Wilo-Actun OPTI-MS
Wilo-Actun OPTI-MS – Autonomous, optimised water supply using solar power.
Ensuring a reliable water supply in arid and remote regions not connected to the power grid is a challenge. The new solar-powered Wilo-Actun OPTI-MS, provides a solution which is independent of the mains power supply for an effective and reliable water supply.
Your advantages
- Fully autonomous and cost-efficient water supply utilising solar power
- Easy electrical installation via integrated frequency converter and without the need for parametrisation
- Optimised water output thanks to high hydraulics and motor efficiencies and dynamic MPPT (Maximum Power Point Tracking – ensures the operation of the solar panel at maximum performance level)
- System-specific flexibility thanks to wide range of services
- Increased durability and reliability through high-quality materials and an encapsulated motor design
- Additional operational reliability by using integrated safety devices
- Straightforward remote access to the submersible pump’s operating parameters and settings using the Solar Connect tool in the Wilo-Assistant app
- Notifications via push messages when the operating status changes
The autonomous water supply using solar power – for irrigation and drinking water supply
Irrigation
1 - Water output:
A sophisticated solution that is independent from the power grid featuring many advantages:
- Optimised water output
- Operational reliability and convenience
- Reduced operating costs
2 - Operational reliability
- Premium stainless steel, encapsulated motor version and mechanical seal
- Safety features protecting against overheating, excess current, overvoltage and undervoltage as well as dry running
> Maximum service life and operational reliability
Irrigation
1 - Autonomous power supply
- Photovoltaic system ensures autonomous power supply
- Not dependent on local power grid or diesel generator
- Lasting reduction in operating costs
2 - Efficiency
- High hydraulic efficiency
- Highly efficient permanent magnet motor
Irrigation
1 - Weather conditions
- Optimum water output thanks to dynamic Maximum Power Point Tracking (MPPT)
- Even in poor weather conditions
2 - Commissioning
- Easy commissioning due to integrated frequency converter
- No pump parameterisation
- Ready for use immediately after simple electrical connection
> Optimum water delivery with minimal operating costs
3 - At night
Optional use with AC power sources
Drinking water supply
1 - Water output
Autonomous and reliable drinking water supply for family homes up to small settlements with many advantages:
- Optimised water output
- Operational reliability and convenience
- Reduced operating costs
2 - Operational reliability
- Premium stainless steel, encapsulated motor version and mechanical seal
- Safety features protecting against overheating, excess current, overvoltage and undervoltage as well as dry running
> Maximum service life and operational reliability
Drinking water supply
1 - Autonomous power supply
- Photovoltaic system ensures autonomous power supply
- Not dependent on local power grid or diesel generator
- Sustainable reduction in operating costs
2 - Weather conditions
- Optimum water output at any time thanks to dynamic Maximum Power Point Tracking (MPPT)
- Even in adverse weather conditions
3 - Efficiency
- High hydraulic efficiency
- Highly efficient permanent magnet motor
> Virtually no operating costs
Drinking water supply
1 - Commissioning
- Easy commissioning due to integrated frequency converter
- Pump must not be parameterised on commissioning
- Immediately ready for operation following electrical connection to the solar module
2 - At night
Optional use with AC power sources to ensure optimum water output – even during the night.
3 - Water supply
- Use of water towers as buffers
- Direct connection of float switch without additional switch gears
- System guarantees water supply at night
> No expensive battery systems
Key Facts
650 people can be supplied with water using a Wilo-Actun OPTI-MS* *80 m³/d at 6 kWh/m²/d; 120 l/person, source: solar.wilo.com
149.6 million kilometres is the distance the sun travels on the centre path to reach the Earth in order to power solar pump systems
< 1 year amortisation time: amortisation time of less than one year for the solar pump station as a replacement for diesel-generator-based systems is feasible
MPPT
Optimum water supply in all weathers
Dynamic MPPT
Integrated Maximum Power Point Tracking guarantees maximum water output and efficiency.
If there is a change in the exposure level of the solar modules, the maximum performance point (MPP), current, and power are offset in relation to the voltage. The MPPT algorithm identifies the ideal ratio between electric current and voltage to consequently dynamically actuate MPP. As a result, the available exposure to sunlight is optimally converted into electrical power to maximise the water supply.
This means: For the same solar radiation intensity and the same configuration of photovoltaic modules, Wilo-Actun OPTI can pump more water than other solar-powered submersible pumps.
