Cable Resonance Withstand Voltage System

Small size with light weight
Reactor uses epoxy cast, suit for all kinds of cables
Support multiple test modes
Precisely lock the resonance frequency
Product description: This system is mainly used for AC voltage withstand test of cable, substation, hydro-generator, main transformer, bus bar, GIS, etc.,
INQUIRY

The complete set of frequency conversion series resonance test equipment is mainly composed of frequency conversion control power supply, excitation transformer, reactor, capacitor voltage divider and compensation capacitor (optional).

1. The entire group of equipment has protection functions such as overvoltage, overcurrent, zero-position start, system detuning (flashover), etc. The overvoltage and overcurrent protection value can be set according to user needs, and the flashover protection action of the tested item flashover occurs. , to protect the tested items.
2. The weight of the whole device is very light, which is convenient for on-site use.
3. This system has three working modes, which are convenient for users to choose flexibly according to the site conditions and improve the test speed. The working modes are: automatic mode, manual mode, automatic tuning and manual boost mode.
4. It can store and print data in different places. The stored data number is a number, which is convenient for users to identify and find.
5. When the equipment automatically sweeps the frequency, the starting point of the frequency can be arbitrarily set within the specified range, and the large LCD screen displays the scanning curve, which is convenient for users to intuitively understand whether the resonance point is found.

6. The DSP platform technology is adopted, which can easily increase or decrease functions and upgrades according to user needs, and also makes the man-machine exchange interface more user-friendly.

Main Technical Parameters and Functions of the Device

Rated capacity	324kVA
The input pow	Three-phase 380V voltage, frequenc
Rated voltage	54kV
Rated current	6A
Working frequency	30-300Hz
Device output waveform	Sine wave
Waveform distortion rate	Output voltage waveform distortion rate ≤1%
Working time	Continuous 60 min is allowed underrated load; Overvoltage 1.1 times 1 min
Temperature rise	Temperature rise ≤65K after continuous operation underrated load for 60 min
The quality factor	Device Q≥30(f=45Hz)
Protection function	Over current, over voltage and flashover protection (see frequency conversion power supply for detail）
Accuracy of measurement	System RMS level 1.5

Excitation Transformer Specification

Rated capacity	9kVA
The input voltage	0-400v, single phase
The output voltage	3kV
Structure	dry type
Weight	About 50 kg

Variable Frequency Power Supply

Rated output capacity	18kW
Working power supply	380±10%V (three-phase), power frequent
The output voltage	0-400v, single phase
Rated input current	45A
Rated output current	45A
Voltage resolution	0.01kV
Accuracy of voltage measurement	1.5%
Frequency range	30-300Hz
Frequency regulation resolution	≤0.1Hz
Frequency stability	0.1%
Running time	Continuous 60 min at rated ca
Noise level	≤50dB
Weight	About 21 kg

High voltage reactor

Rated capacity	54kVA
Rated voltage	27kV
Rated current	2A
Inductance	68H per unit length
The quality factor	Q≥30(f=45Hz)
Structure	dry type
Weight	About 75 kg

Capacitive Voltage Divider

Rated voltage	60kV
High voltage capacity	2500pF
Dielectric loss	tgσ≤0.5%
Voltage division ratio	1000：1
Measuring accuracy	Valid value of 1.5
Weight	About 10 kg

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