PROPOSED DRAFT INDIAN STANDARD. RECOMMENDED PUMPING SYSTEM FOR WATER SUPPLY PURPOSES PART 3 DOMESTIC PUMPSETS (Third Revision of IS 10804)

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1 Page 1 of 64 PROPOSED DRAFT INDIAN STANDARD RECOMMENDED PUMPING SYSTEM FOR WATER SUPPLY PURPOSES PART 3 DOMESTIC PUMPSETS (Third Revision of IS 10804)

2 Sl Page 2 of 64 Description Scope References Recommended Pumping System Characteristic s of clear cold water Terminology Borewell and Borewell size Openwell Sump Static water depth Draw down Draw down level Submergence Yield Testing Estimation of flow rate and Calculation of total head Estimation of Flow Rate Calculation of Total Head for Electric Monobloc pumpsets Calculation of Total Head for Electric Openwell pumpsets Calculation of Total Head for Electric Borewell pumpsets Calculation of Total Head for Electric centrifugal Jet Monobloc pumpsets Selection of Pumping System Selection of Domestic Pumpsets for Sump or Openwell Application Selection of Domestic Pumpsets of Electric Monobloc pumpsets Selection of Domestic Pumpsets for Borewell Application Page

3 Page 3 of 64 Selection of Domestic Pumpsets of Electric centrifugal Jet Monobloc pumpsets Electric Borewell pumpsets Electric Jet pumpsets Installation details for pumpsets Installation of Domestic Pumpsets for Sump or Openwell Application Installation of Domestic Pumpsets of Electric Monobloc pumpsets Installation of Domestic Pumpsets for Borewell Application Installation of Domestic Pumpsets of Electric centrifugal Jet Monobloc pumpsets Power supply Single or three phase Protection devices for Motor Starters Dry Running Single Phase preventers Earthing Cable Selection Cable Joint Annexure List of Standards A Example for selection of submersible Annexure pumpset for Domestic purpose water B requirement Example for selection of Electric Annexure Monobloc pumpset for Domestic C purpose water requirement Example for selection of Centrifugal Annexure Jet Monobloc pumpset for Domestic D purpose water requirement

4 Annexure List of tables E Annexure List of figures F Page 4 of 64

5 1 SCOPE This standard covers the recommended pumping system for Domestic (Single,Multi story, Apartments and residential townships) application pumpsets consisting of various matching and energy efficient components like centrifugal pump (monoset or coupled pump set being installed on surface above water level and submerged in water), prime mover (electric motor or diesel engine or spark ignition engine), suction and delivery pipes, valve (foot valve or reflux valve or Page 5 of 64 bore valve), Tapers / Expanders and necessary pipe fittings. 2 REFERENCES The standards listed in Annex A contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed in Annex A.

6 3 RECOMMENDED PUMPING SYSTEM Page 6 of 64 components (see Fig.1,Fig 2). Selection of each of the components shall be based on the criteria given against them, so that entire pumping system operates efficiently Different components of pumping system shall conform to the following Indian Standards besides matching with the other. Sl Indian Component Standards Pump: Electric monoset IS 9079:2002 Engine monoset IS 11501:1986 Electric or engine IS 6595 (Part coupled 1):2002 Electric monoset - Regenerative IS 8472 : pump Electric monoset IS : Jet pump 1997 Submersible IS 8034 : 2002 pump sets Criteria The pump shall be selected in such a way that it shall operate at near maximum pump efficiency during peak demand period in the ranges of discharge and head. It should also be capable to discharge in summer season. Open well IS ; submersible pump 1994 sets Prime mover: The prime mover IS 7538:1996 rating shall be Electric motor 2. IS :1998 equal to or more than the power Spark ignition IS 7347:1974 Spark ignition engine

7 Page 7 of 64 Compression ignition engine IS 11170: Piping system IS 1239 (Part 1) : 2004 IS 4984 : 1995 IS 4985 : 2000 IS : 1987 IS 1239 (Part 2) : 2011 IS (Part 8) : 2009 IS : Tapers/Expanders IS 14263:1995 engine consumption in the entire operating range The sizes of pipes shall be selected in such a way that the friction head (hf) shall not exceed 10 percent total equivalent length of piping system up to delivery point. The data given in Fig. and Tables shall be used to determine approximate sizes of pipes. If the delivery distance is more than 3 m, then larger pipe sizes shall be used to reduce the friction losses. The size of the eccentric tapers for suction side and size of the concentric

