MWK
Surge arresters
Technical data
-
For system voltages up to
Nominal discharge current I n 8/20 µs
High current impulse Ihc 4/10 µs
Short circuit rating (1) I s 50 Hz
Line discharge class according to
IEC 60099-4
- Service conditions: temperature (2)
- Altitude (3)
36 kV rms
10 kA pk
100 kA pk
20 kA rms for 0.2s
2
- Long duration current impulse
- Energy capability, 2 impulses
acc. IEC clause 7.5.5
- Energy input with Ihc
- Power frequency up to
- Cantilever strength
- Torsional strength
- Vertical load
- 600C up to + 450C
up to 1800 m
550 A / 2000 µs
5.5 kJ / kV of Uc
3.4 kJ / kV of Uc
62 Hz
350 Nm
68 Nm
1200 N
(1) Tested value acc. IEC 60099-4.
(2) These values exceed IEC requirements. For installations in higher ambient temperatures, please contact the manufacturer.
(3) This value exceeds IEC requirements. For installations in higher altitudes, please contact the manufacturer.
Application
Protection of medium voltage AC networks against both, multiple atmospheric and switching overvoltages as well as Very Fast
Transients (VFT). Suitable for instance for the protection of transformers, cables, motors and other medium voltage equipment.
For indoor and outdoor installation. Also available with increased creepage distance (MWK..K4).
Advantages
-
Low residual voltage
Long protection distance
High energy input capacity
Stable U-I characteristics even after multiple strokes
Proof against ageing
Explosion and shatter-resistant design
-
Pollution resistant and UV-stable
Housing resistant to rough handling
Maintenance free
Stable against shock and vibration
High mechanical resistance
Temporary overvoltage capability (TOV) - Power frequency versus time characteristic
-
During 1 second (a: 1.362 x Uc or b: 1.317 x Uc)
During 3 seconds (a: 1.337 x Uc or b: 1.287 x Uc)
During 10 seconds (a: 1.310 x Uc or b: 1.256 x Uc)
a: value tested with a sample that has not been prestressed by any energy input.
b: value tetsted with a sample that has been prestressed with a prior energy input according to the operating duty test
The values have been determined with a test sample preheated at 60 degrees Celsius according to IEC 60099-4 and refer to
an ambient temperature up to 45 degrees Celsius.
Guaranteed data
Type
Ur
Rated voltage
MWK
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
kV rms
5.0
6.3
7.5
8.8
10.0
11.3
12.5
13.8
15.0
16.3
17.5
18.8
20.0
21.3
22.5
23.8
25.0
26.3
27.5
28.8
30.0
31.3
32.5
33.8
35.0
36.3
37.5
38.8
40.0
41.3
42.5
43.8
45.0
46.30
47.50
48.80
50.00
51.30
52.50
53.80
55.0
UC
Continuous
operating
voltage
kV rms
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Residual voltage (Ures) in kV pk at a specified impulse current
Wave 1/.. µs
1 kA p k
10.5
13.1
15.7
18.3
21.0
23.6
26.2
28.8
31.4
34.1
36.7
39.3
41.9
44.5
47.2
49.8
52.4
55.0
57.6
60.3
62.9
65.5
68.1
70.7
73.4
76.0
78.6
81.2
83.9
86.5
89.1
91.7
94.3
97.0
99.6
102.2
104.8
107.4
110.1
112.7
115.2
5 kA p k
12.8
16.0
19.2
22.4
25.6
28.9
32.1
35.3
38.5
41.7
44.9
48.1
51.3
54.5
57.7
60.9
64.1
67.3
70.5
73.7
76.9
80.1
83.4
86.6
89.8
93.0
96.2
99.4
102.6
105.8
109.0
112.2
115.4
118.6
121.8
125.0
128.2
131.4
134.6
137.9
141.0
Wave 8/20 µs
1 0 kA p k
14.5
18.1
21.7
25.3
29.0
32.6
36.2
39.8
43.4
47.1
50.7
54.3
57.9
61.5
65.2
68.8
72.4
76.0
79.6
83.3
86.9
90.5
94.1
97.7
101.4
105.0
108.6
112.2
115.8
119.5
123.1
126.7
130.3
134.0
137.6
141.2
144.8
148.4
152.1
155.7
159.2
1 kA p k
10.4
13.0
15.6
18.2
20.8
23.4
26.0
28.6
31.2
33.8
36.4
39.0
41.6
44.2
46.8
49.4
52.0
54.6
57.2
59.8
62.4
65.0
67.6
70.2
72.8
75.4
78.0
80.6
83.2
85.8
88.4
91.0
93.6
96.2
98.8
101.4
104.0
106.6
109.2
111.8
114.4
5 kA p k
11.6
14.5
17.4
20.3
23.2
26.1
29.0
31.9
34.8
37.7
40.6
43.5
46.4
49.3
52.2
55.1
58.0
60.9
63.8
66.7
69.6
72.5
75.4
78.3
81.2
84.1
87.0
89.9
92.8
95.7
98.6
101.5
104.4
107.3
110.2
113.1
116.0
118.9
121.8
124.7
127.6
Wave 30/60 µs
1 0 kA p k 2 0 kA p k 1 2 5 A p k 2 5 0 A p k 5 0 0 A p k
