HZJF-9007FullyFunctionalPartial DischargeInspector · 2018. 5. 15. · 2 Sensorcenterfrequency:40Hz...

HZJF-9007 Fully Functional PartialDischarge Inspector

USER MANUAL

Huazheng Electric Manufacturing(Baoding) Co.,Ltd

Safety Terms and Symbols

This manual may contain the terms:

Warning!

Indicate the conditions and actions that may endanger the life and safety of the operator.

Attention!

Indicate the conditions and actions that may cause product damage or data loss

The product may contain the terms:

Danger: when doing this, it may hurt you.

Warning: when doing this, it may cause potential dangers to you.

Attention: when doing this, it may cause damage to this product or other device connected to this

product.

The product may contain the symbols:

High Voltage! Please refer to the manual! Earth connection protection!

Attention! Keep the safety distance with the electrified device

on field when working!!!

Product Certification and Standards

This product is suitable for the partial discharge test of high voltage equipment, such as the

safely isolated transformer and so on.

Normative References

The terms in following documents are the standard terms after they are referred by this standard.

For the references with dates, all subsequent modifications (exclusive of error published contents) or

revised editions are not applicable to this standard. For the references without dates, the latest

version is applicable to this standard.

GB/T 2423 Environmental test of electrical and electronic products

GB/T16927 High voltage test technology

GB/T 17626 Electromagnetic compatibility test and measurement technology

GB 2421 Basic environmental test rules for electrical and electronic products

GB7354 Partial discharge measurement

GB 11022 General technical conditions for high voltage switchgear

DL/T 417 Guide for partial discharge field measurement of electric power equipment

DL/T 593 Common technical requirements for high voltage switchgear and control equipment

standards

DL/T 595 Preventive test rules for electric power equipment

Safe conditions and actions and conditions and actions may

damage the product

Notice for Operation Safety

Understand the following safety precautions to avoid injury and prevent product damage or other

products connected to the product. As to avoid possible dangers, please use this product in

accordance with the regulations.

Use correct charger!

Use the special battery charger of this instrument. Otherwise, it may damage the battery of the

instrument.

Don’t open the cover for operations!

Don’t open the instrument case and operate this product.

Don’t operate when the product is suspected of failure!

If you suspect this product fails, please contact our maintenance staff for inspection. Any

maintenance and adjustment must be carried out by the maintenance staff of our company.

Please keep the product surface dry and clean.

As to avoid the equipment performance affected by the dust or moisture in the air, please keep

the product surface dry and clean.

Notice for Transport Safety

In order to avoid the screen, press key, knob or interface parts on equipment panel damage due

to the dropping during transport, please pay attention to the safety during transportation.

Be careful when inspecting on site!

Be careful when inspecting on site, as to avoid being

knocked off by the equipment on field. Make sure to keep the

safe distance from the high-voltage electrified equipment on

field to avoid working under field strength of high risks.

content

1. Overview............................................................................................................................................................1

2. Main Technical Parameters............................................................................................................................1

2.1. Use Condition................................................................................................................................................1

2.2. Technical Parameter.....................................................................................................................................1

2.3. Product Configuration.................................................................................................................................. 2

3. Equipment Appearance...................................................................................................................................3

3.1. Front key panel of portable inspector........................................................................................................3

4. Software Operation Instructions....................................................................................................................4

4.1. Start Screen and Parameter Setting......................................................................................................... 4

4.2. Ultrasonic Detection.....................................................................................................................................5

4.2.1. Ultrasonic – Correlation............................................................................................................................5

4.2.2. Ultrasonic- phase Diagram......................................................................................................................7

4.2.3. Ultrasonic - Flight Chart............................................................................................................................8

4.2.4. Ultrasonic- Waveform Diagram...............................................................................................................9

4.3. Transient Earth Voltage Detection...........................................................................................................11

4.3.1. Transient Earth Voltage – Tendency Chart......................................................................................... 11

4.4. Ultra-high Frequency Detection...............................................................................................................13

4.4.1. Ultrahigh Frequency- Tendency Chart.................................................................................................13

4.4.2. Ultra-high Frequency – Statistical Chart............................................................................................. 13

4.5. High Frequency Current Detection..........................................................................................................14

5. Partial Measuring Introduction.....................................................................................................................15

5.1. TEV Measurement..................................................................................................................................... 15

5.2. AE Measurement........................................................................................................................................15

5.3. UHF Measurement.....................................................................................................................................16

5.4. HFCT Measurement...................................................................................................................................16

6. Packing List.....................................................................................................................................................16

7. Common Faults and Solutions.................................................................................................................... 17

8. Equipment After-sales and Maintenance...................................................................................................17

1

1. Overview

Portable partial discharge inspector is mainly used for live detection of high

voltage electrical equipment. This product is simple to operate and adopts

portable structure design which can inspect on line. It equips with specific

sensors to detect various high-pressure devices, which can detect the

insulation state changes inside the equipment timely. So the insulation failure

could be dealt with in time.

