GRUNDFOS PRODUCT GUIDE SQFlex Renewable-energy based water supply systems 50/60 Hz
SQFlex Table of contents 1. 2. Product data 3 Introduction Applications Features and benefits Performance range System overview Identification 3 5 5 7 8 9 Construction Material specification, helical rotor pump Material specification, centrifugal pump Material specification, motor 3. 4. 5. 6. 7. 8.
1 SQFlex Introduction The SQF pump complete comprises: The SQFlex system is a reliable water supply system based on renewable energy sources, such as solar and wind energy. The SQFlex system incorporates an SQF submersible pump. • motor • 6 ft (1.8 m) cable with water level electrode and socket • cable guard. TM02 2217 3901 Very flexible as to its energy supply and performance, the SQFlex system can be combined and adapted to any need according to the conditions on the installation site.
1 SQFlex Product data Motor IO 101 SQFlex switch box The motor has been developed specifically for the SQFlex system and is designed according to the permanent-magnet principle with built-in electronic unit and is available in only two sizes. The IO 101 is an on/off switch box designed for opening and closing the system power supply and is used in solar-powered SQFlex systems with a back-up generator. The motor speed range is 500-3600 rpm, depending on power input and load.
1 SQFlex Features and benefits Being designed for continuous as well as intermittent operation, the SQFlex system is especially suitable for water supply applications in remote locations, such as • villages, schools, hospitals, single-family houses, etc. • farms – watering of cattle – irrigation of fields and greenhouses • game parks and game farms – watering applications • conservation areas – surface water pumping – floating pump installations for pumping of water from ponds and lakes.
1 SQFlex Product data Overvoltage and undervoltage protection Built-in sand shield Overvoltage and undervoltage may occur in case of unstable power supply or a faulty installation. The built-in sand shield prevents sand damage to the pump and motor by slinging it out through the oval slots located at the base of the pump end. The pump will be cut out if the voltage falls outside the permissible voltage range.
1 SQFlex H [m] H [ft] SQFlex Solar 650 180 Product data Performance range 600 550 E 1400 Wp 160 500 D 800 Wp 140 450 C 400 Wp 120 400 B 200 Wp A 100 Wp 350 100 300 80 60 250 200 150 40 100 0 A C D E 0 0 0 H [m] B 50 2000 4000 10 6000 20 8000 10000 30 12000 40 14000 50 16000 60 18000 20000 Q 70 H [ft] [US GPD] Q [m³/day] TM02 2433 4311 20 SQFlex Wind 750 220 700 200 650 180 600 D 18 mph C 15 mph 550 160 B 13 mph 500 140 450 120 400 A 11 mph 350 100
1 SQFlex Product data System overview The SQFlex system can be used in a number of combinations as shown in the table below. System consists of the following components Pump Solar panels Wind turbine Generator/ battery/ power supply Charge controller Switch box or breaker box Control unit Additional extras CU 200 () SQFlex Solar See page 14. IO 50 SQFlex Solar - with CU 200 and level switch See page 15. IO 50 SQFlex Solar - with back-up generator See page 16.
1 SQFlex Product data Identification Type key for helical rotor pumps Example 6 SQF -2 Rated flow at 3000 rpm [gpm] Type range Number of stages Type key for centrifugal pumps Example 25 SQF -3 Rated flow of corresponding SP pump [gpm] Type range Number of stages 9
2 SQFlex Construction 2. Construction Material specification, helical rotor pump SQF Pos.
2 SQFlex Construction Material specification, centrifugal pump SQF Pos.
2 SQFlex Construction Material specification, motor MSF 3 Pos.
3 SQFlex Selection 3. Selection Sizing of SQFlex system Grundfos has developed a PC-based sizing tool enabling the sizing of SQFlex systems. The sizing tool is integrated in Grundfos WinCAPS and covers both solar- and wind-powered systems. Visit Grundfos.com to use WebCAPS, our online version of WinCAPS. The following three parameters must be known for the sizing of the optimum SQFlex system: • installation location • maximum head required • quantity of water required.
3 SQFlex Selection Application examples SQFlex Solar The protective circuit incorporated in the motor electronic unit cuts out the pump in case of dry running or similar situations. The SQFlex Solar system is the simplest of the range of SQFlex systems. By using the IO 50, the power supply to the pump can be closed manually, for example when Benefits • Easy to install • Maintenance confined to periodic cleaning of the solar panels • Few and simple components.
3 SQFlex The CU 200 offers indication of - with CU 200 and level switch The SQFlex Solar system allows solar energy to be stored as water in a reservoir. • full water reservoir (level switch activated) • pump operation • input power. SQFlex Solar water supply systems with a water reservoir are used where The CU 200 indicates operational stoppage in case of • dry running • service (see page 35) • insufficient energy supply.
