1. Features 
GDGS Transformer Tan Delta Tester is used to measure dissipation factor (PF) in heavy interference site such as power plants or power substations. It can also be used in laboratory for high accurate test.

GDGS Transformer Tan Delta Tester is whole in one designed: including precision digital bridge, power unit, reference capacitor (CN), step-up transformer and other electronic circuits. It's also using frequency shift technology, FFT (Fast Fourier Transform algorithm) and digital filtering. When started, it's running automatically and then outputs the results on LCD display and prints the results automatically.

2. Specifications
 Accuracy: Cx ±(reading×1%+1pF) 
 PF ±(reading×1%+0.00040)
 Interference Ratio:     Interference current is no more than 2 times of the test current
 Capacitance Range:   Internal HV   3pF~60000pF / 10kV,60pF~1uF/0.5kV
 External HV   3pF~0.3uF/10kV
 Resolution   0.0001pF, 4 digital
 PF Range:         No limit, Resolution 0.001%, C/L/R specimen test
 Input current range: 10μA~1A
 Internal HV:        0.5~10kV / 200mA (max)
 HV Adjust:      Rise or fall smoothly 
 HV Accuracy:   ±(reading×1%+10V) Resolving 1V
 Frequency select: 60Hz single point, locked
 55Hz/65Hz double point, locked
 Test Time:        40S typical 
 Power Supply:     180V~270V 50Hz/60Hz auto
 Operating Temperature:  0°C~60°C
 storage Temperature:    -20°C~60°C
 Humidity: <90%