Petbow Cummins B Series Diesel Generator

Petbow Cummins Generators 64 to 119 kVA

Petbow Generating Sets Powered By Cummins Diesel Engines

Circuit Breaker Cubicle
3-pole moulded case circuit breaker with optional shunt trip and auxiliary contacts.

Finish
High gloss green finish.

General
Set of operating and instruction manuals.

Options
Refer distributor for range details.

Panel Standard Specification

Run-stop-remote switch.
Automatic remote starting, 2 wire.
Coolant temperature gauge.
Oil pressure gauge.
DC voltmeter.
Running time meter.
Fault reset switch.
Lamp test switch.
AC voltmeter / ammeter with selector switch.
Dual scale frequency meter / tachometer.
Emergency stop.
Engine monitoring and shutdown for:
- low oil pressure
- high coolant temperature
- over crank
- over speed
- low coolant level
Common external alarms

Optional MONZA Acoustic Enclosure

70 dBA @ 7 metres (average).
4 point lift and skid ends standard.
Central lifting frame optional.
Lockable doors.
Vertical air discharge.
Compact footprint design.

12 Lite Detector Control Panel

Controls generator set start and shutdown.
Automatic remote start.
DC panel lighting.
Panel mounted on vibration isolators.
Analog gauges display performance trends.

Engine

Cummins 4BT3.9G2 and 6BT5.9G2 in-line 4 and 6 cylinder, diesel engines. 50°C radiator. 12 Volt starting, battery charge alternator. Set mounted silencer. Spin-on replaceable element fuel and oil filters. Mechanical governor. (electronic optional). Dry element air filter.

Alternator

Brushless, single bearing, revolving field. 4-pole screen protected drip proof. Class H insulation. Rotor and exciter impregnated with tropical grade insulating polyester resin. Epoxy coated stator winding. Sealed solid state automatic voltage regulator. Optional permanent magnet exciter.

Chassis

Fabricated and welded chassis. Builtin anti-vibration mountings. In-skid fuel tank. Flexible fuel lines.

Technical Data	Generating Sets
Set model	BG-51A	BK-68A	BF-85A
Prime rating"	51 kWe 64kVA	68kWe 85kVA	85kWe 106kVA
Standby rating**	56kWe 70kVA	75kWe 94kVA	95kWe 119kVA
Set output	380/415V 50 Hz	380/415V 50 Hz	380/415V 50 Hz
Engine make	Cummins	Cummins	Cummins
Model	4BT3.9G2	6BT5.9G2	6BT5.9G2
Cylinders	Four	Six	Six
Engine configuration	In-line	In-line	In-line
Governor / class	Mechanical/A1	Mechanical/A1	Mechanical/A1
Aspiration	Turbocharged	Turbocharged	Turbocharged
Bore and stroke	102mm x 120mm	105mm x 120mm	102mm x 120mm
Compression ratio	16.5:1	16.5:1	17.5:1
Cubic capacity	3.92 Litres	5.88 Litres	5.88 Litres
Cranking current @ 0°c	625A	625A	625A
Engine Output-Prime	56 kWm	76 kWm	94 kWm
Nett at flywheel- standby	62 kWm	83 kWm	103 kWm
Max. load acceptance - single steps	40 kWe	54 kWe	65 We
Alternator size (Prime)	UC1224F	UC1274C	UC1274D
Alternator voltage regulation	±1.0°/a	±1.0%	±1.0%
Alternator insulation class	H	H	H
Fuel consumption (Prime) 100% load	15.37 L/hr	19.8 L/hr	24.07 L/hr
Fuel consumption (Standby) 100% load	16.88 L/hr	21.7 L/hr	26.87 L/hr
Lubrication oil consumption	0.5% of fuel consumption	0.5% of fuel consumption	0.5°/a of fuel consumption
Lubrication oil capacity	11 Litres	16 Litres	16 Litres
In-skid fuel tank capacity-open set	210 Litres	220 Litres	220 Litres
Fuel tank capacity - MONZA canopy	450 Litres	600 Litres	600 Litres
Coolant capacity-radiator and engine	19 Litres	25 Litres	25 Litres
Exhaust temp-full load	521 °C	510°C	577°C
Exhaust gas flow-full load prime	0.158M3/s, 569M3/hr	0.2383/s, 842M3/hr	0.283m3/s, 1020M3/hr
Exhaust gas back pressure max	10.2 kPa, 76mm Hg	10.2 kPa, 76mm Hg	10.2 kPa, 76mm Hg
Air flow-radiator (50°C ambient)	2.26m3/s, 8136m3/hr	1.6m3/s, 5760M3/hr	2.1 m3/s, 7560m3/hr
Air flow - engine intake	0.057m3/s, 2053/hr	0.085M3/s, 306M3/hr	0.094m3/s, 338M3/hr
Heat radiated to ambient	15 kW	20 kW	22 kW
Derating factors - temp.	2% per 11 °C above 40°C	2% per 11 °C above 40°C	2% per 11 °C above 40°C
Derating factors - altitude	4% per 300m above 150m	4% per 300m above 1370m	4% per 300m above 150m

1. Data based on engine operating at full working temperatures, at 1500 rpm (50 Hz).
2. The above figures are representative of an engine test only, and cannot be construed as a guarantee by Cummins Engine Co. Ltd. They should therefore be used for guidance only.
3. Generator sets operating in standby applications may require engine coolant heaters - please contact Distributor for details.

* Prime: Continuous running at variable load for unlimited periods with 10% overload available fort hour in any 12 hour period.

** Standby: Continuous running at variable load for duration of emergency.

Environmental conditions for set running ratings 400c ambient, 152.4m above sea level, 60% relative humidity. Voltages: Standard 380-450V.

Compliance Standards: To BS4999/5000 pt 99, VDE 0530, UTE51 000, NEMA MG1-22, CEMA, IEC 34, CSA A22.2, AS1359, BS5514, ISO 2046 and ISO 8528.