HomeFG WilsonFG Wilson P50-3S

FG Wilson P50-3S Generator Set

The FG Wilson P50-3S is a 50 kW (50 kVA) Diesel standby generator set powered by a Perkins 1104A-44TG1 engine. It is available at 220 V and 240/120 V, single-phase, 50 Hz and rated 50 A. It holds about 8 L (2.1 gal) of oil and 13 L (3.4 gal) of coolant, with a maximum ambient rating of 50 °C. Starting uses 1 group-1047 battery at 12 V. The set measures 1925×1120×1361 mm (75.8×44.1×53.6 in), weighs about 1047 kg (2308 lb) and produces 16 dBA at 1 m. An integrated tank holds 219 L (57.9 gal), roughly 57.9 hours of runtime. The same 1104A-44TG1 engine also powers generator sets from AKSA, Lees and Perkins.

50 kW
Standby
4.4 L
Displacement
8.0 L
Oil capacity
3
Document types

How to read your FG Wilson serial & model number →

Typical fuel consumption for 50–55 kW Diesel generators →

Compare with other 50–55 kW Diesel generators →

Service parts for the P50-3S

Grouped by system, with how many of each the parts manual calls for.

Oil system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power50 kW
Standby kVA50
Prime power50 kW
Controller1002T
Oil capacity8.0 L
AlternatorLeroy-Somer LL2014J
Voltage options220 V, 240 V, 240/120 V
PhaseSingle
Rated current50.0 A
Power factor1.0
Circuit breaker3 Pole MCCB A
Battery group1047
Battery voltage12 V
Battery quantity1
Coolant capacity13.0 L
Max ambient50 °C
Dimensions (L×W×H)1925×1120×1361 mm
Dry weight1047 kg
Fuel tank219.0 L
Tank runtime57.9 hr

Engine

Perkins 1104A-44TG1
Oil capacity8.0 L
Coolant capacity13.0 L
Displacement4.4 L
AspirationTurbocharged
Rated speed1500 rpm

Maintenance & consumables

for the Perkins 1104A-44TG1
ItemSpecCapacityPart #Interval
Air filterReplaceable Element1500 hr
Fuel filterEcoplus fuel filter1500 hr
Oil filterSpin-On, Full Flow9011031500 hr Amazon $41.50 eBay $39.01 KuduParts $25.00
Battery12/Negativo1500 hr
BeltElemento sostituibile1500 hr
CoolantReplaceable Element1500 hr
Coolant filterElemento sostituibile500 hr
Oil15W40 to API CG48.0 litres800 hr
Spark plugElemento sostituibile1500 hr

Compatible filters for the Perkins 1104A-44TG1 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Donaldson P778972 Donaldson P780012 Wix 46818 Wix 46829

Common questions

How many kW is the FG Wilson P50-3S?

The FG Wilson P50-3S is rated 50 kW standby (50.0 kVA).

What engine is in the FG Wilson P50-3S?

The FG Wilson P50-3S is powered by the Perkins 1104A-44TG1 engine.

What fuel does the FG Wilson P50-3S use?

The FG Wilson P50-3S runs on Diesel.

What is the oil capacity of the FG Wilson P50-3S?

The Perkins 1104A-44TG1 engine in the FG Wilson P50-3S has an oil capacity of 8.0 liters.

What alternator comes on the FG Wilson P50-3S?

The FG Wilson P50-3S uses a Leroy-Somer LL2014J alternator.

What oil filter does the FG Wilson P50-3S use?

The FG Wilson P50-3S uses oil filter part number 901103.

What air filter fits the FG Wilson P50-3S?

The FG Wilson P50-3S uses air filter part numbers Donaldson P778972, Donaldson P780012.

Fuel consumption

RatingLoadL/hgal/h
Prime50%7.42.0
Prime75%10.12.7
Prime100%13.43.5
Standby50%7.92.1
Standby75%11.12.9
Standby100%15.14.0

Available documents

Spec sheet — NEW Product Rating(ES)(0213) (FG Wilson)Spec sheet — P50-3S(4PP)GB(1113) (FG Wilson)Reference — 26-220 kVA Enclosure(GB)(1212) (FG Wilson)Reference — P50-3S-(4PP)GB(0810) (FG Wilson)Parts manual — P50-3S(4PP)GB(0211) (FG Wilson)
Full service, cheapest listings

Priced items from this model's own parts manual.

Oil filter 901103$39.01
1 priced item$39.01