Latvia – Public tender: 150 kVA prime trailer-mounted sets
A written technical specification (public tender) for 150 kVA prime trailer-mounted sets: we analysed the requirements and selected TRX QZ TA 0175 (Quartz Q6105IZLD, 175 kVA standby / 157.5 kVA prime), answered 14 points in a compliance table and prepared the documents listed below.
- Country
- Latvia
- Application
- Public tender
- Power
- 175 kVA standby / 157.5 kVA prime · 50 Hz
- Quantity
- Series supply (many sets)
- Source of requirements
- Written technical specification
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The request
| Rating | 150 kVA prime |
|---|---|
| Electrical | 400/230 V, 50 Hz, 3-phase, 1500 rpm |
| Site conditions | Max 40 °C, min -30 °C |
| Noise | 75 dB(A) at 7 m |
| Enclosure | Trailer-mounted |
| Fuel tank and autonomy | 290 L tank, 8 h autonomy at 75 % load |
| Engine | Water-cooled, turbocharged; EN 590 fuel; Fuel consumption ≤30 L/h at 75% load; Battery ≥140 Ah; Dry air filter; Start at -20 °C without pre-heater |
| Alternator | PMG or AREP excitation; Full damper winding; Class H; IP23; 3-phase sensing AVR ±0.5%; THD <2% no load / ≤4% load; Alternator frame 200–230 kVA; 47–53 Hz adjustment |
| Controller and communications | GSM + location + history log; Remote start/stop; USB log; Grid-parallel (GPO); Synchronisation/load sharing up to 3 sets; Droop 2–4%; 5 years free monitoring software |
| Standards | ISO 9001:2015; CE; LVD; EMC; 2005/88/EC; 2006/42/EC; IEC 60034-1; ISO 8528-1 |
| Other requirements | 110% overload 1 h in 12 h; handover load test 0-50-100-110%; Negative phase sequence current ≥10% continuous; Stainless or plastic fuel tank; Antifreeze -35 °C, diesel (Webasto-type) heater + 230 V electric heater, 230 V battery charger, manual oil drain pump; 3-compartment canopy, door alarm, LED lighting, external fuel filler; Powerlock distribution, 8×15 m 70 mm² cables; Fire alarm + CO2 extinguisher; Factory noise report (8 points at 7 m) with the bid |
| Emission | EU 2016/1628, at least Stage IIIA |
Our work
Requirement analysis · Model selection and sizing
- 150 kVA PRP required → selected 157.5 kVA prime model
- 110% overload (165 kVA) checked against 175 kVA standby
- Fuel ≤30 L/h at 75% checked: 22.8 L/h (base model)
- 8 h autonomy checked: ≥290 L / 22.8 L/h ≈ 12.7 h
- Standard alternator does not meet 200–230 kVA frame and ±0.5% → upgraded alternator with PMG + MX321
- Stage IIIA minimum → EU Stage V engine version
Point-by-point compliance table
| Item | Required | Our proposal | Assessment |
|---|---|---|---|
| Prime power | 150 kVA prime | 175 kVA standby / 157.5 kVA prime | Complies |
| Frequency and speed | 50 Hz | 50 Hz, 1500 rpm | Complies |
| Fuel tank | 290 L | 265 L base tank | Deviation / to be confirmed |
| Stage IIIA minimum | – | Stage V engine version; certificate to be provided | Complies |
| Alternator 200–230 kVA, PMG, AVR ±0.5% | – | – | With option |
| Fuel tank ≥290 L stainless/plastic | – | Enlarged tank; material to be confirmed | Deviation / to be confirmed |
| O2 trailer ≤3,500 kg | – | Trailer supplier and weight to be confirmed | Deviation / to be confirmed |
| Fuel consumption ≤30 L/h | – | 22.8 L/h at 75% | Complies |
| Noise report 8 points at 7 m with bid | – | Factory test to be performed | Deviation / to be confirmed |
| Negative phase sequence current ≥10% | – | Alternator manufacturer declaration to be provided | Deviation / to be confirmed |
| Grid parallel and EN 50549 protection | – | Controller capable; grid requirements to be confirmed | Deviation / to be confirmed |
| -20 °C start without pre-heater | – | Engine manufacturer confirmation required | Deviation / to be confirmed |
| Cold-climate heaters | – | Cold-climate package | With option |
| Trailer registration, cables, handover load test, 72 h replacement set | – | By bidder; Terex Diesel technical support | Buyer / local scope |
Options identified and priced
- Upgraded alternator frame with PMG + MX321
- Cold-climate package (diesel heater, 230 V heater, charger, oil drain pump)
- Stage V engine version
- Enlarged ≥290 L tank
- O2 trailer
- Spare replacement unit for bidder
Documents prepared · Offer package
- Compliance table
- Compliance table prepared with 129 clauses (90 yes, 9 yes-option, 30 to be confirmed)
Proposed solution
TRX QZ TA 0175
| Standby power | 175 kVA / 140 kW |
|---|---|
| Prime power | 157.5 kVA / 126 kW |
| Voltage · Frequency · Speed | 230/400 V · 50 Hz · 1,500 rpm |
| Engine | Quartz Q6105IZLD · 7.01 L |
| Alternator | Terex TA280-150N · AVR SX460 · IP23/H |
| Fuel consumption · At 75% load | 22.8 L/h |
| Fuel consumption · At 100% load | 30.8 L/h |
| Fuel tank (Canopied (soundproof)) | 265 L |
| Dimensions (L × W × H) (Canopied (soundproof)) | 3,000 × 1,100 × 1,850 mm · 2,450 kg |
| Dimensions (L × W × H) (Open type) | 2,100 × 1,100 × 1,650 mm · 2,110 kg |
Values are taken from the model’s datasheet; the full datasheet and catalogue page are on the model page.
Offered configuration
- Controller: Deep Sea DSE8610 MKII
- Tank enlarged to ≥290 L
- 22.8 L/h at 75% of set prime (base model)
- Cold-climate package as option
- Bunded base inside enclosure
Packing, shipping and export documents
- Sets are secured on the vehicle or in the container; loose parts travel in crates or on pallets.
- Export documents: commercial invoice, packing list, certificate of origin, A.TR movement certificate for EU customs clearance, factory test report.
Customer, tender and site names are withheld; only the country is shown. Prices and commercial terms are not published. Customer documents are not shared; requirements are summarised in our own words.
How we work with your specification
- Send the specification, datasheet form or list of needs (PDF, Excel, Word or a message).
- We reply on the same working day and ask about missing or unclear points.
- We size the power (prime/standby), voltage, frequency, ambient conditions and autonomy, select the model and prepare a point-by-point compliance table. Deviations and options are stated openly.
- We send the package — offer, datasheet, catalogue pages and any forms requested; for standard configurations within 24 hours.