External Current Transformers - Grundfos MP 204 Montage- Und Betriebsanleitung

8.6 External current transformers

At motor currents above 120 A, external current
transformers must be used. Fit the transformers as
shown in fig. 12.
Fig. 12 Current transformers
Fig. 13 Five windings per phase through MP 204
Current transformer
ratio
200:5
300:5
500:5
750:5
1000:5
L L L
1 2 3
I P
max. max.
200 A 5 VA
300 A 5 VA
500 A 5 VA
750 A 5 VA
1000 A 5 VA
Take the three measuring cables through the three
holes in MP 204 five times per phase. See fig. 13.
The three current transformers must be fitted in the
same direction, and the measuring cables must be
connected in the same way.
x5 x5 x5
15