FAQ - Diesel Generator Sets
Q: Are you a factory or a trading company?
We are a manufacturer with our own export team. All diesel generator sets are assembled and tested in our own factory,
while our in-house trading department handles international inquiries, contracts, and shipping directly.
๐ญ How We Operate
Production: Generator bodies, control panels, canopy fabrication, and load testing are done in-house
Engine sourcing: We install genuine Cummins, Perkins, Yuchai, Weichai, etc., with original brand warranty
Export: Our own foreign trade team manages documentation, inspection, and logistics โ no external agent
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What This Means for You
Factory-direct pricing โ no trader margin added
Strict QC โ every genset passes 2-hour no-load + load test before shipment
Faster response โ engineering and sales under one roof
OEM/ODM supported โ voltage, frequency, canopy, ATS, parallel system customizable
๐ We export directly to Asia, Africa, the Middle East, South America, and Europe.
โ
In short: We are a direct factory with our own export department โ you deal with the maker, not a middleman.
Better price, better control, better after-sales.
Q: Can you provide on-site installation and commissioning?
Yes, we can provide on-site installation and commissioning for most of our equipment and system products,
subject to project scope, destination country, and mutual agreement in the contract.
๐ง How We Handle It
For complex machinery, production lines, or electrical systems, we can send engineers to your site
to handle unloading guidance, mechanical/electrical installation, alignment, wiring check,
and first-run commissioning.
Scope typically included:
Installation supervision
Mechanical & electrical connection guidance
Calibration and parameter setting
Trial run and performance testing
Operator training (basic operation & daily maintenance)
Scope typically excluded (unless quoted separately):
Civil works, foundation construction, crane rental
Local labor, scaffolding, power supply beyond equipment interface
Long-term resident engineers (available on monthly basis if required)
โ๏ธ Logistics & Cost
Engineer dispatch is usually not included in EXW/FOB price by default. It can be quoted as a separate line item:
Supervision & Commissioning Service, covering:
Round-trip air tickets
Visa & local transportation
Accommodation (or client provides)
Daily service fee (USD/day)
For DDP / turnkey projects, on-site service can be bundled into the total project price.
For simpler machines, we may provide video guidance + detailed manuals + 3D installation videos instead,
which is faster and cost-free.
๐ Regional Note
We have experience dispatching engineers to Asia, the Middle East, Africa, and South America.
For regions requiring work permits or security approvals, please allow a lead time of 2โ4 weeks
for visa and travel arrangements.
๐ก When requesting a quotation, please let us know:
Machine model / project scale
Destination country & site readiness (power, foundation, local labor)
Whether you prefer full on-site service or remote guidance only
โ
In short: Yes, on-site installation & commissioning is available for qualified equipment.
It is optional and quotable separately under FOB/CIF, or bundled into turnkey/DDP projects upon request.
Q: How about the fuel consumption of your diesel generator sets?
The fuel consumption of our diesel generator sets depends on the rated power, engine brand, load rate,
and whether the unit is prime or standby rated. As a general reference for most of our
Cummins, Perkins, Yuchai, or Weichai powered generators, typical consumption at full load
ranges from 190 g/kWh to 215 g/kWh (heat value based), which translates roughly to
0.25 โ 0.32 L/kWยทh at 100% load.
โฝ Reference Table (Approximate, Diesel Density ~0.84 kg/L)
10 kW set: ~2.6 โ 3.2 L/h at full load
50 kW set: ~13 โ 16 L/h at full load
100 kW set: ~25 โ 31 L/h at full load
200 kW set: ~50 โ 62 L/h at full load
500 kW set: ~125 โ 155 L/h at full load
1000 kW set: ~250 โ 310 L/h at full load
๐ Load-Based Consumption Curve
Diesel gensets are not linear; actual burn rate by load:
25% load: ~0.30 L/kWยทh equivalent (high specific consumption)
50% load: ~0.27 L/kWยทh
75% load: ~0.25 L/kWยทh
100% load: ~0.25 โ 0.32 L/kWยทh depending on engine
โ Most economical operating zone is 70% โ 80% of rated power.
๐ง What Affects Consumption
Engine tech: Electronic injection
Altitude & ambient temp: High altitude or 40ยฐC reduces air density, raises fuel use
Maintenance status: Clogged filters, bad injectors increase burn by 5%โ15%
Fuel quality: Low calorific value diesel raises L/h
Governor type: Electronic governor stabilizes consumption better
๐ How We Quote It
Each quotation includes a Fuel Consumption Sheet stating:
Genset model & prime/standby power
L/h at 25% / 50% / 75% / 100% load
Tank capacity & estimated run time at full load
Optional enlarged base tank or external daily tank sizing
๐ก To get an accurate number, tell us:
Required kW / kVA (prime or standby?)
