Transformer Demagnetizer DEM60R
Three-Phase Transformer Demagnetizer
The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization.
Transformer Demagnetizer DEM60R
Three-Phase Transformer Demagnetizer
The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization.
Description
Three-Phase Transformer Demagnetizer
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use a demagnetizer on the power or instrument transformer.
The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with a magnitude decreasing to zero. DEM60R provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.
Key Features
- Fully automatic demagnetization
- Calculation of remanent magnetism
- Demagnetization currents 5 mA – 60 A DC
- Demagnetization progress graph
- Automatic discharging circuit
- Lightweight – 13.1 kg / 28.8 lbs
Datasheet:
Description
Three-Phase Transformer Demagnetizer
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use a demagnetizer on the power or instrument transformer.
The DEM60R demagnetizer is a fully automatic test instrument that performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with a magnitude decreasing to zero. DEM60R provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.
Key Features
- Fully automatic demagnetization
- Calculation of remanent magnetism
- Demagnetization currents 5 mA – 60 A DC
- Demagnetization progress graph
- Automatic discharging circuit
- Lightweight – 13.1 kg / 28.8 lbs
