The solar power set Xtender Power II is a professional photovoltaic 230V AC off-grid system. It offers a reliable and quiet power supply by means of solar energy in areas without access to the public grid, e.g. for garden houses, holiday residences or remote homes. By selecting high-performance components, the system may be easily extended and customized at any time to suit your needs.

Unlike other providers we deliver our system in an installation ready design with easy to follow assembly instructions. All electronic components including AC fuse box and twin sockets are assembled and pre-wired on a wall board. For the solar array a suitable roof mounting system is included, optional for ground or flat roof installation. Prefabricated cabling enables a simple and fail-safe connection of the modules and batteries. There are no special tools required! You can easily assemble and install the Xtender Power Set by your own.

The systems is designed for 230V AC applications with a continuous load of up to 3.5kW, such as Lighting, TV, video / DVD, radio, pump, drilling machine, coffee maker or refrigerator. The excellent overload capability as well as the true sine wave of the inverter ensures a safe and trouble-free operation of the consumers.

In addition to the solar modules, the public grid or a fuel generator can be connected to the system as power respectively charging source. The entire system may thus be able to maintain an uninterruptible power supply, even during months with low insolation. A built-in change-over contact allows an automatic start and stop of the grid or generator power source.

Features at a Glance!

The standard set consists of the following main components:

1x inverter/battery charger Studer XTM 4000-48 with 48V system voltage
1x digital display/programming unit Studer RCC-02 for Xtender
1x battery status processor with shunt Studer BSP-500 for Xtender
1x solar charge regulator Morningstar TriStar TS45 with temperature sensor
1x digital display MorningStar Meter TS-M-2 for TriStar
4x monocrystalline solar module Suntech STP190S-24/Ad+ with 190 watt peak
1x pitched roof mounting system for solar generator
4x maintenance-free gel battery Banner SBG 12-230 with 230Ah (C=20h) capacity
1x battery circuit breaker with NH fuses
1x pre-assembled electronic board with AC fuse box and twin sockets
1x module connection box with overvoldaye protection
1x pre-fabricated module connecting cable set with MC4 plug connection
1x pre-fabricated battery connecting cable set

Due to the powerful solar charge regulator with up to 45A at 48V, you can upgrade the system by additional solar modules at any time. Overall, you can connect up to 16 modules of the type Suntech STP190S-24/Ad+ (190Wp) with a total capacity of 3040Wp. Likewise, the storage capacity may even be upgraded by additional batteries of the same type.

Functional Principle

The Xtender Power Set consists of four main components, solar charge controller, inverter/charger, solar modules and batteries.

The solar charge controller stores the energy in the batteries, which is produced by the solar modules or by the AC power source. It protects the battery bank from overcharging and guarantees, together with an intelligent charging algorithm, a long lifetime of the batteries.

The inverter transforms the solar energy, which is stored in the battery bank, into 230V AC power. It also prevents the batteries from being deep discharged by disconnecting consumer loads in case of a low battery level. Optionally, you can connect a fuel generator or the public grid to the system as an additional energy source.

Thanks to the additional shunt, the battery monitor is able to determine the exact state of charge of the battery. The status of the battery is displayed on the remote control of the inverter.

A battery circuit breaker with NH fuses adds safety during installation and operation of the system.

Each single component of the power set matches up the other ones perfectly. The tailored solar mounting system as well as the pre-fabricated cabling with plug connection reduces installation work to a minimum.

A subsequent upgrading of the set is possible at any time without replacing the existing components!

Performance Overview

When selecting a suitable off-grid power system, you must ensure that both the power consumption (in watts [W]), defined by the connection power of all simultaneously driven consumers and the energy demand (in watt hours [Wh]), defined by the operating time of the consumers can be covered.

The yield of the solar generator depends on the location and current season. Therefore a general indication of the amount of energy that can be covered by the Xtender Power Set is not possible. In general, during summer time good yields are achieved, whereas in the winter months far less energy is produced, especially in the northern regions. This makes it impossible to maintain a constant solar power supply throughout the year in Central Europe. We recommended to reduce the consumption during the winter months or to use a conventional power generator as additional energy source. In the more southern Mediterranean region, the seasonal variations are less distinct. Depending on the site of installation, the energy requirement may be covered entirely by solar power.

The following is a summary of the performance data of the Xtender Power Set II:

Power Output 1-phase* (230V / 50Hz) at 25°

3500 W

10500 W

Photovoltaik peak power**

760 Wp

1480 Wp

Battery capacity at 48V (C=20h)***

11040 Wh

33120 Wh

	existing		possible extension

* 3-phase extension up to 31.5kW power output possible

** possible extension with the amount of solar charge controllers included by default

*** parallel connection of max. 3 battery blocks should not be exceeded

For example, the Xtender Power Set II is ideal for providing energy to a holiday residence in Southern Europe. With a power output of 3.5 kW the system ensures the operation of all necessary AC consumers. The volume of usable energy that is made available by the 760Wp solar generator amounts up to 3 kWh per day. By upgrading the PV generator to 2.96kWp, you can cover an energy demand of up to 12kWh per day. The standard battery capacity is 11kWh and assures a system autonomy between 2 and 3 days, depending on the consumed energy. You can extend the battery to a capacity of up to 33kWh (690Ah/48V) with standard GEL 12V block batteries or more with OPzS 2V batteries. We recommend to use a diesel generator of min. 4 kW in order to make up for seasonal variations and to serve as a backup power supply.

