Backup power that saves the crop
Keeps aerators, blowers and pumps running through an outage — without aeration, dissolved oxygen crashes and a whole pond can be lost in hours.
Electricity Generator
A diesel genset for sale sized for fish-farm backup keeps aerators, blowers and pumps running when the grid fails. SIGMA supplies diesel generators for sale as new units and can source used diesel generators for sale — so whether you need a fresh build or a budget-friendly second hand diesel generator, we quote both. An automatic transfer switch (ATS) starts the genset within seconds of an outage, so dissolved oxygen never crashes and the crop stays safe.
- Power5–100+ kVA
- StartATS auto transfer (seconds)
- TypeSilent canopy / open frame
- PhaseSingle / three phase
ISO 9001 CE OEM / ODM
15+ years in aquaculture engineering · Trusted by Japfa Group, Japan Nissui & Tropo Farms · Shipped worldwide in one container
Product Description
3 phase 40kw 50kva diesel generator price water cooling supper silent diesel generator set
- Ours cooperate with famous diesel engine – USA brand, Deutz, Lovol/UK brand, Weichai.
- Brushless alternator — Stamford, Leroy Somer, Marathon, JET.
- High-quality steel is thickness — 2MM to 4MM
- High-density sound-absorbing material — sound insulation, fireproofing
- New design of turn-back type for air inflow & air outlet which can reduce the noise and advance engine efficiency.
Video of Product
Specifications
Models & configuration
Power steps and configurations are the common industry range — final genset ratings are confirmed by SIGMA's production line per order.
| Model | Capacity | Typical use | Core configuration |
|---|---|---|---|
| SIGMA-GEN-5 | 5 kVA | Small farm / single aerator bank | Single-phase · manual / electric start |
| SIGMA-GEN-10 | 10 kVA | Small–mid farms | Single / three phase · electric start / ATS |
| SIGMA-GEN-20 | 20 kVA | Standard farms | Three-phase · ATS |
| SIGMA-GEN-30 | 30 kVA | Mid-size farms | Three-phase · ATS · silent canopy |
| SIGMA-GEN-50 | 50 kVA | Large farms | Three-phase · ATS · silent canopy |
| SIGMA-GEN-100+ | 100 kVA and up | Industrial / multi-tank farms | Three-phase · ATS · silent canopy · remote monitoring |
| Type | Diesel generator set (standby / prime duty) |
|---|---|
| Power range | 5–100+ kVA, sized to farm load (5 / 10 / 20 / 30 / 50 kVA common) |
| Phase | Single phase / three phase |
| Start | Manual / electric start / ATS automatic transfer — starts within seconds of grid failure |
| Enclosure | Silent canopy or open frame; weatherproof housing for outdoor siting near ponds |
| Fuel | Diesel — long unattended runs |
| Options | ATS, extended fuel tank, noise-reduction canopy, remote monitoring |
System composition
ATS automatic changeover
With an automatic transfer switch the genset starts and takes over within seconds of grid failure, then shuts down when mains returns.
Silent or open frame
Canopy models keep noise down near the ponds; open-frame models are the economical choice.
Full power range, single or three phase
From 5 kVA for a small farm's essential load up to 100+ kVA for large multi-pond operations.
Long unattended diesel running
Reliable diesel engines, extended-tank options and weatherproof enclosures for outdoor duty.
One manufacturer for power and equipment
Produced in our factory alongside the aeration, pump and RAS line — buy backup power together with the equipment it protects.
Application
- Standby power for intensive fish and shrimp farms — protecting aeration and circulation
- Emergency supply for RAS and biofloc high-density systems, where an outage is most lethal
- Prime power for remote farm sites without a stable grid
- Protecting critical hatchery loads
Video
Electricity Generator
FAQ
Frequently asked questions
Why does a fish farm need a backup generator?
For an intensive fish or shrimp farm a power cut is an emergency — without aeration and circulation, dissolved oxygen crashes and a whole pond can be lost in hours. An automatic standby generator with ATS keeps the critical equipment running the moment the grid drops, with no one needing to be on site to start it.
What does an ATS (automatic transfer switch) do?
With an ATS the generator starts and takes over within seconds of a grid failure, then shuts down when mains power returns.
How is the generator sized for a farm?
It is sized to carry the farm's essential load — aerators, blowers and pumps — rated by kVA/kW, in common sizes from about 5 to 100+ kVA, single- or three-phase. As a commercial diesel generator manufacturer and one of the diesel generator suppliers already stocking matched pump and aeration equipment, SIGMA can size the whole electrical load in one quote.
Is a silent generator available?
Yes — it is offered in a silent (canopy) or open frame, with weatherproof enclosures for outdoor siting near the ponds and reliable diesel engines for long unattended runs.
What kVA and kW sizes are available — including 10 kVA, 25 kVA, 50 kW and 100 kVA options?
Standard power steps run from 5 kVA for a single aerator bank up through 10 kVA, 20 kVA, 25 kVA, 30 kVA and 50 kVA to 100 kVA generator sets and beyond for industrial-scale farms. If you need a 50 kW generator for sale or a 100 kVA generator for sale, both fall within our normal production range — final ratings are confirmed per project.
Should I choose a three-phase or single-phase generator?
Most commercial fish and shrimp farms run three-phase motor loads — paddle wheels, roots blowers and submersible pumps. A 3-phase diesel generator for sale is the standard choice; a three phase generator for sale gives you balanced load distribution across all three motor phases and matches the supply most aerators and blowers require. Single-phase units are available for smaller or simpler loads.
Can SIGMA supply used or second-hand diesel generators?
Yes — in addition to new units, we can source used diesel generators for sale and second hand diesel generators for sale that have been serviced and load-tested. Used gensets for sale are a practical option for farms on a tighter budget or where the genset is a secondary backup rather than a primary power source. Contact us with your kVA requirement and we will advise on availability.
Related equipment
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RAS system
Complete recirculating aquaculture (RAS) systems: drum filters, biofilters, oxygen cones, pumps & monitoring. Custom-designed for your species & volume. Manufacturer-direct. Get a quote.
View details →Request a tailored quote
Tell us your species, target density and site — our engineers size the system and reply within one business day.
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