GDZX ZXPD-100K Instructions Manual
  1. Manuals
  2. Brands
  3. GDZX Manuals
  4. Measuring Instruments
  5. ZXPD-100K
  6. Instructions manual

GDZX ZXPD-100K Instructions Manual

Discharge detector for switchgear
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
ZXPD-100K Partial
Discharge Detector
For Switchgear

Advertisement

Table of Contents
loading

Related Manuals for GDZX ZXPD-100K

Summary of Contents for GDZX ZXPD-100K

  • Page 1 ZXPD-100K Partial Discharge Detector For Switchgear...

  • Page 2: Table Of Contents

    ZXPD-100K Content Safety Precautions ................2 Warning ....................3 Operation Notices ................5 I. Non-intrusive Partial Discharge Detection ......6 1.1 Introduction ................ 6 1.2 Airborne ultrasonic discharge activity ..... 7 1.3 Airborne high-frequency electromagnetic discharge activity ..............8 II. Technical Parameters ............... 9 III.

  • Page 3: Safety Precautions

    ZXPD-100K Safety Precautions The instrument is used for detecting the partial discharge sources in MV/HV equipment. Even if no electric discharge is detected, it is not indicated that there is no discharge activity in the high-voltage equipment. The discharge sources usually have a latent period, and the insulation property may become ineffective due to other causes than partial discharge.

  • Page 4: Warning

    ZXPD-100K Warning  The product can be used only at the ground potential.  Before starting the probe during test, it is necessary to ensure that the metal shell of the electric instrument is grounded.  Please ensure safety distance...
  • Page 5 ZXPD-100K of standards Implementation This product performs the following standards: DL-T 1416-2015 General specification for ultrasonic partial discharge tester Q/GDW 11059.1-2013 Guidelines for field application of partial discharge live test for gas insulated metal enclosed switchgear Q/GDW 11060-2013 Guidelines for field application of...

  • Page 6: Operation Notices

    ZXPD-100K Operation Notices When using TEV products, it is necessary to abide by the following rules: 1. The strong electromagnetic interference frequency range from the DC generated by mobile phones, RF transmitters, video displays and unshielded electronic equipment to 1 GHZ can influence the reading, so the...

  • Page 7: Non-Intrusive Partial Discharge Detection

    ZXPD-100K I. Non-intrusive Partial Discharge Detection 1.1 Introduction Partial discharge does not cause the electric discharge of a completely short-circuited electrode. Such discharge usually has a very small amplitude value, but it will certainly cause the continuous deterioration of the property of the insulation layer and finally cause electric equipment fault.

  • Page 8: Airborne Ultrasonic Discharge Activity

    ZXPD-100K are all based on the detection of the high-frequency signals and the ultrasonic signals in the electromagnetic spectrum. The product is an instrument which has simple operation and is specially developed for detecting the activities of electromagnetic waves and ultrasonic waves.

  • Page 9: Airborne High-Frequency Electromagnetic Discharge Activity

    ZXPD-100K 1.3 Airborne high-frequency electromagnetic discharge activity When occurring in the insulation layer of a high-voltage switching cabinet, the partial discharge activity can generate high-frequency electromagnetic wave which can leak from the switching cabinet to the external surface through the openings on the metal shell, and such openings can be the shell gaps or seal washers and th e g a p s a r o u n d o t h e r in s u l a t i o n c o m p o n e n t s .

  • Page 10: Technical Parameters

    ZXPD-100K II. Technical Parameters Fig. I Product Appearance 1. Applicable scope: the non-intrusive mode is adopted to detect and locate the partial discharge defects of the high-voltage electric equipment. 2. sensor configuration Standard: UA, TEV Optional: Sensor network for transformer, high...
  • Page 11 ZXPD-100K (Transient Earth Voltage) method. 4. Detection frequency band: : 40～200KHz TEV: 3~100MHz UHF: 300～2000MHz. 5. Measurement range: : -90～80dB TEV: -80～10dBm UHF: -80～10dBm . 6. Sensitivity: the minimum sensitivity is 10pC (specifically determined by the distance between the sensor and the discharge source).
  • Page 12 ZXPD-100K signal in a real-time manner to intuitionally judge the development of the partial discharge signal; c) Field data storage function; 10. Instrument characteristics: a) Screen display: high-contrast 3.5”TFT color screen. b) Data storage: 1000 groups of test data can be stored.

