LV tester type ZNF-01 is designed to check the presence of voltage in the range from 12 V to 400 V AC and DC. For AC voltages, a frequency of up to 60 Hz applies.
The measured voltage is signaled by red LEDs in the ranges 12, 24, 50, 120, 230 and 400 V.
The 12 V AC / DC voltage is signaled by a pair of LEDs, which are marked + and -, they also serve to determine the polarity of the measured voltage. When the LED marked “+” is lit, there is a positive voltage on the fixed tip (when “-” – a negative voltage). If both are lit, the voltage is alternating. From the range of 120 V AC / DC, the indication is also accompanied by an acoustic signal.
It also allows the determination of the phase conductor and the determination of the phase sequence.
The tester may be used in installations with the specified nominal voltages, in the range of operating temperatures -10 to 55 ° C and relative humidity 20 to 96%. IP40 protection. Voltage indication tolerance is within ± 15%.