Kewtech KEWPROVE 4 User manual

KEWPROVE 4
Proving Unit
1. SAFETY
1.1 Equipment Markings
1.2 Operational Safety
Warning - Risk of Electric Shock!
The proving unit generates up to 690V.
The KEWPROVE 4 is to be used by skilled persons
in accordance with safe methods of work.
If the proving unit is used in a manner not
specified by Kewtech, the protection provided by it
may be impaired.
Inspect the proving unit before using. If any
damage is visible such as cracks in the casing the
unit should not be used.
Before use ensure the proving unit is free from
moisture, grease and dust. If the unit requires
cleaning use a soft dry cloth only.
2. DESCRIPTION
The UK designed KEWPROVE 4 Proving Unit
provides a safe and reliable means of checking
the correct operation of multimeters and two pole
voltage indicators (VI).
2.1 Features
• Intelligent voltage ramp for testing multimeters
and VI’s.
• Generates outputs from 50 - 690V with a true
AC waveform at 50Hz. This means it will always
read correctly using the AC range of your tester
or multimeter.
• Powerful enough to light old filament style
lamps.
• Automatic operation and turn-off for ease of use
and battery conservation.
2.2 Indication
The voltage ramp indication on all proving units
is displayed clearly using red LEDs.
The KEWPROVE 4 indicates at 50/100/230/
400/690 V.
A blue LED Power indicator that will flash to
indicate when batteries need to be changed.
3.0 USAGE
3.1 Battery Installation and Status.
The KEWPROVE 4 has 6 x LR6 AA alkaline
batteries.
Do Not use rechargeable batteries.
The batteries are accessible by removing two
screws on the rear of the unit’s case.
Ensure all testers are disconnected before
accessing batteries.
Do not mix old and new batteries.
For maximum life use only good quality batteries.
Dispose of batteries as required by local
regulations.
The Blue power LED will flash when in operation
if the batteries need to be changed.
3.2 Operation
kewtechcorp.com
Caution - refer to the instruction manual
Construction is double insulated
Product should be recycled as
electronic waste
Confirms to EU standards
Red
voltage
indication
LEDs
Blue power
indication
LED. (Flashes
when battery
needs
changing).
Voltage
indicator
test
points.

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3.3 How to Use
1) Prove your voltage indicator (VI) is working by
placing a probe in each test point. Contact the
bottom with the right hand probe then apply gentle
downward pressure on the left hand probe. This
will activate a micro switch, the blue power LED
will illuminate and the proving unit will launch into
Auto Prove Mode.
2) The Proving Unit will automatically step up to
690V. The unit then steps the voltage back down,
(690V - 400V - 230V - 100V - 50V - OFF).
To reprove the VI again, simply raise and then
depress the left hand probe and the Auto Prove
Mode will cycle again.
Advantages of the Auto Prove Mode
• Individual voltages are applied at key voltage
test points.
• If the two pole VI draws a high current from the
proving unit the Auto Prove mode will pause.
This is useful if testing certain types of two pole
voltage testers, including those with filament
lamps.
• Significant battery savings as the power is
automatically switched off when the proving
test is complete.
• After completion of the auto prove there is a
closed circuit between the voltage indicator
test points. This means that if your VI has a
continuity function it will prove its operation and
sound to confirm completion of the process.
3) Having established that your VI is working
correctly carry out the testing required. If you
are in doubt at any time use the proving unit to
reprove the correct functioning of the VI.
4) Having completed your testing with the VI use
the proving unit to ensure that it is still functioning
correctly.
4. MAINTENANCE AND SERVICE
If required, clean with a soft, dry cloth. Do not use
abrasives or solvents.
The only user replaceable parts are the 6 x AA
alkaline batteries.
There are no user serviceable parts.
Output voltage 50 - 690V in five steps (50V, 100V,
230V, 400V, 690V)
Safety
compliance BS EN 61010-1 : 2010
EMC
compliance 61326-1 : 2006
Operating
conditions -10º to +35ºC at 95% RH
Maximum
output power 10W
Batteries 6 x LR6 AA alkaline batteries
Battery life 10 hours with average use when
testing high and low power testers
Dimensions W68 x H130 x D48mm
Weight With batteries 350g
5. SPECIFICATIONS