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How to Check a Diesel Generator Protection Test Report Before Shipment

Check a diesel generator protection report against the ordered set, from low oil pressure to overload. See two Kenya order photos and the records to request.

If your inspection report says “all protections OK”, ask for the record behind one entry. For low oil pressure, I would want to see which set was tested, what the controller was set to do, and what actually happened. Once those details line up, the buyer and the workshop can discuss the same result before the truck collects the machine.

What would I ask the technician to record?

  • What happened on low oil pressure? The oil-pressure input used, its units, the approved warning or shutdown setting, any applicable delay, and the action the technician observed.
  • What happened on high coolant temperature? The configured temperature and delay for each applicable stage. Where the build has both a warning and a shutdown, record each outcome separately.
  • What happened on overspeed? The speed setting in rpm, how the qualified technician verified the function under the approved procedure, and the resulting event and engine response.
  • What does “overload” mean on this set? Identify the protection device and quantity it monitors, such as controller kW or breaker current in amperes. Record the delay and the observed action, including whether the breaker opened or the engine stopped.

The fitted equipment determines which rows apply. For example, the DSE7320 MKII instructions list separate configuration fields for oil pressure, coolant temperature, overspeed and kW overload. The entries in a controller manual describe available settings. The approved settings for your particular set belong on its own test sheet. Have the supplier’s qualified technician use the approved procedure for that equipment. Deep Sea Electronics installation instructions, page 2

What do these two Kenya order photos actually show?

On a Kenya order for one new 37.5 kVA / 30 kW prime set with a Cummins 4BT3.9-G2 engine, the buyer asked for a built-in automatic transfer switch (ATS). The workshop photos let us point to the enclosure and the control position while discussing that requirement. Kenya order record

Kenya order, before dispatch in China. The closed doors show the enclosure supplied for this 37.5 kVA set.
Kenya order, before dispatch in China. The closed doors show the enclosure supplied for this 37.5 kVA set.
The same order, with the control door open. The controller is above the ATS operating position. The photograph records the layout.
The same order, with the control door open. The controller is above the ATS operating position. The photograph records the layout.

On 1 December 2025 the seller described a video sent to the buyer as a mains/generator changeover test. That addresses the ATS question. To sign off an overspeed shutdown on that unit, I would still ask for its protection-test entry. Neither photo gives a trip speed, a time delay or a shutdown result. The DSE manual above is a separate technical example.

What if the supplier sends only a panel photo or a “pass” tick?

Send back a request the technician can answer in one row.

Set or build ID ___ · Controller model ___ · Test date ___ · Function ___ · Approved setting and delay ___ · Test method/reference ___ · Observed alarm, trip or shutdown ___ · Record or event reference ___ · Technician ___

Match the build ID to your order. Compare the expected action with the observed one, and ask for the event entry or signed test record where available. If a function was outside the agreed scope, mark it “not tested” and decide with the supplier whether it needs a witnessed check before collection. For any failed check, keep the original result with the corrective action and dated retest.

02 / Technical resources

Prepare these details before an inquiry

Equipment & loads

Equipment, quantities, nameplate photos, simultaneous loads and starting methods.

Site & operation

Installation town, voltage, frequency, phases, operating hours and environment.

Supply & delivery

Silent / open type, ATS, quantity, destination and required delivery date.

03 / Start an inquiry

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Choosing a Diesel Generator for an African Project: Loads, kVA and Site Conditions →Shipping a Diesel Generator to Africa: What to Confirm with Your China Forwarder →Generator After-Sales Support in Africa: Warranty, Spare Parts and Handover →How to Choose a 100 kVA Weichai-Powered Diesel Generator: 80 kW Buying Guide →100 kVA Diesel Generator Fuel Consumption per Hour →50 Hz vs 60 Hz: what should you confirm before ordering? →Automatic transfer switches: what happens during an outage? →How to Check Prime and Standby kVA on a Generator Quotation →How to Compare Diesel Generator Quotations from China: A Checklist for Importers →Diesel Generator Imports to Kenya: What Buyers Confirm Before Ordering →Buying Diesel Generators for Resale: Planning Your First Order from China →Diesel Generator Factory Tests: What to Check Before Shipment →Generator voltage and phases: checking 400 V, 230 V and your loads →kW and kVA: how to compare generator power →Motor starting loads: why running power is not enough →Prime vs standby power: which rating should you use? →Replacing a Diesel Generator: What to Check Before Reusing an Existing ATS →Buying a Used Diesel Generator from China: Inspection and Risk Checks →