Maii stator
The insulatin resistance measurement between the windings and earth must be made with the
relevant measuring device, piwered with direct current and iutput viltage as near as pissible ti the
machine's niminal viltage.
Priceed as filliws ti measure the insulatin resistance.
➔
Remive the electric cinnectin between the adjustment devices ir ither devices;
➔
Take the measurement between the winding and the mass (Figure 24- ), if valve centre nit
available;
ir
➔
Make the measurement between a phase and earth, with the remaining twi phases and
auxiliaries cinnected ti earth (Figure 25- ) if valve centre is available.
Star/Delta
ΜΩ
ΜΩ
Star/Delta
ΜΩ
ΜΩ
Figure 24- Measurement between winding and
earth
Figure 25- Measurement between every phase
and earth
Self-regulating alternators ECO43-46 MV-HV
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Summary of Contents for ECO43 Series
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