Transformer TOPA-0.66 is used for measurements. It allows you to obtain data on the electrical signal passing through the network using standard measuring equipment. Such measurements are usually carried out at electric power facilities integrated into the operation of public utilities, agricultural and industrial enterprises. Such facilities use alternating current installations, from which readings must be taken to ensure correct and safe operation. Such transformers are manufactured in accordance with the placement category 3 (DSTU 15150-69). Climatic version "U". Designed for operation in any position. In order to be able to take current characteristics in a large dynamic linear range, a nanocrystalline alloy is used as a material for creating the measuring winding of the transformer.
Current transformer TOPA-0,66
Survey letter Contact a specialist
Verification interval 16 years
Type examination certificate (module B) No. UA.TR.001 103-18 Rev 1. Reference number 29/3/B/12/114-20. DSTU EN 61869-2:2017, TU U 31.1-34562687-001:2007 Industrial design patent No. 17817.
Technical characteristics
| Parameter name | Parameter value |
|---|---|
| Rated voltage, kV | 0.72 |
| Rated primary current, A | 20, 30, 50, 75, 100, 150, 200, 250, 300, 400, 500, 600, 800, 1000 |
| Rated primary current, A | 5 |
| Rated frequency, Hz | 50 |
| Accuracy class not more than | 0.5S |
| Rated safety factor of FS devices, not more than | 3 |
| Rated secondary load at cos φ = 0.8, VxA | 5 |
| Rated insulation level, kV | 3 |
The transformer in operation is subject to periodic verification according to the methodology of DSTU 6097: 2009 at least once every sixteen years. The design of the transformer allows it to be mounted on a DIN rail using the supports included in the delivery. Wires with a cross-section of up to 6 mm2 can be connected to the secondary winding contacts S1, S2 and contact U1. It is possible to connect the wires from one of the two sides of the housing, while access to the contacts on the opposite side is blocked by a cover. Each wire is clamped with two screws. Transformers can be supplied with vertical or horizontal busbar arrangement. The location of the busbar plane is specified at the time of ordering, as it is not possible to change the busbar location after the transformer is manufactured.