3B Scientific D 900 User Manual
3B SCIENTIFIC
Low Voltage Coil D 1000985
Coil D, 600 turns 1000988
Coil D, 900 turns 1012859
Coil D, 1200 turns 1000989
Coil D, 6000 turns 1000990
Instruction sheet
06/12 ALF
®
PHYSICS
1. Safety instructions
The coils conform to the safety regulations for electrical test, control and laboratory equipment as
specified in DIN EN 61010 Part 1. They are intended for use in dry rooms suitable for electrical
equipment or installations.
Safe operation of the coils is guaranteed, provided they are used correctly. However, there is
no guarantee of safety if the coils are used in an
improper or careless manner.
If it is deemed that the coils can no longer be
operated without risk (e.g. visible damage has
occurred), the coils should be switched off immediately and secured against any inadvertent use.
In schools and training institutions, operation of the
coils is to be responsibly supervised by trained
personnel.
Depending on the set-up of the
transformer, it may be possible to
come into contact with dangerous
voltages at the secondary coil.
1
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 components 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 secondary coils in combination with the transformer
core D (1000976).
Coils with a variety of winding turns and intermediate taps. A suitable choice of coil enables all
experiments to be performed safely at low voltage. Simple whole-number winding and intermediate 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 current for long-term operation, effective resistance,
direction of windings and inductance are specified on the case of the coil. The current may
reach approximately double the long-term maximum for short periods (10 seconds).
1000985
1000988
1012859
1000989
1000990
Winding turns Tap(s) Resistance Max. current Inductance
72 6/30/54/66/72 0,1 Ohm 12 A 0.23 mH
600 200/600 3 Ohm 2.2 A 15 mH
900 4.8 Ohm 5 A (7 min) 34 mH
1200 400/1200 12 Ohm 1.2 A 60 mH
6000 2000/6000 300 Ohm 0.2 A 1.5 H
The coil with 900 windings has a reversible temperature 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
Opening for iron core: 42 x 42 mm
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Elwe Didactic GmbH ▪ Steinfelsstr. 5 ▪ 08248 Klingenthal ▪ Germany ▪ www.elwedidactic.com
3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
Rights to amend technical specification reserved
© Copyright 2012 3B Scientific GmbH
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