8 5. Bore valve and reflex valve 6. Pipe fittings 7. Code of Practice Page 8 of 64 tapers for the delivery side shall be selected suitable to the recommended pipe sizes based on the pump flow rate Q at the duty point. Size of valve shall be equal or IS : greater than the 1986 size of discharge pipe. The size of bends and other IS 1239 (part fittings shall be 2) :2011 matching with IS (part the size of the GI 3) : 2009 pipes, HDPE IS : pipes or RPVC 1992 pipes to be used in piping system. This Standard lays down general guidelines for selection, IS installation, operation and maintenance of Borewell submersible

9 8. Code of Practice Page 9 of 64 IS : 1998 pumpsets covered in IS This Standard lays down general guidelines for selection, installation, operation and maintenance of Borewell submersible pumpsets covered in IS Notes: Due to design considerations and constraints, pump suction and delivery size may not always match with the recommended pipe size. In such cases, suitable expanders shall be used between pump and pipes to fit the recommended pipe size. 4.0 CHARARECTERISTICS WATER OF Clear, cold water shall mean characteristics specified below: a. Turbidity 50 ppm, : (silica scale) Max CLEAR, COLD water having the

10 b. c. Chlorides Total solids Page 10 of 64 : : 500 ppm,max 3000 ppm,max 6.5 to C,Max 1.004, Max 300,Max d. ph : e. Temperature : Specific f. : gravity Hardness g. (drinking : water) Note If the characteristics of water differ from these specifications, the pump constructional details shall be agreed between the manufacturer / supplier and the user. In such cases, the characteristics shall be specified in the order. 5.0 TERMINOLOGY Prime Mover Motor Pump

11 Page 11 of 64 Centrifugal pump Regenerative pump Jet pump Pumpset Sump 5.1 Borewell and Borewell size Borewell is a very deep narrow hole in the ground made in order to get water. The borewell should be straight in relation to the pumpset, the borewell should be tested throughout its depth with a pattern with overall length and diameter equal to the maximum dimensions of the pumpset. 5.2 Openwell It covers ordinary open wells of varying dimension dug or sunk from the ground surface into water bearing stratum to extract water. These are broadly masonry wells and dug-cum bore wells. All such schemes are of private nature belonging to individual cultivator. 5.3 Static water depth It is the depth of water level below the ground level when the pump is not in operation. 5.4 Draw-down

12 Page 12 of 64 It is the elevation difference between the depth of static water level and the consistent standing water level in the tube well or rock well during pumping operation. 5.5 Draw-down level It is depth of consistent standing water level below the ground level in the tube well or rock well during pumping operation. 5.6 Submergence It is the minimum height of water level after draw-down above the suction casing, while running. 6.0 Yield Testing It is recommended to perform yield testing for the borewell.yield testing is the process to estimate the yield of a borewell. This will assist in selection of a suitable capacity pump (lower capacity pumpset) without overpumping of the borewell. This test shows the balance between amount of water that can be pumped out of the borewell and the amount of water that recharges back into the borewell from the surrounding groundwater source. This test requires continuous pumping of the borewell for an extended period of time. During the pumping period, measurements are made to find out the rate at which the water is being pumped out of the borewell and the depth to which the water level is lowered in the well as the result of pumping known as Draw down Level. Refer Fig 13 for the borewell yield testing using test pumpset. 7.0 Estimation of Flow rate and Calculation of Total Head.

13 Page 13 of Estimation of Flow rate The estimation of flow rate shall be calculated the water requirement per day. 7.2 Calculation of Total Head The Flow rate (Discharge rate) Q of water required shall be determined as per the guidelines given in IS 9694 (Part 1). In case, yield is less, operating hours of the pumpset shall be increased to match the yield PIPE FRICTIONAL HEAD LOSSES Pipe Frictional losses are pressure head losses which occur during the water flow in any kind of conduit pipe. The friction losses in the piping system depends on the following factors a) Pipe inner diameter b) Material and inner surface roughness of Pipe c) Length of pipe line d) Number of bends, elbows, valves and other pipe fittings Based on the flow rate of water required and material of pipe, delivery pipe size shall be selected from Table 4, 5, 6 and 7 to limit the maximum friction losses in pipes to below 10% of the pipe length. In case, water is to be delivered to a long distance, friction losses in delivery pipe may have to be limited to much lower value (may be as low as 0.5 to 1 % depending on the length) to limit the Total Head and thus to limit the prime mover rating and thereby Energy Bill.

