Siemens 3NP353 Mode D'emploi page 2

Fused switch disconnector
Instructions
Safety from finger-touch
Degree of protection IP 20 to IEC 60529, DIN 40 050
Degree of protection IP 30 with moulded-plastic masking frame with the fuse carrier
closed
Commissioning and maintenance by qualified persons only.
Follow the operating instructions!
Application
The fuse switch disconnectors are used for closing on and disconnection of rated
operating currents up to 160 A AC.
Installation
For dimension drawings, see Fig. Ia (dimensions in mm).
Maintain clearances to earthed components!
For permissible mounting positions, see Fig. Ib.
For rear mounting, see Fig. IIa, b. Ensure that the surface is level!
For installation apertures and mounting holes, see Fig. Ic.
Fit contact carrier with 2 M5 (not hexagonal-head) screws. Always use plain and
spring washers.
Fit insulating-material block 3NY12.., see Fig. IIc, d.
For top hat rail mounting, see Fig. III.
3NP3535, 3NP3536, 3NP4015, 3NP4016
For mounting on bus system, see Fig. IVa (bar thickness: 5 mm) or
b (bar thickness: 10 mm).
For dismounting, see Fig. IVc.
For mounting in line between two mounting rails, see Fig. V.
Connection
Main conductor:
solid/stranded
flexible with connector sleeve
laminated copper strips, without holes
Terminal access for test gauge B8 to DIN VDE 0660 Part 100, IEC 60947-1
Conductor insulation stripping length
Tightening torque
Multiple connection with 3-phase busbar und feeder terminal with 3NP3530,
3NP4010, see Fig. VI.
Length of terminal screws (according to conductor cross-section):
2
70 and 95 mm 10 mm
2
25, 35 and 50 mm 14.5 mm
Tightening torque 8 to 10 Nm
Note: The feeder terminals must be located as closely to the centre position as
possible (see Fig. VIa).
Busbar adapter: Openings at top for main conductor connection, see Fig. IVa, 1.
Auxiliary switch
Slip-on terminal DIN 46244 - A.2.8 - 0.5
With control voltage >AC 25 V all
connections must be insulated.
Operation
Caution: If you use an auxiliary switch (Fig. VIII), ensure that this switch is correct-
ly actuated (even when the shutter is fitted) by way of the handle unit (Fig. IId, e).
See Fig. VII for fitting of the fuse links or disconnecting links.
Use fuse links with silver-plated blades or silver-plated disconnecting links only!
See Fig. IIe for fuse carrier installation.
Voltage test (only possible with 3NP401)
Use voltage test probes with diameter of ≤ 2.4 mm and minimum length of
38 mm.
The voltage is picked up at the fuse blades.
Function with direct voltage
- U < 150 V DC, see Fig. IXa
e
2
2
1 x (1.5 to 50) mm
2
1 x (1.5 to 35) mm
8 x 8 mm
min. 16 to max. 18 mm
3 to 3.5 Nm
- U < 220 V DC, see Fig. IXb
e
DIN VDE 0660 Part 107, IEC 60947-3
Order No.: 3ZX1012-0NP30-1AA2
WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
AND BURNS.
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Maintenance
Grease the main contacts according to switching rate (with Shell Alvania RLQ2 or
another high-grade aging-resistant mineral-oil-based lithium-soap grease/
worked penetration: 265 - 295, service temperature: -30 to +120 °C).
For replacement of the fuse line, see Fig. VII.
Retrofitting of auxiliary switch 3NY303., see Fig. VIII and Fig. Vc, 7.
Tightening torques of notched screws:
Technical data
Weight
Permissible ambient temperature
- Operation
- Storage
Operational performance
Insulation rating U
i
Rated impulse strength
Rated current I = continuous current
th
2)
Size of fuse links
Rated conditional fused short-circuit current
at
and
Rated short-circuit making capacity with isola-
ting links
at
Rated thermal currents
Fuse link
Fuse switch disconnector
open-type
Fuse switch disconnector
enclosed
1)
125/160 A only possible with 21 mm wide fuse links
3NY1822 (125 A) and 3NY1824 (160 A); with 160 A also use feeder terminals
3NY1236!
2)
Permisssible fuse links (max. width 21 mm):
LV HBC fuse links
- Size 00 with reduced dimensions to DIN 43620
- Size 000 to IEC 60269-2-1
Semiconductor fuse links
- used on request
The ratings for operation and of the fuses must not exceed the ratings of the
equipment.
Auxiliary switch 3NY3035, see Fig. VIII
Rated thermal current
Rated operational current I /AC-14
e
at 230 V, 50/60 Hz
Electronically compatible auxiliary switch 3NY3030, see Fig. VIII
Rated thermal current
Rated operational current I /AC-13
e
at 230 V, 50/60 Hz
For further data see Catalog NSK.
3NP353, 3NP401
English
10 to 18 Ncm
3NP3530 3NP3535 3NP3536
3NP4010 3NP4015 3NP4016
(40 mm) (60 mm)
0.47 kg 0.81 kg 0.88 kg
-25 °C to +55 °C
-50 °C to +80 °C
2000 switching cycles
690 V
U 6 kV
imp
1)
160 A
000/00
(with max. width of 21 mm)
I 50 kA (rms)
I 100 A/160 A
n
U AC 500 V/AC 400 V
e
U AC 400 V
e
I 2 kA
I 160 A
e
I 160 A
th
I I x 0,9
the th
I 5 A
th
0.25 A
I 0.1 A
th
0.1 A