3 SQFlex Selection SQFlex Solar - with back-up generator During periods of limited solar energy, the SQFlex Solar water supply system provides reliable water supply. The system is connected to an external back-up generator via the IO 101. The system switches automatically to operation • via generator when – the energy supply from the solar panels is insufficient • via solar panels when – the generator is stopped manually or – the generator runs out of fuel.
3 SQFlex SQFlex Solar - with back-up batteries During periods of limited solar energy, the SQFlex Solar system provides reliable water supply. The supply of water is ensured by back-up batteries connected to the system via the charge controller. Benefits The system offers water supply during the night or during periods of insufficient solar energy. The system is connected as shown in fig. 14. • Power will be provided by the solar panels wired to produce 48-110 VDC (rated).
3 SQFlex Selection SQFlex Wind Proper siting for wind turbines For proper wind siting you must locate your Whisper wind turbine 20 ft (6 m) above any surrounding object within a 250 ft (76 m) (radius as shown in fig. 16. The SQFlex Wind system is based on wind energy as the only energy source for pump operation. The system is suitable for installation in areas where the wind is almost constant seen over a period of time.
3 SQFlex The CU 200 offers indication of - with CU 200 and level switch The SQFlex Wind system allows wind energy to be stored as water in a reservoir. • full water reservoir (level switch activated) • pump operation • input power. SQFlex Wind water supply systems with a water reservoir are used where The CU 200 indicates operational stoppage in case of • for short periods, the wind energy is insufficient to run the pump • there is a need for a back-up water source.
3 SQFlex Selection SQFlex Combo - combination of solar and wind energy The SQFlex Combo water supply system is ideal in areas where the solar and/or wind energy is sufficient to run the pump. The energy supply to the pump is a combination of solar and wind energy. As the turbine noise level increases with the wind speed, installation of the wind turbine near a residence is not recommended. Benefits The system offers water supply during the night or during periods of insufficient solar energy.
3 SQFlex The CU 200 offers indication of - with CU 200 and level switch The SQFlex Combo system allows solar and wind energy to be stored as water in a reservoir. • full water reservoir (level switch activated) • pump operation • input power. SQFlex Combo water supply systems with a water reservoir are used where The CU 200 indicates operational stoppage in case of • dry running • service (see page 35) • insufficient energy supply.
3 SQFlex Selection SQFlex system Benefits The system offers water supply 24 hours a day, independently of the weather. - with generator as power supply The SQFlex water supply system is connected to a diesel or gasoline driven generator. Other benefits of the system include • easy installation • a minimum of maintenance required • few and simple components. The generator must be running steadily before the pump is cut in.
4 SQFlex Solar panel wiring 4. Solar panel wiring Methods of solar panel wiring Solar panels can be connected in one of three methods: 1. Series wiring 2. Parallel wiring 3. Series/parallel wiring (a combination of the two) The Grundfos SQFlex pump is most efficient at voltages of 120V and above, up to a max of 300V. To maximize pump performance connect panels to obtain at least 120V. Series wiring All solar panels have a negative (-) and a positive (+) terminal.
4 SQFlex Solar panel wiring Now add the two pairs in parallel. Remember in parallel, voltage remains the same and amperage adds. Each pair produces 140V, so total voltage = 140V. Each pair produces 1.43A, so total amperage is 1.43 + 1.43 = 2.86A. Watts always add, so 100W x 4 = 400W. Cable sizing chart Since the SQFlex motor operates at peak efficiency with 120V or greater applied, we strongly recommend configuring panels to achieve 120V or greater.
5 SQFlex Performance curves 5. Performance curves Curve conditions Performance range, SQFlex Solar The SQFlex Solar performance range shown on page page 7 is based on • • • • solar radiation on a tilted surface (tilt angle of 20°) HT = 6 kWh/m2 per day ambient temperature: +85 °F (+29 °C) 20° northern latitude.
5 SQFlex Performance curves Curve charts 3 SQF-2 Q Q [m³/h] [US GPM] 3 SQF-2 3.2 3.0 35 50 ft 65 ft 80 ft 10 ft 0 13 ft 0f t 16 5f t 19 5f t 23 0f t 26 0f t 29 5f t 33 0f t 36 0f t 39 5f t 0.7 2.8 0.6 2.6 2.4 0.5 2.2 2.0 0.4 1.8 1.6 0.3 1.4 1.2 1.0 0.2 0.8 0.6 0.4 0.2 0.0 0.0 0.00 0.05 0 0.10 50 0.15 100 0.20 0.25 150 0.30 200 0.35 250 0.40 0.45 300 0.50 350 0.55 400 P1 [hp] P1 [W] TM02 2426 4311 0.1 3 SQF-3 Q Q [m³/h] [US GPM] 3 SQF-3 3.2 3.
