SERIES NT

ITALIANA
RELE
SERIES NT
AC Linear Solenoids
Open frame linear solenoids ideally suited
for AC applications, having the frame and
the
plunger
of
laminated
steel
construction, featuring high permeability
and low magnetic losses. They are
designed to be operated in any position,
being able turning an electric pulse into an
axial pull action. Coil winding insulation
being in Class F. Performance, as shown
in the following diagrams, is always
referred to a temperature rise of 80°C in
open air, with 35°C ambient temperature
and coil fed at 105% of rated supply
voltage (as per VDE 0580). Since the
mechanical
energy
generated
by
solenoids is a constant, any amount of
that force eventually not utilised by
relevant application will be expended
under form of impact force. Consequently,
any application should correctly use the
smallest available solenoid performing the
required action, not exceeding the
maximum
admitted
operational
temperature. To select the right solenoid,
an exact determination of the duty cycle is
equally essential: whenever the maximum
cycle is exceeding 300 seconds, a
continuously rated solenoid (ED=100)
should be used. Otherwise the relative
duty factor would result as follows:
ED% =
ON time . x 100
(On + OFF time)
(Cycle = ON + OFF time)
RELATIVE DUTY FACTOR (ED%)
ON and OFF times corresponding to
relative duty factors lower than ED=100
result, for standard ED values, from the
following diagram:
Current values given in our diagrams are
at nominal voltage. Forces shown are
referred to solenoids fed @ 90% of rated
voltage, with ‘hot’ coil and 20°C ambient
temperature.
Any AC solenoid, due to its high power
consumption (VA), will rapidly overheat
and fail to operate, whenever its plunger is
prevented from seating properly. To avoid
this, a proper spring can be interposed
between plunger and application. When
adopting a solenoid please also bear in
mind what follows:
1) Any load should be always applied
strictly along the plunger main axis (to
avoid excessive wear due to friction, and
noise magnifying due to vibration
generated by the AC power supply).
2) Any mechanical stroke-limiting device
eventually provided, should be made of
non magnetic material.
ED 40
ON OFF
Operation
per hour
Total cycle
(seconds)
12
300
120
180
120
300
600
1200
1800
3000
30
12
6
3
2
1.2
12
4.8
2.4
1.2
0.8
0.48
18
7.2
3.6
1.8
1.2
0.72
ED 25
ON OFF
75
225
7.5 22.5
3.0 9.0
1.5 4.5
0.75 2.25
0.5 1.5
0.3 0.9
ED 15
ON OFF
45
255
4.5 25.5
1.8 10.2
0.9 5.1
0.45 2.55
0.3 1.7
0.18 1.02
ED 5
ON OFF
15
3) The expected life of a solenoid would
be remarkably increased as much as its
impact force could be absorbed by the
solenoid mounting frame.
When a continuously rated (ED=100)
solenoid is required but space is not
enough, a resistor and/or a limiting
impedance could be used to feed a
smaller intermittently rated solenoid
(ED<100). Models NT1 and NT2 are
supplied with built-in fixing brackets, while
models NT3 and NT4 have no bracket,
even if these are available as a separate
optional kit (for mounting on left, right or
lower side position, as required).
Prior to select the right solenoid you must
always know the force required, as well as
stroke, maximum feeding time, minimum
OFF time, ambient temperature and
supply voltage. If in doubt to select the
best type for your application, please do
not hesitate contacting us to help you
making the right choice, supplying us with
all above required information. Even if you
can’t find the solenoid you require in our
range, please let us know, as we do have
both the experience and the know-how to
solve any problem in this field.
1 - Solenoid series: NT
2 - Type (size) :1-2-3-4
3 - Coil supply voltage (AC only).
4 - Coil terminals:
F = Faston 0.25 (6.3x0,8mm)
C = 150mm leads
5 - Relative duty service ED%:
Permanently (100) or intermittently
rated coils (standard values: 40-2515-5)
6 - Fixing brackets (NT1-NT2 only):
D = on right side (standard)
S = on left side (on request)
7 - Coil supply frequency
(if different from 50 Hz).
ORDERING IMFORMATION
NT3-24AC-F100-D60
1
2
3
4
5
6
7
285
1.5 28.5
0.6 11.4
0.3 5.7
0.15 2.85
0.1 1.9
0.06 1.14
NB: When ordering standard types
you can omit the last two groups
of code (6 and 7).
