Winding Resistance (Line-To-Line); Internal Wiring - Grundfos UPS 200 Serie Instructions D'installation Et D'utilisation

6.5 Winding resistance (line-to-line)

To check the winding resistance of the motor
windings, a megohmmeter is required.
To do so, follow these steps:
1. Turn the POWER OFF.
2. Disconnect all electrical leads to the motor.
3. Set the scale selector on the megohmmeter
to R x 1, touch its leads together, and adjust
the indicator to zero.
4. Using the charts below for reference, touch
the leads of the megohmmeter to the
appropriate pair of connectors. Check all
pairs that are present and write down and
label (RA, RS , RS
1 2
5. Compare your readings to the matching
model, phase and voltage on the chart on
p. 15 and p. 16.
Evaluation
The resistance values must fall within the
tolerances listed on p. 15 or p. 16. If they do not,
replace the motor.
Single-phase
RA: 6-1 or 6-1, 7-2
: 12-8 or 12-8, 14-9
RS
1
RS : 4-10 or 4-10, 5-11
2
RA: Main winding
RS : Auxiliary winding
1
RS : Auxiliary winding
2
, R) all readings.

Internal wiring

Terminal plug in stator
UPS
Three-phase 208-230 V
R: 5-9 or 5-9, 7-14
R: 11-12 or 11-12, 1-10
R: 4-6 or 4-6, 8-2
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