DRZ-211 Sweep Frequency Response Analyzer

Application:

FRA quantization process transformer internal winding parameters response changes in the different frequency domain, according to the value of the change magnitude, frequency response magnitude change, regional and response trends, to judge the transformer internal windings degree of change, in turn,can determine whether the transformer has been severely damaged, need to overhaul measurement.

Features:

◆Auto test the wire groups.Hardware cassette mechanism adopts DDS (from America), can correctly detect the breakdown: distortion, swell, shift, tilt, inter-turn short circuit deformation and contacting short circuit inter-phase. 

◆High-speed, dual channel, 16-bit A/D sampling (the wave from curve will change obviously if change the tapping switch during the field tests), use precision, high stability components, the same phase repeat test, measurement repetition rate >99.5%.

◆The device with two measurement system: linear scan and sectional scan.

◆In the process of testing, only the connecting bus of the transformer needs to be dismantled, and the transformer is not required to be suspended and disassembled.

Specification: 

Scanning mode

1. Linear scan measurement range: (1kHz) - (2MHz).

2. Sectional scan measurement range: (0.5kHz) - (1MHz)

             (0.5kHz) - (10kHz)

             (10kHz) - (100kHz)

             (100kHz) - (500kHz)

             (500kHz) - (1000kHz)

3.Amplitude measurement range: (-100dB)～(+20dB).

4. Amplitude measurement accuracy: ±1dB.

5.Scan frequency accuracy: 0.01%.

6.Signal input impedance: 1MΩ.

7.Signal output impedance: 50Ω.

8.Co-phase repetitive rate: 99.5%.

9.Instrument dimension: 300X340X120mm3.

10.Case dimension: 310X400X330mm3.

11.Weight: 10KG.