I T A L I A N A R E L E' S r l. - Via dei Bravi, 40 I-20032 CORMANO - Italy
Tel (+39) 02 6140851- Fax (+39) 02 6140339 - E-mail: [email protected] - www.rele.it
AVAILABLE TYPES
NT1
Coil supply voltages :
Insulating resistance :
Dielectric strength :
Coil terminals :
Total weight :
Plunger weight :
Axial Force (Kg) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
2
5
10
15
20
12-24-110-220-230-240 VAC (50 or 60Hz)
> 100 MΩ @ 500V DC
1.5 KV
Faston 6.3x0.8 mm or leads (150mm)
190 grams
50 grams
Coil Rated Current (VA) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
0
2
5
10
15
20
100
1.10
0.70
0.55
0.45
-
100
22
50
84
118
136
40
1.85
1.25
0.95
0.75
-
40
55
97
137
176
190
25
2.05
1.45
1.05
0.85
-
25
68
110
154
198
216
15
2.40
1.70
1.20
0.95
-
15
84
132
172
220
238
5
2.85
1.95
1.40
1.05
-
5
112
158
207
248
258
NT2
Coil supply voltages :
Insulating resistance :
Dielectric strength :
Coil terminals :
Total weight :
Plunger weight :
Axial Force (Kg) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
2
5
10
15
20
12-24-110-220-230-240 VAC (50 or 60Hz)
> 100 MΩ @ 500V DC
1.5 KV
Faston 6.3x0.8 mm or leads (150mm)
240 grams
75 grams
Coil Rated Current (VA) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
0
2
5
10
15
20
100
1.70
1.40
1.05
0.75
-
100
27
51
79
108
121
40
2.70
2.20
1.60
1.10
-
40
75
132
192
260
295
25
3.10
2.50
1.80
1.25
-
25
97
160
225
285
318
15
3.60
2.90
2.05
1.40
-
15
120
187
253
308
340
5
4.30
3.40
2.40
1.70
-
5
154
225
284
340
370
NT3
Coil supply voltages :
Insulating resistance :
Dielectric strength :
Coil terminals :
Total weight :
Plunger weight :
Axial Force (Kg) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
2
5
10
15
20
12-24-110-220-230-240 VAC (50 or 60Hz)
> 100 MΩ @ 500V DC
1.5 KV
Faston 6.3x0.8 mm or leads (150mm)
260 grams
75 grams
Coil Rated Current (VA) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
0
2
5
10
15
20
100
2.10
1.60
1.00
0.80
0.70
100
19
63
99
132
154
172
40
2.70
2.05
1.30
1.00
0.95
40
35
96
148
198
232
268
25
2.90
2.20
1.40
1.20
1.05
25
44
110
165
215
250
278
15
3.10
2.35
1.50
1.30
1.15
15
53
132
185
232
270
298
5
4.00
2.90
1.85
1.50
1.35
5
97
176
235
290
345
378
NT4
Coil supply voltages :
Insulating resistance :
Dielectric strength :
Coil terminals :
Total weight :
Plunger weight :
Axial Force (Kg) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
2
5
10
15
20
12-24-110-220-230-240 VAC (50 or 60Hz)
> 100 MΩ @ 500V DC
1.5 KVs
Faston 6.3x0.8 mm or leads (150mm)
340 grams
110 grams
Coil Rated Current (VA) Vs.
Stroke and Duty Service (ED)
Stroke (mm)
ED
0
2
5
10
15
20
100
3.35
2,70
1.85
1.35
1.15
100
27
105
168
235
280
300
40
4.00
3.20
2.15
1.70
1.45
40
50
150
235
325
390
435
25
4.30
3.40
2.40
1.80
1.55
25
70
175
270
385
485
550
15
4.60
3.60
2.55
1.90
1.65
15
95
210
320
430
520
585
5
5.30
4.20
2.90
2.10
1.8
5
165
285
400
515
605
705
I T A L I A N A R E L E' S r l. - Via dei Bravi, 40 I-20032 CORMANO - Italy
Tel (+39) 02 6140851- Fax (+39) 02 6140339 - E-mail: [email protected] - www.rele.it