Spacial EMC solution
Electromagnetic protected
steel enclosures
Introduction
General
The increasing presence of electromagnetic interference in industrial environments,
together with the use of equipment susceptible to such interference requires the use
of suitably protected enclosures.
In order to suppress electromagnetic interference, S3HF enclosures, due to the type
RIVKHHWPHWDODQGVSHFLDOJDVNHWVXVHGIXO¿OWZRIXQFWLRQV
b Provision of adequate screening, with the effectiveness of a Faraday cage.
b Ability to provide effective protection of sensitive equipment by using galvanised
sheet metal chassis, and by following recommended installation procedures.
Electromagnetic interference
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SRWHQWLDOVDQGDPDJQHWLF¿HOG0FDXVHGE\FXUUHQWFLUFXODWLRQZKLFKFRPELQH
WRIRUPHOHFWURPDJQHWLF¿HOG
The electromagnetic interference or "noise" is a disruptive electrical signal which
affects the useful signal and it likely to cause a malfunction.
Interference can be carried through the conductors or emitted through the
environment.
Main sources of electrical interference and equipment
sensitive to it
b
b
b
b
b
Programmable controllers.
Electronic circuits or boards.
Regulators.
Input signal cables (detectors, sensors, measurement probes).
Analogue signal cables.
Main sources of electrical interference
Material
Frequency range
Motors
7UDQVIRUPHUVUHFWL¿HUV
Inductive load switching
Spot welders
Fluorescent lamps
Relays, contactors
Switching power sources
Computers (internal clock)
Variable speed drives
Induction furnaces
Power cables, etc.
10 kHz… 100 MHz
10 kHz… 100 MHz
50 kHz… 10 MHz
10 kHz… 50 MHz
100 kHz… 3 MHz
10 kHz… 200 MHz
10 kHz… 30 MHz
50 kHz… 200 MHz
10 kHz… 100 MHz
0… 10 kHz
0… 10 kHz
DB300006
$WWHQXDWLRQOHYHORI(0&¿HOGV
7KHZDYHVRIHOHFWULFDORUPDJQHWLF¿HOGVDUHUHÀHFWHGZKHQWKH\PHHWWKHVKHHW
metal of the enclosure.
The effective rate of the screening or dampening "a" of the incident wave is
measured in decibels (dB) using the following formulae:
Incident
wave
E0
G%IRUHOHFWULFDO¿HOGV
E1
a = 20 log
H0
G%IRUPDJQHWLF¿HOGV
H1
Radiated
wave
5HÀHFWHG
wave
Enclosure surface
Outside
386
a = 20 log
Inside
b E0 and E1DUHWKHFXUUHQWYDOXHVRIWKHHOHFWULFDO¿HOGEHIRUHHQWHULQJDQGDIWHU
entering the enclosure respectively.
b H0 and H1DUHWKHPDJQHWLF¿HOGYDOXHV
Spacial EMC solution
Electromagnetic protected
steel enclosures
Introduction
Installation
According to the type of interference generated by the devices:
b Low frequencies, "conducted interference" (up to 30 MHz),
b High frequencies, "radiated interference" (higher than 1 MHz),
the rules to be taken into account relate to the choice of components that provide
the most economical solution to complete the installation.
Low-frequency interference
b Importance of the protection systems:
v ¿OWHUVRYHUYROWDJHVXSSUHVVRULVRODWLQJWUDQVIRUPHUIRUWKHSRZHUVXSSO\
v cable length.
High-frequency interference
b
v
v
v
Importance of the installation method:
earth connections, cable length and section,
cable selection and rules, cable runs, connections,
enclosures and installation.
Earth plate or
reference potential
sheet connected to
the chassis
DB300008SE-39
DB300007SE-40
6SHFL¿FV
Screen connections
P
/”
It is recommended to earth screens at both ends. In addition, it is advisable to
increase the number of intermediate earth connections.
If the screen is only earthed at one end, there can be a considerable difference in
potential between the two ends. In addition, this screen will be ineffective against
external high-frequency interference.
Transformers
Poor
The transformer chassis must be mounted, metal to metal, on the reference potential
plate, that is, on a plain chassis supporting the equipment.
Excellent
Soldered
DB300010SE-60
Earth connection
by the screws
Metal ground plate or
reference potential sheet
Cable runs
Paint = INSULATION
The metal ducts and conduits, when correctly connected, provide an extremely
effective second screen for the cables.
Cable ends must be screwed to the metal enclosures in order to provide an effective
connection.
