System for measuring the frequency response of transformer windings

摘要

The system for measuring the frequency response of transformer circuits, comprising power, signal generator and two measuring channels, each consisting of an impedance combined with a system for measuring voltage drop and grounding, is characterised by this, that it has an additional third measurement channel (2) consisting of the impedance (R) and the system for measuring the voltage drop (Uwy2),of which the outlet allows a connection by a concentric line (6) to a flow isolator leading to the start of the lower voltage adjustment of the transformer phase tested (5). The output of the first measurement channel (3) allows the connection by a concentric line (6) with a flow isolator leading to the start of the uptake voltage of the test phase, and the exit of the second measurement channel (4) allows the connection by a concentric line (6) with a flow isolator leading to the end of the same loop. Output of the signal generator (1) allows the connection by a concentric cable (6) to the prz insulatoran exhaust system leading to the uptake of the test phase. Method of measuring the frequency response of the transformer oscillations by signalling to the throttle isolator leading to the start of the upper voltage oscillation of the test phasethe recording of this signal by the first measurement channel, the recording of the upper voltage adjustment response on the flow isolator leading to the end of this second measurement channel, is characterised by the simultaneous connection of three measurement channels to the transformer flow isolators, each comprising an impedance coupled with a system for measuring the drop in voltage, with two measuring channels connected to the exhaust isolators leading to the beginning and end of the tested upper voltage side of the transformer phase,and the third channel is connected to the exhaust isolator leading to the start of the lower voltage adjustment of the test phase.