Quick & easy mains socket polarity and earth testing
Red/Green LEDs show 28 fault conditions
Non-trip earth loop impedance test
Tough sculpted design for easy removal
In addition to detecting 28 socket wiring fault conditions and checking mains voltage levels, the EZ165 verifies the earth wiring by carrying out a non-trip earth loop test and indicating its value in 6 discrete ranges from less than 1.7Ω to 500Ω.
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.
The EZ165 is an Advanced Socket Tester as defined by the Health & Safety Executive as it indicates earth loop impedance. Advanced Socket Testers offer a simple solution to verifying socket earthing and are commonly used by engineers and technicians prior to servicing and installing mains powered electrical and gas appliances.
The EZ165 replaces the Martindale EZ150.
Specifications
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 – 500Ω
Earth loop threshold accuracy ± (10% + 0.3Ω) *
Voltage low indication <195V ± 5% Voltage high indication >270V ± 5%
Earth neutral voltage high indication >30V nominal
Open earth indication >500Ω ± 10%
Dimensions
65 x 80 x 59mm
Weight 93 g approx.
Temperature (Operating & Storage) -10°C to 40°C, at max. 60% RH
Altitude up to 2000m
Weight 93 g approx.
Pollution degree: 2
Weight 93 g approx.
Safety Conforms to BS EN 61010-1, CAT II 300V, Class II, double insulation
EMC Conforms to BS EN 61326-1
* Measurement accuracy can be affected by highly inductive or capacitive loads distributed on the supply.
Comparison
Indicate functional socket (EZ165 / EZ365 / EZ2500)
Detect line/neutral reversal (EZ165 / EZ365 / EZ2500)
Detect presence of earth (EZ165 / EZ365 / EZ2500)
Audible indication (EZ365)
Mains voltage check (EZ165 / EZ365 / EZ2500)
Earth loop impedance range (EZ165 / EZ365)
Earth loop impedance value (EZ2500)
Polarity swap touch test (EZ365)
30mA RCD trip check (EZ365)
Digital display (EZ2500)
