Huazheng HZXB-160KV HV Series Resonance Test Device User Manual

: June 12, 2024
: Huazheng

Table of Contents

Huazheng HZXB-160KV HV Series Resonance Test Device
Company Profile
Careful guarantee
Product Overview
HZXB-160KV/160KVA HV series resonance test device
VF power supply detailed introduction
Common troubleshooting
Related Data
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Huazheng HZXB-160KV HV Series Resonance Test Device

For Thanks

Dear customers, Thank you for using the Wuhan Friends Electric Co., Ltd. series resonant test device, we will uphold innovation, unity, efficiency, the integrity of purpose and dedication for you!

Company Profile

Our company is a set of development, development, production, operation of electrical testing equipment in one of the professional electrical company. Our main business is produce Series resonant test device、Adjust the inductance series resonant test device、No partial discharge induction voltage test equipment、Fully automatic intelligent CVT resonant booster、Electronic multi- frequency and air-core reactor and other test equipment. Company location in Guan Nan Yuan 4 Road No.2 East Lake New Technology Development Zone Wuhan. We have 15 years high voltage power test equipment series resonant test device of professional experience in production, Site power engineering commissioning test services and testing equipment rental services and other sets of business. High pressure test equipment production workshop covers an area more than 2500 m2. Vacuum drying oven, vacuum pouring cans, vacuum incubators, high / low pressure winding machine, such as a large number of professional manufacturing machinery and equipment. And also have a professional technology Research and development team，Clean and hygienic winding group, Large scale assembly group，Strict and meticulous quality inspection group， Dedicated dedication of the after-sales service and other professional team.These excellent team is the company’s production of product quality and quantity, rapid response to delivery, after-sale Thanksgiving service a strong guarantee.

The company’s contribution to the power industry

Since 2008，We keep not less than 25% growth rate for the each year, Among them Series resonant test device、Adjust the inductance series resonant test device、No PD test equipment、Fully automatic intelligent CVT resonant booster、Electronic multi-frequency and air-core reactor and other test equipment， Produce 400set./year, Market share of more than 3,000 sets. Is the largest domestic production capacity and sales of pressure-resistant power equipment manufacturers, Products sold to the twenty-six provinces, municipalities, autonomous regions and municipalities, exports to Southeast Asia, the Middle East, Africa and other countries and regions, has served more than 5,000 user units, and domestic and foreign customers recognized and acclaimed.

Dear customer

Thank you for purchasing the company’s Frequency conversion series resonant test device. Before you use this product for the first time, please read this instruction manual in detail.It will probably help you skillfully use this instrument.
Our aim is to continue to improve and perfect the company’s products. So you may have a little difference with the use of the product if there is any change，

Warning: Due to the input and output terminals, test column, etc. are likely to take the voltage，When you plug in the test line, power outlet, will produce electric spark. Carefully electric shock, avoid electric shock hazard, pay attention to personal safety！

Careful guarantee

The company’s products, in three months from the date of delivery, such as product defects, we can change for you.Defects such as products within a year, the implementation of free maintenance. One year or more defects,the implementation of paid lifelong maintenance.

Safety requirements

Please read the following safety precautions to avoid personal injury

Only qualified technical personnel to perform maintenance

To prevent fire or personal injury！

Use appropriate power lines： Can only use the product specific and in line with the product specifications of the power supply line
Correctly connect and disconnect： When the test lead and the live wire are connected, please do not connect or disconnect the test lead.
Product grounding： In addition to the products through the power line grounding conductor earthing, shell grounding column must be grounded. In order to prevent electric shock, grounding conductors must be connected to the ground. In connection with the input or output terminals of this product, the product is properly grounded.
Note the ratings of all terminals： In order to prevent fire or electric shock hazards, please note all the ratings of this product and mark. Before connecting to this product, please read the instruction manual for further information about the value of the rated value.
Do not operate in the absence of instrument cover： If the cover plate or the panel has been removed, do not operate this product.
Do not operate when there is a fault： If you find that the product is damaged, please check the company’s maintenance personnel, do not continue to operate.
Do not operate in wet conditions.

Product Overview

This device principal for 220KV/25000KVA Main transformer neutral point AC voltage withstand test. The reactor is designed to meet the requirements of low voltage AC voltage test, such as high voltage and low voltage, and it can meet the requirement of low voltage AC voltage test with 10kV cable.
The device is composed of a frequency conversion control power supply, an excitation transformer, a reactor, a capacitor voltage divider, and a compensating capacitor.

