3B Scientific Coil D, 900 Turns - Manual (Page 2)

Elwe Didactic GmbH ▪ Steinfelsstr. 5 ▪ 08248 Klingenthal ▪ Germany ▪ www.elwedidactic.com
3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
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© Copyright 2012 3B Scientific GmbH
Coils 1000988, 1012859, 1000989,
1000990 can be subject to high or low
voltages when used as secondary
coils. They are not suitable for
experiments performed by students.
• Eingriffe in den Aufbau eines Transforma-
tors nur bei abgeschalteter Primärspannung
vornehmen.
• Always use safety cables for experiments.
• Do not exceed the maximum voltage over
any length of time.
• Do not open the coils’ cases.
• Do not allow the equipment to come into
contact with liquids.
• If the coils should become overloaded, they
must be allowed to cool before switching on
the current again.
• Do not cover the air vents.
The resulting magnetic fields can cause damage
to or even destroy electrical/electronic compo-
nents and equipment or electromagnetic storage
media. Such items must be kept away from the
coil by at least the amount specified for safety.
2. Description
Coils, safe to touch, for use as primary or sec-
ondary coils in combination with the transformer
core D (1000976).
Coils with a variety of winding turns and interme-
diate taps. A suitable choice of coil enables all
experiments to be performed safely at low volt-
age. Simple whole-number winding and interme-
diate tap ratios allow the transformer laws to be
derived in clear and understandable fashion.
Coils are made of impact-resistant plastic. The
ends and taps for the coils are equipped with
safety sockets. Number of turns, maximum cur-
rent for long-term operation, effective resistance,
direction of windings and inductance are speci-
fied on the case of the coil. The current may
reach approximately double the long-term ma-
ximum for short periods (10 seconds).
The coil with 900 windings has a reversible tem-
perature cut-out inside, which trips when the
winding temperature reaches 85°C. It resets
after about 10-20 minutes depending on the
ambient temperature.
3. Accessories
Mains coil D with connecting lead (230 V, 50/60 Hz)
1000987
or
Mains coil D with connecting lead (115 V, 50/60 Hz)
1000986
Transformer core D
1000976
4. Care and maintenance
• Before cleaning the coil, disconnect it from
its power supply.
• Use a soft, damp cloth to clean it.
5. Disposal
• The packaging should be disposed of at
local recycling points.
• Should you need to dispose of the coil itself,
never throw it away in normal domestic
waste. Local regulations for the disposal of
electrical equipment will apply.
6. Technical data
Connections:: 4-mm safety sockets
Dimensions: 120 x 90 x 70 mm 3
Opening for iron core: 42 x 42 mm 2
Winding turns Tap(s) Resistance Max. current Inductance
1000985 72 6/30/54/66/72 0,1 Ohm 12 A 0.23 mH
1000988
600 200/600 3 Ohm 2.2 A 15 mH
1012859 900 4.8 Ohm 5 A (7 min) 34 mH
1000989 1200 400/1200 12 Ohm 1.2 A 60 mH
1000990 6000 2000/6000 300 Ohm 0.2 A 1.5 H