“Easy installation and excellent support from Wilo.”
Mohamed Bouchta, installer, Morocco
“An autonomous system thanks to solar power.”
John Stuart, operator, UK
Configuration information and tips
Easy selection guide for solar pump systems
The geographical conditions on site play a crucial role when using submersible pumps with solar power. Different regions are subject to more or less exposure to sunlight and this affects the volume flow of our solutions.
Here are guide values for the average hours of sunshine in your region to enable you to design your solution better. You are welcome to use our configuration service and our online configuration software Wilo-Select SOLAR as part of your planning
Calculation
Additional help in configuration is provided by our calculation, which you can use to calculate the typical volume flow to help select the solar pump system:
Easy selection guide for solar pump systems
Find out which solution is suitable for your individual situation here.
Wilo-Select SOLAR configuration software
Flexible, convenient, efficient and powerful – Wilo-Select SOLAR
Find out how to select your system here step by step.
Step 1:
With Wilo-Select SOLAR configuration software, you can determine the optimum system for your autonomous water supply. Here you can view pump data, information on solar panels and accessories, including prices.
Step 2:
Log in easily with your own login ID or register here.
Step 3:
Under the SYSTEMS tab, you can create your own individual project.
Step 4:
Choose the system location and determine its operating period. Save your details.
Step 5:
Now record your individual requirements such as the planned amount of water for delivery each day, the delivery head or the solar panels used - the software suggests the angle for the ideal alignment as standard.
Step 6:
Based on the specifications you entered regarding pipes, valves, degrees of curvature and cables, the software calculates the pipe friction loss. If all pipe friction losses are already included in the delivery head, these values can be completed as “0” or “100” for the pipe diameter.
Step 7:
In the following, you will receive an individual recommendation for suitable systems and the associated technical data. You can choose your optimum system on this basis.
Step 8:
When choosing your system, you receive a full overview such as performance curves or output quantities over the course of the year as well as an indication of prices for the selected components based on the Wilo gross list price. Partner companies have the opportunity to provide a discount for their customers here. This shall not affect Wilo’s pricing.
Step 9:
In the download section, you can view and download data sheets and a pricing indication and can quickly and easily create technical quotes for your customers.
Step 10:
The configuration software Wilo-Select SOLAR will quickly and easily lead you to the right solution. Sign up now!
FAQ
Do I have to start the solar pump every day?
No, both the OPTI-MS and OPTI-QS have sophisticated electronics which start the pump autonomously, provided there is sufficient solar power.
Which previous knowledge is required to adjust the solar pump?
No previous knowledge is required since the pump’s electronics automatically adjust to local conditions, making adjustments unnecessary.
Do I need an external control device to operate the solar pump?
No, an external control device is not required. However, the Wilo-MS Control can be used to expand functionality, e.g. by using sensors.
Which accessories are required in order to connect a float switch, for example to fill a tank?
The Wilo-Actun OPTI-MS offers a signal cable input that can be directly connected to a float switch using a submersible cable. The Wilo-Actun OPTI-QS can be equipped with the optional Wilo-QS Stop Module which can then be connected to the float switch.
Which additional protective devices are recommended?
The Wilo-Actun OPTI-MS and the Wilo-Actun OPTI-QS come pre-equipped with the most important protective devices. This includes dry-running protection, temperature monitoring and monitoring of electrical parameters (overvoltage and undervoltage, excess current).
Which photovoltaic modules can be used with the solar pumps?
In general, you can use photovoltaic modules from any manufacturer and specification as long as the voltage ranges of the solar pumps are taken into account. The Wilo-Actun OPTI-MS can be operated between 90 and 400 VDC and the OPTI-QS between 70 and 190 VDC. In addition, Wilo offers high-quality, German-made photovoltaic modules that can be combined with the solar pumps.
Can the solar pumps also be connected to an alternating current?
The Wilo-Actun OPTI-MS can be connected to both a direct current of the photovoltaic modules and an alternating current (e.g., 1~230 V, 50 Hz). The Wilo-Actun OPTI-QS can only be operated using the direct current of the photovoltaic modules.
How do I find out which solar pump I need?
For quick and easy configuration, you can use our “Easy selection guide for solar pump systems”. For an especially precise and individualised configuration, we recommend using our online tool Wilo-Select SOLAR available at solar.wilo.com. The tool takes your requirements and installation location into account and provides you with precise predications about the amount of daily water output in different months.
