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3EQ Composite Housed Surge Arresters
Saving Money and Space, Gaining Reliability
Answers for energy.
1
A perfect Combination of
Cost-Savings, Safety and Reliability
3EQ Surge Arresters:
Your Reliable, Sturdy and Economic Choice
3EQ surge arresters are virtually indestructible. While their tube
design provides the highest possible mechanical strength and
enables them to support high bending moments, the silicone
rubber insulation is ideal for outdoor applications in severe
environmental conditions. No matter how tough the environmental or operating conditions may be, our 3EQ arresters
assures a 100 % reliable pressure relief performance, they provide the ultimate in protection. They are break-proof and retain
at least 75 % of their mechanical strength even after pressure
relief. They provide the greatest stability, even in earthquakes.
Reduced Space Requirements
Their advantages are more than convincing, a perfect combination of cost-savings and safety for your substations. The
combination of silicone rubber and fiber-glass-reinforced tube
imparts enormous load carrying capacity to the structure. Thus,
our 3EQ surge arresters are the perfect choice to replace existing post insulators in your substations up to voltages of 800 kV.
Where space is most essential, 3EQ surge arresters can even be
mounted over the transformer to support connectors without
any danger to neighboring equipment. This assures maximum
stability, even if the arresters should “blow out” after overloading. Pressure relief is absolutely reliable – there is no danger
to equipments in the direct vicinity. Due to their unique tube
design, no parts will be expelled, and the emerging arc will
burn between the ends of the pressure relief device.
Longevity and Reliability
The 3EQ’s Silicone Rubber housings provide the best possible
long-life-performance for high-voltage surge arresters. They
make use of all the advantages of bonding vulcanized-on
silicone rubber sheds to a fiberglass-reinforced plastic tube,
providing enhanced safety and meeting every requirement.
And, with their silicone rubber housings, the arresters enjoy
all-round protection. The silicone rubber shield provides a reliable defense against snow, sandstorms, ozone, high-level UV
radiation, sea salt, soot and acid rain in industrial regions. Only
genuine silicone rubber is capable of maintaining its hydrophobic properties throughout its entire service life – and is resistant
to UV radiation. The silicone rubber of the 3EQ surge arresters
reliably prevents the formation of films of water or dirt. Surface
currents resulting from conductive layers of accumulated dirt
are eliminated.
The cost-saving solution for your substation
You require fewer post insulators for your installation,
thereby saving you both money and space.
Transformer
Voltage
GIS bushing
transformer
Surge Support
arrester
Transformer
3EQ as support
Support
Street
Diagram of substation prior to 3EQ modification
2
Saved installment space
Voltage
transformer
GIS bushing
Support
Street
Diagram of substation with integrated 3EQ modification
A lot more speaks for the efficiency of 3EQ
Their dramatically reduced weight means savings right
from the start – in transportation, in support structures
and in installation. The weight reduction in our polymeric
arresters compared with porcelain types is amazing.
In fact, highvoltage arresters with composite housings are
about 50 % lighter than their porcelain counterparts. This
makes all the difference: Initially in terms of transportation
costs. Then there is installation and commissioning –
involving reduced labor costs, less complex support structures and simple hoisting gear. The cranes required can be
significantly smaller – and the cost using them correspondingly lower. And there‘s another way in which they save
costs – polymeric arresters don‘t need cleaning. By virtue
of its hydrophobic properties, everything is so much simpler with silicone rubber throughout its entire service life.
They provide numerous advantages – a gain for everyone,
thanks to Siemens know-how for innovations and unsurpassed quality of manufacture.
All 3EQ advantages at a glance are
■ Maximized service life
■ 100 % break-proof – reliable overload performance,
no hazardous splinters even under maximum pressure:
these arresters can even be installed in close proximity
to costly system components
■ Safe from damage – unbreakable during transportation,
installation, storms, earthquakes and immune to vandalism
■ Outstanding stability in earthquake and storm:
these arresters can be used to replace post insulators
■ Use of silicone rubber – hydrophobic, resistant to pollution
and to UV radiation
■ Extremely rugged – reliable in any climate and
polluted environment
■ Substantially reduced weight – ease of installation with
simple lifting gear
■ Complete and wide product range, special versions to order
■ Cost-effective in all respects – maximum availability –
for many special application and installation needs
Reduce the required space even more
It‘s no problem to install our 3EQ surge arrester on top
of the transformer! There is no danger to equipment,
even in the direct vicinity.