Expected average load percentage in your application
Daily running hours (continuous / emergency only)
Diesel grade used locally
โ
In short: Fuel use is model-specific, but you can expect
about 0.25โ0.32 liters per kWh at full load, lower per-kWh at 70โ80% load.
We provide a load-based consumption table with every offer so you can calculate running cost before purchase.
Q: How long is the warranty for your diesel generator sets?
Our standard warranty for diesel generator sets is 12 months or 1000 running hours,
whichever comes first, counted from the date of shipment or commissioning.
๐ Warranty Breakdown by Component
Whole generator set (frame, canopy, ATS, control panel): 12 months / 1000 running hours
Engine (Cummins / Perkins / Yuchai / Weichai etc.): Follows original engine manufacturer warranty โ usually 12โ24 months or up to 2000 running hours
Alternator (Stamford / Marathon / Leroy-Somer / Mecc Alte etc.): 12โ24 months depending on brand policy
Consumables (oil, fuel filters, air filters, belts, batteries): Not covered
โ
What Is Covered
Manufacturing defects in material and workmanship
Non-human-caused failures of major components
Free replacement parts (EXW our factory or FOB loading port)
Remote technical support and troubleshooting during warranty period
โ Not Covered
Damage caused by improper installation, wrong voltage, overload, or lack of maintenance
Wear-and-tear parts and routine consumables
Issues caused by using non-recommended diesel grade or poor site conditions
๐ Extended Warranty Options
For government tenders, mining, or continuous-prime projects, we can offer:
18-month / 1500-hour warranty
24-month / 2000-hour warranty
On-site spare parts kit bundled with extended service contract
๐ How To Claim
Provide genset serial number + photos/videos of the issue
Our engineer reviews within 24โ48 hours
Free parts sent by DHL/FedEx, or local agent support if available in your country
๐ Regional Note: For markets with local service partners (e.g., Nigeria, Kenya, UAE, Indonesia, Peru),
warranty claims can often be handled faster through regional agents.
๐ก When requesting a quote, tell us:
Prime or standby application?
Expected annual running hours
Whether you want standard or extended warranty included in the price
โ
In short: Default warranty is 12 months or 1000 running hours for the whole set,
with engine/alternator following original brand policy. Extended packages are available. We focus on fast claim response, not just long paper warranty.
Q: Do you provide after-sales service for your products?
Yes, we provide comprehensive after-sales service for all diesel generator sets and supporting power equipment.
Our support covers both the warranty period and long-term post-warranty operation, ensuring your equipment runs reliably throughout its lifecycle.
๐ Core After-Sales Services
Remote technical support: 24-hour response via Email, WhatsApp, WeChat, or video call for fault diagnosis and operational guidance
Spare parts supply: Original and OEM-quality parts for engines, alternators, controllers (Deep Sea, SmartGen), ATS, fuel systems, and cooling systems
Warranty execution: Fast processing of warranty claims with free replacement parts for quality-related issues
Commissioning follow-up: Optional post-installation inspection after the first 100 running hours or 1 month of operation
Operator training: On-site or remote training covering daily maintenance, fault code interpretation, safe start/stop procedures, and basic troubleshooting
Documentation package: English operation manual, electrical schematic diagram, spare parts catalog, factory load test report, and CE/ISO certificates included with every shipment
๐ Global Service Network
Local agent support: In key markets such as Nigeria, Kenya, UAE, Saudi Arabia, Indonesia, Thailand, Peru, and Chile, we coordinate with local service partners for faster on-site response
Remote-first model: For other regions, our factory engineers provide real-time remote guidance, minimizing downtime while parts are in transit
Annual maintenance contracts (AMC): Available for industrial plants, data centers, rental companies, and infrastructure projects requiring planned preventive maintenance
๐ฆ Recommended First-Year Spare Parts Kit
To minimize unexpected downtime, we recommend ordering a first-year spare parts kit alongside your genset, typically including:
Oil filter, fuel filter, primary fuel filter, air filter
Fan belt, V-belts, tensioner
Common sensors (coolant temperature, oil pressure, speed sensor)
Fuses, relays, and AVR (for brushless alternators)
Critical seals and gaskets
โฑ Response & Delivery Commitments
Pre-sales & order support: Same-day reply
Technical inquiry after delivery: Within 24 hours (working days)
Urgent breakdown support (prime power users): Initial remote response within 12 hours
Spare parts dispatch: Within 3 working days after claim approval, shipped via DHL/FedEx/UPS (typical delivery: 3โ5 days globally)
๐ก How to Get Faster Support
Please keep the following information ready when contacting us:
Genset model and serial number
Controller model and displayed fault codes (with photo if possible)
Operating environment (altitude, ambient temperature, load profile)
Brief description of symptoms and recent maintenance history
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In short: Yes โ we deliver end-to-end after-sales service: remote troubleshooting, global spare parts supply, warranty handling, optional local agent coordination, and long-term maintenance solutions.
