Replacing Thyristor Blocks; Disassembling The Thyristor Blocks For Size H - Siemens Simovert 6SE70 Series Operating Instructions Manual

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Maintenance
8.2.5

Replacing thyristor blocks

8.2.5.1

Disassembling the thyristor blocks for size H

8
7 7
G G
K K
9
G
12
K
13 8
Front thyristor block, level A (weight of a thyristor block, approx. 9.5 kg)
•
Swing out the two doors
•
d
Detach cable from the modules and the screen fixture.
•
Remove 2 M6 hexagon-head bolts
•
Only on disassembling the central thyristor block, open 4 twisted cables
thermistors that are only located on the central thyristor block.
•
Unplug the gate and cathode cables (G, K)
•
Remove 3 M8 hexagon-head bolts
•
Loosen the two M8 hexagon-head screws
block out forwards.
•
A
Loosen M6 nut and pull the thyristor block out upwards at an angle.
Rear thyristor block, level B (weight of a thyristor block, approx. 9.5 kg)
•
Unplug the gate and cathode cables(G, K)
•
Remove 3 M8 hexagon-head bolts
•
F
Loosen M6 nut and pull the thyristor block out upwards at an angle.
The thyristor blocks are installed in the reverse order.
8-12
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8 13
7 7 12
G G G
K K K
9 9
G G
12 12
10
K K
8 8
13 13
a
by removing two M4 slit Torx screws
f
and swing out electronics box as far as the stop.
j
k
l
, push rail
S
D
.
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13
G
K 12
14 11
12
G
K
13
s
in each case.
.
;
approx. 150 mm upwards and swing the thyristor
.
Rectifier/Regenerating Unit
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8
G
K 7
5
6
5
9
10
8
g h
and detach cable
Siemens AG 6SE7087-6AK85-1AA0
Operating Instructions
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09.02
2
1
2
4
3
2
1
2
for the two