14 Page 14 of 64 Thus in such cases larger size delivery pipes is to be selected depending on Cost Economics The length of piping required shall be determined from the actual delivery pipe length from pumpset to delivery point and length of straight pipe giving equivalent friction head loss in pipe fittings, valves as per Table 11. Refer Fig The friction losses in the pipes shall be computed for the pipe length worked out as per 7.2.3, based on Flow rate (Q) and pipe size (Refer Tables 8, 9 and 10 or figure 2 and 3) For losses in velocity head Refer Tables 8, 9 and Total head (H) shall be calculated by adding static head (hst) (draw down level elevation height upto delivery point), friction losses in pipes and pipe fittings (hfs) and discharge velocity head. H=hst+hfs+Discharge velocity head 8.0 SELECTION OF PUMPING SYSTEM 8.1 The pumpset and pumping system shall be selected with due reference to Tables 1, 2 and 3 and / or the field requirement. The type of pumpset shall be openwell or borewell submersible pumpset as may be required. 8.2 Select suitable pipe material and pipe size for column pipe, delivery pipe as explained in 7.2

15 Page 15 of Calculate total head as explained in Choose the type of pumpset to be used. i.e. a borewell pump or openwell pump according to the well type. 8.5 Select suitable pump based on calculated Head and Flow rate. Pump shall be selected such that, the operating point lies close to the best efficiency point (BEP) on the pump characteristics curve as computed in Rating of the Prime mover Prime mover rating is to be selected such that it does not get overloaded in the entire operating head range with a minimum of 20% margin. 9.0 Power supply 9.1 Preferred voltage and frequency Preferred Voltage The preferred rated voltage shall be 415 V for three phase motors and 240 V for single phase motors (See IS 12360) Preferred Frequency The preferred rated frequency shall be the standard frequency of 50Hz 9.2 Voltage and Frequency Variation

16 Page 16 of The motors shall be capable of delivering rated output with: a. The terminal voltage differing from this rated value by not morethan ± 6 percent. b. The rated frequency differing from its rated value by not morethan ±3 percent : and c. Combination of (a) and (b) The motors shall be capable of delivering rated output with: a. The terminal voltage differing from this rated value by not morethan + 6 percent - 15 percent. b. The rated frequency differing from its rated value by not morethan ±3 percent : and c. Combination of (a) and (b) Cl applicable for Category A submersible pumpset Cl applicable for Category B submersible pumpset 10.0 Protection Devices for motor 10.1 Starters The submersible motor should be operated as per manufacturer recommendation of starting devices like DOL, Star Delta or Auto transformer Starter. The Starter

17 Page 17 of 64 should have indicting instruments like Ammeter and Voltmeter of suitable range, over load indicators for each phase. The overload protection should be preset as near as possible to the operating current value as and never higher than the rated motor current. The enclosure should be water tight, dust proof construction and it should be earth protected. The control switch gears and wires should have a sufficient rating to carry the operating current. The insulation material should withstand at extreme temperature limits. The motor should be connected in accordance with wiring diagrams shown inside the controller. The Starter should be mounted vertically Dry running A special device with a relay and electrodes to be provided to protect the pumpset from dry running it should be used in all cases where the water level varies widely. Location of the electrode shall be at minimum of 1 metre from the pump Discharge Outlet Level Single phase preventers Preventer must be installed in all three phase pumpset panel to protect the winding from burn outs due to the absence of any one of the phase out of three phase supply. The phase failure occurs due to blown fuse or breaking conductor or any kind of discontinuity in the electric power transmission. It is a condition of heavy imbalance and motor draws more current.