3EQ as support
Voltage
transformer
Sealing
system
Directional pressure
relief device
GIS bushing
Transformer
FRP rods
Metal oxide
blocks
Glass fibre
reinforced tube
Street
Silicone
rubber housing
Clearance between equipment according
to technical standards
3
Choose the Appropriate Arrester
In just four steps you can choose the right surge arrester:
1. First step choose the type 3EQ1, 3EQ4 or 3EQ3
from diagram 1.
2. Second step verify the maximum technical data
with table 1.
3. Third step choose the surge arrester with table 2.
4. Fourth step select the suitable installation and
grounding and complete the order number with table 3.
Diagram 1
LD-class
Long duration current impulse Max. value/A
Bending Moment/kNm
5000
72
4125
5
42
2750
2100
38
1600
21
3 and 4
1200
2 and 3
850
2
500
Special
application
3EQ3
Special
application
3EQ4
6
Special
application
12
36
52
3EQ1
72
123
145
170
245
300
362
420
550
800
Um
kV
Table 2
Highest voltage
for equipment
Standard
lightning
impulse
withstand
voltage
Rated
voltage
Um
[kV]
BIL min
[kV]
Ur
[kV]
Uc
[kV]
LD-Cl
72.5
325
325
325
325
54
54
60
60
43
43
48
48
2
3
2
2
325
325
325
325
60
66
66
66
48
53
53
53
325
325
72
72
325
325
Continuous
Line
operating discharge
voltage
class
Long
duration
current
2 ms
Maximum values of the residual voltages at
discharge currents of the following impulses
Arrester type
[A]
8/20 µs
5 kA
[kV]
8/20 µs
10 kA
[kV]
8/20 µs
20 kA
[kV]
30/60 µs
0.5 kA
[kV]
30/60 µs
1 kA
[kV]
30/60 µs
2 kA
[kV]
500
850
500
850
133
122
148
130
143
130
159
138
160
144
178
153
110
104
122
110
114
106
127
113
120
111
134
119
3EQ1
3EQ1
3EQ1
3EQ1
054
054
055
056
–
–
–
–
1
2
1
2
P
P
P
P
B
B
B
B
2
3
2
2
1
1
1
1
–
–
–
–
3
2
2
3
850
500
850
850
135
163
143
149
144
175
152
158
160
196
168
176
115
135
121
127
118
140
124
130
124
147
131
136
3EQ1
3EQ1
3EQ1
3EQ1
060
066
066
066
–
–
–
–
2
1
2
2
P
P
P
P
B
B
B
B
3
2
2
3
1
1
1
1
–
–
–
–
58
58
2
3
500
850
177
162
191
173
214
192
147
138
153
142
160
149
3EQ1
3EQ1
072
072
–
–
1
2
P
P
B 2 1 –
B 3 1 –
30
30
24
24
2
3
500
850
74,0
67,7
79,5
72,0
89,0
79,9
61,2
57,6
63,6
59,0
66,8
61,9
3EQ1
3EQ1
030
030
–
–
1
2
S
S
B 2 1 –
B 3 1 –
450
450
450
450
96
96
96
102
77
77
77
82
2
2
3
2
500
850
850
500
237
208
217
251
254
221
230
270
285
245
256
303
196
177
184
208
204
181
189
216
214
190
198
227
3EQ1
3EQ1
3EQ1
3EQ1
096
096
096
102
–
–
–
–
1
2
2
1
P
P
P
P
J
J
J
J
2
2
3
2
1
1
1
1
–
–
–
–
450
450
450
450
102
108
108
111
82
86
86
89
3
2
3
3
850
500
850
850
230
266
244
250
245
286