Application of series resonance in power system

The required power capacity is greatly reduced. Series resonant power supply is the use of the resonant reactor and the capacitor voltage to generate high voltage and high current. In the whole system, the power supply is only required to provide active power consumption of the system, therefore, the power required to test the power is only 1/Q.
The weight and volume of the device is greatly reduced. The series resonant power supply, not only saves large power heavy pressure adjusting device and ordinary power frequency test transformer and resonant excitation power supply only needs to test the capacity of 1/Q, which makes the system weight and volume greatly reduced, generally for ordinary test device 1/10.
Improve the output voltage waveform. The resonant power supply is a resonant filter circuit, can improve the output voltage waveform distortion, get a good sinusoidal waveform, effectively preventing the harmonic peak of the test sample of the false breakdown.
Prevention of large short-circuit current burn. In series resonant state, when the insulation of the test sample is breakdown, the circuit is immediately removed, and the loop current is rapidly decreased to the normal test current 1/Q. And parallel resonance or test transformer mode to do the test, the breakdown of the current rise in a few times, the difference between the short circuit current and the breakdown current of several hundred times. Therefore, the series resonance can effectively find the insulation weakness, and there is no big fault point of the fault of the short circuit.
Will not appear any recovery over voltage. When the product is broken down, the high voltage is lost immediately, the arc is extinguished immediately, and the recovery voltage is very long, and it is easy to break off the power supply.

The main functions and technical characteristics of the FM resonance device of our company

The device has the protection function such as over voltage, over current, zero position start, and the system is out of order. The protection value can be adjusted according to user’s need, and the flashover voltage of the test sample can be recorded.

The whole unit weight is light, easy to use in the field..
The device has three working modes, which is convenient for the user to choose according to the situation of the scene, and to improve the test speed. Work mode is: automatic mode, manual mode, automatic tuning manual boost mode.
Can store and remote print data, the data is stored in the digital, convenient to help users identify and find.
Device automatically sweep frequency when the starting point can be set in the specified range, sweep direction can be up and down, while the LCD screen display scan curve, easy to understand whether users can find the resonance point.
Using the DSP platform technology, it can be convenient for the user to increase or decrease the function and upgrade, but also makes the man-machine exchange interface more humane.

HZXB-160KV/160KVA HV series resonance test device

HZXB-the manufacturer code

160-the maximum rated capacity of the equipment to be able to output, the unit is kVA /160-the voltage level of the device to be able to output, the unit is kV；

HZXB-160KV/160KVA HV series resonance test device Technical Parameters

160kV—Suffice AC withstand voltage test of 220KV/25000KVA Main transformer neutral point AC voltage withstand test; working frequency: 45-65Hz, the test voltage is not more than 160kV, the test time 1min；
Output voltage waveform distortion rate： <1.0％
Allow continuous working time: 60 minutes under the rated conditions；
Device itself quality factor： Q>30
GIS, switch, etc. the full load factor： Q>20（Load related）
Input power: three-phase 380V or single phase 220V
Frequency regulation range： 30Hz～300Hz
System measuring accuracy： 1.5％
The device has the protection function of over voltage, over current and zero position.

Equipment to follow the standard

《Electrical equipment installation engineering electrical equipment handover test standard》
- GB50150-2006
《High voltage resonant test device》
- DL/T 849.6—2004
《reactor》
- GB10229.88
《Electrical equipment preventive testing procedures》
- DL/T596-1996
《Coupling capacitor and capacitor voltage divider》
- IEC358(1990)

Equipment configuration and technical parameters：

VF power supply （1set）

Rated Capacity： 10kW；
Input voltage: 380V or single phase 220V±5% 50Hz
Output voltage: 0 ~ 400V adjustable
Output voltage frequency: 30 ~ 300Hz
- 0.1Hz step can be adjusted
Frequency stability is less than or equal to 0.02%
output current： 0～25A

Reactor（4set ）

rated operational voltage： 40kV
rated operational current： 1A
Rated inductance： 110H
Continuous working time： 5min
Temperature rise： 65k
Working frequency： 30~300Hz

Excitation transformer（1set ）

Rated Capacity： 10kVA
Input voltage： 400V
Output voltage： 10kV
output current： 1A

Capacitor voltage divider（1set ）

Capacitance： 1000pF
Rated voltage： 160kV
Working frequency： 30～300Hz
uncertainty： 1.5%

Compensating capacitor（1set ）

Capacitance： 5000pF
Rated voltage： 160kV
Working frequency： 30～300Hz

Test line and accessories 1 bag

Main transformer

Wiring diagram

Test product test configuration table

configuration| ****

REACTOR

| ****

EXCITATION

---|---|---
Test product| 40kVA/40kV 4 SET| VOLTAGE
---|---|---
220KV/25000kVA Main transformer neutral **** point| Use 4 electric reactors in series and

Compensating capacitor

| ****

10kV

VF power supply detailed introduction

Basic equipment

power

Connect the three 380V of the to the “input” of the FM power supply..