The following is a summary of the daily amount of energy which can be covered by the Xtender Power Set II:

Average daily available energy (Central Europe)

2000 Wh (ø 4.5kWh/m²/day)

1000 Wh (ø 2kWh/m²/day)

400 Wh (ø 0.8kWh/m²/day)

Average daily available energy (Southern Europe)

2900 Wh (ø 6kWh/m²/day)

2000 Wh (ø 4kWh/m²/day)

1200 Wh (ø 2.5kWh/m²/day)

	Sommer (April - Sept.)		Winter (Okt - März)		Lichtärmster Monat (Dez.)

In any case, before buying this system, check carefully if your requirements are met, in particular if the power set matches the projected consumer profile. Please, also refer to our FAQs for further information or contact us directly.

Solar Generator Mounting Options

There are 3 mounting options available for the solar generator included in this power set. Please do not forget to specify the desired mounting option ordering!

Pitched Roof - Hook	Pitched Roof - Hanger Bolt	Flat Roof / Ground Mount
(tiles, pantiles)	(corrugated sheets, roofing felt)	(selectable elevation)
no surcharge	no surcharge	surcharge see option

Upgrades

The following accessories and upgrades are available for this power set. Be sure to choose each desired option when ordering!

Tubular Plate Battery Hoppecke OPzS solar.power

The OPzS single cell battery is a vented stationary 2V battery with liquid electrolyte (diluted sulphuric acid).

The batteries offer an extreme high cycling expectancy. Therefore these batteries are especially suitable for applications with high charge and discharge rates like photovoltaik off-grid power systems.

The OPzS single cells have a live expectancy of up to 20 years and a cycling expectancy of up to 1500 cycles with 80% depth of discharge.

More information on the product page.

surcharge see option

Questions & Answers

Which consumers may I operate? How long may I operate them? How long does it take to fully charge the battery? These questions and more will be answered in our FAQs.

Scope of Delivery / Technical Data

1x	Pre-assembled Electronic Board
	Dimensions (lxwxh) in mm	730 x920 x150
	Weight	appr. 55kg
	Extras	230V AC fuse/distribution box, AC twin socket
1x	Inverter/Charger Studer XTM 4000-48
	Type / nominal voltage	reiner Sinus / 48V
	AC continuous power (25°)	3500W
	AC surge power (5 sec.)	10500W
	Efficiency	max. 96%
	Charging current (max. 265Vac / 45-65Hz)	0 - 50A
	Consumption stand-by / on	1.8W/2.1W/14W
	Dimensions (lxwxh) in mm	466 x322 x133mm
	Weight	22.9kg
	Special features	increase of inverter power and 3-phase operation by coupling several Xtender
1x	Remote Control/Digital Display Studer RCC-02
	Mounting type	surface/wall mounting
	Cable length	max. 50m (5m included)
1x	Battery Status Processor Studer BSP-500
	Cable length	2m for battery connection, 5m communication cable
	Max. current of shunt	500A
1x	Solar Charge Controller Morningstar TriStar TS-45
	System voltage	12-48V
	Charge / Load / Diversion current	max. 45A
	Solar input voltage (Voc)	max. 125V
	Self consumption	< 20mA
	Dimensions (lxwxh) in mm	260 x127 x71
	Weight	1.6kg
1x	Control Unit/Digital Display TriStar Meter TS-M-2
	Mounting type	on controller
1x	Temperature Sensor Morningstar RTS
	Cable length	10m
4x	Suntech STP 190S-24/Ad
	Type of cells	monocrystalline
	Power (Pmax) / nominal voltage	190Wp / 24V
	Voltage at Pmax (Vmp)	36.5V
	Current at Pmax (Imp)	5.2A
	Dimensions (lxwxh) in mm	1580 x808 x35
	Weight	17.2kg
	Special features	4mm² module connecting cable with H+S RADOX plug connection
1x	Module Connection Box MCB-06
	No. of string inputs / cable cross section	6 / max. 6mm²
	Output cable cross section	max. 25mm²
	Overvoltage protection	disk varistors (delta connection)
1x	Mounting system for Solar Generator
	Type of installation	pitched roof / flat roof or ground mount*
4x	GEL Battery Banner SBG 12-230
	Nominal voltage	12V
	Capacity (C=20h)	230Ah
	Dimensions (lxwxh) in mm	521 x269 x203
	Weight	70kg
1x	Battery Fuse Switch BS-35
	Connection / size	3-pole / 160A (NH00)
	Mounting option	surface
	1x	Pre-fabricated Cabling
		Module cable set (4x2m)	H07RNF 4mm² + H+S RADOX->MC4 plug connection
Module main cable set (2x10m)		H07RNF 10mm²
Battery main cable set (2x1.5m)		H07VK 35mm² + ring terminals
	*see article options / subject to change without notice