259
266
272
321
288
296
196
220
207
213
201
229
213
218
211
240
223
229
3EQ1
3EQ1
3EQ1
3EQ1
102
108
108
111
–
–
–
–
2
1
2
2
P
P
P
P
J
J
P
P
3
2
3
3
1
1
1
1
–
–
–
–
123
Resonant earthed
450
550
550
51
90
96
41
72
77
2
2
2
500
850
850
126
195
208
135
207
221
151
230
245
104
166
177
108
170
181
114
178
190
3EQ1
3EQ1
3EQ1
051
090
096
–
–
–
1
2
2
S
S
S
B 2 1 –
E 2 1 –
J 2 1 –
145
550
550
550
550
111
111
120
120
89
89
96
96
2
2
2
3
500
850
500
850
274
240
296
271
294
255
318
288
329
283
356
320
227
204
245
230
235
209
254
236
247
220
267
248
3EQ1
3EQ1
3EQ1
3EQ1
111
111
120
120
–
–
–
–
1
2
1
2
P
P
P
P
J
J
P
P
2
2
2
3
1
1
1
1
–
–
–
–
550
550
550
550
126
132
144
144
101
106
115
115
3
3
2
3
850
850
850
850
284
298
311
325
302
317
331
346
336
352
368
384
242
253
265
276
248
260
272
283
260
272
285
297
3EQ1
3EQ1
3EQ1
3EQ1
126
132
144
144
–
–
–
–
2
2
2
2
P
P
P
P
P
P
P
P
3
3
2
3
1
1
1
1
–
–
–
–
Neutral-ground arresters
Um [kV]
72.5
123
Neutral-ground arresters
Um [kV]
Neutral-ground arresters
Um [kV]
145
550
60
48
2
500
148
159
178
122
127
134
3EQ1
060
–
1
S
B 2 1 –
170
650
650
650
138
138
138
110
110
110
2
2
3
500
850
850
340
298
311
366
317
331
410
352
368
282
254
265
293
260
272
307
273
285
3EQ1
3EQ1
3EQ1
138
138
138
–
–
–
1
2
2
P
P
P
P
P
P
2 1 –
2 1 –
3 1 –
650
144
115
2
500
355
382
427
294
305
321
3EQ1
144
–
1
P
P
2 1 –
650
650
650
144
144
150
115
115
120
3
3
3
850
850
850
325
325
338
346
346
360
384
384
400
276
276
288
283
283
295
297
297
310
3EQ1
3EQ1
3EQ1
144
144
150
–
–
–
2
2
2
P
P
P
P
P
P
3 1 –
3 1 –
3 1 –
183
205
141
146
154
3EQ1
069
–
1
S
B 2 1 –
Neutral-ground arresters
Um [kV]
170
4
650
69
55
2
500
170
1) According to IEC 60099-4 these values are measured on individual housing units
Diagram 2/Diagram 3:
Power-frequency voltage versus time characteristic
Table 1
Maximum values
3EQ1
3EQ4
3EQ3
p. u. Ur [kV] 1.4
Preheating to 40 °C
1.3
Nominal system voltage Un
kV
345
500
765
Highest voltage
for equipment Um
kV
362
550
800
1.1
Maximum rated voltage Ur
kV
288
468
612
1.0
Maximum nominal discharge
current In
kA
10
20
20
3
5
5
kJ/kVr
8
18
27
A
850
2100
5500
1.3
kA
50
65
80
1.2
Rated short circuit current
Maximum permissible
service load
0.9
0.8
Maximum line discharge class
Maximum energy absorption
capability
Maximum long duration
current impuls
Preheating to 60 ° C and
stressing with rated energy
1.2
kNm
6
38
0.7
0.1
1
10
100
1000
t [s]
p. u. Ur [kV] 1.4
Preheating to 40 ° C
Preheating to 60° C and
stressing with rated energy
1.1
72
1.0
