Martindale EZ365 Socket, Earth Loop and RCD Tester, Yellow, 65 x 80 x 59 mm

t, Earth Loop and RCD Tester is capable of detecting 28 socket wiring fault conditions and checking mains voltage levels, It verifies the earth wiring by carrying out a non-trip earth loop test and indicating its value in 6 discrete ranges from less than 1.7 to 500ohm. A low earth resistance is essential for safety disconnection devices to work properly and prevent electrocution when faults occur. In contrast basic socket testers only indicate the presence of an earth and will do so even when resistance values are dangerously high. Socket polarity and earth wiring faults are identified by a combination of red LEDs. The 3 LEDs correspond to neutral, earth and live connections to aid fast identification of the source of common faults. A look up chart on the tester provides further fault diagnosis. It also has the capability to check for L-NE polarity swap at the incoming supply and can be used to trip test 30mA RCDs. The polarity swap test detects a serious fault condition that cannot be identified by normal socket testers and is easily activated by using the touch pad on the EZ365. Nominal operating voltage: 230V AC rms, Operating frequency: 50Hz, Power consumption: <2.5W, Power: from mains socket under test, Non-trip earth loop impedance ranges: 0 – 1.7 – 5 – 10 – 100 – 200 – 500O, Earth loop threshold accuracy: ± (10% + 0.3O) *, Voltage low indication: <195V ± 5%, Voltage high indication: >270V ± 5%, Earth neutral voltage high indication: >30V nominal, Open earth indication: >500O ± 10%, RCD test current at 195V: 30mA, Duration of RCD test current: 300ms.