Voltage Indicator UVN-90M-220 SZ IP KB ELEKTRO TREID UVN135

High voltage contact-non-contact indicator UVN-90M-220SZ IP KB is designed to check the presence or absence of voltage on overhead power lines and other AC electrical installations with a voltage of 220 kV and a frequency of 50 Hz. The UVN-90M-220SZ IP KB indicator is a primary electrical protective device that combines two methods of determining the presence or absence of voltage—contact and non-contact—within a single technology. This allows for the detection of dangerous voltage from the ground within the overhead line corridor without climbing the tower, as well as phase-by-phase voltage determination by touching live parts. The operating principle of the contact part of the indicator is based on converting electrical signals into light-sound signals. The operating principle of the non-contact part is based on inducing a potential difference between two electrodes placed in the electric field. The contact and non-contact parts of the indicator are built into the working part of the device. Bright pulsed indication of the contact and non-contact parts is carried out by two different colored LEDs: simultaneously red and blue for the contact part, and only blue for the non-contact part, accompanied by a powerful intermittent sound signal, which is relatively more frequent and intense during contact part operation and less frequent and intense during non-contact part operation. The light-sound indication elements of the indicator are located inside a shade, the design of which allows for the amplification of the light-sound signal through directional propagation. The non-contact part of the indicator possesses dynamic sensitivity; i.e., when approaching live parts, the indicator's activation in the form of single light-sound signals is possible at significant distances from the live parts, and as the distance decreases, the frequency of the light-sound signal pulses gradually increases, enabling step voltage determination. It also features two sensitivity levels: touching the metal part of the working part's tail with a hand (without a glove) leads to an increase in the sensitivity of the non-contact part. The indicator features self-testing capabilities for both the contact and non-contact parts. The number of rod sections is 2. Reliable operation of the indicator is achieved by using microchips and components from leading global manufacturers in the electrical circuit, as well as a CR-123 lithium power source with a voltage of 3V and a capacity of 1500 mAh. The low operating current—7 mA in the signaling mode of the contact and non-contact parts, and 1 mA in the signaling mode of the non-contact part—allows the indicator to be used without replacing the power element throughout its entire service life of 10 years. The working part of the indicator is made of ABS plastic, ensuring the normal functioning of electronic components throughout the entire service life. The insulating part is made of PVC or fiberglass, providing reliable insulation.