Automated Short Time Thermal High Current Test Equipment AC380V
45Hz - 65Hz
1 Summary
Automated short-time thermal test set can be applied to conduct
high thermal current test for CT, circuit breaker and other primary
equipment of power system.
2 Product Characteristics
The Product has following obvious advantages as compared with
existing short-time thermal testers:
1 As compared with the test system in LCR charging and discharging
mode, volume and weight of the Device, as well as cost, have been
reduced significantly.
2 The device measures impedance of primary sample circuit, and
automatically controls its output current to target current based
on measurements.
3 When the required test output capacity exceed maximum output of
the device, I2t equivalent test method is applied automatically to
make the test feasible.
4 The test is fully automated, the control circuit of device
monitors all signals of test circuit such as primary current,
primary voltage, voltage and current of internal variable
transformer and system line voltage.
5 The test process is simple and quick, and values and time curves
of various signals during test, including electricity of sample
primary circuit, voltage of primary circuit and output voltage of
device voltage variable transformer are recorded and stored.
3 Functions
1 Measure impedance of primary sample circuit of connected current
transformer, adjust variable transformer of device to target value
based on measured impedance value, then generate required target
test current in the output circuit of heat flow device.
2 Record amplitude-time curves during test, including current of
sample primary circuit, voltage of primary circuit and output
voltage and output current of device variable transformer.
3 Automatically control and monitor the overall test process, and
protect abnormalities and wrong operations during testing.
4 Generate the well-formed test report.
4 Technical Indicators
1 Maximum output current: 0~25000A (greater output current is
customizable), output current error is less than 10% of set value
2 Output capacity: 250KVA (Customizable)
3 Current of sample primary circuit: 0~25000A, with measurement
error of 0.1%FS
4 Voltage of primary sample circuit: 0~10V, with measurement error
of 0.1%FS
5 Voltage and current waveform sampling rate during test: 25 KHz,
with time measurement error of 0.04ms
7 Power supply: AC380V 45Hz~65Hz
8 Operating temperature: 0~50 degrees, hsumidity is less than 90%
Control Box of CT Short-Time Thermal Current Tester
High Current Booster