How many photovoltaic modules do I need?
The number of required photovoltaic modules can be found in our “Easy selection guide for solar pump systems” [HA1] or by using our Wilo-Select SOLAR online tool at solar.wilo.com. These take the relevant voltage range of our solar pumps into account: The Wilo-Actun OPTI-MS can be operated between 90 and 400 VDC and the Wilo-Actun OPTI-QS between 70 and 190 VDC.
How can I ensure water supply during night-time?
Since solar energy cannot be used at night to pump, several alternative water pumping options are conceivable. One option is to use a tank that has been appropriately dimensioned as a buffer for the hours at night. Another option is to connect the Wilo-Actun OPTI-MS to alternating current sources, for example, to a diesel generator or power grid.
How can I store solar energy?
We recommend using water tanks as buffers for indirectly storing solar energy. These can contribute to securing the water supply at night and also during lower-performing seasons.
Can I also use the system for heating?
Wilo-Actun OPTI solar pumps are only suitable for pumping clean water up to a temperature of 35 °C. Wilo also offers dedicated pumps for solar thermal technology.
How can I lengthen the cable on the pump?
A cable connector with instructions is included in the scope of delivery. Submersible cables from Wilo can be connected to the short cable of the pump using this connector.
Can existing photovoltaic systems be used?
Solar pumps in the Wilo-Actun OPTI series can be combined with existing photovoltaic systems as long as the voltage ranges are compatible: The Wilo-Actun OPTI-MS can be operated between 90 and 400 VDC and the Wilo-Actun OPTI-QS between 70 and 190 VDC. In addition, the specifications of your photovoltaic modules can be saved in our online tool at solar.wilo.com. Using your specifications, the configuration then validates the photovoltaic system and solar pump combination.
How often do the solar pumps need to be maintained?
The Wilo-Actun OPTI submersible pumps are generally low-maintenance. Regular maintenance intervals do not need to be planned.
Irrigation - Your autonomous irrigation system for agriculture.
Drinking water supply - Your reliable solution for wells and surface waters.
Wilo-Actun FIRST (4")
Raw water intake from boreholes for irrigation.
Wilo-Xiro SPI (6" – 10")
Raw water intake from boreholes for irrigation.
Wilo-Sub TWI (4" – 10")
Raw water intake from boreholes for drinking water supply.
For more comfort: Discover the Wilo-Assistant app
- QR code scanner
- AR
Scan all the product images in our brochures marked with the AR (augmented reality) symbol to obtain more information. - Product search
Here you can find your preferred product using the type designation or article number. - Instructions
Each Wilo product comes with a detailed installation guide. - Also available offline
Wilo-Assistant also provides the user with targeted access to product information and know-how relating to pump technology. Most of the data content and functions are installed directly on your smartphone and are therefore available even when you aren’t connected to the Internet
Contact
Got a query or need advice on Wilo-Actun OPTI? Then simply fill in the contact form and we’ll get in touch:
Contact formSeries description
Your advantages
- Fully autonomous and cost-efficient water supply utilising solar power
- Easy electrical installation via integrated frequency converter and without the need for parametrisation
- Optimised water output thanks to high hydraulics and motor efficiencies and dynamic MPPT (Maximum Power Point Tracking – ensures the operation of the solar panel at maximum performance level)
- System-specific flexibility thanks to wide range of services
- Increased durability and reliability through high-quality materials and an encapsulated motor design
- Additional operational reliability by using integrated safety devices
- Straightforward remote access to the submersible pump’s operating parameters and settings using the Solar Connect tool in the Wilo-Assistant app
- Notifications via push messages when the operating status changes
Wilo-Actun OPTI-MS – Autonomous, optimised water supply using solar power.
Ensuring a reliable water supply in arid and remote regions not connected to the power grid is a challenge. The new solar-powered Wilo-Actun OPTI-MS, provides a solution which is independent of the mains power supply for an effective and reliable water supply.
