Description
GDRB-I Transformer Short Circuit and Impedance Tester is an
automatic instrument specially used for testing power
characteristic of big and small transformer. The measurement is
accurate even when the testing voltage and current waveform have
serious distortion or the tested transformer has very low power
factor. Single-phase power or three-phase power is adopted and
rated voltage is converted in low voltage test, which is suitable
for on-site use.
Features
**0***0 High definition LCD screen, to show multiple test
parameters.
Synchronously measure voltage, current, power, power frequency.
Automatically record test data, built-in UPS storage and storage
data for long time.
Built-in printer, to print data quickly.
High test accuracy, the test accuracy of current and voltage is
above 0.1%.
Strong anti-interference ability. With software digital filter and
hardware anti-interference mixed filter technology, to make the
test stability and anti-interference ability better than other
instruments.
Three independent voltage and current input channels. *6bit high AD
converter is adopted for measurement channel.
Transformer impedance value can be measured accurately even when
the voltage and current waveform have serious distortion or the
power factor is very low.
All testing channels are isolated and independent, and range can be
adjusted automatically.
The change of external PT/CT to all the input channels can be set
respectively. When input voltage is less than **0V and input
current is less than *0A, it can test directly.
Specifications
Measurement Items   Range  Â
Accuracy
Voltage   *****0V  Â
±0.1%
Current   0.***5A  Â
±0.1%
Frequency   ****5Hz  Â
±0.1%
Power factor   0.**5≤COSΦ≤1 ±0.2%
Short circuit impendence ****0%Â Â Â 0.1%
1 Insulation Parameters
Insulation resistance ≥**0MΩ(***0V)
Insulation strength ≥ ***0VAC/*0Hz/1min
Testing point: Between voltage/current input terminal and shell,
between current input terminal and shell, between power input and
shell.
2 Use and Storage Environment
Use Temperature: ***- *0ºC, humidity(RH): ****0%
Storage Temperature: ***- *5ºC, humidity(RH): ****5%
3 Dimension: **0***0***0(mm)
4 New weight: 4kg
5 Power supply: AC **0V
