Sparks Electrical News December 2016

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SPARKS
ELECTRICAL NEWS DECEMBER 2016
TOOLS OF THE TRADE
16
COMTEST, accredited southern African partner to
Fluke, has announced extended specifications and
new advanced features on their tried-and-tested
1650 Series multifunction installation testers that
verify domestic, commercial and industrial electrical
installations, and ensure fixed wiring is safe and
correctly installed to meet local and international
IEC 60364, HD 384 standards.
The 1650 Series allows users to measure loop
impedance without tripping RCDs, eliminating the
need to bypass them. Slim reach probes keep eyes
on the panel whilst the user probes hard to reach
areas. With a large display and a wide viewing angle,
padded neck strap, and a compact, ergonomic design,
these testers are comfortable enough to use for all-
day testing.
The 1650 Series extended specifications are:
• Fast high current loop test (high current mode).
• Advanced loop testing prevents RCDs from trip-
ping.
• Variable RCD current mode for customised set-
tings.
• Zero adapter for easy test lead compensation
The ‘pass’/’fail’ indicator takes the guesswork out
of RCD testing.
• Insulation test voltages (1652C: 250 V, 500 V,
1 000 V), (1653B/1654B: 50 V, 100 V, 250 V,
500 V, 1 000 V) for a variety of applications.
• Select voltage measurement between L-N, L-PE,
and N-PE.
• Dual display gives simultaneous readout of mains
voltage and frequency.
• Auto discharge allows fast and safe discharge of
electrical energy in capacitive circuits.
• Added safety through live circuit detection, to
check and inhibit test if circuit under test is live.
• Wiring connection check indication and live circuit
detection for added safety.
• Time-saving auto-null feature subtracts lead re-
sistance from measurements, and stores it in
memory even after powering down.
• High resolution measurements down to 0.01 ohm for a high level of accuracy.
• User selectable safety voltage level of 50 V or
25 V for varied environments.
• Perform ground tests with auxiliary earth spikes
eliminating the need for multiple instruments
(1653B/1654B only).
• Download up to 444 (1653B) or 1 500 (1654B)
stored results with IR port and adapter for
professional reporting.
• Detachable leads for easy replacement
EN-61557 and VDE 0413 compliant.
Enquiries: +27 10 595 1821
INSTALLATION TESTING SOLUTION FOR DEMANDING ENVIRONMENTS
The HR2631F Rotary Hammer from Makita
is powered by an 800 W motor and pro-
duces speed and efficiency during drilling,
chiselling and demolition operations in reinforced
concrete.
The anti-vibration technology built into this
specific model will produce unrivalled lower
levels of vibration. This is achieved by using active
vibration absorbers and a damper spring that
absorbs the reaction force caused by the drill bit at
the moment of impact.
Another great new addition on the HR2631F is
the rotation reversing system using a brush holder
unit. The advantage of this system extends the life
of the carbon brush by 2.7 times longer than the
existing models, protecting the brush from dust and
debris and providing the same speed and torque
even in reverse.
The one-touch sliding chuck allows for quick and
easy bit changes. This three-mode rotary hammer
has an easy- to-operate operation mode change
lever that is located on the top of the gear housing
enabling the user to switch between rotation and
hammering modes and vice versa without rotating
the chuck. There are 40 different bit-angle settings,
which are adjustable without a chisel adaptor and
then, of course, the rotation with hammering.
The HR2631F has a LED job light that illuminates
the work area.
Specifications include 0 – 4 600 blow per
minute and a no-load speed of 0 – 1 200 r/min.
This rotary hammer weighs 2.9 kg and comes with
a 2.5 m power supply cord. A depth gauge and a
side handle are included as standard items but bits
are sold separately.
TheMakitaHR2631Fwith its low level of vibration
(11.5 m/s2) will make a substantial difference to
both user and project alike, enhancing operator
comfort and productivity.
For further information or information about your
nearest Makita dealer, visit
Enquiries: +27 11 878 2600
ROTARY HAMMER
WITH ANTI
VIBRATION CONTROL