Construction
Multistage submersible pump in tie strap version (MSI) or as a progressive cavity pump (MSH) for vertical or horizontal installation
Application
- Specially designed for operation with photovoltaic modules
- For water supply and drinking water supply from boreholes and rainwater storage tanks
- Process water supply
- Sprinkling and irrigation
- Pressure boosting
- For pumping water without long-fibre and abrasive constituents
Equipment/function
- Fully submersible, multistage submersible pump:
- as centrifugal pump in sectional construction (MSI) or
- as progressive cavity pump (MSH)
- with integrated non-return valve
- with corrosion-free, encapsulated permanent magnet motor with water-glycol filling
- Built-in frequency converter
- Integrated software algorithm MPPT (“Maximum Power Point Tracking”) for applications with solar modules
- Pre-installed signal cable for direct connection to signal transmitters (e.g. float switches)
Scope of delivery
- Submersible pump with connection cable (2.5 m)
- Casting resin cable connector with integrated water level sensor
- Installation and operating instructions
- Hydraulics for self-assembly (MSH only), incl. installation instructions and installation accessories
- Adapter for pressure connection 1½" on 2" (only types OPTI-MSI4.08-..)
Type key
Example: | Wilo-Actun OPTI-MSH4.02-02 |
Actun | Product family |
OPTI | Series designation |
MS | Type name MS = Multipower Solar |
H | Hydraulic version H = progressive cavity pump I = multistage centrifugal pump |
4 | Nominal diameter in inches |
.02 | Rated volume flow in m3/h |
-02 | Number of stages |
Technical data
- Operating voltage: 90 – 265 V AC or 90 – 400 V DC
- Submerged operating mode: S1
- Max. fluid temperature: 35 °C
- Minimum flow rate at motor: 0.2 m/s
- Max. sand content: 50 g/m3
- Max. immersion depth: 150 m
- Protection class: IP68
- Pressure connection: Rp 1¼ – Rp 2
Materials
- Hydraulics housing: stainless steel 1.4301 (AISI 304)
- Impellers: stainless steel 1.4301 (AISI 304)
- Hydraulic shaft
- MSH: Stainless steel 1.4401 (AISI 316)
- MSI: stainless steel 1.4301 (AISI 304)
- Motor housing: stainless steel 1.4301 (AISI 304)
- Motor shaft: Stainless steel 1.4057 (AISI 431)
Description/construction
Submersible pump as centrifugal pump in sectional construction (MSI) or as progressive cavity pump (MSH) for vertical or horizontal installation.
Hydraulics
A multistage submersible motor centrifugal pump (MSI) with radial impellers in sectional construction or a progressive cavity pump (MSH) with helical rotor inside a twin-helix rubber stator. Integrated non-return valve. All parts that come in contact with the fluid are made of corrosion-free materials.
Motor
Single-phase current permanent magnet motor. Sealed and hermetically cast motor, resin-impregnated, with enamel-insulated winding, self-lubricating bearing, with water-glycol filling.
Frequency converter
Hermetically sealed frequency converter for direct operation using alternating current and direct current sources. The integrated software algorithm MPPT (“Maximum Power Point Tracking”) enables the available power to be matched in order to maximise the pumped volume flow (dynamic MPPT).
Safety functions:
- Overvoltage protection
- Excess current protection
- Dry-running protection (via integrated sensor)
- Temperature monitoring
Cooling
The motor is cooled by the pumped fluid. The motor must always be immersed when operated. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. Horizontal installation must be performed in conjunction with a cooling jacket.
Duty chart
Wilo-Actun OPTI-MS
Downloads
Easy selection guide for solar pump systems
| Page format | 297.0 x 209.9 mm |
| Number of pages | 2 |
PDF (687 kB)
Download
Easy selection guide for solar pump systems
| Page format | 297.0 x 209.9 mm |
| Number of pages | 2 |
PDF (627 kB)
Download
Easy selection guide for solar pump systems
| Page format | 297.0 x 209.9 mm |
| Number of pages | 2 |
PDF (699 kB)
Download
Wilo-Actun OPTI - Autonomous, optimised water supply using solar power
| Page format | 209.9 x 297.0 mm |
| Number of pages | 12 |
PDF (15 MB)
Download
Wilo-Actun OPTI-MS, Wilo-Actun OPTI-QS
| Article Number | 6089479 |
| Edition | 2020-09 |
| Version number | 02 |
| Page format | 209.9 x 297.0 mm |
| Number of pages | 12 |
PDF (2 MB)
Download
General overview 2020 International version
| Edition | 2020 |
| Version number | 1 |
| Page format | 209.9 x 297.0 mm |
| Number of pages | 78 |
PDF (48 MB)
Download
Wilo-Actun OPTI-MS...
| Article Number | 6084879 |
| Edition | 2019-02 |
| Version number | 02 |
| Page format | 148.2 x 209.9 mm |
| Number of pages | 372 |
PDF (6 MB)
Download