GDRZ-903 Transformer SFRA Analyzer IEC60076-18
Product Description
GDRZ-903
Transformer SFRA Analyzer IEC60076-18
GDRZ-903 SFRA
Accessory box for GDRZ-903 SFRA
1. Introduction
1) GDRZ-903 Transformer SFRA uses frequency response analysis (FRA) or low-voltage short-circuit impedance method to measure the frequency response characteristics of transformer windings, in order to determine whether there is mechanical damage such as deformation, displacement, and looseness in the windings.
2) GDRZ-903 Transformer SFRA Analyzer can effectively evaluate the winding deformation problems caused by external forces such as short circuits and impacts during the transportation, installation, or operation of transformers, providing important basis for the safe operation and fault diagnosis of transformers.
3) GDRZ-903 SFRA can draw relevant curves, and its test results are intuitive and accurate. It is widely used in preventive testing and fault analysis of power systems, which helps to improve the reliability and stability of the power grid.
4) GDRZ-903 Transformer SFRA can also be used for generator rotor AC impedance test, transformer load and no load loss test.
2. Reference Standards for GDRZ-903 Transformer SFRA:
IEC 60076-18:2012: Power transformers - Part 18: Measurement of frequency response
IEC 60076-5-2006: Power transformers-Part5:Ability to withstand short-circuit
3. Technical Index
| 1 | Sweep Mode | Linear sweep,Section sweep |
| 2 | Linear sweep | 10HZ-1MHZ interval 0.5KHZ 2000 dots 100HZ-2MHZ interval 0.5KHZ 2000 dots 10HZ-1MHZ interval 0.25KHZ 4000 dots (PC available) 100KHZ-2MHZ interval 0.25KHZ 4000 dots (PC available) User define Frequency, interval,Scan Dots can be set (PC available) |
| 3 | Section sweep | 10HZ-100HZ interval 1HZ 90 dots 100HZ-1KHZ interval 5HZ 180 dots 1KHZ -10KHZ interval 50HZ 180 dots 10KHZ-100KHZ interval 0.2KHZ 450 dots 100KHZ –300KHZ interval 0.5KHZ 400 dots 300KHZ – 1000KHZ interval 1KHZ 700 dots |
| 4 | Test range | (-100dB)-(+20dB) |
| 5 | Test accuracy | (-80dB)-(+20dB) 0.5dB (-100dB)-(80dB)1.0dB |
| 6 | Frequency accuracy | < 0.01% |
| 7 | Signal input impedance | > 1M Ω |
| 8 | Signal output impedance | 50 Ω |
| 9 | Repeat test | 99.5% |
4. Parameters of Short-circuit impedance, Generator rotor AC impedance, Load and No-load
| 1 | AC impedance | 0-999.999Ω, 0.2%±2 digits |
| 2 | AC voltage | 0-600V,0.2%±2 digits |
| 3 | AC ampere | 0-120A, 0.2%±2 digits |
| 4 | Active power | cosφ>0.1 0.5%±2 digits cosφ<0.1 1.0%±2 digits Reactive power 0.2%±2 digits |
| 5 | Frequency | 45-65HZ,0.1% |
5. Main menu of GDRZ-903 SFRA
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Contact Person: Christine Gou
Whatsapp/Wechat: +86 15123029885
Mobile: +86 15123029885
E-mail: gold05@hy-industry.com