0.9
Temporary Over Voltage
(TOV)
0.8
To find the right arrester just follow the color codes
3EQ1
3EQ4
3EQ3
Height
[H]
Number
of units
[mm]
0.7
Housing insulation
Creepage
distance
Lightning impulse withstand
voltage
1.2/50 µs1)
[kV]
Power frequency withstand
voltage 1 min., wet1)
[kV]
0.1
1
10
100
1000
Top load
dynamic
Grading ring
diameter
[D]
Weight
t [s]
TOV Diagram
Figure
[mm]
[N]
[mm]
[kg]
4
4
4
4
xxx
xxx
xxx
xxx
885
885
885
885
1
1
1
1
348
348
348
348
162
162
162
162
2075
2075
2075
2075
6800
6800
6800
6800
–
–
–
–
25
27
25
27
2
2
2
3
11
11
11
11
4
4
4
4
xxx
xxx
xxx
xxx
885
885
885
885
1
1
1
1
348
348
348
348
162
162
162
162
2075
2075
2075
2075
6800
6800
6800
6800
–
–
–
–
27
26
28
28
2
2
3
2
11
11
11
11
4 xxx
4 xxx
885
885
1
1
348
348
162
162
2075
2075
6800
6800
–
–
26
29
2
2
11
11
4 xxx
4 xxx
885
885
1
1
348
348
162
162
2075
2075
6800
6800
–
–
23
24
2
2
11
11
4
4
4
4
xxx
xxx
xxx
xxx
1235
1235
1235
1235
1
1
1
1
551
551
551
551
257
257
257
257
3390
3390
3390
3390
4900
4900
4900
4900
–
–
–
–
32
35
36
33
2
3
2
2
11
11
11
11
4
4
4
4
xxx
xxx
xxx
xxx
1235
1235
1235
1235
1
1
1
1
551
551
551
551
257
257
257
257
3390
3390
3390
3390
4900
4900
4900
4900
–
–
–
–
37
33
38
38
2
2
2
2
11
11
11
11
4 xxx
4 xxx
4 xxx
885
1035
1235
1
1
1
348
435
551
162
203
257
2075
2635
3390
6800
5800
4900
–
–
–
25
33
33
2
3
3
11
11
11
4
4
4
4
xxx
xxx
xxx
xxx
1235
1235
1485
1485
1
1
1
1
551
551
696
696
257
257
324
324
3390
3390
4330
4330
4900
4900
4000
4000
–
–
–
–
68
71
72
76
2
3
2
2
11
11
11
11
4
4
4
4
xxx
xxx
xxx
xxx
1485
1485
1485
1485
1
1
1
1
696
696
696
696
324
324
324
324
4330
4330
4330
4330
4000
4000
4000
4000
–
–
–
–
77
78
79
79
2
2
3
2
11
11
11
11
4 xxx
1050
1
484
334
2490
5700
–
26
2
11
4 xxx
4 xxx
4 xxx
1485
1485
1485
1
1
1
696
696
696
324
324
324
4330
4330
4330
4000
4000
4000
–
–
–
39
44
45
2
3
2
11
11
11
4 xxx
1485
1
696
324
4330
4000
–
39
2
11
4 xxx
4 xxx
4 xxx
1485
1485
1485
1
1
1
696
696
696
324
324
324
4330
4330
4330
4000
4000
4000
–
–
–
45
45
46
2
2
2
11
11
11
4 xxx
885
1
348
162
2075
6800
–
26
2
11
5
Highest voltage
for equipment
Standard
lightning
impulse
withstand
voltage
Rated
voltage
Um
[kV]
BIL min
[kV]
Ur
[kV]
Uc
[kV]
LD-Cl
245
850
850
850
850
192
192
192
192
154
154
154
154
2
2
3
3
850
850
850
192
198
198
154
158
158
850
850
850
198
198
198
850
850
228
228
245
850
300
850
850
850
850
Continuous
Line
Long
operating discharge
duration
voltage
class
current 2 ms
Maximum values of the residual voltages at
discharge currents of the following impulses
