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Engine platform economics for fleets that need more than one set

Buyers who install several sets — a rental fleet, a chain of workshops, a rural electrification programme — run into a cost problem that a single-site buyer never sees. The purchase price is only the first invoice; the second and third are spares and service labour, and they arrive for years. A Shanghai Diesel Engine (SDEC) platform changes that arithmetic, because consumables and common wear parts are stocked widely rather than sitting at the end of a long lead time.

We build sets on this platform from a modest workshop unit up to a large industrial machine, keeping the control and protection concept consistent across the range so one electrician can service the whole fleet.

Engine platformSDEC series, water-cooled industrial diesel
Usual output window20 kW to 500 kW in this series
Frequency and speed50 Hz at 1500 rpm; 60 Hz at 1800 rpm confirmed per order
Build formsOpen skid or sound-attenuated canopy
ControlManual start or automatic start with ATS interface

Specification sheet for a three-phase SDEC set

Item	Configuration
Genset type	Diesel generator set powered by an SDEC industrial engine
Engine	SDEC series, water-cooled, four-stroke; model matched to the rating
Output window	20 kW to 500 kW; the final rating is fixed by the selected engine model and alternator frame
Frequency and rated speed	50 Hz at 1500 rpm; 60 Hz at 1800 rpm on request
Voltage and phase	400/230 V, 3-phase, 4-wire; other three-phase voltages including 440 V to order
Power factor	0.8 lagging
Alternator	Brushless, single-bearing, self-excited; make selected per configuration
Control panel	Manual or automatic start panel with ATS interface; panel model matched to the rating
Fuel tank	Base-frame integral tank; capacity set by canopy size and required running hours
Enclosure	Open skid or canopy with lockable doors, lifting points and exhaust outlet
Sound level	Canopy units are commonly specified in the 65 to 75 dB(A) range at 7 m; confirm against the selected canopy
Dimensions and weight	Confirmed per model on the quotation
Packing	Strong wooden case with waterproof cloth
Typical duty	Workshops, small factories, rental fleets, pumping stations, standby for rural sites

Large SDEC series diesel generator set on an open base frame with radiator and control cabinet — An open-frame set from this series. The radiator, air cleaner and control cabinet are mounted on the same base frame, so the unit can be positioned inside a plant room without a separate canopy.

What a fleet buyer gets from this platform

One service routine across the range. Because the same control and protection logic is used on the small and the large sets, maintenance procedures can be written once and applied to the whole fleet.
Parts that travel shorter distances. Common SDEC filters and wear parts are stocked in many markets, which shortens the wait when a set is down.
Ratings that step up with the site. The series covers a wide window, so a customer who outgrows a 40 kVA unit can be supplied with the next frame without changing supplier or panel concept.
Open frame or canopy for the same machine. A plant-room installation takes the open skid; a boundary installation takes the canopy, with the same spares list either way.
Packing designed for one-off export shipments. Individual sets are cased with waterproof cloth, which protects a unit travelling as break-bulk cargo.
Panel specified around how the site is operated. Attended sites get a simple manual panel; unattended sites get automatic start with an ATS interface and dry contacts.

About the plant that assembles these sets

Jiangsu Qingzhiteng Power Equipment Co., Ltd is based in Yangzhou, Jiangsu and manufactures diesel as well as gas generator sets. The inland diesel programme spans 3 kVA to 3000 kVA and the marine programme 12 kW to 500 kW; sets with ATS, parallel operation, low-noise canopies and remote monitoring are produced in the same works. The company exports to more than 80 countries on five continents.

How an SDEC set is built and checked

Engine and alternator arrive and are verified against the order configuration.
The two units are coupled on the base frame and alignment is adjusted.
Fuel, coolant and exhaust circuits are assembled and leak-tested.
Control panel wiring is completed and continuity-checked against the panel drawing.
The set is run on the test bench and governor, voltage and protection settings are verified.
Canopy, doors and paint are finished where the order includes an enclosure.
The unit is cased with waterproof cloth and the packing list is issued with the shipping documents.

Comparable duties we have served

Rental fleet, Africa

An operator running several mid-size units wanted sets that a local mechanic could service without waiting for imported filters. Sets were supplied on this platform with a consistent manual panel across the fleet.

Pumping station, Southeast Asia

A station with a three-phase motor load needed a set rated above the connected kW so the pump could start. The frame and alternator were selected from the motor starting current supplied by the buyer.

Small factory, Middle East

A production workshop wanted standby power for lighting and machine tools in a plant room. An open-frame set was supplied because the room already provided acoustic separation.

Frequently asked questions on this platform

Which output should I order if my load is around 40 kW?

Send the equipment list with the rated kW of each item and the starting method of the largest motor. The set is then sized on the starting current rather than on the running total alone.

Is 400/230 V available, or can I have 440 V?

400/230 V, three-phase, four-wire at 50 Hz is the standard build for this platform. Other three-phase voltages such as 440 V are produced on request; state the destination country and the supply arrangement when you enquire.

Can two sets be run together?

Yes, when they are ordered with parallel operation and synchronising control. Say so at the enquiry stage, because the panel and the protection settings differ from a single-set installation.

