Multi magnetic circuit transformer is a new type of low-voltage and high current generator. It is used in many detection institutions in China for short-circuit heating test, action characteristic correction, dynamic thermal stability, continuous load test and electrical parameter measurement test of large, medium and small low-voltage electrical appliances such as current transformer, circuit breaker, contactor, thermal relay and switch. Single phase test can be carried out with one multi magnetic circuit transformer, and three-phase test can be carried out with three sets of the same equipment. The test system needs large capacity voltage regulator for stepless voltage regulation.

Features:

1. Low impedance and high output. Small capacity voltage regulator can realize all regulation within large capacity range, especially suitable for high current working system

2. The voltage regulator equivalent to 1 / 6 of the capacity of the conventional regulation system can obtain the same regulation effect, and greatly improve the stability of the current regulation process.

3. Since the regulating magnetic circuit only supplies 1 / 6 of the output, the nonlinear characteristics of the voltage regulator have no effect on the distortion of the output current waveform, which can meet the requirements of the basic low voltage test method.

4. Because it is a 1: n voltage regulation scheme, the equipment has high efficiency and low loss after being put into the power grid.

5. The supporting equipment is simple and easy to adjust and control.

Technical parameter(300kVA as an example)

Model: tddgw-300kva (customized on demand)

Input voltage: 415V

Output voltage: 24V

Input current: 25kA within 1s

Magnetic circuit number composition: B1 + B2 + B3 + B4

Magnetic circuit voltage composition: 8 + 4 + 4 + 8V (the voltage can be increased or decreased arbitrarily according to the needs of the tested product)

Magnetic circuit capacity composition: 100kVA + 50KVA + 50KVA + 100kVA = 300kVA

Insulation class: Class F

Cooling mode: air self cooling

Withstand voltage level: 5kV

Overall dimension: 3700 * 500 * 900mm

Weight: 1.8 tons

Working principle of multi magnetic circuit transformer

Each magnetic circuit is controlled independently, and the open circuit load of the magnetic circuit is switched in turn according to the current required by the measured product; When magnetic B1 is put into open circuit, the transformer output is 8V. If the voltage and current are not enough, continue to put magnetic circuit B2 into operation, and the output voltage is 12V - and so on.

Specifically, the control cabinet (set) shall be configured according to the whole set.

If you need to further understand the use method, performance and technical problems of this product, please call, and our engineers will explain the use method and operation mode in detail.

Voltage and capacity can be combined arbitrarily as required, with EI and UI double column structure.

Because this type of transformer is a special transformer, you are welcome to call. Our technology will design a transformer to meet the user's needs and guide its use.

Product quality assurance and service guarantee of the company:

 Before leaving the factory, each product is fully inspected in strict accordance with the national standard to ensure that the factory pass rate is 100%, and all products are guaranteed for one year（ (except for special customer requirements)