18 Page 18 of Earthing Motor shall have suitable provision for earthing to facilitate earthing of motor as per IS 3043:1987 at the time of installation. In case GI pipes are used for the purpose of earthing the motor, the earthing connection may be made to supporting pipe clamp Cable Selection: The correct cable size to be selected as per table xx and Table xx From the borewell entry point to panel board a higher size cable to be selected to avoid excess voltage drop. The extra cable should not be placed in coil form Cable Joint Joining submersible pumpset cable is part of every submersible pumpset installation because every submersible pump installation has at least one joint between the motor leads and the pump cable. Although it some-times is necessary to joint two lengths of pump cable together in very deep-set applications, it is always better to use a single length of pump cable from the surface to the motor lead. A good joint is watertight, has good electrical conductivity and is mechanically strong.

19 Page 19 of 64 Typical cable joints as per Fig x. Table 1 Permissible Ranges of Volume Rates of Flow in l/s Through Galvanized Steel Pipes to Limit Friction Losses to 10 Percent of the Pipe Length (IS 1239, C = 140) Pipe Grade Nominal Outside Light Medium Heavy Dia Rate of Flow Rate of Flow Rate of Flow mm l/s l/s l/s Table 2 Permissible Ranges of Volume Rates of Flow in l/s Through RPVC Pipes to Limit Friction Losses to 10 Percent of the Pipe Length (IS 4985, C = 150) Pipe Grade Nominal Class 2 (0.25 Class 3 (0.4 Class 4 (0.6 Outside MPa) MPa) MPa) Dia Rate of Flow Rate of Flow Rate of Flow mm l/s l/s l/s

20 Page 20 of Table 3 Permissible Ranges of Volume Rates of Flow in l/s through HDPE Pipes to Limit Friction Losses to 10 Percent of the Pipe Length (IS 4984, C = 150) Pipe Grade Nominal Class 2 (0.25 Class 3 (0.4 Class 4 (0.6 Outside MPa) MPa) MPa) Dia Rate of Flow Rate of Flow Rate of Flow mm l/s l/s l/s Table 4 Permissible Ranges of Volume Rates of Flow in l/s Through RPVC Pipes to Limit Friction Losses to 10 Percent of the Pipe Length (IS 12231, C = 150) Pipe Grade Nominal Outside Type 1 W (0.4 MPa) Dia Rate of Flow mm l/s Type 2 W (0.6 MPa) Rate of Flow l/s

21 Page 21 of Table 5 Frictional losses in metres per 100 metre pipe length and velocity head in metres for New G.I.Pipe of medium series Nominal Pipe Size in mm Inside Dia mm Discharge F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. LPS Table 6 Frictional losses in metres per 100 metre pipe length and vel metres for RPVC Pipe of Class 3 Nominal Pipe Size in mm

22 Page 22 of 64 Inside Dia mm Discharge F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. F.L. LPS Table 7 Frictional losses in metres per 100 metre pipe length and velocity head in metres for HDPE Pipe of Class PN 4 Nominal Pipe Size in mm Inside Dia mm Discharge F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. F.L. V.H. LPS TABLE 8 LENGTH OF STRAIGHT PIPE IN METRES GIVING EQUI IN PIPE FITTINGS, VALVES, Etc SIZE SLUICE GL OF LONG 45 / GATE STANDARD MEDIUM VA PIPE RADIUS Degree TEE VALVE ELBOW ELBOW FU IN ELBOW ELBOW FULL OP mm OPEN

23 Page 23 of TABLE 9 DIMENSIONS OF UNPLASTICIZED PVC PIPES (IS: ) All dimensions in millimeters. Wall Thickness Nominal Mean Outside Type 1 W (0.4 Type 2 W (0.6 Diameter Outside MPa) MPa) Diameter Average Individual Average Individual ( Nominal Values Values Values Values Size) min max max min max max min max (1) (2) (3) (4) (5) (6) (7) (8) (9)

24 Page 24 of NOTE 1 The table is based on metric series of pipe dimensions given in ISO 161/1 in respect of pipe dimensions. NOTE 2 The wall thickness of pipes is based on a safe working stress of 8.6 Mpa at 27 C and the working pressure gets reduced at sustained higher temperature. Occasional rise in temperature as in summer season with concurrent corresponding reduction in temperature during night has no deleterious effect on the life and working pressure of the pipes considering the total life of pipes.

