INPUT Connection: insulation transformer Iso TV (NT699) Network voltage: 230V Rated frequency: 50Hz Working frequency: 47...63Hz Insulation measuring circuit current: ≤ 100µA External VT temperature: Pt100 2-wire resistance bulb Current: connection by CT/5A Rated burden input current: ≤ 0,5VA Input impedance: > 100kΩ Measuring voltage: < 15V   DISPLAY Display type: LCD Digit height: 5mm (2 lines x 8 digit) Measurement display2 : subdivided on 7 pages resistance or impedance towards ground + insulation TV temperature resistance towards ground1+ capacity towards ground1 voltage + frequency current active power + apparent power apparent power demand + apparent power max. demand phase with lowest impedance towards ground + presence of remote repeaters 1 present just if you select the impedance towards ground display 2 measurements referred to the secondary winding of the external insulation VT   ALARMS DISPLAYS Insulation pre-alarm: blinking yellow LED Insulation alarm: On yellow LED Temperature and / or power pre-alarm: blinking yellow LED Temperature and / or power alarm: On yellow LED   ANOMALIES DISPLAYS no measuring voltage connection breakdown to the equipotential junction