HZJF-9007 Fully Functional Partial Discharge Inspector USER MANUAL. Huazheng Electric Manufacturing(Baoding) Co.,Ltd

Transcription

1 HZJF-9007 Fully Functional Partial Discharge Inspector USER MANUAL Huazheng Electric Manufacturing(Baoding) Co.,Ltd

2 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!!!

3 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 GB/T16927 GB/T Environmental test of electrical and electronic products High voltage test technology Electromagnetic compatibility test and measurement technology GB 2421 GB7354 GB DL/T 417 DL/T 593 standards DL/T 595 Basic environmental test rules for electrical and electronic products Partial discharge measurement General technical conditions for high voltage switchgear Guide for partial discharge field measurement of electric power equipment Common technical requirements for high voltage switchgear and control equipment Preventive test rules for electric power equipment

4 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

5 safe distance from the high-voltage electrified equipment on field to avoid working under field strength of high risks.

6 content 1. Overview Main Technical Parameters Use Condition Technical Parameter Product Configuration Equipment Appearance Front key panel of portable inspector Software Operation Instructions Start Screen and Parameter Setting Ultrasonic Detection Ultrasonic Correlation Ultrasonic- phase Diagram Ultrasonic - Flight Chart Ultrasonic- Waveform Diagram Transient Earth Voltage Detection Transient Earth Voltage Tendency Chart Ultra-high Frequency Detection Ultrahigh Frequency- Tendency Chart Ultra-high Frequency Statistical Chart High Frequency Current Detection Partial Measuring Introduction TEV Measurement AE Measurement UHF Measurement HFCT Measurement Packing List Common Faults and Solutions Equipment After-sales and Maintenance...17

7 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 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 Resolution ratio: 1dB Accuracy: ±1dB Sensor sensitivity: -65dB 1

8 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 Resolution ratio: 1dB 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: Sensor External tapping UHF sensor; AE ultrasonic sensor; TEV transient voltage sensor; HFCT high frequency current sensor Sensor external interface: headset interface; Micro SD card (16G); Charging port; USB port 2

9 Ext. dimension Wight L W H (225mm 100mm 70mm) 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 parameter and 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. 3

10 Up key function key: Window switch and parameter setting Save key function key: Data saving Down key function key: Parameter selection Menu key function key: Menu display and function switch 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.: 4

11 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 Ultrasonic Detection 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 5

12 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 6

13 complete background signal calibration. parameter reset setting: press the key on operation panel, it indicates has been reset as below Fig 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.: gain setting setting: press the or key on operation panel to complete low, middle, and high settings, as below Fig. : 7

14 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.: 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.: 8

15 gain setting setting: press the or key on operation panel to complete low, middle, and high settings, as below Fig. : vertical scale setting: press the or key on operation panel to complete vertical scale value setting, as below Fig.: 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.: Ultrasonic- Waveform Diagram Measuring Screen Description 9

16 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. 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.: gain setting setting: press the or key on operation panel to complete low, middle, and high settings, as below Fig. : 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.: 10

17 4.3. Transient Earth Voltage Detection Transient Earth Voltage Tendency Chart Measuring Screen Description 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.: gain setting setting: press the or key on operation panel to complete low, middle, and high settings, as below Fig. : discharge threshold setting: press the or key on operation panel to complete discharge threshold setting, as below Fig.: 11

18 trigger time setting: press the or key on operation panel to complete trigger time setting, as below Fig.: phase shift setting: press the or key on operation panel to complete phase shift degree 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.: vertical scale setting: press the or key on operation panel to complete vertical scale value setting, as below Fig.: background signal setting: press the or key on operation panel to complete background signal setting, as below Fig.: 12

19 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 setting, as below Fig.: 4.4. Ultra-high Frequency Detection Ultrahigh Frequency- Tendency Chart The operation method is same as 4.3 Transient Earth Voltage tendency chart Ultra-high Frequency Statistical Chart Measuring Screen Description 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.: 13

20 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 setting, as below Fig.: phase shift setting: press the or key on operation panel to complete phase shift degree setting, as below Fig.: vertical scale setting: press the or key on operation panel to complete vertical scale setting, as below Fig.: 4.5. High Frequency Current Detection Operation method refer to 4.4 ultrahigh frequency operation instruction. 14

21 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 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 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 15

22 cabinet to detect. The air passage is required between the sensor and switchgear to ensure the ultrasonic wave signal can be broadcast 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 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 Delivery No. Product Name Specification Qty. Deadline (Time of delivery to Remark customer) Portable 1 2 partial discharge inspector Ultra-high frequency sensor 1 Set 1 Set 3 Ultrasonic sensor 4 HFCT sensor 1 Set 1 Set 16

23 5 TEV sensor 1 Set 6 Power adaptor 1 Pc 7 Factory document Manual, report detection 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. 17