Arrester type
[A]
8/20 µs
5 kA
[kV]
8/20 µs
10 kA
[kV]
8/20 µs
20 kA
[kV]
30/60 µs
0.5 kA
[kV]
30/60 µs
1 kA
[kV]
30/60 µs
2 kA
[kV]
500
850
850
850
473
415
433
433
509
442
461
461
570
490
511
511
392
353
369
369
407
362
378
378
427
380
396
396
3EQ1
3EQ1
3EQ1
3EQ4
4
2
2
1200
500
850
424
488
428
451
525
455
496
588
505
366
404
364
375
420
373
393
441
392
3EQ4 192 – 3 P R 4 1 –
3EQ1 198 – 1 P J 2 2 –
3EQ1 198 – 2 P J 2 2 –
158
158
158
3
3
4
850
850
1200
447
447
437
475
475
465
527
527
512
380
380
377
390
390
386
409
409
405
3EQ1 198 – 2 P J 3 2 –
3EQ4 198 – 2 P R 3 1 –
3EQ4 198 – 3 P R 4 1 –
182
182
3
3
850
850
514
514
547
547
607
607
438
438
449
449
471
471
3EQ1 228 – 2 P J 3 2 –
3EQ4 228 – 2 P V 3 1 –
102
82
2
500
251
270
303
208
216
227
3EQ1 102 – 1 S J 2 1 –
228
228
228
228
182
182
182
182
2
2
3
3
500
850
850
850
562
493
514
514
604
524
547
547
677
582
607
607
465
420
438
438
483
430
449
449
508
451
471
471
3EQ1
3EQ1
3EQ1
3EQ4
850
950
850
228
240
240
182
192
192
4
2
2
1200
500
850
504
592
519
536
636
552
589
712
613
434
490
442
445
509
453
466
534
475
3EQ4 228 – 3 P V 4 1 –
3EQ1 240 – 1 P P 2 2 –
3EQ1 240 – 2 P P 2 2 –
850
850
850
240
240
240
192
192
192
3
3
4
850
850
1200
541
541
530
576
576
564
639
639
620
461
461
457
472
472
468
495
495
491
3EQ1 240 – 2 P P 3 2 –
3EQ4 240 – 2 P V 3 1 –
3EQ4 240 – 3 P V 4 1 –
300
850
120
96
2
500
296
318
356
245
254
267
3EQ1 120 – 1 S J 2 1 –
362
950
950
1050
276
276
288
220
220
230
3
4
3
850
1200
850
623
610
650
662
649
691
735
713
767
530
526
553
543
538
567
570
564
594
3EQ4 276 – 2 P N 3 2 –
3EQ4 276 – 3 P N 4 2 –
3EQ4 288 – 2 P N 3 2 –
1050
1175
288
360
230
288
4
2
1200
850
636
778
677
828
744
919
548
662
562
679
589
712
3EQ4 288 – 3 P N 4 2 –
3EQ4 360 – 2 P N 2 2 –
362
950
147
117
3
850
332
353
392
282
289
303
3EQ1 147 – 2 S P 3 1 –
420
1175
1175
1175
336
336
336
268
268
268
3
4
5
850
1200
1600
758
742
734
806
790
773
895
869
842
645
640
634
661
656
657
694
687
680
3EQ4 336 – 2 P R 3 2 –
3EQ4 336 – 3 P R 4 2 –
3EQ4 336 – 4 P R 5 2 –
1175
1300
1300
1175
336
360
360
360
268
288
288
288
5
3
4
5
1600
850
1200
1600
734
812
795
787
773
864
846
828
842
959
931
903
634
691
685
679
657
708
702
704
680
743
736
729
3EQ3
3EQ4
3EQ4
3EQ4
1175
360
288
5
1600
787
828
903
679
704
729
3EQ3 360 – 4 P N 5 2 –
420
1175
168
134
3
850
379
403
448
323
331
347
3EQ1
550
1300
1300
396
396
316
316
5
5
1600
2100
865
839
911
883
993
954
747
742
774
760
802
786
3EQ4 396 – 4 P V 5 2 –
3EQ4 396 – 5 P V 5 2 –
