1,205 units for base stations
- Scope
- enclosures 65 dBA at 7 m, door sensor, tank with level sensor
- Result
- remote monitoring of the entire fleet
Solution
Gensets for base stations
A 48 V DC genset charges the battery and feeds the site directly, without rectifiers. A variable-speed engine reduces consumption at low load; service is every 1,000 hours.
Key figures
40-60 %
fuel savings of a 48 V DC genset
manufacturer data1,000 h
between services with an extended oil capacity
manufacturer data1,205
base station units for one operator in Vietnam
manufacturer dataWhy a conventional genset is inefficient at a base station
Low load
The site draws 2-5 kW while an AC genset is rated 10-20 kVA: it runs at low load and wastes fuel.
Double conversion
The genset AC output is rectified back to 48 V: extra losses and equipment.
Frequent site visits
Refuelling and service every 250-500 hours at a remote site.
Fuel theft
Without fuel level monitoring, a shortfall is only found at the next visit.
Solution
How it works
A 48 V DC genset paired with storage and solar: the genset only charges the battery and runs at optimal load.
- DaySolar panels feed the site and charge the battery.
- Night or overcastThe battery carries the load, the genset is stopped.
- Charge drops to thresholdThe 48 V genset starts and charges the battery at rated power.
- MonitoringFuel level, engine hours, alarms and refuelling forecast are visible in the monitoring system.
- primary source
- backup
- unstable
- not available
The 48 V genset connects to the DC bus without rectifiers.
AC and DC gensets on site
| Parameter | AC genset | 48 V genset |
|---|---|---|
| Output | 230/400 V AC, then rectifiers | 12-48 V DC directly to the bus |
| Power | from 6 kVA | 5-27 kW |
| Engine speed | constant | reduced at low load |
| Fuel consumption | baseline | 40-60 % lower |
| Service interval | 250-500 h | up to 1,000 h |
Savings depend on load, climate and solar share; we calculate each site based on its load profile.
See also: Telecom: all solutions · Storage for telecom
Projects using this solution
Manufacturer data. Details and references on request after approval by customers.
1,732 units of 15 and 25 kW
- Scope
- 1,000 l tanks
- Result
- year-round operation including winter
110+ off-grid sites
- Scope
- 48 V gensets as the primary source, 2,000 l tank, 1,000 Ah batteries
- Result
- high altitude and snow, helicopter delivery
Hybrid with 48 V gensets
- Scope
- 13.5 kW oil-cooled genset, 1,000 Ah batteries; the operator has more than 2,000 units
- Result
- 60 % fuel savings
85 units for base stations
- Scope
- 65 dBA at 1 m
- Result
- designed for high altitude and low temperatures
40 hybrid sites in the desert
- Scope
- 45 kVA genset, 42 kW solar plant with cleaning robot, monitoring
- Result
- 1,500 hours between services
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Learn moreRequest
Tell us about your site
Load and load profile, operating mode (backup or primary source), climate, grid availability, noise and fuel requirements. We will reply with a configuration, lead time and proposal.