the future in the focus..
The SCHUCH-product range:
Explosion-proof light fittings
Water-proof light fittings
Industrial light fittings
DE I N
Outdoor light fittings
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Emergency light fittings
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Competence and innovation
in explosion-proof-lighting
RMA
ADOLF SCHUCH GMBH
Lichttechnische Spezialfabrik
Mainzer Straße 172, D-67547 Worms, Postfach 21 45, D-67511 Worms
Telefon ++49 (0)6241/4091-0, Fax Inland-Abt. 4091-171, Fax Export-Abt. 4091-29
info@schuch.de, www.schuch.de
Explosion-proof fluorescent light fittings
history
SCHUCH - For more than 100 years a bright pioneer
SCHUCH is known as a specialist for problem solving in the lighting technology especially under extreme ambient conditions, for more than one century. SCHUCH
is continuously giving new impulses to the market based on the results of its own
intense R&D-activities
SCHUCH is frequently doing pioneer work in the field of “explosion-proof light fittings”
and proofs always anew its innovative energy in this challenging special field of lighting
technology. SCHUCH has influenced and promoted the development of today’s
explosion-proof fluorescent light fittings fundamentally, from the beginning and
therefore affected the corresponding standards significantly.
The name SCHUCH is intrinsically tied to this field of lighting technology.
1988/15.09.
Worldwide first registration of an explosion-proof
ECG (Ex e) for bi-pin fluorescent lamps.
(type q 2439, PTB Ex-88.B.2068 U)
1988/14.12.
Worldwide first registration of an explosion-proof
lamp socket (Ex e) for bi-pin fluorescent lamps.
(type e 2410, PTB Ex-88.Y.2601 U)
1989/10.03.
Worldwide first explosion-proof fluorescent light fitting (Ex e) for bi-pin
fluorescent lamps (series e15241/42 EVG,PTB Ex-89.Y.2602). A groundbreaking
solution under economical standpoints. For the first time ever all over available standard fluorescent lamps can be used in Ex e-light fittings.
- 2 years ahead of all competitors. With this SCHUCH has
become precursor/pathfinder for the modern
explosion-proof fluorescent light fitting.
Milestones in the development of light fittings
1910
The first SCHUCH light fittings for the mining industry were
shipped to the coal mines in the Ruhr and the Saar area.
(Types 2611 / 2612)
1998/12
The explosion-proof ECG q 2439 comes with
the “End-of-life”-Cut-off system according
to CDV IEC 61347-2-3/A1. (PTB 98ATEX1119 U)
CDV IEC
61347-2-3
1929
SCHUCH has a wide product range of explosion-proof light fittings and
light fittings for the mining industry, junction boxes, switches and sockets
OF increased safety (EX e) and flame-proof casing (Ex d). Pendant-, wall
mount - and ceiling mount light fittings, hand- and hand carry light
fittings, tank inspection light fittings etc. for incandescent lamps.
The explosion-proof light fittings are a main focus part within
our product range.
2002/29.04.
1953
2003/25.02.
Initial registration of the explosion-proof
fluorescent light fitting, series e 111..
with sheet steel housing. (PTB III-B/E 3062)
PTB confirms the “End-of-life”-Cut-off of the explosion-proof
ECG q 2439 according to EN DIN IEC 61347-2-3/A1.
1958
2003/21.10.
Initial registration of the explosion-proof
fluorescent light fitting, series e 114.. POL
with polyester housing. (PTB III-B/E 6527)
The explosion-proof ECG q 2439 is fitted with noise suppression
up to 300 MHz (standard = 30 MHz)
1960
2005/24.01.
Initial registration of the explosion-proof
sheet-steel fluorescent light fitting, series
e 117.. with glass pane (PTB III-B/E 8854)
1977
Initial registration of the explosion-proof
fluorescent light fitting, types e 1246/62
POL for 65W (PTB III-B/E 28287)
1978
Worldwide first registration of an explosion-proof electronic
ballast (type q 2439, PTB 98ATEX1119 U, 2.amendment)
with »end-of-life-Cut-off« complying with the newest
insights in regard to the new standards
(draft standard IEC 60079-7
dated 29. April 2005).
2005/01
Initial registration of the explosion-proof fluorescent light fitting,
types e 1242/22 POL for 2 x 20W with one 40W tandem ballast (Ex e).
(PTB III-B/E 29499)
The explosion-proof ECG q 2439 fulfils the requirements of the
over-voltage category III (standard = over-voltage category II)
1986/10.01.
2005/11
Initial registration of the explosion-proof electronic ballast
(ECG), type q 2439 for single-pin fluorescent lamps.
(PTB Ex-85/2192 U)
1986/08.09.
Initial registration of the explosion-proof fluorescent
light fitting, series e 151.. EVG with electronic ballast for single-pin fluorescent
lamps. (INIEX 86.102.536)
2
Worldwide first registration of an explosion-proof
fluorescent light fitting with ECG (Ex e) for a
maximum ambient temperature of 60°.
(series e 152.. EVG)
Initial registration of the explosion-proof emergency fluorescent
light fitting series e 148.. EVG with micro-processor controlled
intelligent emergency electronic, integrated ECG with
»End-of-life«-Cut-off and for a maximum
ambient temperature of 55°C.