DB300011SE-46
Excellent
Heating
Enclosures
Low level
The interfering and sensitive components, cables etc. should be installed in separate
enclosures or located at some distance from each other.
Note: )RUIXUWKHULQIRUPDWLRQFRQVXOW\RXUORFDOVDOHVRI¿FHRURXUHGXFDWLRQDOOHDÀHWHQWLWOHG
(OHFWURPDJQHWLFFRPSDWLELOLW\
To the power Mains
units
Actuators
Sensors
Probes
Detectors,
etc.
387
Electromagnetic protected
steel enclosures
Spacial EMC solution
Introduction
PB500205-46
Spacial S3HF wall-mounting enclosure IP55 IK10
From H 400 x W 300 x D 200 to H 1200 x W 800 x D 300 mm
b Metal monobloc enclosures constructed from special ALU-ZINC 150 sheet.
Body constructed from single folded and welded sheet.
b 7KHHQFORVXUHVXUIDFHFRPSULVLQJDOXPLQLXPHQVXUHVJRRGUHÀHFWLRQ
of radiated electromagnetic interference.
b 7H[WXUHGHSR[\SRO\HVWHUH[WHUQDOSDLQW¿QLVKFRORXUJUH\5$/
b Integral, galvanised, sheet steel, plain chassis (reference potential plate).
The low resistivity of this plate facilitates earth continuity. Special body/door gasket
(IP + EMC) providing both environment protection and continuity between the door
and body of the enclosure. Body completely sealed, without any cable entries
or apertures. Integral earth braid between enclosure body and door, ensuring
good earthing and, in consequence, good electromagnetic compatibility.
Metal closing points with earth continuity, thus improving overall screening.
EMC box, IP55.
PB501683-46
6SDFLDO60+)ÀRRUVWDQGLQJHQFORVXUH,3,.
From H 1800 x W 800 x D 400 to H 2000 x W 800 x D 600 mm
b Metal monobloc enclosure constructed from special ALU-ZINC 150 sheet.
7KHHQFORVXUHVXUIDFHFRPSULVLQJDOXPLQLXPHQVXUHVJRRGUHÀHFWLRQ
of radiated electromagnetic interference.
b ([WHULRUSDLQWHGZLWKDQHSR[\SRO\HVWHUH[WHUQDOSRZGHUSDLQW¿QLVK
colour grey RAL 7035.
b Integral galvanised sheet steel plain chassis (sheet potential reference).
The earth continuity is much easier thanks to its weak resistance.
b Special body-door seal (IP + EMC), providing not only water tightness, but also
electrical continuity between the door and the body, necessary for those assemblies.
Cable gland plate with special built-in seal (IP + EMC).
EMC enclosure, IP55.
PB501682-46
Spacial SFHF suitable enclosure IP55 IK10
From H 1800 x W 600 x D 600 to H 2200 x W 800 x D 800 mm
b 0HWDOH[WHQGDEOHHQFORVXUHFRQVWUXFWHGWKDQNVWRDFORVHGWULDQJXODUSUR¿OHGRRU
and panel from special ALU-ZINC 150 sheet. The enclosure surface, comprising
DOXPLQLXPHQVXUHVJRRGUHÀHFWLRQRIUDGLDWHGHOHFWURPDJQHWLFLQWHUIHUHQFH
b ([WHULRUSDLQWHGZLWKDQHSR[\SRO\HVWHUH[WHUQDOSRZGHUSDLQW¿QLVK
colour grey RAL 7035.
b Integral galvanised sheet steel plain chassis (sheet potential reference).
The earth continuity is much easier thanks to its weak resistance.
b Special body/door gasket (IP + EMC) providing both environmental protection
and electrical continuity between the door and body of the enclosure.
b Integral earth braid between enclosure body and door, ensuring good earthing
and, in consequence, good electromagnetic compatibility.
b The suite joining set is also available for the EMC enclosures, IP55.
(0&ÀRRUVWDQGLQJ
enclosure, IP55.
7KLVUDQJHFDQEHFRQ¿JXUHGDFFRUGLQJWR\RXUQHHGV
4 differents services available:
Assemble
to order
Mounting
of standard
accessories
Painting
See page 450 for details or consult our web site www.schneider-electric.com
388
Machining
Electromagnetic protected
steel enclosures
Spacial EMC solution
Introduction
DB300006
The next illustrations indicates the attenuation (dB) curves related to the frequency
(MHz).
