TQSB-5KVA/50KV Test Transformer
Yangzhou Darui
TQSB-5KVA/50KV Test Transformer Introduction
Brief Introduction
I. Product Overview TQSB-5KVA/50KV Test Transformer is a product produced after improvement based on the similar product YDJ (G) high-voltage test transformer, in accordance with the test transformer standard ZBK41006—89. This series of products has the characteristics of small size, light weight, compact structure, complete functions, and convenient use. It is suitable for power, industrial and mining, scientific research and other departments, for power frequency withstand voltage test and DC leakage test on various high-voltage electrical equipment, electrical components, and insulating materials. It is an indispensable instrument in high-voltage testing.
Detailed Introduction of Test Transformer
I. Product Overview
TQSB-5KVA/50KV Test Transformer is a high-voltage testing equipment. This series of products adopts a single-frame core-type iron core structure, with the primary winding and high-voltage winding coaxially wound on the iron core, thereby reducing leakage flux and increasing coupling between windings. The overall structure is compact, with strong universality, and is easy to use and carry. It is suitable for power systems and power users to test the insulation performance of various high-voltage electrical equipment on site, and is an essential test instrument for power equipment testing and preventive tests.
TQSB-5KVA/50KV Test Transformer can be used for AC power frequency withstand voltage test. If equipped with capacitors, silicon stacks, and high-voltage DC microammeters of the same voltage level and capacity, it can be assembled into a DC high-voltage test device to measure high-voltage DC leakage current.
II. Model Meaning
III. Schematic Diagram
IV. Technical Requirements
1. Environmental requirements for the test transformer:
1.1 Input voltage: AC 220V or 380V, 50Hz;
1.2 Ambient temperature: -40℃～40℃;
1.3 Relative humidity: ≤85% (at ambient temperature of 25℃);
1.4 In an environment free from chemical gases and vapors;
1.5 In an environment without explosive hazardous gases;
1.6 In a place not subject to rain immersion.
Note: 1. Our factory's TQSB series test transformers can be made as a single unit up to AC 300kV, capacity 300kVA;
2. If the user needs, the TQSB series test transformers produced by our factory can have a 200V cascade tap extracted, and two or three units can be cascaded to form AC 100kV, 150kV, 200kV, 300kV high voltage. According to user needs, a 5-15kV medium voltage tap can also be extracted from the high-voltage winding for AC withstand voltage testing of high-voltage motors;
3. The "DC high voltage output" column in the table is the DC high voltage output value of the AC/DC dual-purpose test transformer;
4. Our factory can also customize various special specifications of test transformers according to user requirements.
V. Operation Steps
1. Connect the leads according to the wiring schematic diagram, and reliably ground the transformer and control box;
2. Before the test, check whether the connections at each part are in good contact, and check whether the voltage regulator of the control box is adjusted to the "zero" position;
3. Connect the power supply, the green indicator light is on, press the start button, the red indicator light is on, indicating that the transformer is energized, waiting for voltage increase;