12.3
13.6
9.0
9.5
9.8
15.4
17.0
11.3
11.9
12.3
18.4
20.4
13.6
14.3
14.8
21.5
23.8
15.8
16.7
17.2
24.6
27.2
18.1
19.0
19.7
27.6
30.6
20.3
21.4
22.1
30.7
34.0
22.6
23.8
24.6
33.8
37.4
24.9
26.2
27.1
36.8
40.8
27.1
28.6
29.5
39.9
44.2
29.4
30.9
32.0
43.0
47.6
31.7
33.3
34.5
46.1
51.0
33.9
35.7
36.9
49.1
54.4
36.2
38.1
39.4
52.2
57.8
38.4
40.5
41.8
55.3
61.2
40.7
42.9
44.3
58.3
64.6
43.0
45.2
46.8
61.4
68.0
45.2
47.6
49.2
64.5
71.4
47.5
50.0
51.7
67.5
74.8
49.7
52.4
54.1
70.6
78.2
52.0
54.8
56.6
73.7
81.6
54.3
57.1
59.1
76.8
85.0
56.5
59.5
61.5
79.8
88.4
58.8
61.9
64.0
82.9
91.8
61.0
64.3
66.4
86.0
95.2
63.3
66.7
68.9
89.0
98.6
65.6
69.0
71.4
92.1
102.0
67.8
71.4
73.8
95.2
105.4
70.1
73.8
76.3
98.2
108.8
72.3
76.2
78.7
101.3
112.2
74.6
78.6
81.2
104.4
115.5
76.9
80.9
83.7
107.5
118.9
79.1
83.3
86.1
110.5
122.3
81.4
85.7
88.6
113.6
125.7
83.7
88.1
91.1
116.7
129.1
85.9
90.5
93.5
119.7
132.5
88.2
92.8
96.0
122.8
135.9
90.4
95.2
98.4
125.9
139.3
92.7
97.6
100.9
128.9
142.7
95.0
100.0
103.4
132.0
146.1
97.2
102.4
105.8
135.0
149.6
99.4
104.8
108.2
1 kA p k
10.2
12.8
15.4
17.9
20.5
23.0
25.6
28.2
30.7
33.3
35.8
38.4
41.0
43.5
46.1
48.6
51.2
53.8
56.3
58.9
61.4
64.0
66.5
69.1
71.7
74.2
76.8
79.3
81.9
84.5
87.0
89.6
92.1
94.7
97.3
99.8
102.4
104.9
107.5
110.1
112.6
The manufacturer reserves the right to change technical data or design without prior notice 04/06
ABB Switzerland Ltd./PTHA 3210.2006-04E
email: sales.sa@ch.abb.com / phone: +41 58 585 29 11
ABB
Surge arresters
MWK
Clearances
Dimensions (in mm)
M 12 x 20
H
57
87
M 12 x 20
105
Insulation data, dimensions and weight
Type
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Creepage
distance
Flashover
distance
Recommended
clearances (4)
E min
F min
Height H
Weight
Insulation withstand voltage of empty housing
BIL 1.2/50 µs
req.values
tested
acc. to IEC
values
50 Hz 60s wet
req. values
tested
acc. to IEC
values
mm
mm
mm
mm
mm
kg
kV p k
kV p k
kV rms
kV rms
269
269
269
269
269
344
344
418
418
418
418
418
492
492
492
492
492
567
567
567
567
641
641
641
641
641
641
865
865
865
865
865
865
865
865
865
865
865
939
939
939
183
183
183
183
183
223
223
263
263
263
263
263
303
303
303
303
303
343
343
343
343
383
383
383
383
383
383
503
503
503
503
503
503
503
503
503
503
503
543
543
543
51
61
71
81
91
101
112
122
132
142
152
162
172
183
193
203
213
223
233
244
254
264
274
284
294
304
315
325
335
345
355
365
376
385
396
406
416
426
437
446
457
60
71
81
91
101
111
121
131
141
152
162
172
182
192
202
212
222
233
243
253
263
273
283
293
303
313
324
334
344
354
364
374
384
394
404
414
424
435
444
454
465
187
187
187
187
187
227
227
267
267
267
267
267
307
307
307
307
307
347
347
347
347
387
387
387
387
387
387
507
507
507
507
507
507
507
507
507
507
507
547
547
547
1.3
1.4
1.4
1.5
1.5
1.9
1.9
2.2
2.2
2.3
2-3
2.4
2.7
2.7
2.8
2.8
2.9
3.2
3.2
3.3
3.3
3.6
3.6
3.7
3.7
3.8
3.8
4.7
4.7
4.8
4.8
4.9
4.9
5.0
5.0
5.1
5.1
5.2
5.2
5.4
5.4
16.0
20.0
24.0
28.0
32.0
36.0
40.0
44.0
47.9
51.9
55.9
59.9
63.9
67.9
71.9
75.9
79.9
83.9
87.9
91.8
95.8
99.8
103.8
107.8
111.8
115.8
119.8
123.8
127.8
131.8
135.7
139.7
143.7
147.7
151.7
155.7
159.7
163.7
167.7
171.7
175.7
90
90
90
90
90
112
112
132
132
132
132
132
152
152
152
152
152
172
172
172
172
192
192
192
192
192
192
252
252
252
252
252
252
252
252
252
252
252
252
252
252
7.4
9.3
11.1
13.0
14.8
16.7
18.5
20.3
22.2
24.0
25.9
27.7
29.6
31.4
33.3
35.1
36.9
38.8
40.6
42.5
44.3
46.2
48.0
49.9
51.7
53.5
55.4
57.2
59.1
60.9
62.8
64.6
66.5
68.3
70.1
72.0
73.8
75.7
77.5
79.4
81.2
28.0
28.0
28.0
28.0
28.0
36.0
36.0
43.0
43.0
43.0
43.0
43.0
50.0
50.0
50.0
50.0
50.0
56.0
56.0
56.0
56.0
62.0
62.0
62.0
62.0
62.0
62.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
82.0
(4) National and local requirements have priority and may be used.
ABB Switzerland Ltd./PTHA 3210.2006-04E
email: sales.sa@ch.abb.com / phone: +41 58 585 29 11
ABB