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Deep-Well Motors

Intended use

Electric motors for propelling deep well pumps are designed to work submersed as a drive ensuring variable torque in deep well pumps. All deep-well motors produced by Hydro-Vacuum SA can be powered through frequency converters with built-in protections against: overcurrent, power supply voltage drop, phase dropout, work with a load too low. Motors at standard settings must not be operated at a frequency higher than their rated values i.e. 50Hz. In order to correctly protect an electric motor, install du/dt or sinusoidal filters (depending on the length of the power supply cable), preventing harmful overvoltage and disturbances.

The deep-well motors operate in systems used for:

  • Potable water delivery;
  • Wells, at households, water supply plants, and in agriculture;
  • Water drainage, pressure rising and irrigation;
  • Industrial water delivery;
  • Operation in heat pump exchanger systems;
  • Submersed operation not exceeding 200 meters.

Advantages

4" motors

  • Filling a motor with dielectric, non-toxic liquid, resistant to freezing
  • Motor shaft mechanical sealing
  • The shaft end consistent with the international standard, the connection according to NEMA

Motors 6", 8" and 10"

  • The stator windings are made of coil wires with thermoplastic insulation of PVC (SMS) or PA-2 PE (SMP) that increases a motor's service life, as compared to winding insulation made of PP.
  • The motor's shaft is mounted with the use of radial slide bearings and one bearing transferring axial forces, it is a modern segmented structure, the so-called Hard bearing, where friction elements are made of carbon and steel.
  • Stable and reliable connection of the motor housing with the body that would prevent its ripping off in the well.
  • The rotor shaft with the rotor end are friction welded and then machined, which prevents tearing off of the rotor end.
  • According to international standards, the connection according to the NEMA standard for motors 6" and 8".
  • SMP type motors have standard stator windings made of wires with corrosion protection, resistant to increased temperature (PA-2 PE).

Construction

4” motors

Deep-well motor type SMS.4. It is an asynchronous, squirrel-cage motor. It is designed as a submersed motor with the stator winding made of coil wire with varnish insulation, filled with dielectric, non-toxic liquid that mediates in discharging heat from internal losses in the motor to the environment, in addition it lubricates the rolling bearings of the motor where the motor's shaft is mounted. The liquid is mineral oil resistant to freezing. High-quality mechanical shaft sealing prevents pumped medium from accessing to the motor. Changes in the volume of the liquid filling the motor resulting from temperature are compensated by the expansion bellows in the bottom part of the motor. The bottom rolling bearing of the motor transfers axial forces to the mass of the rotating motor-pump system along with hydraulic pressure from the pump. The motor shaft's end along with the connection conform to the NEMA standard

Motors 6", 8" and 10"

Deep-well SMS or SMP motor is a three-phase asynchronous, squirrel-cage motor. It is designed as a submersed motor with the stator winding made of coil wire in insulation made of thermoplastic materials, with stainless steel casing. The windings of these motors can be re-winded.

The motor is filled with a mixture of propylene glycol with water in the ratio of 1: 1 which ensures resistance to freezing at temperatures up to - 15oC. Propylene glycol is a hygroscopic liquid, not harmful to humans and may be biologically neutralized (it decomposes). At request, the motor may be filled with clean water.

Submersed SMS and SMP motors are produced in three-phase 50 Hz and 60 Hz version with voltages up to 500 V. Electric energy is supplied to a motor by means of connected electrical deep well conductors.

Dynamically balanced rotor is mounted in lubricated liquid slidable sleeves. Any axial forces of the pump and the motor are transferred through its bearing, independent from the rotation direction, with tilting segments (Kingsburry bearing). Auxiliary axial bearing prevents shifting of the pump upwards in case of change in axial force return.

High quality mechanical end face seal prevents the pumped medium from accessing into the motor. Changes in the volume of the liquid that fills the motor are balanced by expansion vessel in the bottom part of the motor. The motor is protected by overpressure valve.

Optionally, the motor's winding has a PT-100 sensor installed, led outside of the motor with three-wire conduit. The conduit can be extended, the connection point is protected against water. Ensure also insulation between the conduit wires. Connect the sensor according to the temperature transducer manual for three-wire arrangement. Typically, the conduit contains two red wires and one white wire. The sensor is connected to the red and white wires. Double red wire enables resistance compensation of the wire in the transducer, if it makes it possible.

Technical specification

Engine type Nominal power
Pn
Nominal voltage
Un
Rated current
In
Start-up current
Ia
Rotational speed
n
Efficiency
Ƞ
Power coefficient
cosø
Condenser capacity Water temperature Cable cross-section Cable length Type of motor protecting device
kW V A - % min-1 - µF oC mm2 m -
SMS-4 0,37 230 3,7 12 2840 53 0,95 16 35 4x1,5 1,7 1PC
SMS-4 0,55 230 4,3 15 2840 62 0,9 20 35 4x1,5 1,7 1PC
SMS-4 0,75 230 5,7 20 2840 64 0,9 25 35 4x1,5 1,7 1PC
SMS-4 1,1 230 7,8 32 2850 68 0,9 35 35 4x1,5 1,7 1PC
SMS-4 1,5 230 9,8 38 2850 73 0,9 40 35 4x1,5 1,7 1PC
SMS-4 2,2 230 15 46 2820 72 0,88 55 35 4x1,5 2,5 2PC

