Cummins diesel generator RFQ checks for factory standby projects, covering load list, voltage, frequency, enclosure, ATS boundary, fuel autonomy, and acceptance documents.
What buyers should know first
A factory standby project should start with the real production load, not only the transformer size. List essential motors, compressors, lighting, controls, air systems, pumps, and any loads that must restart after a utility failure. Then separate standby-only loads from loads that may operate during scheduled testing.
In practice
For Cummins-powered options, the commercial discussion usually needs engine platform, alternator, controller, enclosure, tank, voltage, frequency, and ATS scope in one package. Yangzhou Tesla Power Equipment Co., Ltd. can only match the generator set properly when the purchaser states whether the unit is standby, limited prime use, or regular production support.
| Item | What to state in the RFQ | Why it matters |
|---|---|---|
| Load profile | Running kW, starting loads, sequence of large motors | Prevents under-sizing when several motors restart together |
| Electrical standard | Voltage, phase, frequency, neutral arrangement | Keeps alternator and control panel selection aligned with site equipment |
| Duty expectation | Standby, prime, test hours, expected annual run hours | Avoids quoting a package for the wrong operating pattern |
| Transfer boundary | Generator only, ATS included, or synchronizing panel by others | Clarifies responsibility between supplier and electrical contractor |
What to confirm before quotation
- Confirm the largest motor starting method, such as direct-on-line, soft starter, or VFD.
- State whether the generator must accept the full load in one step or after load sequencing.
- Give ambient temperature, altitude, indoor or outdoor location, and ventilation restrictions.
- Ask for a data sheet, general arrangement drawing, wiring diagram, controller model, and test record.
- Confirm whether the enclosure must be open, silent, weather-protected, or containerized.
Common configuration mistakes
- Using connected kVA as the only sizing input when some loads are intermittent.
- Leaving voltage and frequency open until after quotation.
- Requesting ATS without stating current rating, pole arrangement, and utility-generator switching logic.
- Ignoring service clearance around radiator, filters, batteries, and exhaust routing.
Internal references for specification work
Start with the <a href="https://www.tesladieselgeneratorset.com/how-to-size-a-diesel-generator-for-industrial-backup-power/">industrial sizing notes</a>, compare <a href="https://www.tesladieselgeneratorset.com/prime-vs-standby-diesel-generator-ratings/">prime and standby rating terms</a>, and review live product examples such as <a href="https://www.tesladieselgeneratorset.com/products/sound-proof-diesel-generator-set-30kw-60kw-cummins-engine-38kva-50kva-63va-75kva-diesel-generator-with-ats-option/">Sound Proof Diesel Generator Set 30KW 60KW Cummins Engine 38KVA 50KVA 63VA 75KVA Diesel Generator with ATS Option</a>. More related articles are grouped under <a href="https://www.tesladieselgeneratorset.com/category/technical-guides/">Technical Guides</a>.
Documents to request with the offer
- Generator set technical data sheet and alternator data.
- Controller and protection function list.
- Factory test record format before shipment.
- Packing size and weight for export planning.
- Recommended spare parts for the first service period.
Questions purchasers often ask
Is a Cummins diesel generator suitable for factory standby use?
It can be considered when the engine, alternator, controller, enclosure, and duty rating match the factory load profile. The supplier still needs the site load list and starting sequence before confirming a model.
Should the RFQ use kW or kVA?
Use both where possible. kW shows real power demand, while kVA reflects apparent power and power factor. For many generator sets, purchasers use kW for load demand and kVA for alternator/package reference.
What should be checked before adding ATS?
Confirm the utility voltage, generator voltage, current rating, poles, neutral treatment, control signal, installation position, and whether the ATS panel is supplied with the generator or by the local contractor.
Can the supplier quote without a motor list?
A budgetary quotation may be possible, but final sizing is weaker without motor starting data. Large motors, compressors, and pumps can change the generator size more than lighting or office loads.
For an RFQ, prepare the connected load list, operating voltage, frequency, duty rating, enclosure preference, site altitude and ambient temperature, fuel autonomy target, and any transfer switch boundary drawings. Clear inputs help the supplier quote the generator set instead of guessing the project scope.