PR-NEG-8EN.pdf - 第3页

3 Electric External V ibrators Designs and ambi ent conditions Stainless steel vibrators are resistant to very harsh enviro nmental co nditions. Especially the ch emical, pharmaceut i- cal and food indu stries use this r…

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2
Electric External Vibrators
Contents
Page
Notes on vibrator design 2
Designs 3
and ambient conditions
Information 3
on the NEG/NEA/NED series
Applications, design and function
NEG series 4–7
Three-phase alternating current
NEA series 8–9
Single-phase alternating current
NED series 8–9
Direct current
Page
NEG E series 10–11
NEG as ATEX version
NEG S series 12
Stainless steel, especially smooth surface
NES series 13
Stainless steel, for chemically aggressive
ambient conditions
NEG/NEH series 14
High frequency electric external vibrators
Special designs 15
Accessories
15–16
Notes on Vibrator Design
Formulary
working moment
M = s x
m
centrifugal force
F = a
(g)
x
m x 9,81
acceleration
(
𝑛
1000
)
)
2
x 5,59
centrifugal force
F = M x
(
𝑛
1000
)
)
2
x 54,84
Symbols and units
Which kind of vibration for which task?
All external vibrators manufactured by NetterVibration comply with the applicable EU directives and bear the CE mark.
Many external vibrators made by NetterVibration meet the standard C22.2 no. LR100-95, file no. LR100948 Part B.
Class 421101 Motors and Generators (North America).
s
vibration width
cm
m
weight with vibrator
kg
F
centrifugal force
N
n
frequency
min
-1
M
working moment
cmkg
a
(g)
acceleration
g
circular
directed
750 – 3000
1000 – 1500
1500 – 3000
1500 – 3000
2 – 5
3 – 4
3 – 5
2 – 3
0,15 – 0,2 of the material weight
in the conical part of the silo
2 – 4
0,8 – 1,5
0,5 – 5
large
large
medium
medium
1500 – 3000
1500 – 6000
3000 – 9000
300 – 6600
medium
small
adjustable
3
Electric External Vibrators
Designs and ambient conditions
Stainless steel vibrators are resistant to very harsh environmental conditions. Especially the chemical, pharmaceuti-
cal and food industries use this resistance in production areas with aggressive, liquid and gaseous media.
ATEX vibrators allow operation in explosive atmospheres (ATEX Zones 1, 2, 21 and 22) using special design
measures in which gases, vapours, mists and dusts are used. These vibrators, which meet very high safety stand-
ards, find a use especially in the chemical and petroleum industry.
Plastic vibrators have the advantages of stainless steel devices, but are much lighter. The useful properties of
these vibrators are used in the manufacture of dairy products (e.g. cheese), throughout the food industry and in
extreme industrial applications.
Information on the NEG, NEA and NED series
Conveying
Sieving
Compacting
Applications
The electric external vibrators of the series
NEG, NEA or NED are always used when,
for example, conveyor troughs or sieves
have to be driven.
In addition, these vibra-
tors can loosen product jams and deposit
build-ups in silos. When used on concrete
formwork, a high surface quality and com-
paction of the concrete is achieved by a
particularly uniform vibration.
One special feature of the NEG is the
maintenance-free operation even under
harsh environmental conditions.
Design and function
External electric vibrators are unbalance
motors based on the short circuit rotor
principle and, apart from a few decisive
differences, are very similar to commercial-
ly available electric motors. The NEG
three-phase vibrators run on 230/400 V,
50 Hz, depending on the number of poles,
at 750, 1.000, 1.500 or 3.000 min
-1
.
The NEA AC units run on 230 V, 50 Hz at
3.000 min
-1
. Further voltages are available.
The NED DC vibrators run on 12 or 24 V at
3.000 min
-1
(NED 601110 only on 24 V,
3.600 min
-1
).
There are unbalances on both shaft ends,
which generate an omnidirectional, sinus-
oidal vibration with the frequency of the
corresponding speed.
All NEG/NEA are also designed for use at
60 Hz, the speed is then correspondingly
20 % higher than the values at 50 Hz. The
unbalance is adjusted, if necessary.
Generously dimensioned roller bearings
guarantee a high degree of operational
safety. All NEG are fully suitable for opera-
tion with Netter frequency converters.
