Voltage transformers (PT) are key equipment in power systems. Insulation defects, such as turn-to-turn and interlayer short circuits, support discharge, and core bolt floating discharge, can seriously affect the normal operation of equipment, and even lead to extremely dangerous explosion phenomena. Induced withstand voltage testing on PT can help staff identify problems in a timely manner, avoiding more serious consequences.
The induced withstand voltage test for transformers and instrument transformers is an important test to ensure product quality meets national standards. The longitudinal insulation induced withstand voltage test for transformer windings, including turn-to-turn, interlayer, section-to-section, and phase-to-phase, is a crucial item in transformer insulation testing. Longitudinal insulation testing requires the application of test voltage through a frequency multiplier power supply device for withstand voltage testing.
The ZSDF-10 Multi-frequency Induced Withstand Voltage Test Device is designed and manufactured to meet the above requirements. It has been proven by extensive user use to be simple to operate, reliable in performance, and well-suited to meet the needs of transformer and instrument transformer induced withstand voltage testing.
Electronic Multi-frequency Test Device, Multi-frequency Withstand Voltage Test Device, Multi-frequency Generator
1. This device adopts power electronics technology, with the core part using a variable frequency regulator.
2. Parameter presetting, protection settings, frequency selection, voltage regulation control, etc., all use digital control technology.
3. Built-in PC, 8-inch color LCD display, data storage up to 3200 groups.
4. Touch operation mode, equipped with a thermal printer for Chinese character printing.
5. Test frequencies of 50Hz, 100Hz, 150Hz, 200Hz can be preset (optional).
6. Touch adjustment of voltage enables multi-frequency test voltage output of this device.
7. Step size can be adjusted in real-time, with options of 1V, 2V, 5V, 10V.
8. Built-in LC filter circuit ensures the waveform distortion rate is within the specified range.
9. Built-in compensation inductor to compensate for the capacitive current of the tested equipment, improving the device's load capacity.
10. Abandons the traditional three-phase five-limb triple frequency generator principle.
11. Small size, light weight, easy to carry, and suitable for high power applications.
12. Not only generates triple frequency, but also can produce 1, 2, 3, 4 times frequency test voltage output.
13. Simple operation and wiring, significantly reducing the requirements for on-site test power supply capacity.
The difference between multi-frequency and triple-frequency will be surprisingly discovered through the following comparison.
1. Difference between multi-frequency and triple-frequency - Specifications
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
