Lorentz PSk2-7 Manuel D'installation Et De Fonctionnement page 55

Example:
ƒ Motor:
AC DRIVE CS-F 7.5 kW  1.4 Ω
ƒ Motor cable:
150 m and 6 mm  0.25 Ω / 100 m
2
Calculation of expected phase-to-phase resistance:
= 1.4 Ω + 2 × 150 m × 0.25 Ω / 100 m
= 1.4 Ω + 2 × 0.375 Ω
= 1.4 Ω + 0.75 Ω
= 2.15 Ω
= ~ 2.2 Ω
Table 12: Motor cable resistances for surface pump motors
Surface pump CS-F motors
AC DRIVE CS-F 5.5 kW
AC DRIVE CS-F 7.5 kW
AC DRIVE CS-F 11 kW
AC DRIVE CS-F 15 kW
AC DRIVE CS-F 30 kW
Surface Pump CS-G Motors
AC DRIVE CS-G 5.5 kW
AC DRIVE CS-G 7.5 kW
AC DRIVE CS-G 11 kW
AC DRIVE CS-G 11 kW/4p
AC DRIVE CS-G 15 kW
AC DRIVE CS-G 15 kW/4p
AC DRIVE CS-G 18.5 kW
AC DRIVE CS-G 18.5 kW/4p
AC DRIVE CS-G 30 kW/4p
The real measured values can be different, depending on the
measurement equipment and materials that are used. This is
just an approximation.
Insulation resistance
Use a megohmmeter at 500 –1,000 V.
Measure each phase to ground. Connect one test prod to
the phase hold the other test prod to the pipe work, or if
plastic pipes are used to the ground wire.
If the insulation resistance is below 0.5 MΩ, the motor cable
must be ckecked for damage.
PSk2 system Phase-to-phase resistance [Ω]
PSk2-7
PSk2-9
PSk2-15
PSk2-21
PSk2-40
PSk2 system Phase-to-phase resistance [Ω]
PSk2-7
PSk2-9
PSk2-15
PSk2-15
PSk2-21
PSk2-21
PSk2-25
PSk2-25
PSk2-40
Pump Installation
1.4
1.4
0.8
0.8
0.2
1.7
1.3
0.8
0.8
0.7
0.7
0.8
0.8
0.2
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