5 SQFlex Performance curves 6 SQF-2 Q Q [m³/h] [US GPM] 39 5 ft ft 36 0 33 0 29 5 5.6 1.2 ft ft ft ft 6 SQF-2 26 0 6.0 23 0 35 50 ft f 65 t f 80 t ft 10 0f t 13 0f t 18 5f t 19 5f t 6.4 1.4 5.2 4.8 1.0 4.4 4.0 0.8 3.6 3.2 0.6 2.8 2.4 2.0 0.4 1.6 1.2 0.8 0.4 0.0 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90P1 0 50 100 150 200 250 300 350 400 450 500 550 600 650 [hp] P1 [W] TM02 2427 4311 0.
5 SQFlex Performance curves 11 SQF-2 Q Q [m³/h] [US GPM] 11 SQF-2 33 0 ft ft ft 39 5 11 ft 29 5 ft ft ft 36 0 2.5 26 0 12 23 0 19 5 18 5 ft ft 13 13 0 15 ft 35 ft 50 ft 65 ft 80 ft 10 0f t 14 3.0 10 9 2.0 8 7 1.5 6 5 1.0 4 3 0.5 2 0 0.0 0.1 0 0.2 100 0.3 200 0.4 0.5 300 0.6 400 0.7 500 0.8 600 0.9 1.0 700 1.1 800 1.2 900 1.3 1.4 1000 1.5 1100 1.6 1.7 1200 1.8 P1 1300 [hp] P1 [W] TM02 2428 4311 1 0.
5 SQFlex Performance curves 25 SQF-3 Q Q [m³/h] [US GPM] 10 25 SQF-3 44 7 ft 40 15 ft 8 36 35 ft 32 50 ft 28 6 24 20 4 16 12 2 8 0 0 0.0 0.1 0.1 0.2 0.2 0.3 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.7 0.7 0.8 0.8 0.9 0.9 1.0 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 P1 [hp] P1 [W] TM02 2429 4311 4 25 SQF-7 Q Q [m³/h] [US GPM] 10 25 SQF-7 44 40 8 35 ft 50 ft 36 65 ft 80 ft 32 100 ft 28 115 ft 6 130 ft 24 150 ft 20 185 ft 4 16 12 2 8 0 0 0.0 0.1 0.2 0.3 0.
5 SQFlex Performance curves 40 SQF-3 Q Q [m³/h] [US GPM] 40 SQF-3 85 18 80 75 16 7 ft 70 15 ft 65 14 12 35 ft 60 55 50 ft 50 10 45 40 8 35 30 6 25 20 4 15 10 5 0 0 0.0 0 0.1 100 0.2 0.3 200 0.4 0.5 300 0.6 400 0.7 500 0.8 600 0.9 1.0 700 1.1 800 1.2 900 1.3 1.4 1000 1.5 1100 1.
5 SQFlex Performance curves 60 SQF-3 Q Q [m³/h] [US GPM] 95 20 18 60 SQF-3 90 85 7 ft 80 15 ft 75 16 35 ft 70 65 14 12 50 ft 60 55 50 10 45 40 8 35 30 4 2 25 20 15 10 5 0 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 P1 [hp] P1 [W] TM03 3933 4311 6 Note: Max. P1 (W) shown on curve represents max. motor RPM.
6 SQFlex Technical data 6. Technical data Dimensions and weights Dimensions [in (mm)] S Pump type L ø5/16" (8 mm) ø8 32 TM02 2209 3901 Gross weight [lb] Shipping volume [ft3] L B S 3 SQF-2 47 (1194) 2.9 (74) 1" NPT 17 21 0.85 3 SQF-3 49 (1247) 2.9 (74) 1" NPT 17.5 21 0.85 6 SQF-2 48 (1219) 2.9 (74) 1" NPT 17.5 21 0.85 6 SQF-3 51 (1296) 2.9 (74) 1" NPT 1.8 2.2 0.85 11 SQF-2 49 (1247) 2.9 (74) 1 1/4" NPT 18 22 0.85 16 SQF-10 38 (965) 3.
6 SQFlex Power supply to pump 30-300 VDC, PE. 1 x 90-240 V –10 % / +6 %, 50/60 Hz, PE. Run-up time Depends on the energy source. Start/stop No limitation to the number of starts/stops per hour. Enclosure class IP 68. Motor protection Built into the pump. Protection against • dry running by means of a water level electrode • overvoltage and undervoltage • overload • overtemperature. Conductivity 70 s/cm (micro siemens).