25 Page 25 of 64 Nominal Outside Outside Mean Diameter Diameter Outside At Any (Nominal Diameter Point Size) min max (1) (2) (3) Table 10 Dimensions of Unplasticised PVC Pipes (IS: 4985 : 2000) All dimensions in millimeters Class MPa Ang min max min max Max (4) (5) (6) (7) (8) Wall Thickness Class MPa Ang min max Max (9) (10) (11) Class MPa Ang min max Max (12) (13) (14) Class MPa Ang A min max Max M (15) (16) (17) (

26 Page 26 of 64 NOTES 1. The table is based on metric series of pipe dimensions given in ISO 161/1 in respect of pipe dimen 2. The wall thickness of pipes is based on a safe working stress of 8.6 MPa at 270 C and the working sustained higher temperatures occasional rise in temperature as in summer season with concurrent corresponding reduction in temperature during nig on the life working pressure of the pipes Considering the total life of pipes. For class 1,2 and 3 of all sizes, this requirement need not to be satisfied as the ratio of minimum wall diameter does not exceed in these cases. Nominal Table 11 Wall Thickness of Pipes for Material Grade PE 63 (IS 4984 : 1995) All dimensions in millimeters. Wall Thickness Of Pipes for Pressure Ratings of

27 Dia DN (1) Page 27 of 64 PN 2.5 PN 4 PN 6 PN 8 PN 10 PN 12.5 min max min max min max min max min max min max (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) PN 16 min max (14) (15) Table 12 Wall Thickness of Pipes for Material Grade PE 80 (IS 4984 : 1995) All dimensions in millimeters. Wall Thickness of Pipes for Pressure Ratings of Nominal Dia PN 2.5 PN 4 PN 6 PN 8 PN 10 PN 12.5 DN Min Max Min Max Min Max Min Max Min Max Min Max (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) PN 16 Min Max (14) (15)

28 Nominal Dia DN (1) Page 28 of Table 13 Wall Thickness of Pipes for Material Grade PE 100 (IS 4984 : 1995) All dimensions in millimeters. Wall Thickness Of Pipes For Pressure Ratings of PN 6 PN 8 PN 10 PN 12.5 PN 16 Min Max Min Max Min Max Min Max Min Max (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)

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31 Page 31 of 64 Notes 1. For overall efficiency of the pumpset multiply pump efficiency by corresponding motor efficiency factor as given in the Table x of motor ratings. 2. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. 3. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x Minimum efficiency in percent for monoset pump ( 2 pole, 50Hz,for volume rate of flow

32 Page 32 of 64 above 16 Litres per second) (Ref. IS 9079 Fig 3)

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34 Page 34 of 64 Notes 1. For overall efficiency of the pumpset multiply pump efficiency by corresponding motor efficiency factor as given in the Table x of motor ratings. 2. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. 3. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x Minimum efficiency in percent for monoset pump ( 2 pole, 50Hz,for volume rate of flow Up to including 16 Litres per second) (Ref. IS 9079 Fig 4)

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37 Page 37 of 64 Notes 1. For overall efficiency of the pumpset multiply pump efficiency by corresponding motor efficiency factor as given in the Table x of motor ratings. 2. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. 3. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x Minimum efficiency in percent for monoset pump ( 4 pole, 50Hz,for volume rate of flow above 16 Litres per second) (Ref. IS 9079 Fig 5)

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39 Page 39 of 64 Notes 1. For overall efficiency of the pumpset multiply pump efficiency by corresponding motor efficiency factor as given in the Table x of motor ratings. 2. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. 3. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x Minimum efficiency in percent for monoset pump ( 4 pole, 50Hz,for volume rate of flow Up to including 16 Litres per second) (Ref. IS 9079 Fig 6)

40 Page 40 of 64 NOTES 1. The efficiency in figure represents three or more stages: a) For two stage pump, multiply efficiency given by a factor b) For single stage pump, multiply efficiency given by a factor The motor efficiency factor of motor ratings not given in the Table 19,20,21,22 and 23 shall be as declared by the manufacturer. The motor efficiency factor of motors used with pumpsets suitable for bore sizes more than 200 mm shall be as declared by the manufacturer but it shall be not less than the motor efficiency factor of motors of same rating for 200 mm bore size. 3. For overall efficiency of the pumpset, multiply pump efficiency by corresponding motor

41 Page 41 of 64 efficiency factor as given in the Table 19,20,21,22 and The efficiency chart includes non-return valve losses. 5. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x MINIMUM EFFICIENCY IN PERCENT FOR 2-POLE BOREWELL SUBMERSIBLE PUMPSET (Ref. IS 8034: 2002 including amendment 3)

42 Page 42 of 64 NOTES 1. The efficiency in figure represents three or more stages: a) For two stage pump, multiply efficiency given by a factor b) For single stage pump, multiply efficiency given by a factor The motor efficiency factor of motor ratings not given in the Table 19,20,21,22 and 23 shall be as declared by the manufacturer. The motor efficiency factor of motors used with pumpsets suitable for bore sizes more than 200 mm shall be as declared by the manufacturer but it shall be not less than the motor efficiency factor of motors of same rating for 200 mm bore size.

