10. Use the joint pieces to connect the DC busbars. Tighten the bolts to 55…70 N·m
(40…50 lbf·ft).
a
a
a
a
a
a
aa
a
a
ab
a
d
a
a
a
b
a
c
a
d
aa
55…70 N·m
(40…50 lbf·ft)
ac
a
a
Units with single DC busbars
Units with double DC busbars
a Joint piece
b Plain washer with electroplated zinc coating and blue chromate passivation
c Spring washer with mechanically sprayed zinc coating
d Nut
WARNING!
Make sure you install the washers in the correct order as shown. For example,
placing an unpassivated zinc-coated spring washer directly against the joint
piece will cause corrosion.
WARNING!
Do not use any joining parts other than those delivered with the unit. The parts
are carefully selected to match the material of the busbars. Other parts or
materials can form a galvanic couple and cause corrosion.
11. Reinstall any covering plates removed earlier.
12. Repeat procedure for any further sections.
62 Mechanical installation
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