Electricity + Control January 2015

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Transportable device calibrates many types of electronic equipment
The Comtest Group, Fluke's authorised
Test and Measurement Distributor for
South and southern Africa, has introduced
the Fluke 5522A multi-product calibrator
which is specifically designed to improve
the capabilities of calibration laboratories
across all industries. The 5522A, based on
Fluke’s top-seller 5520A series calibrator,
aims to provide daily service both inside
and outside of the calibration lab because
it is durable enough to be safely transported
for on-site or mobile calibration of a wide
variety of electronic test tools.
The Fluke 5522A is ideal for metrology
engineers, technicians and lab manag-
ers who need to calibrate many different
types of electronic equipment and require
a transportable instrument that delivers a
high return on operators’ capital invest-
ment. For a single calibrator, the Fluke
5522A gives the flexibility to calibrate a
wide range of instruments and can be fully
automated with MET/CAL Plus Calibration
Management Software for greater produc-
tivity. Several reliability-enhancing features
protect it against damage andmake it easier
to transport for on-site or mobile calibration.
Internal circuits and fuses protect against
damage caused by applying too much volt-
age or current.
Front and rear access doors are remova-
ble and the 5522A can be used while its top,
bottom and side panels remain protected,
all without having to completely unpack and
re-pack the calibrator. A redesigned front
panel and carrying handles make it easy
to transport the calibrator short distances
within the lab.
Verwer.Tel. 011 608 8520
or email
HV-resistant, insulated down conductor
The HVI Conductor is a high-voltage-resistant, insu-
lated down conductor from DEHN. Unlike conven-
tional lightning protection systems, which must be
adapted if photovoltaic or air-conditioning systems
are subsequently installed on the roof, the insulated
lightning protection based on HVI Conductors is both
durable and sustainable and can remain as it stands.
When using conventional lightning protection
systems, it is often not possible to maintain the nec-
essary separation distances, but this is no problem
with the HVI Conductor thanks to its unique design
and special sheath. The lightning current carrying
conductor of the HVI Conductor is wrapped with
insulating material in such a way that the required
separation distance from other conductive parts of
the building, electric lines and pipes is maintained.
The coaxial conductor consists of an inner copper
conductor with a high-voltage-resistant thick-walled
insulation and a weather-resistant semi-conductive
special outer sheath.Thus, creeping flashover along
the surface of the conductor is prevented. The HVI
Conductor is easy to install, as it has variable sealing
ends. Tools, such as the HVI strip, further facilitate
installation. The HVI Conductor is an ideal solution
for external lightning protection systems on a wide
range of applications; from residential and industrial
buildings, to wind turbines, photovoltaic systems,
biogas plants, mobile phone antennas and systems
of the process industry with hazardous areas such
as gas compressor stations and oil rigs.
Enquiries: Alexis Barwise.Tel. 011 704 1487 or email
Protection relay with advanced control features
NewCode is a three-phase motor protection relay with seven in-
puts of differential voltages from 24 to 220V ac or dc and four fully
programmable output contacts as standard. The relay caters for
the low voltage motor protection market and provides advanced
protection and control features.The ISO 9001:2000 compliant relay
has a user-friendly operation, advanced LED indications for I/Os,
fault indication, relay address and infrared data communications.
NewCode provides thermal overload, over and under voltage and
voltage symmetry protection, as well as frequency, power factor and
power dissipation measurement. More advanced features including
starter logic and logic function blocks which, coupled with its com-
munication options, make the NewCode relay an ideal solution for
plant protection and automation.
The three–phase recorder allows the user to record the motor
currents, voltages, thermal capacity and power factor. The motor
performance can be monitored and analysed in real time. This is
particularly useful when tripping occurs for no obvious reason.The
recorder alleviates to some degree the need for sophisticated equip-
ment to be carried around the plant. NewCode has a non-volatile and
volatile memory. The non-volatile memory contains a boot loader
program which is used to upload the operating software program
of the relay. The uploading is done from a personal computer or
laptop via the USB port. This feature also enables the user to do
future software upgrades without factory assistance.
Enquiries: Email or visit
EARTHING + LIGHTNING PROTECTION ROUND UP
Electricity+Control January ‘15 22