Transformer Winding Deformation Wiring Diagram - Measurement Method

Several common detection wiring modes of transformer:The transformer winding deformation tester is mainly composed of main measuring unit and notebook computer, parallel three special measuring cables, measuring clips and grounding wires.

The main measuring unit system and the test object are connected by 50W high-frequency coaxial cable. The frequency sweeping signal is injected into the test object through the signal clip (yellow) through the connecting cable through the output port (excitation output); The signal is obtained from the test object by the signal measuring clip (green) and transmitted to the (response input) via cable; The synchronous reference signal is obtained from the injection point of the tested object by signal measurement and transmitted to the input (reference input) through cable. The shell of the tested object and the shielding layer of the test cable must be reliably connected and grounded. Large transformers generally use the connection point between the outgoing line of the iron core grounding sleeve and the oil tank as the public grounding point, and the shell point of the transformer is grounded.

Three phase yn shaped measuring wiring1. The Yellow clamp (input) is clamped on the o point of the transformer, the green clamp (measurement) is clamped on the a phase of the transformer, and the measurement of representative and three-phase yn type a phase.2. The Yellow clamp (input) is clamped on the o point of the transformer, the green clamp (measurement) is clamped on the B of the transformer, and represents the measurement of three-phase yn type B.

3. The clamp (input) is clamped on the o point of the transformer, the green clamp (measurement) is clamped on the C of the transformer, and represents the measurement of three-phase yn type C.Three phase Y-shaped measuring wiring1. The Yellow clamp (input) is clamped on phase a of the transformer, the green clamp (measurement) is clamped on phase B of the transformer, and represents the measurement of three-phase Y-type ab.

2. The color clamp (input) is clamped on phase B of the transformer, the green clamp (measurement) is clamped on phase C of the transformer, and represents the measurement of three-phase Y-type BC.3. The Yellow clamp (input) is clamped on phase C of the transformer, the green clamp (measurement) is clamped on phase a of the transformer, and represents the measurement of three-phase Y-type ca.Three phase delta measuring wiring

1. The Yellow clamp (input) is clamped on phase a of the transformer, the green clamp (measurement) is clamped on phase B of the transformer, and represents the measurement of three-phase type ab.2. The Yellow clamp (input) is clamped on phase B of the transformer, the green clamp (measurement) is clamped on phase C of the transformer, and represents the measurement of three-phase BC.3. The Yellow clamp (input) is clamped on phase C of the transformer, the green clamp (measurement) is clamped on phase a of the transformer, and represents the measurement of three-phase ca.

Single phase x, y, Z measuring wiring1. The Yellow clamp (input) is clamped on the X point of the transformer, the green clamp (measurement) is clamped on the a of the transformer, and represents the measurement of single-phase x, y and Z ax.2. The Yellow clamp (input) is clamped on the Y-point of the transformer, the green clamp (measurement) is clamped on the B-point of the transformer, and represents the measurement of single-phase x, y and Z-type by.

3. The Yellow clamp (input) is clamped on the Z point of the transformer, the green clamp (measurement) is clamped on the C of the transformer, and represents the measurement of single-phase x, y and Z CZ.matters needing attention:The instrument shall be preheated for 15 minutes before measurement. If the temperature is low in winter, the preheating time shall be appropriately extended to ensure the normal measurement of the instrument.

Pay attention to the grounding wire in strict accordance with the schematic diagram. In particular, the grounding clip of the response signal shall be connected with the grounding clip of the excitation signal through the connecting wire, and then the grounding wire of the excitation signal shall be grounded with the iron core to ensure the correct flow direction of the signal current.Author: Dingsheng power www.kv-kva.com reprint please indicate