Our commitment is simple: we donโt just sell generators; we keep them running.
Q: Can I have the instruction manual and wiring diagram?
Yes. Every diesel generator set we ship comes with a full English documentation package, including the
operation & instruction manual and the complete wiring diagram set, provided in both
printed and digital (PDF) formats. For engineered projects we can also supply editable
DWG / EPLAN files on request.
๐ Instruction Manual Includes
Product overview, rated parameters, and nameplate explanation (kW/kVA, voltage, frequency, power factor)
Start-up / shut-down procedures for manual, auto, and ATS modes
Control panel guide (Deep Sea / SmartGen / Harsen etc.): button functions, alarm codes, parameter setting
Daily / weekly / monthly maintenance checklist (oil, filters, coolant, battery, belt inspection)
Troubleshooting table with fault code list and corrective actions
Safety warnings, grounding requirement, and emergency stop procedure
๐ Wiring Diagram Set Includes
Main AC output diagram (generator terminals U/V/W/N/PE โ ATS / distribution panel)
Control panel internal wiring diagram
ATS control wiring diagram (when equipped)
Battery, starter, and alternator excitation wiring
Sensor wiring (oil pressure, water temperature, speed, fuel level)
Canopy lights / sockets / optional remote start wiring (for silent & container types)
๐ Delivery Formats
Printed: 1โ2 bound copies placed in the control box or spare-parts crate
PDF: sent by email / WeTransfer / WhatsApp before or right after shipment
CAD version (DWG / EPLAN): available on request for EPC / consultant teams doing site integration
๐ Language & Standard
Default: English
Spanish / Arabic / French / Russian available on request
Diagrams follow IEC / NEC marking conventions with clear terminal numbers and phase colors
โ ๏ธ Customization Note
If your unit is built to a non-standard spec (e.g. 480V/60Hz, 415V/50Hz, single-phase derivative, parallel system, synchronized ATS),
the manual and diagram shipped will match your exact order configuration โ not a generic model booklet.
๐ก Site Tip
Before connecting to the grid or ATS, always cross-check the diagram against the actual controller label and terminal board.
You can send us a photo of the nameplate + controller model and weโll confirm the matching page of the diagram.
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In short: Yes โ you get a model-specific English instruction manual + full wiring diagrams (printed + PDF)
with every genset, and CAD source files if your project needs them.
Q: How long is the delivery lead time? Is rush order available?
Our standard production lead time for diesel generator sets is 20โ35 working days after receipt of deposit and order confirmation,
depending on power range, engine brand, and customization level. Shipping time is additional, based on Incoterms and destination.
๐ฆ Standard Lead Time Reference
Stock / hot-selling models (e.g. 50kW / 100kW / 200kW silent type with Cummins/Yuchai): 7โ12 working days dispatch
Standard open/silent type, 10โ500kW: 20โ25 working days
Containerized / trailer / parallel system / ATS + synchronization: 30โ45 working days
Special specs (480V/60Hz, high-voltage 6.6kV, explosion-proof, mining package): 35โ55 working days
Sea freight (FOB/CIF): 15โ35 days depending on destination
๐ Rush Order / Expedited Production
Yes, rush orders are available subject to workshop schedule and component inventory.
Express slot: We can shorten standard production to 12โ15 working days for 1โ3 standard units
Stock-engine priority: If we have your engine (Cummins/Perkins/Yuchai/Weichai) and alternator (Stamford/Mecc Alte) in stock, silent canopy build + wiring + test can be done in ~10 working days
Rush fee: Normally 3%โ8% of order value, confirmed case by case
Pre-built semi-finished units: We keep bare frames, canopies, and control panels in process to cut 5โ7 days
โ ๏ธ What Rush Order Does NOT Cover
Ocean transit time (cannot be compressed beyond express freight options)
Third-party inspection (SGS/BV) if their engineer availability is tight โ book early
Custom certifications (CE for special markets, SASO, SONCAP) if not pre-prepared
๐ How to Get the Real Date
When you inquire, please tell us:
Exact model / kW-kVA / prime or standby
Voltage-frequency-phase (380V/50Hz or 480V/60Hz etc.)
With or without ATS, parallel, trailer, container
Destination port (for total landed time)
Whether you accept stock-engine substitution to save time
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In short: Standard lead time is 20โ35 working days after deposit; stock units ship in 7โ12 days.
Rush orders can be compressed to 10โ15 working days with a small expedite fee, subject to parts availability.
We always give a written estimated dispatch date in the PI โ no vague "about one month" promises.
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This article is for informational purposes only. Specifications and availability may vary by region.
Please contact NovArk Power for a confirmed quotation tailored to your project requirements.