Operation panel description

Power switch: be responsible for power supply of inverter power supply.
High voltage indicator: variable frequency power supply starting instruction，.
reset: load mismatch, frequency source of overheating and other protection actions after fault reset..
Signal – divider divider for access: low voltage arm, maximum voltage 100V, the input impedance of 10M.
Grounding: for system safety grounding.
Mouse interface: access to the U disk query information or access to the mouse to replace the touch operation.
Liquid crystal display: the display of the system parameters, the wave, the menu and so on..
L input: access to power three-phase or single-phase 220V 380V + 5% + 5% ~ 45 65Hz, when the power supply is 380V, A, B, C three, can be rated load test; when the power supply is 220V, A, C phase, 1/2 can only load test
Output: variable frequency power supply output to the excitation transformer input.

Connect Power

Variable frequency power supply in the electric control box after “power switch”, lit LCD display.

Note: the fan at the two sides of the instrument is operating in the operation, which means that the internal power components of the instrument are normal.

Otherwise, there is no reduction in the internal heat of the instrument or the last test. At this point should be cut off the power, the instrument will be placed in a ventilated place for 1 hours or so, until the internal temperature is appropriate to lower the starting power.
When fans often do not start, the proposal immediately contact the manufacturer.
Please do not disassemble the instrument when the equipment is not recoverable..

Touch screen

Frequency conversion power supply control screen for the full touch screen, you only need to operate on the screen, click on the location, that can be operated.

After starting, the display interface is shown in Figure 2

Test parameters configuration: all kinds of test before each test

Parameters! After clicking on the parameter configuration, the display interface is shown in Figure 3.
The starting frequency of the automatic tuning is the highest frequency of 20Hz, the upper limit frequency is 200Hz.
The termination frequency: select the automatic tuning of the end frequency, lower frequency up to 100Hz, the upper limit frequency of the lowest is 300Hz.
1. set “the starting frequency” is not higher than the “stop frequency”.
2. when the first test is recommended to use 300Hz ~ 30Hz scan.
3. when the frequency range is known, it can be selected to reduce the test time in the appropriate frequency section.
L: set the initial voltage tunable input voltage at the beginning of this value.
1. for the low Q value of the test products such as generator, motor, aerial bus, at the beginning of this value is set to 50 ~ 70V;
2. for the Q value of the higher test products such as power cables, transformers, GIS, etc., at the beginning of this value is set to 30 ~ 50V.
The first phase of the test voltage: the first phase of the test voltage setting value.
Test time – the first stage: the first stage pressure time setting of the test voltage.
Second – stage test voltage: second stage set the test value of voltage.
The second stage: pressure test time – time setting second phase voltage test.
Third – stage test voltage: third stage set the test value of voltage.
Third stage test time: set the third stage test voltage of the voltage.
- Our voltage tracking system has the function of automatic calibration of large voltage fluctuations, but the fluctuation range of the grid voltage is small, and the fluctuation of the voltage is also in the range of the instrument. Therefore, we strongly recommend that you set up the test voltage at the test voltage. If there is no phase pressure test, it is only required to set up a stage test voltage and the corresponding test time, and other test voltage and test time is set to 0.
For the partial pressure ratio L: divider ratio is 2000:1, the divider ratio is set to 2000; (General Factory has been set up)
The overvoltage protection: limit setting test voltage value, the voltage exceeds automatic termination test, the test voltage is 10% higher than the general.
The overcurrent protection: the highest value is set low output current. Without knowing the actual test current, it is generally set to the rated current of the device.
L: set the breakdown voltage of flashover protection error value, and when the liquid crystal display must be restarted after flashover
ENT: confirm key.
1 ~ 0: digital key: select the desired set value.
ESC: return key.
Automatic test: when the “parameter configuration” is set up, click the “auto test”, enter the “automatic test” interface, display interface as shown in Figure 4
Click “start test”, the system will automatically find the resonance point, the right corner of the tip is tuned, if there is abnormal situation, please click on the “down”; blue on behalf of the voltage curve, the display interface as shown in Figure 5
To find the resonance point, the system automatically boost, the right corner of the tip, “is being boosted, such as abnormal conditions, please click” stop “; the display interface as shown in Figure 6.
When the U resonant voltage rise to the test of the pressure value, the system automatically when the pressure, the right corner of the tip is time, if there is abnormal situation, please click on the “buck stop”; the display interface as shown in Figure 7
When the time to set up the pressure time, the system automatically pressure, the right corner of the tip is the pressure, if there is abnormal situation, please click on the “down”; the display interface, as shown in Figure 8.
When the U resonance voltage is 0, the right bottom corner is indicated by the “test”, and the display interface is shown in Figure 9.
Manual test: when the “test parameters” is set up, click the “manual test” and enter the “manual test” interface, the display interface is shown in Figure 10.
Click start test, if you want to find the resonance point, click the “tune”, the system automatically find the resonance point, the blue line represents the voltage curve, showing the interface as shown in Figure 11.
If you do not want to automatically find the resonance point, first click on the “50V”, the “U” rose to a, and then click on the “frequency” to find the resonance point, to find the resonance point, click on the “rising voltage”, showing the interface as shown in Figure 12.
When the U resonance voltage rises to the setting time of the pressure value, click on the “breakdown time”, the system starts to time. Display interface as shown in Figure 13.
When the “pressure time”, click “stop”, the system automatically, the display interface as shown in Figure 14.
When the U resonant voltage buck 0, the test is completed, such as the test record, please click on the buck before saving the data, the buck click “file management”; the display interface as shown in Figure 15.
Select the record number, export and open the file, query information. As shown in Figure 16
In case of emergency in the process of testing, click on the “emergency stop”, “emergency stop”, click on the “fault reset”, in manual boost and manual FM, can choose according to the experimental conditions of voltage step into the regulation and frequency step adjustment.
The parameters calculation: the calculation of inductance, capacitance, frequency parameter, click the “parameters” display interface, as shown in figure 17.
Insert U disk, click “backup” that can be used when the page test record input to the U disk.

