ALH-0.66 III series current transformers have novel design, advanced compensation method, excellent process technology, safe and reliable performance, small and aesthetic appearance, as well as complete varieties. They are normally used for control, protection and measurement.
ALH-0.66 III Series APT Transformer
The enclosure is made of high-strength PC material with totally-enclosed structure. It is mainly used where the three-phase bus bar is arranged vertically and it is installed mainly by fixing bus bar.
The capacity of transformer is increased and its precision is greatly improved, so that it can meet the higher requirements for the high impedance load and electric energy measurement.
Internal iron core adopts high-quality silicon steel sheet;
In conformance with GB0840.2-2014;
Pass the National Metrology Accreditation;
Secondary current is divided into 5A and 1A;
|Rated working voltage (Un)|
|Rated continuous thermal current (Icth)|
1.2 x Ipn
|Rated short thermal current (Ith)|
60x Ipn (1sec.)
|Power frequency withstand voltage|
3kV (1min, 50Hz; between the enclosure and secondary terminal)
|Type of wiring terminal|
screw pressing sheet fastening type (thread is M4)
tightening torque 0.8～1.2N.m, max. bearing torque 2.4N.m;
IP00 for terminal and IP40 for enclosure;
|Altitude of installation place|