Siemens 3NJ6 Betriebsanleitung Seite 21

Accessories
Fitting measuring
current transformers
Position of the measuring
current transformers
22
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Fitting plastic blanking covers:
50 mm 3NJ6916-4AA00
100 mm 3NJ6916-4DA00
Fit the plastic blanking covers to the metal holder with one M6 screw on the left and right
hand sides each, applying a max. tightening torque of 8 Nm.
Single or three-phase measuring current transformers can be retrofitted. See Figs. 13 to 18
for positions of measuring current transformers.
NOTICE:
If it is planned to retrofit onto size 00, switching devices should be provided with terminals.
When retrofitting onto cable-lug connections, the cable may need to be repositioned and the
cable lug pressed open after the lead has been passed through the current transformer.
The standard cable covers may only be used for the single-phase measurements illustrated in
Figs. 13, 15 and 17.
L3
Fig.13 Size 00, position of 1-phase measuring
current transformer
L3
Fig. 15 Size 1, position of 1-phase
measuring current transformer
Fig. 14: Size 00, position of 3-phase measuring
current transformer
L3
L3
Fig. 16: Size 1 position of 3-phase measuring
current transformer
L1
L2
L3
L1 L2
3ZX1012-0NJ61-2AN1