Attenuation of the Spacial S3HF enclosure
General information on Electromagnetic Compatibility, see pages 386 and 387.
Enclosure surface
Outside
Attenuation (dB)
Radiated
wave
5HÀHFWHG
wave
PB500415
Incident
wave
Inside
0DJQHWLF¿HOG
(OHFWULFDO¿HOG
The presence of 55 % aluminium on the
surface of the sheet metal ensures good
UHÀHFWLRQRIHOHFWURPDJQHWLFZDYHV
Frequency (MHz)
Floor-standing compact enclosure
DB300716
The enclosure is tested with earth braids mounted on all claddings (test performed
following IEC 61587-3).
80
70
Attenuation (dB)
60
50
40
30
20
Mean vertical attenuation values
Mean horizontal attenuation values
10
0
10
100
1000
Frequency (MHz)
Floor-standing suitable enclosure
PB501694
Enclosure is tested with its sides panels and earth braids mounted on all claddings
(Test performed following IEC 61587-3).
80
70
Attenuation (dB)
60
50
40
30
20
Mean vertical attenuation values
Mean horizontal attenuation values
10
0
10
100
Frequency (MHz)
1000
389
Spacial S3HF - SMHF - SFHF
Electromagnetic protected
steel enclosures
PB500205-38
Characteristics
Characteristics
Spacial S3HF
Finish
Colour
Ingress protection rating
Mechanical protection rating
&HUWL¿FDWLRQV
Fixing
Height
(mm)
400
500
600
700
800
1000
1200
1800
2000
Width
(mm)
Depth
(mm)
Fig.
Weight (kg)
References
300
600
400
400
600
500
600
800
800
600
800
200
200
200
200
250
250
300
300
300
600
400
600
400
600
800
1000
400
600
800
1000
600
600
800
1
1
2
2
2
2
2
2
2
-
7.5
13.0
11.5
13.0
20.5
19.0
32.8
53.2
59.0
-
NSYS3HF4320P
NSYS3HF4620P
NSYS3HF5420P
NSYS3HF6420P
NSYS3HF6625P
NSYS3HF7525P
NSYS3HF8630P
NSYS3HF10830P
NSYS3HF12830P
-
600
800
2200
390
Single-piece metal enclosures made from special sheets of ALUZINC 150.
7KHSUHVHQFHRIDOXPLQLXPRQWKHVXUIDFHRIWKHVKHHWPHWDOHQVXUHVJRRGUHÀHFWLRQRIHOHFWURPDJQHWLFZDYHV
b Body
v single-piece body, folded and welded,
v entirely sealed body with no cable entry and no opening.
b (TXLSSHGZLWKIRXUVKRXOGHUHGEDFNVWXGVDOORZLQJGLUHFW¿[LQJRIWKHPRXQWLQJSODWH
v built-in plain mounting plate made from galvanised sheet steel (potential reference sheet),
v its low resistivity promotes earth continuity,
v GLUHFW¿[LQJRUXVLQJZDOO¿[LQJOXJVUHINSYPFCR (to be ordered separately).
b Door
v the special body-door gasket (IP + EMC) provides, in addition to water and dust tightness, electric continuity between
the door and the body of the enclosure,
v the metal lock with earth continuity helps improve the general shielding,
v an earthing braid added to the enclosure between the body and the door guarantees a good earth connection and,
consequently, good electromagnetic compatibility,
v 3 mm double-bar lock as standard delivery (if a 405 key is needed it is possible to mount ref. NSYCLL405CRN).
b Enclosure delivered with solid mounting plate.
Other sizes: consult us.
Painted on the outside with epoxy-polyester resin
RAL 7035 grey
IP55
IK10
Fixing lugs, ref. NSYPFCR to be ordered separately (1 set of 4 lugs)
600
800
Spacial S3HF - SMHF - SFHF
Electromagnetic protected
steel enclosures
PB501685-28
PB501683-34
Characteristics
Spacial SMHF
Spacial SFHF
b
v
b
v
v
b
b
b
b
b Structure
v galvanised-steel structure,
v top and bottom frame, vertical upright.
b Claddings
v enclosure with screwed panels (on side and rear) and front plain door
(with reinforcement frame) made from Aluzinc steel,
v side panels have to be ordered separately,
v special gasket (IP + EMC) between body, door and panels.
b 1 single plain door with door-reinforcement frame (double door on request,
please consult us).
b Left or right opening to 120°.
b Delivered with standard locking system handle and 5-mm double-bar insert.
b 1 rear panel screwed from the outside.
b 1 removable roof.
b 1 part cable-gland plate with special gasket (IP + EMC).