1300
1300
1425
399
399
420
319
319
336
5
5
5
1600
2100
1600
872
845
918
918
890
966
1000
961
1053
753
747
792
780
765
821
808
792
850
3EQ4 399 – 4 P V 5 2 –
3EQ4 399 – 5 P V 5 2 –
3EQ4 420 – 4 P V 5 2 –
1425
1425
1550
1550
420
420
444
444
336
336
355
355
5
5
5
5
2100
2100
1600
1600
890
890
970
970
937
937
1021
1021
1011
1011
1113
1113
787
787
837
837
806
806
868
868
834
834
899
899
3EQ4
3EQ3
3EQ4
3EQ3
1425
1425
444
444
355
355
5
5
2100
2100
941
941
990
990
1069
1069
832
832
852
852
881
881
3EQ4 444 – 5 P V 5 2 –
3EQ3 444 – 5 P T 5 2 –
1208
1246
1265
1297
1271
1311
1331
1365
1373
1416
1438
1474
1068
1101
1118
1146
1093
1128
1145
1174
1131
1167
1185
1215
192
192
192
192
–
–
–
–
1
2
2
2
P
P
P
P
J
J
J
R
2
2
3
3
2
2
2
1
–
–
–
–
Neutral-ground arresters
Um [kV]
228
228
228
228
–
–
–
–
1
2
2
2
P
P
P
P
P
P
P
V
2
2
3
3
2
2
2
1
–
–
–
–
Neutral-ground arresters
Um [kV]
Neutral-ground arresters
Um [kV]
336
360
360
360
–
–
–
–
4
2
3
4
P
P
P
P
M
R
R
R
5
3
4
5
2
2
2
2
–
–
–
–
Neutral-ground arresters
Um [kV]
800
6
1800
570
456
5
2100
1950
588
470
5
2100
1950
597
477
5
2100
1950
612
489
5
2100
1) According to IEC 60099-4 these values are measured on individual housing unit
3EQ3
3EQ3
3EQ3
3EQ3
168 – 2 S S 3 1 –
420
420
444
444
570
588
597
612
–
–
–
–
–
–
–
–
5
5
4
4
5
5
5
5
P
P
P
P
P
P
P
P
V
S
V
T
S
T
T
U
5
5
5
5
5
5
5
5
2
2
2
2
3
3
3
3
–
–
–
–
–
–
–
–
Height
[H]
Number
of units
[mm]
Housing insulation
Creepage
distance
Lightning impulse
withstand
voltage 1.2/50 µs1)
[kV]
Power frequency
withstand voltage
1 min., wet1)
[kV]
Top load
dynamic
Grading ring
diameter
[D]
Weight
TOV
Diagram
Figure
[mm]
[N]
[mm]
[kg]
xxx
xxx
xxx
xxx
2470
2470
2470
2060
2
2
2
1
1102
1102
1102
806
513
513
513
375
6780
6780
6780
6210
2400
2400
2400
10200
800
800
800
800
64
71
72
109
2
3
2
2
12
12
12
41
4 xxx
4 xxx
4 xxx
2060
2470
2470
1
2
2
806
1102
1102
375
513
513
6210
6780
6780
10200
2400
2400
800
800
800
119
65
72
2
2
3
41
12
12
4 xxx
4 xxx
4 xxx
2470
2060
2060
2
1
1
1102
806
806
513
375
375
6780
6210
6210
2400
10200
10200
800
800
800
72
110
120
2
2
2
12
41
41
4 xxx
4 xxx
2470
2460
2
1
1102
1035
513
482
6780
7715
2400
8500
800
800
76
118
2
2
12
41
4 xxx
1235
1
551
257
3390
4900
–
33
2
12
4
4
4
4
xxx
xxx
xxx
xxx
2970
2970
2970
2460
2
2
2
1
1392
1392
1392
1035
1008
1008
1008
750
8660
8660
8660
7715
2000
2000
2000
8500
1000
1000
1000
800
77
85
86
118
2
3
2
2
12
12
12
41
4 xxx
4 xxx
4 xxx
2460
2970
2970
1
2
2
1035
1392
1392
750
1008
1008
7715
8660
8660
8500
2000
2000
800
1000
