KT500
RCD Tester
Operating Instructions
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1. SAFETY
1.1 Equipment Markings
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550V
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CAT
III
500V
Caution - refer to the instruction manual.
Construction is double insulated.
Product should be recycled as electronic waste.
Conforms to EU standards.
Prohibited to use on Electrical Systems which use voltages
above 550V.
Measurement Category III is applicable to testing and
measuring circuits connected after the source of the
building’s low-voltage MAINS installation. This part of the
installation is expected to have a minimum of two levels of
over-current protective devices between the transformer and
connecting points of the measuring circuit.
Examples of CAT III are measurements on devices installed
after the main fuse or circuit breaker xed within the building
installation. Such as distribution boards, switches and
socket outlets.
This tester’s voltage rating for CAT III location is 500V where
the voltage is Phase (line) to Earth.
1.2 Operational Safety
The KT500 is designed to be used by skilled persons in accordance
with safe methods of work. If the KT500 is used in a manner not
specied by Kewtech, the protection provided by it may be impaired.
Inspect the product before using. If any damage is visible; such as
cracks in the casing, damage to any accessories, leads or probes,
the unit should not be used.
Do not operate the KT500 with the battery cover off as this will
compromise the insulated safety barrier.
To maintain safety, ensure serviceability and to monitor accuracy of
the KT500 the tester should be checked on a checkbox such as the
Kewtech FC2000 checkbox at regular intervals.
When connecting to mains, ensure the colour coding on the test
leads and terminals is adhered to.
Although fully protected against over voltage up to 440V, the tester
should only be used on 230V systems.
Contents
KT500 RCD tester
KAMP 12 Mains lead
Batteries
Carry Case
Manual
Optional
ACC063 distribution board lead set
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2. DESCRIPTION
The KT500 is a digital RCD tester that will test the most commonly
encountered RCD’s to current standards. This includes standard (AC)
type, selective (ACS) type and A type RCD’s.
2.1 Features
• AC, ACS, A type RCD testing
• 30mA Auto test
• Ramp Test
• x½ , x1 test on all RCD types
• x5 test on 30mA RCD’s
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• Auto 0º - 180º cycle
• AC Voltage VLN
• Distribution network operator polarity test pad
• Result Recall
• Hands free function
• Polarity, voltage present LED
• Auto switch off function for battery preservation.
2.2 Indication
The white display backlight will illuminate on switching on and during
testing. To preserve battery life the backlight will switch off after
approximately 4 seconds of inactivity. The unit will automatically
power off after approximately 3 minutes of inactivity. To switch the
tester back on after auto power off press any button. A fail condition
will be indicated by a red backlight and a warning tone.
0-180º
Battery status
Ramp
Mains voltage
indication
LCD display shown in the ramp test function.
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