Mounting Grading Ring (Polim-I, -S, -H Only) - ABB POLIM Operating Instructions Manual

Surge arrester with disconnecting device
DANGER!
Tripping of disconnecting device
Risk of injury due to inappropriate handling.
Do not expose the disconnecting device to temperatures above 60 °C (for exceptions, see
X
specific product documentation).
Never try to open the disconnecting device.
X
Do not connect any voltage/energy source to the terminals of the disconnecting device.
X
Mount the insulating bracket at vertical surface (wall, column, tower).
X
Use a flexible connection between disconnector and earth.
X
Connect the earth conductor to the stud of the disconnecting device.
X
5.4.3

Mounting grading ring (POLIM-I, -S, -H only)

If your surge arrester has a grading ring, you must mount the grading ring.
Ensure that the surge arrester cannot topple over.
X
Place the grading ring (4) over the surge arrester with the mounting holes towards the
X
top.
Screw out the connection bolt (1) approx. 11 mm with a fork wrench.
X
Lift the cover (2) slightly.
X
Place the three supports (3) of the grading ring into the intended cut-outs between
X
cover (2) and surge arrester.
Screw in the connection bolt (1) with a fork wrench, but do not tighten it yet.
X
Screw the grading ring (4) onto the supports with countersunk screws M10 (5).
X
Tighten the connection bolt (1) to a torque of 100 Nm.
X
Tighten the countersunk screws (5) at the grading ring to a torque of 25 Nm.
X
10 |
1
2
3
5
4
1 Connection bolt
2 Cover
3 Support
4 Grading ring
5 Countersunk screw
Operating instructions | EN | 1HC0141361 AA