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Product — Triple frequency & multiple frequency test device — Multi frequency doubling test device
Product name：Multi frequency doubling test device
Executive standard：GB311-4，DL/T848.4
Other name：Multi frequency multiplication voltage generator, multi frequency multiplication induction withstand voltage test equipment
Component：The host of the multi frequency doubling tester and the optional voltage divider directly display the high voltage
| Purpose & brief description |
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● It is mainly used for inductive withstand voltage test of voltage transformers and transformers; ● Multiple frequency doubling output frequency: 50Hz, 100Hz, 150Hz, 200Hz ● Application: power product manufacturing companies, power operation departments, scientific research institutions and colleges and universities; ● Application products: high voltage products such as voltage transformer and power transformer; |
| Test purpose |
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● Conduct induced voltage withstand test for longitudinal insulation of transformer and voltage transformer; ● According to the national test standard, the induction test voltage of power transformer and voltage transformer is approximately 2-3 times the maximum working phase voltage; As we all know, the iron core of the transformer is nearly saturated under the rated frequency and rated voltage. If the test voltage greater than the rated voltage is applied at both ends of the winding of the tested transformer with power frequency power supply, the no-load excitation current will increase sharply to an impermissible degree. It can be seen from the relationship of induced potential that in order to apply the test voltage greater than the rated voltage, Without saturating the iron core, the method of increasing the power frequency can be adopted, and a power generator greater than frequency doubling must be used |
| Technical parameter |
|
● Working conditions Ambient temperature: - 10 ℃ ~ 50 ℃ ● Relative humidity: 30% ~ 90% ● Power supply: three-phase AC380V ± 10% or AC220 ± 10%, 50Hz ± 5Hz. If AC220 is used for power supply, the power will be halved ● Output frequency: 50/75/100/150/200 Hz ● Output voltage: 30 ~ 360V sine wave, waveform distortion rate < 3% ● Maximum output voltage: 360V ● Minimum voltage resolution: 0.01V ● Minimum current resolution: 0.001A ● Voltage and current accuracy: ±1% |
| Technical features |
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● Capacity rise prevention: with high impedance capacitive voltage divider, it can directly monitor the high voltage at the primary side and automatically complete the power test; ● Simple operation: pressurization can be divided into full-automatic pressurization and manual pressurization, and constant voltage output in the frequency range of 50Hz ~ 200Hz can be selected; ● Comprehensive protection: the device has perfect overvoltage and overcurrent protection functions, which can be set by the user; ● Fresh display: backlit large screen LCD screen is adopted, with clear display and simple and clear operation interface; ● Fast printing: the instrument is equipped with a micro high-speed thermal printer, which can quickly print the displayed content; ● Real time clock: it can record the measured date and time and display the current time on the LCD; ● Data storage: 92 groups of data can be stored and can be overwritten after full storage; ● Seismic performance: seismic design is adopted, and the instrument will not be damaged by bumps during long-distance transportation; ● The multi octave frequency induction voltage withstand test device is controlled by microcomputer and designed and manufactured in combination with advanced frequency conversion and high-speed sampling technology. It can realize the functions of automatic pressure rise, automatic timing after pressure rise to the set value and automatic pressure drop after timing. The operation is extremely simple; ● The instrument adopts backlit large screen LCD display, full Chinese operation interface, with real-time clock and micro printer; ● The instrument adopts integrated structure, light weight and easy to carry; |
Feidian electric energy provides more professional testing equipment and technical services for power transformer, transformer, switch, high-voltage cable, power capacitor, bushing, insulator, lightning arrester, motor and other manufacturers
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Shanghai Feidian Electric Co.,Ltd
Address：Lingang section of Shanghai Pilot Free Trade Zone
Tel：13761804576
Email：zhangzaihui@126.com
Web site：www.feidian.net.cn
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