KEW 5410 RCD Tester

• Measurement of RCD trip time
Conducting testing of rated residual non-operating currents at
× 1/2 Range, measuring RCD trip time at × 1 and × 5 Ranges.
• Measurement of trip out current
Measuring trip out current by varying current automatically.
• Remote Test
Enabling a user to hold the Test Leads with his both hands
by locking the Test Button. Measurement will automatically
start when the main voltage is detected.
• Voltage Measurement
Carrying out a constant measurement of voltage in the
stand-by mode at each Range.
• Auto-detection of Contact voltage
Detecting the voltage to earth of Earth electrodes or
Protective conductors during RCD test – when applying
test currents – at measurement using EARTH in order to
prevent electrical shocks caused by the damaged earth.
Measurement will be ceased at AC50V or more.
• Dust- and Water-proof
Dust- and Water-proof construction
(designed to IEC 60529 IP54).
• Backlight
Facilitating working at dimly illuminated locations.

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Measurement of RCD trip time – Measurement of trip out current

Range × 5 × 1 × 1/2 AUTO RAMP(mA)
Rated Voltage 100V±10%
Test current 15/30/50/100mA 15/30/50/100/200/500mA 15/30/50/100/200/500mA
Measuring range Testing time
Testing time
Testing time
40% – 110% of lΔn
(goes up by 5%)
Testing time
300ms × 15steps
(Trip Time)
1%rdg±3dgt 1%rdg±3dgt 1%rdg±3dgt Test Current at each step
(Trip Time)
+2%~+8%dgt +2%~+8%dgt -8%~-2%dgt

Voltage Measurement

Measuring range 80V~450V 50/60Hz
Accuracy 2%rdg±4dgt
Applicable standards IEC 61010-1 Pollution degree2 CAT III 300V / CAT II 400V
IEC 61010-031
IEC 61557-1, 6
IEC 60529 (IP54)
Display 1999 counts (3 1/2digits), Large LCD
Operating temperature & humidity range 0ºC – 40ºC, relative humidity 85% (no condensation)
Storage temperature & humidity range -20ºC – 60ºC, relative humidity 85% (no condensation)
Insulation resistance 50MΩ or more / 1000V (between electrical circuit and enclosure)
Sleep Function (1)Automatically enters Sleep mode in 3 minutes after the last switch operation (current consumption 75µA). This function doesn’t work at voltage measurements. To exit from the Sleep mode, set the Function switch to OFF position once, and re-set it to the Range at which a measurement to be conducted.
(2) Backlight turns off in 1 minute after it lights up.
Power source DC 12V / R6(AA)(1.5V) × 8
Dimensions 167(L)×186(W)×89(D)mm
Weight Approx. 965g (including batteries)
Possible number of Measurements 1200 times or more
(measure every 30 seconds at ×1/2 Range, lΔn=100mA)
Included Accessories 7128A (Test leads)
7129A (Test lead with alligator clip)
8017 (Extension prod) × 2
9121 (Shoulder strap)
9147 (Cord case)
Instruction manual, R6(AA) × 8

(*) Only the RCD type G (without trip out time-delay) can be tested at Auto Ramp Test,
type S (time-delay) cannot be tested


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