2. Main Technical Parameters

2.1. Use Condition

1) Ambient Temperature: -20℃~50℃

2) Charging Environment: 0℃~45℃; Note: When charging, make sure the instrument is powered

off. When the charger is plugged in, the device cannot turn on for measurement.

3) Storage Environment: -20℃~60℃.

4) Others: There should be no excessive dust, acid, salt, corrosion and explosive gases.

2.2. Technical Parameter

1) Sensor type: high frequency current sensor, UHF sensor, TEV sensor, ultrasonic sensor

2) TEV transient earth voltage measurement: detecting frequency band: 1M-100MHz

Detection range: 0-80dbmV

Resolution ratio: 1dB

Accuracy: ±1dB

3) Non-contact ultrasonic measurement: detection range: -5dBuV~70dBV


Accuracy: ±1dB

Sensor sensitivity: -65dB

2

Sensor center frequency: 40Hz

Sensor diameter: 16mm

Heterodyne frequency: 38.4KHz

4) UHF measurement: detection range: -80dBm-0

Detecting frequency band: 300MHz-1500MHz

Resolution ratio: ±1dB

Sensor sensitivity: equivalent altitude >13mm

5) HFCT high frequency current measurement: detection range: 1pC-10000pC

Sensor detecting frequency band: 1MHz-100MHz

Sensor transfer impedance：>12mV/mA

Resolution ratio: 1pC

6) Contact ultrasonic measurement: Sensor detecting frequency band: 20kHz-200kHz

Sensor peak sensitivity：>70dB


7) Synchronization mode: internal synchronization, wireless external synchronization

8) Alarm threshold setting and indication function: partial discharge indication (right side color bar

indicator), tap shift indication (red color is suggested to shift the gear), battery power indication.

9) Working power: high capacity Li-ion battery pack, once charging can work six hours.

10) Peripherals storage interface: 16G Micro SD card

2.3. Product Configuration

Item Description

Display screen 3.5 inch color LCDs; display resolution: 320×240

SensorUHF sensor; AE ultrasonic sensor; TEV transient voltage

sensor; HFCT high frequency current sensor

External tappingSensor external interface: headset interface; Micro SD card

(16G); Charging port; USB port

3

Ext. dimension L×W×H （225mm×100mm×70mm）

Wight 0.5kg

3. Equipment Appearance

3.1. Front key panel of portable inspector

1. Red is【on/off】key

2. RUN is【pause/run】key

3. ENTER is【select/confirm】key

4. SAVE is【save】interface key

5. MENU is【menu】key

6. Others are direction keys

Introduction of main function keys on front panel:

【on/off】function key: achieve start/stop operation

【Up key】 function key: In detection process, the operation of positional parameterand parameter setting

【Run/stop】function key: In detection process, the operation of running and stop

【Right key】function key: Window switch and parameter setting

【Confirm key】function key: Confirm the setting parameters and data.

4

4. Software Operation Instructions

4.1. Start Screen and Parameter Setting

Long press the key on the panel, and enter start self-test screen. As below Fig.:

After successful self-test, press the key on the panel, and enter parameter setting screen,

as below Fig.:

【Up key】function key: Window switch and parameter setting

【Save key】function key: Data saving

【Menu key】function key: Menu display and function switch

【Down key】function key: Parameter selection

5

Select the【sensor】press or key to complete the setting of sensor type, which

include: ultrasonic, earth electric wave, ultra-high frequency and high frequency type. The default

sensor type is ultrasonic;

Ultrasonic measurement includes: correlation atlas, phase atlas, flight atlas and waveform atlas;

Earth electric wave measurement includes: tendency atlas;

UHF measurement includes: tendency atlas and statistical atlas

High frequency measurement includes: tendency atlas and statistical atlas

Select 【synchronization mode】, press or key to complete【internal synchronization】

and【wireless synchronization】setting, and the default is internal synchronization;

Select【interference remove】, press or key to complete interference remove 【open】

and【close】setting, the default is close;

Select【clock setting】, press key to complete clock and date setting;

Select【ultrasonic self-test】, press key, it indicates【ultrasonic self-test passed】for the success.