Common troubleshooting

General considerations

the test equipment shall be used by the high pressure test professional. The use of the test equipment should be read carefully before using the manual, and it is trained repeatedly.
the operator should be no less than 2 people. In use, the safety operation procedure of the high pressure test should be strictly observed.
in order to ensure the safety of the test correctly, in addition to be familiar with the product specification, but also must be strictly in accordance with the relevant national standards and procedures for testing.
each link can not be connected to the wrong, otherwise it can cause damage to the test device
when the device is used, the output is high voltage or high voltage, must be reliable grounding, pay attention to the operation safety.

Common failure causes and troubleshooting

fans can not start:

emergency stop, fault protection, the protection of the fault, no press the “fault reset”;
internal temperature is too high, power element thermal protection; Rule out method: shut off the instrument, the instrument will be static for 30 minutes or so, re open the power, press the “reset” button on the panel, and then start the instrument.
- If you still can not start the fan, please contact the manufacturer, not to remove the instrument!

automatic tuning can not be completed, can not find the resonance point

Phenomenon:

The tuning curve is a straight line, and the instrument has no resonance after tuning.

Reason

The circuit is not good, the test circuit wiring error, the device of an open circuit

Exclusion method

to check the reliability of the grounding device, if there is a disconnection point;
check the excitation transformer high voltage coil on-off; (low voltage winding resistance; high voltage winding resistance, each output of high pressure tail)
check each reactor off (each winding resistance);
to check the signal line of the divider; (high and low)
to check the on-off of the high and low voltage capacitor arm (1) of the core, the 2 hole is respectively on the outer shell; the 1 hole is disconnected from the 2 hole.
the device itself does not have a resonance point, but also need to check the fault of the compensation capacitor;
- If all parts are normal, there is still no resonance point, please contact the manufacturer, not to remove the instrument!

Can not boost to test voltage

Phenomenon

tuning curve is a straight line and has a lower spike;
the test voltage is higher, the high voltage is low, even in the absence of the test voltage, a voltage has reached the rated voltage, the circuit automatically buck;

Reason

the reactor and the test sample does not match the amount of capacity, no accurate to find the resonance point;
the test sample is higher, and the Q value is too low;
high voltage output voltage of excitation transformer;
high voltage connection line is too long or no high voltage is used.

Exclusion method:

the compensation capacitor is connected to the test circuit, and the circuit capacity is increased;
as many reactors in series as possible to improve the circuit inductance;
to improve the output voltage of excitation transformer;
dry process is tested to improve the insulation strength and reduce the active power loss of the loop;
generally in the equipment high voltage output, the use of high voltage corona discharge, or the ordinary high voltage output line to a shorter connection, generally not more than 5 meters.
- If all the processing, still can not solve the problem, please contact the factory, not to remove the instrument！

Capacity selection of resonant device

Test current: I=2 PI fCU * 10-3 (A)
Frequency selection (HZ)

1. generator — 50HZ, take 50HZ
2. transformers — 45~65HZ, take 50HZ
3. GIS, switch, bus – – – 30~300HZ, take 45HZ
4.  **power cable:** 30~300HZ, take 35HZ
  * Voltage selection (kV)