Engine type Nominal power
Pn
Nominal voltage
Un
Rated current
In
Start-up current
Ia
Rotational speed
n
Efficiency
ƞ
Power coefficient
cosø
Water temperature Cable cross-section Cable length Type of motor protecting device
kW V A - % min-1 - oC mm2 m -
SMS-4 0,37 400 1,2 5 2820 60 0,75 35 4x1,5 1,7 UZS.4
SMS-4 0,55 400 1,6 7 2830 64 0,78 35 4x1,5 1,7 UZS.4
SMS-4 0,75 400 2,1 9 2830 66 0,78 35 4x1,5 1,7 UZS.4
SMS-4 1,1 400 2,7 12 2840 70 0,84 35 4x1,5 1,7 UZS.4
SMS-4 1,5 400 3,6 14 2840 72 0,84 35 4x1,5 1,7 UZS.4
SMS-4 2,2 400 5,4 22 2840 71 0,83 35 4x1,5 2,5 UZS.4
SMS-4 3 400 7,5 43 2850 73 0,8 35 4x1,5 2,5 UZS.4
SMS-4 4 400 9,9 49 2855 75 0,8 35 4x1,5 2,5 UZS.4
SMS-4 5,5 400 13,8 65 2850 75 0,8 35 4x1,5 2,5 UZS.4
SMS-4 7,5 400 19 87 2850 76 0,8 35 4x1,5 2,5 UZS.4

Engine type Nominal power
Pn
Nominal voltage
Un
Rated current
In
Power coefficient
cosø
Efficiency
ƞ
Rotational speed
n
Motor length
L
Motor weight Type of motor protecting device
kW V A - % min-1 mm kg    
SMS-6 1,5 400 5 0,87 - 2827 630 46 UZS.4.03 -
SMS-6* 2,2 400 7,7 0,7 66,2 2950 630 46 UZS.4.04 UZS.5.01
SMS-6* 3 400 9,2 0,78 68,5 2950 630 46 UZS.4.05 UZS.5.02
SMS-6* 4 400 10,3 0,84 70,6 2890 630 46 UZS.4.06 UZS.5.03
SMS-6* 5,5 400 12,9 0,87 73,3 2868 630 46 UZS.4.07 UZS.5.04
SMS-6* 7,5 400 17,5 0,83 75,9 2863 652 47,5 UZS.4.08 UZS.5.05
SMS-6* 9,2 400 21,8 0,84 76,1 2850 693 52 UZS.4.09 UZS.5.06
SMS-6 / SMP-6 11 400 25,2 0,84 78,2 2856 730 56,5 - UZS.5.07
SMS-6 / SMP-6 13 400 28,5 0,86 79,3 2860 781 62 - UZS.5.08
SMS-6 / SMP-6 15 400 33,4 0,83 80,5 2867 831 67 - UZS.5.08
SMS-6 / SMP-6 18,5 400 39,9 0,82 83,2 2863 882 73 - UZS.5.09
SMS-6 / SMP-6 22 400 47,6 0,84 83,7 2852 981 84,5 - UZS.5.10
SMS-6 / SMP-6 26 400 54,2 0,85 83,2 2841 1031 90 - UZS.5.11
SMS-6 / SMP-6 30 400 62 0,86 84 2853 1111 99 - UZS.5.12
SMS-6 / SMP-6 37 400 73,1 0,89 84,7 2831 1195 108 - UZS.5.12
SMP-8 15 400 35 0,81 - 2933 930 121 - -
SMP-8 18,5 400 40 0,82 - 2905 930 121 - -
SMP-8 22 400 47,8 0,85 82,6 2905 930 121 - UZS.5.10
SMP-8 26 400 55 0,86 80 2887 1029 143 - UZS.5.14
SMP-8 30 400 63,2 0,85 84,1 2928 1075 142 - UZS.5.12
SMP-8 37 400 77,1 0,86 84,2 2902 1102 128 - UZS.5.13
SMP-8 45 400 87,4 0,87 88,8 2907 1162 159 - UZS.5.14
SMP-8 52 400 99 0,87 91,7 2915 1242 178 - UZS.5.14
SMP-8 55 400 110 0,86 89,5 2916 1282 183 - UZS.5.14
SMP-8 59 400 114 0,85 89,9 2915 1315 188 - UZS.5.14
SMP-8 66 400 129 0,87 90,7 2914 1393 203 - UZS.5.14
SMP-8 75 400 143 0,87 91,4 2916 1464 217 - UZS.5.15
SMP-8 81 400 160 0,86 90,8 2920 1535 232 UZS.5.15
SMP-8 92 400 183 0,85 91,6 2932 1650 256 - UZS.5.16
SMP-8 110 400 216 0,87 87 2852 1844 295 - UZS.5.16
SMP-10 75 400 145 0,9 87 2886 1400 295 - UZS.5.15
SMP-10 81 400 161 0,87 86 2885 1455 320 - UZS.5.15
SMP-10 92 400 184 0,88 87 2889 1530 347 - UZS.5.16
SMP-10 110 400 212 0,9 87 2888 1615 379 - UZS.5.16
SMP-10 132 400 242 0,91 87 2838 1815 440 - UZS.5.16
SMP-10 147 400 295 0,92 87 2920 1890 462 - UZS.5.16
SMP-10 165 400 327 0,89 88 2920 1915 478 - UZS.5.16
SMP-10 185 400 350 0,9 88 2932 1985 490 - UZS.5.16

 


Hydro-Vacuum S.A.
ul. Droga Jeziorna 8
86-303 Grudziądz
tel. 56 45 07 415
fax. 56 46 25 955
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