43 Page 43 of For overall efficiency of the pumpset, multiply pump efficiency by corresponding motor efficiency factor as given in the Table 19,20,21,22 and The efficiency chart includes non-return valve losses. 5. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x MINIMUM EFFICIENCY IN PERCENT FOR 2-POLE BOREWELL SUBMERSIBLE PUMPSET (Ref. IS 8034: 2002 including amendment 3)

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45 Page 45 of The efficiency in figure represents three or more stages: a) For two stage pump, multiply efficiency given by a factor b) For single stage pump, multiply efficiency given by a factor The motor efficiency factor of motor ratings not given in the Table 24 shall be as declared by the manufacturer. 3. For overall efficiency of the pumpset, multiply pump efficiency by corresponding motor efficiency factor as given in the Table The efficiency chart includes non-return valve losses. 5. Efficiency of the pumpsets having declared duty points beyond the efficiency lines on either side may be declared by the manufacturer and applicable tolerance applied. Where the point lies in between the efficiency lines, the higher value is taken as minimum efficiency. Fig. x Minimum efficiency in percent for openwell submersible pumpsets of 2 pole,50hz (Ref. IS 14220:1994)

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47 Page 47 of 64 Fig x - Typical field installation of bore well submersible pumpset FIG x - Typical field installation of open well submersible

48 Page 48 of 64 pumpset

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50 Page 50 of 64 After starting the test pumpset, the water level in the borewell which is at the "SWL" in the beginning will go to "DDL" level after 30 minutes of time (approx.) and stabilize there. At that time, if the control valve is closed and "PGR"Pressure Gauge Reading (in m) is noted down, it will show the balance of shut-off head of the test pumpset after deducting the DDL (in m). Pressure Gauge Reading (m) = Shut off Head of the test pump (m) at the Ground level - Draw Down Level (m) PGR = SOH DDL Draw Down Level (m) = Shut off Head of the test pump (m) - Pressure Gauge reading (m) at the ground level Now, the control valve is fully opened and the water flow is channeled into a 90 V-Notch plate and the "head over the notch" is noted down. From the formula given in the IS Cl , volume rate of flow is calculated. FIG x - Typical submersible pumpset yield testing Table 14CABLE SELECTION FOR SINGLE PHASE MOTOR MAXIM LENGTH OF

51 Page 51 of 64 COPPER CABLE (IS: 694 : 1990) For Supply Voltage Condition w Variation of ± 3% - 50Hz. MOTOR RATING CABLE SIZE SQUARE MILLIMETRES VOLTS kw HP / VOLT Hz Table 15 CABLE SELECTION FOR THREE PHASE MOTOR MAXIMU COPPER CABLE (IS: 694 : 1990) For Supply Voltage Condition with V - 50Hz MOTOR RATING VOLTS kw HP CABLE SIZE SQUARE MILLIMETRES / VOLT Hz

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53 Page 53 of 64 Fig x Cable joining

54 Page 54 of 64 Table 16 - Motor Efficiency factor for 2-Pole, 240 Volt, Single Phase, Capacitor Start & Run (CSR), Capacitor Start & Capacitor Run (CSCR), Water Filled Submersible Motors for bore size minimum 100mm and maximum OD of Motor 98mm Motor Motor Efficiency NOTES: Rating factor (kw) a. For Motors of other ratings below 0.37 kw (1) (2) the performance values shall be declared by the manufacturer b. Motor efficiency factors shall be applied for Fig. x and Fig. x to arrive the minimum overall efficiency of the pumpset. c. For arriving minimum overall efficiency of the pumpset, multiply pump efficiency by corresponding motor efficiency factor. Table 17 - Motor Efficiency factor for 2-Pole, 240 Volt, Single Phase Capacitor Start & Run (CSR), Capacitor Start & Capacitor Run (CSCR), Oil Filled / or encapsulated oil filled, Submersible Motors for bore size minimum 100mm & maximum OD of Motor 98mm.

