CTG120 Carlo Gavazzi

CTG Core balance transformer Benefits High sensisitivity. Wide range. Easy installation. Description CTG is a family ofcore balance transformer. These devices detect the difference in the current flow on the lines running through the coil. They work on either single phase or three-phase mains. When the vectorial sum of the current flowing to the load and the one flowing on the NEUTRAL cable (if present) is different from0 (zero), a current on the CT secondary circuit is generated. The current difference is usually caused by a leak which may cause an hazard. The output signal can be used by a residual current monitoring device which will disconnect the monitored load or send an alarm signal. Applications CTGs are used for detecting current leaks, potentially hazardous, on electric loads. Typically on electric motors, pumps or devices installed in metallic structures. They are approved to be used in conjunction with Carlo Gavazzi DEA71 and DEB71 earth leakage monitoring relays. 21/12/2018 CTG DS ENG Carlo Gavazzi Controls S.p.A. 1CTG Structure A B C D Element Component Function A Terminals CT secondary, connection cables B Terminals screws CT secondary, tightening screws Monitored mains line Multi wire cable: C Monitored line - Single phase: Line + Neutral - Three Phase: L1, L2, L3 or L1, L2, L3 +N Important Note: Do not route earth wire through the CTG D Fixing flange Panel mount fixing flange (CTG035 also with DIN rail adapter) 21/12/2018 CTG DS ENG Carlo Gavazzi Controls S.p.A. 2