6 SQFlex Technical data CU 200 SQFlex control unit Voltage 30-300 VDC, 8.4 A. 90-240 VAC, 8.4 A. Power consumption 5 W. Current consumption Maximum 130 mA. Pump cable Maximum length between the CU 200 and the pump: 650 ft. Maximum length between the CU 200 and the level switch: 2000 ft. Back-up fuse Maximum 10 A. Radio noise The CU 200 complies with the EMC Directive 89/336/EEC. Approved according to the standards EN 55014 and 55014-2. Relative air humidity 95 %. Enclosure class IP 55.
7 SQFlex Accessories 7. Accessories CU 200 SQFlex control unit Product CU 200 SQFlex Product number 96625360 TM02 2325 1206 The CU 200 is a combined status, control and communication unit especially developed for the SQFlex system. The CU 200 also enables connection of a level switch. The CU 200 incorporates cable entries for • • • • power supply connection (pos. 6) pump connection (pos. 7) earth connection (pos. 8) level switch connection (pos. 9). Fig. 24 CU 200 elements 10.5 in263 (263 mm) 3.
7 SQFlex Accessories POWER PUMP PE PE PE +5 V +10 V +24 V F1 = OVERVOLTAGE F2 = OVERTEMP F3 = NO CONTACT F4 = OVERLOAD CONTROL INDICATOR MAX SPEED GND IN LEVEL SWITCH GND IN LEVEL SWITCH Fig. 26 Electrical connections, CU 200 36 Level switch input High water level: Contact is closed. Low water level: Contact is open.
7 SQFlex IO 50 SQFlex switch box IO 50 SQFlex 96959028 The IO 50 is designed specifically for solar-powered SQFlex systems. The IO 101 functions as a connection box joining all necessary cables. 8 in (199 199 mm) 3 1/4” (80 mm) 6” (152 mm) 4.5 in (113 113 mm) 10.5 in (263 263mm) The IO 50 enables manual starting and stopping of the pump in an SQFlex Solar system and functions as a connection box joining all necessary cables.
7 SQFlex Accessories Furthermore, the IO 102 enables the combination of wind energy from the wind turbine and solar energy from the solar panels. The charge controller is a fully automatic battery charger and the only setting required is the selection of battery type. The IO 102 functions as a connection box joining all necessary cables. There are three battery types to choose from: 10.5 in (263 263 mm) • gel battery • sealed battery • flooded battery. 4.
7 SQFlex Whisper 200 wind turbine Note: The IO 102 functions as a breaker box and must be included in wind-powered SQFlex systems. The IO 102 must be ordered separately. Accessories Tower kit for Whisper 200 TM02 5582 3502 30 ft 40 ft 50 ft Product number Description Whisper 200 wind turbine 96472120 Specifications Rotor diameter: Weight: Mount: Start-up wind speed: Description Tower kit for Whisper 200 9 ft (2.75 m) 65 lb. 2.5" Schedule 40. 7 mph.
7 SQFlex Accessories Pipe pieces needed Tower kit, 30 ft • One 13 ft (3.9 m) length of pipe for tower. • One 17 ft (5.2 m) length of pipe for tower. • One 15 ft (4.5 m) length of pipe for gin pole. Tower kit, 50 ft • Two 15 ft (4.5 m) lengths of pipe for tower. • One 20 ft (6.1 m) length of pipe for tower. • One 19 ft (5.8 m) length of pipe for gin pole. Auger/anchor TM02 2571 4501 Description Auger/anchor (4 pcs.) Length [ft] Product number 4 (1.
7 GF100 solar panel GF100 solar panel Peak power (Pmax.) 70 [V] Current (Imp) 1.43 [A] Open circuit voltage (Voc) 96 [V] Short circuit current (Isc) 1.7 [A] Reference cell temperature (Tcref) 77 °F (25 °C) Solar irradiation at reference cell temperature (Itref) 1000 [W/m2] 43.7 [lbs] / 19.8 [kg] Shipping volume TM05 0052 0611 100 [W] Voltage (Vmp) Net weight Fig. 33 GF100 solar panel Accessories SQFlex Description 2.8 [ft3] / 0.
8 SQFlex Further product documentation 8. Further product documentation WebCAPS WebCAPS is a Web-based Computer Aided Product Selection program available on www.grundfos.com. WebCAPS contains detailed information on more than 185,000 Grundfos products in more than 22 languages. In WebCAPS, all information is divided into 6 sections: • Catalog • Literature • Service • Sizing • Replacement • CAD drawings.
8 Sizing 0 Further product documentation SQFlex 1 This section is based on different fields of application and installation examples, and gives easy step-by-step instructions on how to • select the most suitable and efficient pump for your installation • carry out advanced calculations based on energy consumption, payback periods, load profiles, life cycle costs, etc. • analyze your selected pump via the built-in life cycle cost tool • determine the flow velocity in wastewater applications, etc.
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