Series
NEG
NEA
NED
NEG E
NEG S
NES
Plastics
up to GG 60
●
●
●
●
●
●
●
●
●
●
3
4
Electric External Vibrators
NEG 3-phase AC Series
min
–1
Type
Housing
Unbalance
[cmkg]
Centrifugal force
[N]
Nominal power
[kW]
Nominal current
[A]
Weight
[kg]
size
material
T**
[°C]
50 Hz
60 Hz
50 Hz
60 Hz
50 Hz
400 V
60 Hz
4
6
0 V
50 Hz
400 V
60 Hz
460 V
50 Hz
60 Hz
3000
3600
NEG 5020*
60
AL
100
0,4
0,4
197
284
0,035
0,035
0,15
0,15
2,40
2,40
NEG 5050*
1
1
494
711
0,045
0,045
0,16
0,16
2,45
2,45
NEG 5060
100
AL
120
1,2
1,2
592
853
0,12
0,12
0,27
0,23
4,9
4,9
NEG 50120
101
AL
120
2,4
2,4
1.185
1.706
0,18
0,18
0,35
0,30
5,8
5,8
NEG 50200
4
3,2
1.974
2.274
6,4 6,2
NEG 50300
110
AL
120
6
4
2.961
2.843
0,26
0,27
0,60
0,50
9,6
9,3
NEG 50550
120
AL
120
11,5
6,9
5.676
4.904
0,45
0,50
0,80
0,75
15,2
16,1
NEG 50770
130
AL
120
14,7
11
7.255
7.818
0,65
0,685
1,10
1,00
19,5
19,9
NEG 501140
133
AL
120
22,4
14,7
11.056
10.448
1
1,2
1,75
1,75
21,5
20,5
NEG 501540
140
AL
31
21
15.300
14.925
1,4
1,45
2,3
2,0
35,0
32,8
NEG 501800
36
26
17.768
18.479
2,0
2,0
3,3
2,9
37,0
33,6
NEG 502020
150
GJS
41
26
20.236
18.479
2,2
2,2
3,5
3,0
48
47
NEG 502270
46
31
22.704
22.033
2,2
2,2
3,5
3,0
49
49
NEG 503400
170
GJS
66
44
32.575
31.272
4,0
4,0
6,2
5,4
106
102
NEG 503820
77
55
38.004
39.090
4,0
4,0
6,5
5,6
103
103
NEG 506220
190
GJS
135
126
89
62.189
63.255
5,5
5,5
9,2
8,0
188
181
NEG 508830
195
GJS
–
179
124
88.347
88.130
10,0
9,3
18,0
13,0
215
210
1500
1800
NEG 2530
101
AL
120
2,4
2,4
296
426
0,085
0,095
0,21
0,20
6,0
6,0
NEG 2570
6,4
4
790
711
6,9
6,2
NEG 25210
110
AL
120
16,8
16,8
2.073
2.985
0,17
0,17
0,41
0,40
12,3
12,3
NEG 25420
120
AL
120
32,6
22,7
4.023
4.033
0,30
0,35
0,60
0,60
19,4
18,4
NEG 25540
43,8
32,6
5.404
5.792
21,8
20,8
NEG 25700
130
AL
120
57,2
41,9
7.058
7.445
0,525
0,665
0,92
0,98
26,4
25,4
NEG 25930
133
AL
120
75
52
9.254
9.239
0,55
0,68
0,95
0,95
28,8
27,3
NEG 251410
140
AL
120
112
80
13.820
14.215
0,9
1,05
1,45
1,5
43
39
NEG 251800
143
97
17.645
17.235
1,1
1,2
2,0
1,9
50
45,3
NEG 252060
163
112
20.113
19.900
1,35
1,45
2,5
2,3
54
52
NEG 252370
160
AL
150
192
135
23.691
23.987
1,6
1,7
3,2
3,0
69
63
NEG 253050
135
247
172
30.477
30.561
1,9
2,0
3,8
3,5
78,5
79
NEG 253720
170
GJS
135
302
207
37.264
36.780
2,2
2,5
3,9
3,9
127
122
NEG 254310
349
235
43.063
41.755
2,5
2,8
4,8
4,65
125
120
NEG 254900
180
GJS
135
397
273
48.986
48.507
3,6
3,4
6,0
5,0
174
166
NEG 256460
190
GJS
135
524
365
64.656
64.854
6,0
6,0
10,5
9,0
212
200
NEG 258040
195
GJS
135
652
452
80.450
80.312
7,0
8,0
11,6
11,5
225
210
NEG 258260
197
GJS
135
669
492
82.548
87.419
7,5
8,5
12,2
12,0
316
303
NEG 2511210
200
GJS
909
633
112.162
112.472
10,0
10,5
17,5
15,5
433
411
NEG 2513850
1.123
825
138.567
146.587
11,0
12,0
20,0
20,0
458
424
* degree of protection IP 65, ATEX II 3D Ex tc IIIC Dc
PTC thermistors are from housing size 170 up.
** at an ambient temperature of 40 °C max.,
other temperatures on request
Unbalance type XL Unbalance type XS Unbalance type XLs
ATEX II 2D
Ex tb
IIIC Db
AL
150
150
AL
135
135
–
–
–
135