Body
body made from Aluzinc steel painted on the outside only.
Door
front plain door (with reinforcement frame) made from Aluzinc steel,
special gasket (IP + EMC) between body and door.
1 plain door with door-reinforcement frame.
Left or right opening to 120°.
Standard handle with 5-mm double bar.
1 part cable-gland plate with special gasket (IP + EMC).
Painted on the outside with epoxy-polyester resin (inside not painted)
RAL 7035 grey
IP55
IK10
RoHS compliant
-
Painted on the outside with epoxy-polyester resin (inside not painted)
RAL 7035 grey
IP55
IK10
RoHS compliant
-
References
Side panel references
Enclosure references
NSYSMHF18660P
NSYSMHF18860P
NSYSMHF20840P
NSYSMHF20860P
-
NSY2SPHF186
NSY2SPHF184
NSY2SPHF186
NSY2SPHF204
NSY2SPHF206
NSY2SPHF208
NSY2SPHF2010
NSY2SPHF204
NSY2SPHF206
NSY2SPHF208
NSY2SPHF2010
NSY2SPHF226
NSY2SPHF226
NSY2SPHF228
NSYSFHF18660
NSYSFHF18840
NSYSFHF18860
NSYSFHF20640
NSYSFHF20660
NSYSFHF20680
NSYSFHF206100
NSYSFHF20840
NSYSFHF20860
NSYSFHF20880
NSYSFHF208100
NSYSFHF22660
NSYSFHF22860
NSYSFHF22880
391
Electromagnetic protected
steel enclosures
Spacial S3HF - SMHF - SFHF
Dimensions
Spacial S3HF
Fig. 1
DB300148-170
A: Height.
B: Width.
C: Depth.
C
B
21
A-44
40
A- 5
B-44
A-75
A
A-50
10
B-50
B-75
B- 5
DB300148-170
Fig. 2
B
C
21
125
40
125
B-44
B-50
B-75
B-95/135*
B- 5
* Model 1200 x 800.
392
A- 5
A-75
A-50
25*
A
A-44
10
Electromagnetic protected
steel enclosures
Spacial S3HF - SMHF - SFHF
Dimensions
B
17
C
17
C+5
B-280
C-130
A-62
A-150
A
A-90
A-150
B-150
A-150
A: Height.
B: Width.
C: Depth.
DB300717-143
Spacial SMHF
600/800
393
Electromagnetic protected
steel enclosures
Spacial S3HF - SMHF - SFHF
Dimensions
A: Height.
B: Width.
C: Depth.
DB300389EN-151
Spacial SFHF
18 x 18
A+ 9
A
A - 150
A - 150
Ø 5.2
Ø 10.5
min. 85
max. C - 90
27
C - 90
C+5
C + 42
B - 150
C - 90
C - 125
C
B - 125
B - 219
B - 90
Ø 16
B
394
Spacial S3HF - SMHF - SFHF
Electromagnetic protected
steel enclosures
Accessories
All mounting accessories are compatible
with the SF and SM standard range.
PB500084-43
b Mounting plate (see page 220).
b Rails (see page 230).
b IUDPH¿[HGDQGVZLQJLQJVHHSDJH
Earth braids
b They guarantee the earth connection for high frequencies,
avoiding the disturbing electric currents that are produced.
b Material: tinned copper.
b Supply: 10 earth braids (nuts and washers not included).
Length (mm)
150
PB500513-49
155
200
Width (mm)
Section (mm2)
Terminal Ø (mm) References
12
17
17
27
33
6
10
16
25
50
6.5
6.5
6.5
6.5
6.5
NSYEB156D6
NSYEB1510D6
NSYEB1516D8
NSYEB2025D8
NSYEB2050D8
EMC coupling kit
b Used to join enclosures side-by-side or depthwise.
Special gasket for EMC solution.
Attenuation level is decreased by 5 db when enclosures are joined
(please consult us).
b Ingress protection rating: IP55.
Height (mm)
1800
2000
2200
Depth (mm)
Ref. SM EMC
400
600
400
600
800
1000
600
800
NSYSFHFBK184
NSYSFHFBK186
NSYSFHFBK204
NSYSFHFBK206
NSYSFHFBK208
NSYSFHFBK2010
NSYSFHFBK226
NSYSFHFBK228
395