Product Details

1. Working Principle of High Voltage Test Transformer:

   1.1 AC, AC/DC High Voltage Test Transformer:

   GYSB10KVA/100KV High Voltage Test Transformer inputs the power frequency power supply into the operation box (or operation console), and adjusts the voltage through the auto voltage regulator to input to the primary winding of the test transformer.According to the principle of electromagnetic induction, power frequency high voltage can be obtained in the secondary (high voltage) winding. This power frequency high voltage can be rectified by high-voltage silicon stack and filtered by capacitor to obtain DC high voltage, whose amplitude is 1.4 times the effective value of the power frequency high voltage. However, when using DC, the short-circuit rod should be pulled out; when using AC, insert the short-circuit rod.

   1.2 High Voltage Test Transformer with Taps:

   In order to simultaneously resolve the contradiction between high voltage and low current, and low voltage and high current, the high voltage winding is divided into two windings: one with larger current and the other with smaller current. Then the two windings are connected in series and led out separately. Schematic diagram of the principle.

   1.3 Cascade High Voltage Test Transformer:

   To obtain a higher voltage test transformer, the cascade method can also be used to achieve higher voltage. Figure 2 shows the principle wiring diagram of a three-stage cascade test transformer. The capacity and voltage relationship of the three transformers satisfies: P1=2P2=3P3, U(total)=1U+2U+3U.

GYSB10KVA/100KV High Voltage Test Transformer

2. Main Technical Indicators of High Voltage Test Transformer:

    >Rated Capacity: 1～300KVA

    >Rated Output Voltage per Unit:

    (AC) 50, 100, 150, 200, 300KV

    (DC) 70, 140, 210, 280KV

    >Rated Input Voltage: 200V, 400V

    >Transformation Ratio: 500/1, 1000/1, 1500/1, 2000/1, 3000/1

    >Transformation Ratio Error: ≤±1.5%

    >Impedance Voltage: ＜10%