short-circuit current exceeding rated current by three times, supporting the correct operation of protective devices. A 10% overload may be accepted for one hour in every six under the manufacturer’s stated conditions, although the generator should be sized to avoid routine overload operation.
The GBW15Y silent enclosure uses polyurethane sound-attenuating material and an internal residential silencer to reduce operating noise. Sound pressure is rated at 64dB(A) at 7m, while the guaranteed sound power level is 93dB(A).
Its single-piece hinged canopy is supported by pneumatic arms and fitted with lifting handles. Raising the canopy provides broad access to the engine and alternator, simplifying inspections, fluid checks and scheduled servicing. An oil drain pipe with cap further assists routine maintenance.
This acoustic design makes the GBW15Y suitable for occupied commercial sites, workshops, farms and other locations where an open generator would create excessive disturbance. Site-specific noise limits, airflow requirements and exhaust positioning must still be considered during installation.
The welded steel base frame includes correctly sized anti-vibration mountings and integrated support legs. A central lifting eye allows straightforward handling using suitable lifting equipment.
This model is the MCP variant, supplied with a generator-mounted manual control panel rather than an automatic controller. The key-operated start and stop selector includes glow-plug preheating, making the GBW15Y a straightforward key start diesel generator for attended operation.
Analogue instrumentation provides:
Panel alarms cover battery-charger failure, low oil pressure, high engine temperature and earth fault. Shutdown protection is provided for battery-charger failure, low oil pressure and excessive engine temperature, while the 3 pole circuit breaker protects the electrical output.
The standard socket panel includes one 400V 32A CEE outlet, one 400V 16A CEE outlet, two 230V 16A CEE outlets and one 230V 16A Schuko outlet. These connection options add flexibility, but the generator’s overall output remains limited by its 19.43A maximum current per phase and 20A circuit breaker.
Because this is a manual start diesel generator, an operator must start and stop it locally. Buyers requiring unattended mains-failure operation should select a suitably configured automatic-control version and compatible transfer equipment instead.
Measuring 1645mm long, 870mm wide and 1072mm high, the GBW15Y canopied generator has a dry weight of 465kg. Its compact dimensions help simplify transport and positioning while leaving sufficient internal space for cooling and service access.
The generator requires an unrestricted supply of cooling air, with total airflow specified at 29.92m³/min. Installation planning should also account for safe exhaust discharge, the stated exhaust-gas temperature of 425°C, servicing clearance, fuel access and a stable supporting surface.
For buyers needing a robust 15 kVA generator with three phase output, efficient fuel use and simple local controls, the Pramac GBW15Y offers a well-balanced package. Its Stage V Yanmar engine, quiet enclosure, long autonomy and practical socket configuration make it a dependable choice for standby electricity or regular 13 kVA prime power.
* at 100% prime rated load
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