HVHIPOT AC Resonance Test System Variable frequency (GDTF-400/400)

• Customization: Available
• After-sales Service: YES
• Warranty: 1
• Model NO.: GDTF-400/400
• Model number: GDTF-400/400
• Power: electric
• Usage: power test equipment
• Output voltage: 400kV
• Capacity: 400kVA
• Delivery time: 30-45 days
• Transport Package: Wooden Case
• Specification: ISO, SGS
• Trademark: HV Hipot
• Origin: Wuhan China
• HS Code: 9030339000
• Production Capacity: 1000 Sets/Year

Product Description

Product Description

GDTF-400/400 is specially designed for AC withstand voltage test for 220kV or below switch, GIS, instrument transformers and neutral point of main transformers. 
The system includes Variable frequency power supply, exciting transformer, reactor and capacitive voltage divider, compensation capacitor.


Features

1. With the protection function of over-voltage, over-current, zero-start, system detune (flashover). Over-voltage, over-current protection value can be set accordingly to user's need. Flashover protection starts when flashover and the flashover voltage value will be recorded for testing analysis.

2.The unit piece of the device is light, suitable for field use.

3.There are three kinds of working mode for user choosing according to on-site condition.
Automatic mode, Manual mode, Automatic tuning manual boosting mode.

4. Data can be stored, and the stored data No. are figures which is easy for identification and searching.

5. Frequency starting point can be set in the specified scope when the device sweep frequency automatically, sweep frequency direction can be selected upward or downward, meanwhile LCD displays the scanning curve, which is convenient to know if the resonant point found or not intuitively.

6. With DSP technology, which can increase or decrease functions and updated accordingly to the user's need, it also makes the human-machine interface more friendly.


Specifications

GDTF - means manufacturer's code.
400kVA means the maximum rated capacity of the equipment, the unit is kVA
400kV means the output voltage of the equipment, the unit is kV.
 

The rated voltage	200kV-- meets AC withstand voltage testing of 220kV main transformers. Working frequency is 45-65Hz, testing voltage≤160kV, testing time is 1min. 400kV-meets AC withstand voltage testing of 220kV or below circuit breakers, GIS and instrument transformers. Working frequency is 30-300Hz, testing voltage≤395kV, testing time is 1min.
Output voltage waveform distortion rate	<1.0%
Allowing continuous working time	One time 60s at rated value.
Quality factor of the equipment	Q>50
Quality factor of GIS, circuit breakers in full load test	Q > 20 (Related with load)
Input power supply	Single phase 240V or three phase 415V
Frequency adjusting range	30-300Hz
System measurement accuracy	1.5%
Over-voltage, over-current, zero-start protection