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Więcej informacjiConstruction CT1, CT4
0,2s; 0,2; 0,5s; 0,5; 1 - accuracy class
LV Current Transformers CT1, CT4 are designed for interior use. Made of well-knit and rigid case (1), which minimizes the gathering of damp and protect from adverse interference in construction.
These devices do not need maintenance and guarantee safe assembly of equipment. LV Current Transformers are placed directly on current circuit (busbar, cable). In addition, these devices have got compression screws (2), which enable disabling equipment on busbar or cable and mounting grip (3), useful for installing current transformers on mounting plates.
Construction CTN5
Current transformers type CTN5 are designed for expternal application. The secondery winding wound on the toroidal core is placed in a case. The case is filled with electro-insulating resin, with protects the device against damp and undesirable interference in the stucture. The connecting cable [3] (2x2,5mm2, 4 or 6m length) has a reinforced double insulation made of rubber with limited flammability and oil-resistance. The cable is led out of the case through the gland [2].The devices do not require maintenance and guarantee safe working conditions for installers.
Current transformers are installed directly on a current circuit or set on a transformer tank. The circuit passes through the opening of the device case and is its primary winding. Two threaded holes M5 [4] enable fixing the device in a fixed position. In addition, the transformers have special ribs [5] witch protect against the accumulation of water in the opening of the current transformer case when it is placed on a flat surface.
CTn5 transformers are made in E10, E11,E12,13 cases.
Basic parameters:
| Protection grade | IP20 |
| Operating voltage | 0,72kV |
| Test voltage | 3kV |
| Temperature operating conditions | -30oC;+60oC |
| Extended current range | 120% In |
| Rated short-time thermal current | Ith=60Ipp |
| Protection class | I |
| Rated dynamic current | Idyn=2,5Ith |
| Standards | PN-EN 61869-2 |
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