55 Motor Rating (kw) (1) Motor Efficiency factor (6) Page 55 of 64 NOTES ; a. For Motors of other ratings below 0.37 kw the performance values shall be declared by the manufacturer b. Motor efficiency factors shall be applied for Fig. x and Fig. x to arrive the minimum overall efficiency of the pumpset. c. For arriving minimum overall efficiency of the pumpset, multiply pump efficiency by corresponding motor efficiency factor. Table 18 - Motor Efficiency factor for 2-Pole, 415 Volt, 50 Hz, Three Phase, Water Filled Submersible Motors for openwell Submersible pumpset. Motor NOTES ; Motor Efficiency a. Motor efficiency factor for Rating factor Motors ratings less than 1.1 (kw) kw and exceeding 15 kw (1) (2) rating shall be as declared by the manufacturer b. However for motors above kw rating, the declared value of efficiency shall not be lesser than 15 kw value c. Motor efficiency factors shall be applied for Fig. x to arrive the minimum overall efficiency of the pumpset.

56 Page 56 of 64 d. For arriving minimum overall efficiency of the pumpset, multiply pump efficiency by corresponding motor efficiency factor. Table 19 - Motor Efficiency factor for monoset pumps (2 pole 50 Hz) Motor Efficiency NOTES: factor Motor Rating Single Three Phase Phase (kw) Table 20 - Motor Efficiency factor for (4 pole 50 Hz) Motor Rating Motor Efficiency factor Single Three Phase Phase NOTES:

57 (kw) Sl Page 57 of ANNEXURE A LIST OF REFERENCE STANDARDS IS Description 694 : 1990 Polyvinyl chloride insulated unsheathed

58 (Part 1): (Part 2): (Part 1) : (Part 2) : : : Page 58 of 64 and sheathed cables/cords with rigid and flexible conductor for rated voltages up to and including 450/750v Mild steel tubes, tubulars and other wrought steel fittings : Part 1 Mild steel tubes (fifth revision) Mild steel tubes, tubulars and other wrought steels fittings. Part 2 Mild steel tubulars and other wrought steel pipe fittings (third revision) Code of practice for construction and testing of tubewells / Borewells Part 1 Construction Code of practice for construction and testing of tubewells / Borewells Part 2 Testing Specification for high density polyethylene pipes for potable water supplies; sewage and industrial effluents (third revision) Specification for unplasticised PVC pipes for potable water supplies (second revision) Horizontal centrifugal pumps for clear, 6595(Part cold water: Part 1 1):2002 Agricultural and rural water supply purposes (second revision) Performance of small size spark ignition engines for 7347:1974 agricultural sprayers and similar applications

59 Page 59 of : 2002 Submersible pumpsets (first revision) Monoset pumps for clear, cold water for 9079:2002 agricultural purposes (first revision) 9283 : 1995 Motors for submersible pumpsets Code of practice for the selection, installation, operation and maintenance 9694 (Part of horizontal centrifugal pumps for 1) : 1987 agricultural applications : Part 1 selection ( first revision) Specification for fabricated PVC fittings (Part for potable water supplies : Part 8 8) : 1988 Specific requirements for 90 degree bends ( first revision) : Testing set up for agricultural pumps 2002 Performance requirements for constant speed compression ignition (diesel) 11170:1985 engines for agricultural purposes (up to 20 kw) Engine monoset pumps for clear, cold, 11501:1986 fresh water for agricultural purposes Specification for Unplasticised PVC : Pipes for use in Suction and Delivery 1987 lines of Agricultural pumpsets UPVC pipe fittings for use with UPVC : pipes in the suction and delivery lines of 1992 agricultural pumps specification : Openwell submersible pumpsets 1994

60 : 1998 Page 60 of 64 This Standard lays down general guidelines for selection, installation, operation and maintenance of Borewell submersible pumpsets covered in IS ANNEXURE B EXAMPLE FOR SELECTION OF SUBMERSIBLE PUMPSET FOR DOMESTIC WATER SUPPLY REQUIREMENT ANNEXURE C EXAMPLE FOR SELECTION OF ELECTRIC MONOBLOC PUMPSET FOR DOMESTIC WATER SUPPLY REQUIREMENT ANNEXURE D EXAMPLE FOR SELECTION OF ELECTRIC CENTRIFUGAL JET MONOBLOC PUMPSET FOR DOMESTIC WATER SUPPLY REQUIREMENT

