Transformer integrated online monitoring system
Partial discharge online monitoring
The minimum measurable discharge capacity is 500PC, and the measurement frequency band is 40k～3MHz.
The time resolution of the discharge pulse is 10μs; the phase resolution is 0.18°.
The measurement system can monitor the transformer discharge amplitude, phase, frequency and other parameters; can display power frequency periodic discharge diagram, two-dimensional (q-φ, N-φ, Nq) and three-dimensional (Nq-φ) discharge spectrogram; and provide Discharge trend chart, set alarm, perform historical query and print reports and other functions.
Online monitoring of gas components in oil
The combined value of the main characteristic gases hydrogen, carbon monoxide, acetylene and ethylene can be detected.
On-line monitoring of casing dielectric loss and capacitance
Dielectric loss factor: 0.2～0.002; Error: ±(1% reading + 0.001).
Electric capacity: 50pF～2μF; Error: ±(1% reading + 5pF).
Iron core ground current online monitoring
Measuring range: 5mA～10A; error range: 1%±1mA.
The waveform can be analyzed in time domain and frequency domain, and the development trend graph can be displayed.