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What
is Antistatic Equipment?
By antistatic equipment we mean equipment used for discharging static
electricity from the surfaces of materials or for preventing unwanted
static charges from taking place. Antistatic equipment is used in all
lines of industry where static electricity has to be eliminated as
Electrostatic charges can lead to production disturbances,
environmental work problems as well as dust and sanitary problems.
Swedish Electrostatic equipment utilizes the principle of active
ionizing using equipment that comprises a power unit coupled with a
suitable type of electrode for ionizing the surrounding air. The most
common component is the single and double row antistatic bars that have
a fairly limited active range. Where increased active range is required
air can be passed across the electrodes of the bar or nozzle or
alternatively ionizing fans may be used.
Power units for running the ionizing equipment are chosen according to
the demands of the installation. Basic power units are available, as
well as units having integrated air supplies, and ones which are able
to interface with other equipment such as web cleaners in dust
extraction systems. Auxiliary equipment such as extension boxes, pre
made cables and air handling equipment facilitate ease of installation.
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Antistatic
Bars
The
most common component
in antistatic equipment installations is without doubt the antistatic
bar. Typical applications are discharging of sheets or webs in
printing, converting, packaging, plastics production etc where
materials cannot be processed or moved due to electrostatic charge.
Another important area of application is the cleaning of surfaces that
cannot be satisfactorily cleaned due to dust and dirt particles being
electro statically attracted to the surfaces.
To choose correctly from the different types of antistatic bars it is
necessary to consider the conditions and possible constraints for the
installation. The efficiency of ionizing equipment depends on the
distance between the equipment and the material surface to be
discharged as well as the speed. As a general rule it can be said that
with shorter distances and moderate speeds single row bars can be used.
With increasing speeds and distances double row bars are being used,
while finally applying blowing antistatic bars if required.
Blowing antistatic bars are used with great success in applications
where one needs to remove unwanted particles such as dust, dirt, chips,
lint, fibres etc. from material surfaces. The blowing air acts both as
a carrier for charges to discharge the area and mechanically to blow
the particles away from the surface.
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Antistatic
Bars non air blowing type - ABAC11 & ABAC21
 The
ABAC
range of non air blowing antistatic bars is available in a single
(ABAC11) or double (ABAC21) row configuration. Standard housings are
anodised Aluminium with Stainless Steel available on request.
These antistatic bars are built to customers specifications and can be
provided in a self supporting design up to a length of 3 metres. The
aluminium shell makes the electrodes completely safe to touch and
shields off the electrostatic field in all directions.
Separate high ohmic resistors connect each individual pin to the high
voltage lead in the electrode providing high reliability and safe
operation in harsh industrial environments.
The bars are connected in series to a power unit by means of an
interchangeable shielded high voltage cable, ensuring installation is
safe, uncomplicated and flexible.
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Antistatic
Bars air
blowing type - ABACA21
 The
ABACA
range of air blowing antistatic bars is available in a double (ABAC21)
row configuration. Standard housings are anodised Aluminium with
Stainless Steel available on request.
These antistatic bars are built to customers specifications and can be
provided in a self supporting design up to a length of 3 metres. The
aluminium shell makes the electrodes completely safe to touch and
shields off the electrostatic field in all directions.
Separate high ohmic resistors connect each individual pin to the high
voltage lead in the electrode providing high reliability and safe
operation in harsh industrial environments.
The bars are connected in series to a power unit by means of an
interchangeable shielded high voltage cable, ensuring installation is
safe, uncomplicated and flexible.
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Air
blow nozzles -
BHAC 11
 The
BHAC11 nozzle
has been developed for blowing ionized air in a concentrated area.
Typical applications are discharging and cleaning in electronics, optic
and pharmaceutical industry where cleanliness is important. BHAC11 can
also be used for separating sheets in feeding/picking operations and
removing charges whilst filling and packaging for instance in
lacquering plants etc.
BHAC11 is made with an outer aluminium shell, which together with the
shielded high voltage cable gives safe and easy handling, with no
electrostatic fields from the installation itself.
Dry and clean air at an air pressure of between 0.5 - 1 bar pressure is
applied to the unit via a quick release coupling typically using 6mm
pneumatic hose. This air supply may be regulated using a range of
accessories such as regulators, foot operated valves and solenoid
valves.