61 Sl. Table Table Table Table Table Table Table Table Table Table Table Table Page 61 of 64 LIST OF TABLES DESCRIPTION Permissible Ranges of Volume Rates of Flow in l/s Through Galvanized Steel Pipes to Limit Friction Losses to 10 Percent of the Pipe Length Permissible Ranges of Volume Rates of Flow in l/s Through RPVC Pipes to Limit Friction Losses to 10 Percent of the Pipe Length Permissible Ranges of Volume Rates of Flow in l/s through HDPE Pipes to Limit Friction Losses to 10 Percent of the Pipe Length Permissible Ranges of Volume Rates of Flow in l/s Through RPVC Pipes to Limit Friction Losses to 10 Percent of the Pipe Length Table 8 Frictional losses in metres per 100 metre pipe length and velocity head in metres for New G.I.Pipe of medium series Frictional losses in metres per 100 metre pipe length and velocity head in metres for RPVC Pipe of Class 3 Frictional losses in metres per 100 metre pipe length and velocity head in metres for HDPE Pipe of Class PN 4 Length of straight pipe in metres giving equivalent head loss in pipe fittings, valves, etc Dimensions of unplasticised PVC pipes

62 Table Table Table Table Table Table Table Table Table Table Table Page 62 of 64 Dimensions of Unplasticised PVC Pipes Wall Thickness of Pipes for Material Grade PE 63 Wall Thickness of Pipes for Material Grade PE 80 Wall Thickness of Pipes for Material Grade PE 100 Cable selection for single phase motor maximum length of copper cable Cable selection for three phase motor maximum length of copper cable Motor Efficiency factor for 2-Pole, 415 Volt, Three Phase, Water Filled Submersible Motors for bore size minimum 100mm and maximum OD of Motor 98 mm. Motor Efficiency factor for 2-Pole, 415 Volt, Three Phase, Water Filled Submersible Motors for bore size minimum 150mm and maximum OD of Motor 146mm Motor Efficiency factor for 2-Pole, 415 Volt, Three Phase, Water Filled Submersible Motors for bore size minimum 200mm and maximum OD of Motor 196mm Motor Efficiency factor for 2-Pole, 240 Volt, Single Phase, Capacitor Start & Run (CSR), Capacitor Start & Capacitor Run (CSCR), Water Filled Submersible Motors for bore size minimum 100mm and maximum OD of Motor 98mm Motor Efficiency factor for 2-Pole, 240 Volt, Single Phase Capacitor Start & Run (CSR),

63 Table Table Page 63 of 64 Capacitor Start & Capacitor Run (CSCR), Oil Filled / or encapsulated oil filled, Submersible Motors for bore size minimum 100mm & maximum OD of Motor 98mm. Motor Efficiency factor for 2-Pole, 415 Volt, 50 Hz, Three Phase, Water Filled Submersible Motors for openwell Submersible pumpset. Motor Efficiency factor for openwell submersible pumpsets of 4 pole,50hz (As per IS 14220:1994) LIST OF FIGURES Sl. Figure Figure Figure Figure Figure Figure Figure DESCRIPTION Friction head loss selection chart for GI pipes Friction head loss selection chart for rigid PVC pipes Friction head loss selection chart for concrete pipes Cable joining Minimum efficiency in percent for 2-pole submersible pumpset (Ref. IS 8034: 2002 including amendment 3) Minimum efficiency in percent for 2-pole submersible pumpset (Ref. IS 8034: 2002 including amendment 3) Minimum efficiency in percent for openwell submersible pumpsets of 2 pole,50hz (Ref. IS

64 Figure Figure Figure Figure Figure Figure Page 64 of :1994) Minimum efficiency in percent for openwell submersible pumpsets of 4 pole,50hz (Ref. IS 14220:1994) Typical field installation of bore well submersible pumpset Typical field installation of open well submersible pumpset Borewell System curve, Pump Performance curve and Operating point Pump selection and erection diagram for the example in Annexure B Typical submersible pumpset yield testing