1000
130
79
86
2
2
3
41
12
12
4 xxx
4 xxx
4 xxx
2970
2460
2460
2
1
1
1392
1035
1035
1008
750
750
8660
7715
7715
2000
8500
8500
1000
800
800
88
119
132
2
2
2
12
41
41
4 xxx
1235
1
551
399
3390
4900
0
34
2
11
4 xxx
4 xxx
4 xxx
3520
3520
3520
2
2
2
1624
1624
1624
1176
1176
1176
10170
10170
10170
6000
6000
6000
1200
1200
1200
175
189
176
2
2
2
42
42
42
4 xxx
4 xxx
3520
3520
2
2
1624
1624
1176
1176
10170
10170
6000
6000
1200
1200
191
183
2
3
42
42
4 xxx
1485
1
696
504
4330
4000
0
45
2
11
4 xxx
4 xxx
4 xxx
4120
4120
4120
2
2
2
1612
1612
1612
1168
1168
1168
12420
12420
12420
5100
5100
5100
1500
1500
1500
191
210
227
2
2
2
42
42
42
4
4
4
4
xxx
xxx
xxx
xxx
3600
4120
4120
4120
2
2
2
2
1682
1612
1612
1612
1218
1168
1168
1168
10540
12420
12420
12420
11700
5100
5100
5100
1200
1500
1500
1500
279
194
214
234
2
2
2
2
32
42
42
42
4 xxx
3800
2
1798
1302
11300
11100
1200
292
2
32
4 xxx
1635
1
783
567
4895
3700
0
50
2
11
4 xxx
4 xxx
4920
4920
2
2
2071
2071
1499
1499
15430
15430
4300
4300
1800
1800
251
311
2
2
42
42
4 xxx
4 xxx
4 xxx
4920
4920
4920
2
2
2
2071
2071
2071
1499
1499
1499
15430
15430
15430
4300
4300
4300
1800
1800
1800
251
311
256
2
2
2
42
42
42
4
4
4
4
xxx
xxx
xxx
xxx
4920
4600
4920
4800
2
2
2
2
2071
1891
2071
2007
1499
1369
1499
1453
15430
14300
15430
15060
4300
9100
4300
8800
1800
1800
1800
1800
319
386
263
333
2
2
2
2
42
32
42
32
4 xxx
4 xxx
4920
4800
2
2
2071
2007
1499
1453
15430
15060
4300
8800
1800
1800
327
397
2
2
42
32
4
4
4
4
6900
7200
7200
7500
3
3
3
3
2836
3010
3010
3184
2054
2180
2180
2306
21450
22590
22590
23700
6100
5800
5800
5600
2200
2200
2200
2650
557
571
577
592
2
2
2
2
33
33
33
33
4
4
4
4
xxx
xxx
xxx
xxx
7
Housings
3EQ1
11
8
3EQ1
12
3EQ4
41
3EQ4
42
3EQ3
32
3EQ3
33
Figure
Installation and Grounding 3EQ1
100
50
114
8
30
(15)
(87)
3
50
24
30
60
200
260
Ø14
25
M12
200
260
298
4 mounting holes 200 x 200 mm for insulated installation
DIN flat terminal
100
44.5
Ø14
28
380
310
8
114
44.5
30
(16)
(87)
380
310
3
30
60
24
M12
Ø24
NEMA flat terminal
80
44.5/50
Ø30
80
M12
80
44.5/50
4 mounting holes 310 x 310 mm for insulated installation
Additional cable clamp for flat terminal
Bolt terminal
9
Control Devices for Surge Arresters
These control devices can be connected
to all shown surge arresters in this catalogue.
Arrester condition indicator
The arrester condition indicator (ACI)
shows the arrester status at a glance.
Its easy-to-understand “traffic light”
visualisation is based on a 3rd-harmonicevaluation of the leakage current.
