Analogue Frequency meter, 240° scale, 144x144
• rated burden 1W, 2 VA @500V
• input range 57,7÷440V ±15%
• accuracy 0,5%
• temperature stability ±50ppm/°C
• overvoltage category CAT III, 600V P.D. 2
• operating temperature -25 +50 °C
• storage temperature -40 +80 °C
• protection for housing IP52
• protection for terminals IP00
• immunity level 4, performance A
• manufactured according to CEI-DIN-VDE-IEC
61000-4-4; 61000