How often does the set need servicing?

Intervals follow the engine's own maintenance schedule for the fuel, lubricant and operating conditions on your site. We supply the schedule that matches the engine model ordered; it is not a figure we can fix in advance for every site.

What are your MOQ, lead time and payment terms?

These depend on the rating, quantity, destination and payment method, so they are stated in the quotation. Provide the quantity and the port and we will quote on that basis.

Sets built on this platform sit between the smaller Yangdong series and the Yuchai-powered range; see the full product range for other power options.

Tell us the site and the duty cycle

Send the connected load and the starting method of the largest motor, the required voltage, phase and frequency, whether the set is for standby or continuous duty, the quantity and the destination port. That is enough to select the frame and quote.

Request a SDEC series quotation

Keywords used on this page: generator 40 kva price, 50 kva 3 phase generator price, genset 50kva, 75kva generator for sale

12:T2f16,

Engine platform economics for fleets that need more than one set

Engine platformSDEC series, water-cooled industrial diesel
Usual output window20 kW to 500 kW in this series
Frequency and speed50 Hz at 1500 rpm; 60 Hz at 1800 rpm confirmed per order
Build formsOpen skid or sound-attenuated canopy
ControlManual start or automatic start with ATS interface

Specification sheet for a three-phase SDEC set

Item	Configuration
Genset type	Diesel generator set powered by an SDEC industrial engine
Engine	SDEC series, water-cooled, four-stroke; model matched to the rating
Output window	20 kW to 500 kW; the final rating is fixed by the selected engine model and alternator frame
Frequency and rated speed	50 Hz at 1500 rpm; 60 Hz at 1800 rpm on request
Voltage and phase	400/230 V, 3-phase, 4-wire; other three-phase voltages including 440 V to order
Power factor	0.8 lagging
Alternator	Brushless, single-bearing, self-excited; make selected per configuration
Control panel	Manual or automatic start panel with ATS interface; panel model matched to the rating
Fuel tank	Base-frame integral tank; capacity set by canopy size and required running hours
Enclosure	Open skid or canopy with lockable doors, lifting points and exhaust outlet
Sound level	Canopy units are commonly specified in the 65 to 75 dB(A) range at 7 m; confirm against the selected canopy
Dimensions and weight	Confirmed per model on the quotation
Packing	Strong wooden case with waterproof cloth
Typical duty	Workshops, small factories, rental fleets, pumping stations, standby for rural sites

SDEC open type generator, front view with control panel on the left — An open-frame set from this series. The radiator, air cleaner and control cabinet are mounted on the same base frame, so the unit can be positioned inside a plant room without a separate canopy.

What a fleet buyer gets from this platform

One service routine across the range. Because the same control and protection logic is used on the small and the large sets, maintenance procedures can be written once and applied to the whole fleet.
Parts that travel shorter distances. Common SDEC filters and wear parts are stocked in many markets, which shortens the wait when a set is down.
Ratings that step up with the site. The series covers a wide window, so a customer who outgrows a 40 kVA unit can be supplied with the next frame without changing supplier or panel concept.
Open frame or canopy for the same machine. A plant-room installation takes the open skid; a boundary installation takes the canopy, with the same spares list either way.
Packing designed for one-off export shipments. Individual sets are cased with waterproof cloth, which protects a unit travelling as break-bulk cargo.
Panel specified around how the site is operated. Attended sites get a simple manual panel; unattended sites get automatic start with an ATS interface and dry contacts.

About the plant that assembles these sets

How an SDEC set is built and checked

Engine and alternator arrive and are verified against the order configuration.
The two units are coupled on the base frame and alignment is adjusted.
Fuel, coolant and exhaust circuits are assembled and leak-tested.
Control panel wiring is completed and continuity-checked against the panel drawing.
The set is run on the test bench and governor, voltage and protection settings are verified.
Canopy, doors and paint are finished where the order includes an enclosure.
The unit is cased with waterproof cloth and the packing list is issued with the shipping documents.

Comparable duties we have served

Rental fleet, Africa

Pumping station, Southeast Asia

Small factory, Middle East

A production workshop wanted standby power for lighting and machine tools in a plant room. An open-frame set was supplied because the room already provided acoustic separation.

Frequently asked questions on this platform

Which output should I order if my load is around 40 kW?

Send the equipment list with the rated kW of each item and the starting method of the largest motor. The set is then sized on the starting current rather than on the running total alone.

Is 400/230 V available, or can I have 440 V?

Can two sets be run together?

Yes, when they are ordered with parallel operation and synchronising control. Say so at the enquiry stage, because the panel and the protection settings differ from a single-set installation.

How often does the set need servicing?

What are your MOQ, lead time and payment terms?

These depend on the rating, quantity, destination and payment method, so they are stated in the quotation. Provide the quantity and the port and we will quote on that basis.

Sets built on this platform sit between the smaller Yangdong series and the Yuchai-powered range; see the full product range for other power options.

Tell us the site and the duty cycle

Request a SDEC series quotation

Keywords used on this page: generator 40 kva price, 50 kva 3 phase generator price, genset 50kva, 75kva generator for sale

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