Control spark gap
To estimate the current that
flows through the surge
arrester in case of an over
voltage and to count the
surges
Surge counter
Surge counter
with leakage current
meter
Order number: 3EX5070
Order number: 3EX6040
Order number: 3EX5030
Order number: 3EX5050
Installation and Grounding 3EQ4
380
M20
310
M20
44.5/50
80
M12
(15)
310
380
80
44.5/50
80
M12
4 mounting holes 310 x 310 mm for insulated installation
Additional cable clamp for flat terminal
100
100
44.5
Bolt terminal
10
44.5
28
Ø14
DIN flat terminal
Ø14
114
80
Ø30
114
50
25
50
NEMA flat terminal
Display
Up to 200 m
Sensor
LCM II
System for live condition check
of metal oxide surge arresters
Surge counter
with leakage current meter remote indication
Order number: 3EX5060
Order number: 3EX5062
Installation and Grounding 3EQ3
M20
M20
M12
(15)
M12
270
330
44.5/50
80
330
270
44.5/50
80
Additional cable clamp
for flat terminal
4 mounting holes 270 x 270 mm for insulated installation
100
100
44.5
Bolt terminal
DIN flat terminal
44.5
28
Ø14
114
80
Ø30
Ø14
114
50
25
50
NEMA flat terminal
11
Table 3: Example
Order number
Silicone rubber housed surge arrester tube design
Surge arrester model
Bending moment 6 kNm
Bending moment 21 or 38 kNm
Bending moment 42 or 72 kNm
Rated voltage in kV
Long duration current
500 A
850 A
1200 A
1600 A
2100 A
Application
Phase surge arrester
Neutral point surge arrester
Housing size of single unit
Line discharge class (for example)
LD 1
LD 2
LD 3
LD 4
LD 5
LD 5+ / 2 columns
LD 5+ / 3 columns
LD 5+ / 4 columns
Number of units
1 unit
2 units
3 units
Form of sheds and colour
Alternating sheds, grey
High-voltage terminal
Metal plate (connection with cable eye)
Bolt
30 mm diameter, 70 mm long
Bolt
30 mm diameter, 80 mm long
Bolt
30 mm diameter, 80 mm long
Bolt
30 mm diameter, 100 mm long
Bolt
35/36 mm diameter, 80 mm long
Bolt
40 mm diameter, 80 mm long
Bolt
40 mm diameter, 100 mm long
Bolt
40 mm diameter, 120 mm long
DIN Flat
100 mm x 100 mm
DIN Flat
100 mm x 100 mm
DIN Flat
200 mm x 100 mm
NEMA Flat
100 mm x 100 mm
NEMA Flat
100 mm x 100 mm
NEMA Flat
100 mm x 100 mm
DIN Flat
NEMA Flat
Special
Name plate
German/Englisch (standard)
French
Czech
Slovene
Russian
Spanish
Portuguese
IEEE
Brazil
Special
Mounting
4 hole
Not insulated
4 hole
Insulated
4 hole
insulated, 310 mm x 310 mm, M20
4 hole
10" not insulated
4 hole
16.5" not insulated
4 hole
10" insulated
4 hole
16.5" insulated
Not all combinations are possible.
Published by and
copyright © 2010:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
E
Q
(for example) 3
E
Q
1
120
–
2
P
F
3
1
–
4
D
A
1
1
4
3
(for example)
The top row in table 3
shows an example
of the build-up of
our order numbers.
The items in dark grey
are customer specific
variables.
120
1
2
3
4
5
P
S
F
1
2
3
4
5
6
7
8
1
2
3
4
A
B
C
D
E
F
G
H
J
K
L
M
N
S
U
V
W
Z
stainless steel
hot-dip galvanized steel
stainless steel
stainless steel
stainless steel
stainless steel
stainless steel
stainless steel
hot-dip galvanized steel
hot-dip galvanized steel, 20 mm thick
hot-dip galvanized steel
hot-dip galvanized steel
copper
aluminum
A
B
C
D
E
F
G
H
T
Z
(3EQ1/3)
(Standard)
(3EQ1)
(3EQ1/4)
(3EQ3/4)
(3EQ1/4)
(3EQ3/4)
Please contact us at:
Phone: +49 30/386 33 222
Fax:
+49 30/386 26 721
E-mail: [email protected]
Siemens AG
Energy Sector
Power Transmission Division
High Voltage Products
Nonnendammallee 104
13629 Berlin, Germany
www.siemens.com/energy/arrester-download
12 www.siemens.com/energy
(for example) 3
0
1
3
5
6
7
8
Power Transmission Division
Order No. E50001-G630-A111-X-4A00
Printed in Germany
Dispo 30002
TH 263-091033 470867 WS 01101.0
Printed on elementary chlorine-free
bleached paper.
All rights reserved.
Trademarks mentioned in this
document are the property of
Siemens AG, its affiliates, or their
respective owners.
Subject to change without prior notice.
The information in this document
contains general descriptions of the
technical options available, which may
not apply in all cases. The required
technical options should therefore be
specified in the contract.