44kVA 22kV Variable Frequency AC Resonance Test System

Product Introduction

The main purpose of this device's design and production is to test 10kV cables for AC withstand voltage. Because the reactors are set up as numerous independent units, they can be used for both low-voltage AC withstand voltage testing for cables like 10kV and high-voltage, low-current equipment testing. Because of its wide range of applications, it is the perfect withstand voltage testing apparatus for power installation, maintenance, and testing engineering units as well as high-voltage testing departments at the provincial, municipal, and county levels.
Reactors, an excitation transformer, a capacitive voltage divider, and a variable-frequency control power supply make up the device's main components.

Product Parameter (specification)

1. Variable Frequency Power Supply (1 unit)
Rated Power	3kW;
Input Voltage	Three-phase 380V or Single-phase 220V ±5% 50Hz
Output Voltage	Adjustable 0–400V
Output Frequency	30–300Hz
Adjustable in	0.1Hz increments
Frequency Unstability	≤0.02%
Output Current	0–7.5A
2. High-voltage reactors (two units total)
Rated operating voltage	22kV
Rated operating current	1A
Rated inductance	100H
Continuous operating time	5min
Temperature rise	<65K
Operating frequency	30~300Hz
3. Excitation transformer (one unit)
Rated capacity	3kVA
Input Voltage	400V
Output Voltage	1.5kV
Output Current	2A
4. Capacitive Divider (one unit)
Self-Capacitance	3500pF
Rated Voltage	30kV
Operating Frequency	30–300Hz
Uncertainty	1.5%
Rated Voltage	30kV 3500pF
5. Test Lead Set (one set)

Product feature and application

1. The device has protective features for overvoltage, overcurrent, zero-position start, and system detuning (flashover). The thresholds for overvoltage and overcurrent protection can be changed to suit the needs of the user. The flashover protection turns on during specimen flashover and logs the flashover voltage measurement for test analysis.

2. Because each unit is lightweight, on-site operation is made easier.

3. To improve testing efficiency, the gadget has three operating modes that users can choose according to site conditions.

Three operating modes are available: Auto-Tuning Manual Voltage Increase Mode, Fully Automatic Mode, and Manual Mode.

4. Remote data storage and printing is possible. Numerical identifiers are assigned to stored data to facilitate user recognition and retrieval.

5. The beginning frequency can be flexibly adjusted within the designated range during automatic frequency sweeping. It is possible to choose an upward or downward sweep direction. Users can easily identify resonant point detection by viewing the scan curve on the huge LCD screen.

6. Makes use of DSP platform technology, which makes the human-machine interface more user-friendly and permits the flexible addition or removal of features and improvements based on user needs.

Prodection details

It is well suited for withstand voltage testing of power equipment such generators, transformers, GIS, switches, and busbars, although it is mostly utilized for 10kV cable AC withstand voltage testing. Power installation, maintenance, and testing engineering divisions, as well as high-voltage testing agencies at the provincial, municipal, and county levels, can use it in the field.

Company Qualifications

FAQ

1)What are the core components of the MEXB-W44kVA/22kV AC Withstand Voltage Tester?

Answer: This tester primarily consists of a variable-frequency control power supply, an excitation transformer, two high-voltage reactors, a capacitive voltage divider, and a set of test leads. These components work together to perform AC withstand voltage testing.

2)What operating modes does the MEXB-W44kVA/22kV AC Withstand Voltage Tester offer?

Answer: The device features three operating modes: fully automatic mode, manual mode, and auto-tuning manual voltage-rising mode. Users can flexibly select modes based on on-site testing requirements to enhance testing efficiency.

3)What key safety requirements must be followed when using the MEXB-W44kVA/22kV AC Withstand Voltage Tester?

Answer: Core safety requirements include: Use only the product's dedicated, specification-compliant power cord; Ensure the equipment chassis grounding terminal is reliably grounded and verify proper grounding before connecting input/output terminals; Do not arbitrarily plug or unplug test leads when connected to live terminals; Do not operate the equipment without its cover plate or if it shows signs of damage; Avoid use in damp or explosive environments; Keep the equipment surface clean and dry; Operators must be qualified technicians, with a minimum of two personnel present.

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