The Studer Xtender is a Swiss-made pure sine inverter/charger, designed for off-grid (remote site), back-up and solar hybrid installations. A single unit combines the inverter (producing pure sine 230 V from a 12, 24 or 48 V battery), the multi-stage battery charger, automatic transfer from the grid or generator, and the Smart-Boost power-boosting function. The range extends from 500 VA (XTS) to 7,000 VA per unit (XTH), with parallelling of up to 9 inverters and single-phase or three-phase operation.
Why choose the Xtender?
- All-in-one: pure sine inverter + charger + transfer (relay) + grid topping-up in a single enclosure.
- Smart-Boost: adds battery power to that of a generator or an undersized AC source, including on inductive loads or those with high inrush current.
- Ultra-fast transfer: switchover between grid and battery in under 15 ms, with no interruption noticeable to the loads.
- Scalable: up to 9 units in parallel, single-phase or three-phase, to reach several tens of kVA.
- Full control: settings and supervision via the RCC-02/-03 remote control or the Xcom (TabPC) interface, with software updates.
- Robust & durable: Swiss design, operating range from −20 to 55 °C, programmable multifunction contacts.
Technical specifications
| Specification |
Value |
| Type |
Pure sine inverter/charger (off-grid / back-up / hybrid) |
| Battery voltage |
12 / 24 / 48 V (depending on model) |
| Output voltage |
230 Vac (± 2 %), pure sine wave, 45–65 Hz |
| Power per unit |
from 500 VA (XTS) to 7,000 VA (XTH 8000-48) |
| Peak power (5 s) |
up to 21 kVA (XTH 8000-48), approx. 3× rated power |
| Charging current |
from 12 A to 160 A (depending on model) |
| Battery charging |
multi-stage (bulk, absorption, float, equalisation, etc.) |
| Max efficiency |
up to 96 % |
| Transfer time |
< 15 ms |
| Standby consumption |
< 2 W (XTM) |
| Parallelling |
up to 9 units, single-phase or three-phase |
| Temperature range |
−20 to 55 °C |
| Control |
RCC-02/-03 remote control, Xcom (TabPC) interface, multifunction contacts |
| Manufacture |
Studer Innotec — Switzerland |
Models & references
Three families cover the full range of requirements: XTS (compact, IP54, small installations), XTM (medium installations) and XTH (high power and high charging current). Power figures given as Pnom / P30 min.
| Model |
Battery voltage |
Power (nom. / 30 min) |
Max charge |
| XTS 900-12 |
12 V |
500 / 900 VA |
35 A |
| XTS 1200-24 |
24 V |
650 / 1,200 VA |
25 A |
| XTS 1400-48 |
48 V |
750 / 1,400 VA |
12 A |
| XTM 1500-12 |
12 V |
1,500 / 1,500 VA |
70 A |
| XTM 2000-12 |
12 V |
2,000 / 2,000 VA |
100 A |
| XTM 2400-24 |
24 V |
2,000 / 2,400 VA |
55 A |
| XTM 2600-48 |
48 V |
2,000 / 2,600 VA |
30 A |
| XTM 3500-24 |
24 V |
3,000 / 3,500 VA |
90 A |
| XTM 4000-48 |
48 V |
3,500 / 4,000 VA |
50 A |
| XTH 3000-12 |
12 V |
2,500 / 3,000 VA |
160 A |
| XTH 5000-24 |
24 V |
4,500 / 5,000 VA |
140 A |
| XTH 6000-48 |
48 V |
5,000 / 6,000 VA |
100 A |
| XTH 8000-48 |
48 V |
7,000 / 8,000 VA |
120 A |
Dimensions and weight: XTS 110 × 210 × 310 mm (8.2 to 9.3 kg, IP54 rating); XTM 133 × 322 × 466 mm (15 to 22.9 kg); XTH 230 × 300 × 500 mm (34 to 46 kg).
Modes & parallelling
The Xtender combines and automates four core functions: inverter, battery charger, switching (transfer) and topping-up from external AC sources. Everything is fully configurable from the RCC-02/-03 remote control or the Xcom (TabPC) interface, with software updates to stay at the cutting edge of technology.
- Parallelling: up to 9 Xtenders connected together, single-phase to increase power, or three-phase (3, 6 or 9 units).
- Smart-Boost: instantaneous battery topping-up to supplement a generator or the grid, even on inductive loads or those with high inrush current.
- Multifunction contacts: programmable voltage-free relays (generator start, load shedding, alarm, time slots, etc.), responding to internal or external events.
- Automatic transfer: switchover between grid and battery in under 15 ms, ideal for back-up applications.
Certifications
The Xtender inverter/chargers comply with the European Low Voltage (LVD 2014/35/EU) and EMC (2014/30/EU) directives, and meet the EN/IEC 62477-1, 62109-1, 62109-2, 62040-1, 62040-2, 61000-3-2, 61000-3-3, 61000-6-2 and 61000-6-4 standards. Swiss design and manufacture (Studer Innotec).
Pre-engineered Studer kit
Studer and SINES have developed a series of ready-to-use kits to simplify and standardise the deployment of solar systems on remote sites. Monitoring and production-tracking tools make it possible to collect valuable data, anticipate problems and correct deviations throughout the life of the installation.
To go further, discover the Studer Innotec brand, the new-generation all-in-one inverter Studer NEXT3, or our full range of inverter/chargers. Contact SINES Export for technical advice or a quotation.
