This series of transformers utilizes advanced production equipment and adopts a new process of coil winding epoxy vacuum casting and CD type iron core. Compared with similar oil immersed transformers, it significantly reduces weight and volume, improves insulation strength and moisture resistance in terms of quality, and effectively weakens leakage magnetic flux and greatly strengthens it. Dry type high-voltage test transformer: outputs AC and DC high voltage, providing high voltage for various high-voltage tests. Used for on-site testing of insulation performance of various electrical equipment

1. 320X240 LCD display, high-speed thermal printer.
2. 4-channel measurement method for high voltage, high voltage current, low voltage, and low voltage current, with high-precision sensors and high-performance 14 bit AD acquisition chip.
3. Human computer dialogue keyboard operation mode, intelligent working process, optional automatic mode and manual mode.
4. Real time display of low voltage, low voltage current, low voltage voltage, low voltage current, time and withstand voltage results, with intuitive and clear display.
5. Complete overvoltage and overcurrent protection, with the ability to set output voltage, high voltage current upper limit, low voltage current upper limit, and timing time.
6. It has a zero return detection function, and the test can only be conducted after the zero return is confirmed, which is safe and reliable.
7. During automatic testing, it is possible to pause the voltage rise or fall at multiple points, making it easier to observe the condition of the test sample during the test.
8. It has insulation resistance testing function, which directly reflects the insulation strength of the tested object.
9. Approximate voltage regulation algorithm. After reaching the set voltage, the automatic voltage endurance timer will automatically reduce the voltage to zero after the timer ends.
10. When the set high or low voltage current is exceeded, the voltage output will be automatically cut off, the voltage will drop back to zero, and an audible and visual alarm will occur.

Console
Rated capacity			1.5 〜100kVA
Rated output current			7.5〜232.5A
Rated output voltage			0〜430V
Input power supply			Three phase AC 380V ± 10% (single-phase AC 220V ± 10%);  50Hz±5Hz
Input current			7.5 〜250A
Timing length			0~9999S (special mode can be used for long-term work)
Voltage accuracy			≤1.O%±One word(F.S)
Current accuracy			≤1.0%±One word(F.S)
explain			If there are special parameter requirements, design and production can be carried out according to the user's technical parameters。
SF6 gas filled test transformer
Specification and model	capacity (KVA)	input voltage (V)	Output voltage(KV)	Output current(Ma)	Output DC high voltage(KV)	Maximum external dimensions(mm)	weight(kg)
GTB-1. 5/50	1. 5	200 (400)	50	30	70	230X180X370	13«
GTB-3/50	3			60		310X250X570	3。
GTB-5/50	5-			12Q		300X310X680	35
GTB-10/50	10			200		320X350X720	45
GTB-20/50	20			400		360X350X720	85
GTB-30/50	30			600		500X380X780	120
GTB-5/100	5		100	50	140	320X350X960	65
GTB-10/100	10			100		360X350X960	80
GTB-15/100	15			150		360X350X900	110