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Power
Unit - PUAC 114
 The
power unit
PUAC114 has been developed to run antistatic equipment such as
antistatic bars ABAC11, ABAC21 and ABACA21 as well as air-blow nozzles
BHAC11 and BHAC21.
PUAC114 is built into an IP65 aluminium casing which gives long life
and reliable operation in harsh industrial environments.
The equipment is connected via a shielded high voltage cable to ensure
safe and easy handling also ensuring no electrostatic field is
generated by the equipment itself.
PUAC114 produces 4.8kV AC voltage and 5mA current (max) and has both a
built-in thermal fuse and a fuse for short circuit protection. The
power unit has an illuminated on-off switch and 4 identical high
voltage outputs. Units are available for both 230V and 115V AC.
Swedish Electrostatic can also supply DC high voltage power units both
for discharging and charging applications as well as a complete range
of measuring devices for electrostatics.
Ionizing Gun - BHAC11-G
A pistol grip
version of the air blowing nozzle is available for applications where
manual cleaning is required
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Ionizing
Fans 
The Ionizing Fan IFAC21 or AIR JON is used together with the high
voltage transformer PUAC114 and is intended for discharging static
electricity where it is difficult to install the conventional
antistatic bars of the ABAC-series close enough to the objects.
The ionizing fan is sturdy and made of stainless steel sheet in 400mm
modules with aluminium endplates which are used for mounting the fan on
to machines, walls etc
The Ionizing Fan IFAC21 is particularly well suited for use with
three-dimensional objects such as glass fibre objects, textiles,
PET-bottles, conveyors , unwinds and rewinds, nylon sieves etc. The
vital components are the antistatic bars ABAC11 which are mounted in
the endplates.
The Ionising
Fan IFAC21 has fans with motors that connect to 230 VAC. Fans are
equipped with fan guards and filter holders containing a polyester
filter.
IFAC21 is a cost effective way of transporting ionized air from the
bars to distances between 0.5 and 2 metres away from the object . The
ionizing fan IFAC21 is supplied completely equipped with antistatic
bars ABAC11, mains lead and mounting bolts in lengths from 400mm to
2800mm.
The free flowing air capacity from one 400mm module is in the region of
300 m /hour, while the AIR JON gives a free air capacity in the region
of 40 kbm/min.
All fans are equipped with long life slide bearings but can be offered
with ball bearings as an alternative. The fan can in many applications
be a more economical choice than the blowing antistatic bar due to the
high cost of producing compressed air.
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Web-Cleaning
- CHBS21
 CHBS
is a complete
system for contact less cleaning of particles like dust, lints, fibres
etc. Most materials handled in a lot of industries are insulators,
which means that while being processed they build up a high static
charge. Airborne particles and those generated from the process due to
friction, slitting, cutting, etc are also charged. The attraction
between particles and surface is usually very strong.
The CHBS unit consists of four important elements utilizing an
integrated bar where ionizing, compressed air and vacuum work together.
The PUAC114 power unit delivers a high voltage to the antistatic bars.
Compressed air ensures effective transmission of the ionised air,
whilst a high performance vacuum pump ensures the unit delivers a
constant high vacuum at all times to remove the unwanted particles. The
CHBS unit is usually a double-sided system but can in special cases be
designed for single sided cleaning. All parts are designed to
industrial standards and are CE-certified. The CHBS unit is a low-noise
system (68 dba) and can be placed almost anywhere.
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Measuring
instrument - JCI 140
 The
JCI 140 is a
compact, easy to use instrument for direct non-contact measurement of
surface voltage to a volt or better at l00mm.
The high useable sensitivity makes it particularly easy to find even
low levels of static charge. Readings are displayed on a 3½
digit liquid crystal display. The frequency response of the standard
JCI 140 is about 35Hz. The JCI 140F option provides response to 400Hz.
Analogue output signals are provided for separate display and recording
of observations - for example using a multimeter, oscilloscope or paper
chart recorder. A ‘Picoscope’ provides direct data
logging
and display on a microcomputer. This enables the full bandwidth
capability of observations to be available for display and numerical
processing via Spreadsheet software. Attachments are available that
enable the JCI 140 to be used to measure charge (JCI 147), to make
electrostatic voltmeter measurements (JCI 148) and to monitor the
charge dissipation capability of ionised air (JCI 145).
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