(PTB 05ATEX2066)
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end of life
explosion-proof
ecg q 2439
The end-of-lifePhenomenon »EOL«
SCHUCH doing pioneer work
Lately there have been some damages (fires) with bi-pin fluorescent
lamps in explosion-proof light fittings. A potential cause for these
incidents can be found in the »Endof-life«-Effect (EOL) of the lamps. In
exceptional cases this can occur at
the end of the lifetime due to excessive surface temperatures at the
lamp sockets which can damage the
lamp holders so that they will lose
their protective function in regard to
the explosion-protection. (see the
report of the PTB in Braunschweig,
www.explosions-schutz.ptb.de /pruefung-plex-komp-langfeld.htm).
The problem of the »End-of-life«-Effect and its relevance for the explosion protection has
been recognized by SCHUCH - as a competent and experienced lighting manufacturer
- in good times.
Since December 1998 the explosion-proof ECG q 2439 which is installed in all SCHUCH
explosion-proof fluorescent light fittings for zone 1 comes with the »End-of-life«-Cut-off
according to CDV IEC 61347-2-3/A1.
The most recent generation of the SCHUCH explosion-proof ECG q 2439 comes with 2
EOL-Safety circuits on both ends of the lamps (corresponding to the draft standard
IEC 60079/7, dated 29. April 2005), ensuring the permanent monitoring
of the lamp circuits in regard to the EOL-Effect and
the safe cut-off in case of a failure.
1. Asymmetrischer Pulstest (Test 1)
The asymmetrical pulse-test simulates an EOL-lamp by
increasing the resistance asymmetrically by 15 kΩ for a
duration of 3 ms and a pause of 3 ms respectively 27 ms.
These disturbing pulses usually occurring at the end of
the lifetime, especially during the cold start will be
recognized by the ECG and the lamp-circuit is cut-off,
safely.
2. Asymmetrischer Leistungstest (Test 2)
The lamp operating voltage and therewith the output will
increase at the end of the lifetime of fluorescent lamps.
The asymmetrical output-test simulates directly the increase
of the output, resulting from the increase of the asymmetrical voltage in case of an EOL-situation.
This increase is continuously monitored and the affected
lamp circuit will be cut-off safely as soon as the limit of
10W will be exceeded.
After installing a new lamp the ECG and therewith
the light fitting will work properly again.
I.e. the lamp is being monitored continuously, a costintensive maintenance of the fluorescent lamp is not
necessary.
4
15
10
3
k
3
3
3
5
3
27
0
0
Zeit / ms
Lampenspannung
Zeit
5
explosion-proof
product range
The highlights of explosion-proof fluorescent light fittings
With this most recent explosion-proof
ECG generation, SCHUCH again was
pioneer in this industry. With the PTBcertificate PTB 98ATEX1119 U, 2.
amendment, dated 24. January 2005
the SCHUCH explosion-proof ECG
q 2439 is the first explosion-proof
ECG worldwide, complying with the
newest insights in regard to the new
standards (draft standard IEC 60079-7
dated 29. April 2005).
As a matter of course this quality
product does offer further strong
advantages:
- Double-channel unit with separate
lamp-monitoring
- The explosion-proof ECG q 2439
fulfils the requirements of the overvoltage category III (standard = overvoltage category II)
- Increased noise suppression up to
300 MHz (standard = 30 MHz)
- Applicable for emergency light fit
tings connected to group- or central
battery systems, due to DC-detection
and change-over to DC-operation
with 1 lamp (version ZB).
As a specialist for light fittings SCHUCH does have one of the largest and
versatile/manifold lighting programs in the field of explosion-protection, worldwide. One of the important sections is our range of explosion-proof fluorescent light fittings with increased safety. In all
series within this product range (see pictures) our top-quality
explosion-proof ECG q 2439 with the most recent EOL-technique
is the »heart« of each individual light fitting.
IEC
60079-7
In addition all the explosion-proof fluorescent light fittings made
by SCHUCH do show a variety of further quality features, such as:
- Usage of top-quality materials with a lot of mechanical safety
built-in for the housings and covers
- Sturdy, safely working central-locking system with stainless steel hinges
- Isolating switch, user-friendly, positively-driven
optical switch indicator
e 152..
Polyester light fittings
e 152.. pm
Polyester pole mount
light fittings
e 148..
Polyester emergency light
fitting with integrated
battery
- Reliable for ambient temperatures
up to +60°C (for light fittings e 152..
18/36W / 20/40W)
- Long lifetime with a low failure
rate (100.000 h with a failure rate
< 2 ‰ / 1000 h). Due to the special
silica sand encapsulation in the aluminium housing the explosion-proof
ECGs from SCHUCH remain extremely
cool and therefore show outstanding
values on the operating
temperatures.
e 181/182..
Sheet steel light fittings
with tapered body
e 187/188..
Sheet steel light fitting with
tapered body for areas
extremely endangered by dust
Please compare!
Quality does make
the difference!
e 191/192..
Sheet steel light fitting with
extremely low profile for
ceiling- or recessed mounting
Further details on the individual explosion-proof fluorescent light fittings, our
complete explosion-proof product range, as well as on the scope of water-proof
light fittings, industrial light fittings, outdoor and emergency light fittings can
be found in our catalogue or at our web site www.schuch.de
Check it out - we are looking forward to your visit.
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