safety transformers for low voltage supply 12volt waterproof series are ideal
for demanding applications if correctly installed by a qualified person
and if the following instructions are adhered to precisely.
mains supply before installation commences.
mains tension as well as the connected load must be the same as that shown on
the label. Do not exceed the maximum
load of the transformer.
not lengthen the lead from the transformer to the lamp fittings to avoid anexcessive
transformer is classified as Class II double insulated so it does not require
lead with label attached (230 or 240V~) must be connected to the mains supply,
where Blue is Neutral and Brown is Live.Black lead without label must be connected
to the low voltage load (lamps) – Follow transformer label indications.
although classified as waterproof up to 30 centimetres in depth, should
not be installed in water.The Transformer’s IP68 classification
can withstand the effects of accidental immersion in water due to temporary flooding
of a room or after heavy rain or a storm, naturally if the mains power supply
is adequately protected as well.
is therefore ideal for use in humid area or where water, rain or snow may be present.It can be placed in an adequate inspection well, or near fountains and
small lakes or other sheets of water in general.
can also be buried directly into the ground but only after ensuring that the
hole size is at least double thatof the transformer, has good water drainage
and is packed with sand under, around and on top of the transformer.This to ensure firstly, water drainage and secondly, when filling with
normal earth or stones, compacting or earth settlement do not cause the risk of
deformation of the housing box which would then not guarantee watertightness.
Care should be taken that the input
and output cables are not distorted near the cable glands or forced in such a
way as to loosen the glands.Protect the
mains lead against abrasion or impact damage as requested by electrical rules.To avoid housing box deformation, do not install under earth, in a walking
area or transitable site.
housing box guarantees watertightness if correctly installed, but housingdeformation, from whatever
cause, will not provide the same guarantee.For
thisreason before using the transformer, correct installation must
be controlled andassured.Do not hold or carry the transformer by the electrical cables or install
in a way that will deform the transformer
housing box, as this may cause water toenter via the cable gland nuts.Rewiring of the transformer may compromise
the IP rating of the fitting and may invalidate the guarantee.Should rewiring be necessary, for
any reason, please read with attentionto
the last paragraph below.
that the housing box is made in plastic, so please take care not to deform the box.
installing the transformer (if it is to function during daylight hours) directly
in sunlight, as the temperature within the housing box, particularly during the
summermonths, could reach very high levels
causing the automatic thermal protection to intervene thus shutting down the transformer
and resetting it only when the temperature has returned to normal levels.The polycarbonate housing box can however,
remain exposed to the sun’s rays without any adverse effect. The transformer is
normally supplied with 1,8 – 2 metres of pre-wired cable.
requested without cables or when rewiring is necessary, transformer should
only by a qualified person or electrician.When
removing the lid of thehousing box, care should be taken of
the positioning of the washer, as this needs to be re-installed
in exactly the same position after ensuring that the area is completely
clean of earth, dust etc.
only electrical cable with an adequatesection
function of load amperage and the minimum length possible on the low voltage
side, to limit voltage drop.Cables
should be sleeved with heavy duty sleeving (such as HO5RN-F) with a round section.A small section (but not below 2x0,75 mm) can
be used on the primary side (a different section from primary and secondary, assists
later in recognizing the mains cable, if the same colour is used).Care should be taken to tighten the cable glands but not excessively to
avoid the cable gland slipping on the housing
box with possible moisture penetration.
locking of cable with softrubber sleeving can simply be achieved by tightening
with fingers without the use of any particular type of tool.Mains supply input cable (230 or 240 volt)
is to be connected to the two pole primary terminal block where the two small
brown or black(sometimes one brown and
one white) wires from the transformer are already connected.(Indications of mains supply cables are indicated on the transformer label,
inside of the box).The other two pole
terminal block where the secondary coil enamelled has yellow or red copper wires
are connected directly, is for the 12 or 24 volt output cable.For ease of assembly, it is recommended that the cables are pushedfurther through the cable glands, then connect the cables to the terminal
blocks and tighten the holding screws.Correctly
position the washer and the lid and pull on the non-required extra cable.Strongly screw down the lid with the supplied screws with a screwdriver
and then tighten the cable glands.Prior to positioning the transformer ensure
that all the washers are correctly placed in their seating and that the lid itself
does not move in respect to the housing body.A little movement can be possible only with
an application of a considerable force.This means that the housing box is correctly