4.2. Ultrasonic Detection

4.2.1. Ultrasonic – Correlation

Measurement Screen Description

The signal collected by the inspector as above Fig.:

The max.【effective value】 is【400mV】, and it is completed by previous parameter setting. The

max. effective value of collected signal cycle is【48mV】, and the max. valid value of current cycle is

6

【38mV】；

The max.【cycle peak】is【1000mV】and it is completed by previous parameter setting. The max.

cycle peak of collected signal cycle is【70mV】, and the max. cyclical peak of current cycle is【10mV】；

【basic frequency component】and【cycle peak】 is the measured result, and it determines

whether it is 50Hz correlation or 100Hz correlation according to the final stability of the signal.

Parameter information setting:

Press the key on operation panel to enter parameter setting screen, as below Fig.:

Press the key on operation panel to select the parameter for setting.

【gain setting】setting: press the or key on operation panel to complete【low】,

【middle】, and【high】settings, as below Fig.

【peak upper limit】setting: press the or key on operation panel to complete the

maximum【peak upper limit】of signal setting, as below Fig.

【background signal】setting: press the or key on operation panel to complete the

upper limit setting of【background signal】.

【background signal calibration】setting: press the key on operation panel, it indicates【in

calibration…click confirmation to end it】 . And then press the key on operation panel to

7

complete 【background signal calibration】.

【parameter reset】setting: press the key on operation panel, it indicates【has been reset】

as below Fig.

4.2.2. Ultrasonic- phase Diagram

Measuring Screen Description:

The signal collected by the inspector as above Fig.:

The phase amplitude figure within the cycle of【0 to 360】degree, and the max. amplitude is

【26mV】, and the vertical scale range is【1000mV】, which is generated by parameter setting.

Parameter information setting

Press the key on operation panel to enter parameter setting interface, press the

key on the operation panel to select the parameter for setting, as below Fig.:


【middle】, and【high】settings, as below Fig. :

8

【vertical scale】setting: press the or key on operation panel to complete 【vertical

scale】value setting, as below Fig.:

【phase shift】setting: press the or key on operation panel to complete【phase shift】

degree setting, as below Fig.:

4.2.3. Ultrasonic - Flight Chart

Measuring Screen Description

The signal collected by inspector as above Fig.:

The finger-print map generated during【0ms】to【20ms】 , the max. amplitude is 【70mV】, and

the vertical scale range is 【1000mV】 and the max. time is【200ms】 , which is generated by

parameter setting.

Parameter Information Setting

Press the key on operation panel to enter parameter setting screen, and press key

on operation panel to select the parameter for setting, as below Fig.:

9





【 trigger threshold】 setting: press the or key on operation panel to complete

【trigger threshold】value setting, as below Fig.:

【open time】setting: press the or key on operation panel to complete【open time】

value setting, as below Fig.:

【close time】setting: press the or key on operation panel to complete【close time】

value setting, as below Fig.:

4.2.4. Ultrasonic- Waveform Diagram


10

The signal collected by the inspector is as above Fig. The max. amplitude within currently

collected signal cycle is【1153mV】, min. amplitude is【969mV】, max. amplitude is【1153mV】, which

is generated by parameter setting.








【phase shift】setting: press the or key on operation panel to complete【phase

shift】degree setting, as below Fig.:

11

4.3. Transient Earth Voltage Detection

4.3.1. Transient Earth Voltage – Tendency Chart







【discharge threshold】setting: press the or key on operation panel to complete

【discharge threshold】setting, as below Fig.:

12

【trigger time】setting: press the or key on operation panel to complete【trigger time】

setting, as below Fig.:



【early-warning threshold】setting: press the or key on operation panel to complete

【early-warning threshold】setting, as below Fig.:

【alarming threshold】setting: press the or key on operation panel to complete

【early-warning threshold】setting, as below Fig.:



【background signal】setting: press the or key on operation panel to complete

【background signal】setting, as below Fig.:

13

【background signal calibration】setting: press the key on operation panel to complete

【background signal calibration】setting, as below Fig.:

【parameter reset】setting: press the key on operation panel to complete【parameter reset】


4.4. Ultra-high Frequency Detection

4.4.1. Ultrahigh Frequency- Tendency Chart

The operation method is same as【4.3 Transient Earth Voltage】tendency chart

4.4.2. Ultra-high Frequency – Statistical Chart





14

【discharge threshold】setting: press the or key on operation panel to complete

【discharge threshold】setting, as below Fig.:

【trigger time】setting: press the or key on operation panel to complete【trigger time】





scale】setting, as below Fig.:

4.5. High Frequency Current Detection

Operation method refer to【4.4 ultrahigh frequency】operation instruction.

15

5. Partial Measuring Introduction

The measuring method of portable partial discharge inspector is simple. As the value has been

set before delivery, there is no need to recalibrate the device during actual measurement. Just select

corresponding test mode（TEV\AE\UHF\HFCT）and uses the built-in sensor or external sensor directly

for measuring.

5.1. TEV Measurement

TEV background noise detection: before conducting partial discharge detection of the earth

electric wave to switch cabinet, the background noise level of the system should be tested at first. The

background value should be tested on the metal surface of non-switch cabinet device, such as metal

door, and metal gate. Detect the background values of different points at different positions in switch

room, and also at the location where need testing. It usually takes the average value tested at more

than three metal locations as the background noise value.

Detection location selection: During partial discharge testing of switch cabinet, the location of

electrical equipments should be confirmed at first. Mainly tests the partial discharge conditions of the

busbar (joint, wall bushing, and support insulator), circuit breaker, CT, PT, cable connector etc., which

are usually located at the middle and lower part of the switch cabinet’s front panel, and upper, middle

and lower part of the rear panel.

Notice: In detection, it should be ensured that the sensor is closely contacted with the metal

panel of the switch cabinet, and the sensor should be as close as possible to the metal panel on the

places where the signal is easily leaked, such as check window, ventilation shutters etc. If the

detection value is large, it’s suggested to measure more than three times for test result confirmation.

5.2. AE Measurement

Align the front non-contact AE sensor of host machine with the gap of the switch cabinet, and

observe whether the AE data and wave are changed by moving observation along the gap, and

record the data.

During ultrasonic wave detection, make the ultrasonic wave sensor scan along the gap on switch

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cabinet to detect. The air passage is required between the sensor and switchgear to ensure the

ultrasonic wave signal can be broadcast.

5.3. UHF Measurement

UHF measurement requires ultra-high frequency processing unit to connect external UHF sensor

and UHF signal adjustment unit, place the sensor on to-be-test device (place it in the gap for switch

cabinet, and at the unshielded position of the disk insulator for GIS) for detection.

5.4. HFCT Measurement

HFCT measurement requires special HFCT signal cable to connect the HFCT sensor. When

detecting, install the HFCT card on the earth line of high voltage device, such as the transformer and

high voltage cable etc.

6. Packing List

No.Product Name Specification Qty.

Delivery

Deadline (Time

of delivery to

customer)

Remark

1

Portable

partial

discharge

inspector

1

Set

2

Ultra-high

frequency

sensor

1

Set

3 Ultrasonic sensor1

Set

4 HFCT sensor1

Set

17

5 TEV sensor1

Set

6 Power adaptor1

Pc

7 Factory documentManual, detection

report

1

Set

7. Common Faults and Solutions

1) If the device is unable to start normally, please check whether the battery is out of power. After

charging for half an hour, press the power button to restart.

2) The detection signal is weak, please check if the sensor and host cable are well connected; If the

power of signal adjustment unit has run out (indicator is off), it requires charging in time.

8. Equipment After-sales and Maintenance

1) Our company committed that the product warranty is one year.

2) When the equipment is unused, please keep it clean and tidy.

3) When operating the equipment, please refer to the manual.

4) If the device is not used for a long time, it requires charging every three months as to ensure the

battery life.

HZJF-9007FullyFunctionalPartial DischargeInspector · 2018. 5. 15. · 2 Sensorcenterfrequency:40Hz...

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Transcript of HZJF-9007FullyFunctionalPartial DischargeInspector · 2018. 5. 15. · 2 Sensorcenterfrequency:40Hz...