  • Page 13: Structural Layout

    ZXPD-100K III. Structural Layout 3.1 Panel arrangement The product, with portable structure and embedded signal receiving and data processing module, has multiple analysis modes and can conveniently measure the UHF signals and the ultrasonic signals generated by the partial discharge of the electric equipment. Compared with similar products, this product has convenient operation and strong function.
  • Page 14 ZXPD-100K Fig. II Keyboard Layout 5) OK key: during test, this key can be pressed to enter the setting menu; 6) Power key: the key should be pressed for 3s to turn on or turn off the power supply of the instrument;...

  • Page 15: Sensor Configuration

    ZXPD-100K interface is adopted for convenient and simple operation. Note: The imported connector is adopted for the external sensor interface. Before inserting the external sensor connector, please ensure that the marked direction of the connector is consistent with the marked direction of the socket;...
  • Page 16 ZXPD-100K can be adjusted through Left and Right keys. 2）Charging interface: the host machine is charged through the power supply attached to the machine, and it usually takes 4~5h to fully charge the host machine. 2）reset switch: when the instrument is abnormal, click this switch or "...

  • Page 17: Operation

    ZXPD-100K IV. Operation 4.1 Main interface Fig. V Main Interface After the starting interface is completely displayed, the measurement interface can be directly entered. The test interface is divided into sensor status zone, waveform zone, data zone and histogram zone.
  • Page 18 ZXPD-100K can also select the corresponding sensor according to actual connection condition. For example, if the external ultrasonic sensor is selected but not connected, the instrument will automatically switch the signal to the internal ultrasonic sensor ensure normal measurement of the signal.
  • Page 19 ZXPD-100K colors ---- green, orange and red: green for indicating slight partial discharge, yellow for indicating partial phenomenon and equipment inspection requirement, and red for indicating serious partial discharge and equipment maintenance requirement. Data display zone: for different sensors, the data zone has different practical significances.

  • Page 20: Ultrasonic Measurement Program

    ZXPD-100K 4.2 Ultrasonic measurement program When ultrasonic sensor used signal measurement, the corresponding sensor should be selected. The product has the function of remembering the previous status setting, automatically calling the sensor status at the previous shutdown, measuring the environment value and preparing for measuring the partial discharge value.
  • Page 21 ZXPD-100K gain can be determined according to the arrow mark at the right lower side. Specifically, the green arrow indicates that the gain at the moment can be increased, and the red arrow indicates that the signal gain is too large and should be reduced.

  • Page 22: Tev Measurement Program

    ZXPD-100K Fig. VII Infrared Laser Aiming 4.3 TEV measurement program Background noise: The electromagnetic signals sent from some signal sources outside the switching cabinet may also generate transient earth voltage at the outside of the switching cabinet. Such signal sources as overhead line insulator,...
  • Page 23 ZXPD-100K background value. Fig. VIII TEV Sensor Implementation of measurement After starting the instrument, it is necessary to ensure that TEV sensor is located in the free space away from the metal object; or else, the self-inspection will be influenced. After TEV mode is selected, in order to...
  • Page 24 ZXPD-100K The switching cabinet should be measured at the central position of each component on each panel, including cable box, current trans former chamber, busb ar chamber, circuit breaker, voltage transformer, etc. The p o s i t i o n s o f t h e c i r c u i t b r e a k e r a n d o t h e r...
  • Page 25 ZXPD-100K Fig. IX High Frequency Transformer The buckle shall be opened before use, and the high frequency transformer will be attached to the cable ground wire. The wiring diagram is shown in Fig.X： artial Discharge Test of HV cable With HFCT Fig.X P...

  • Page 26: Uhf Measurement Program

    ZXPD-100K 4.4 UHF measurement program UHF program is usually used for detecting UHF partial discharge such equipment GIS, corresponding UHF sensor should be connected under this function mode. Fig. XI GIS Dedicated Sensor GIS sensor can be fixed on the insulation basin between...
  • Page 27 ZXPD-100K frequency mode, and then press the Left key to filter the background noise as operating in other sensors. The reading will become normal after several seconds.

  • Page 28: Historical Data Inquiry

    ZXPD-100K 4.5 Historical data inquiry In the measurement interface, “F1” key can be pressed for data storage, and the number at the right of the disk icon indicates the group number of currently stored data, and totally 1,000 groups of data can be stored. “F2” key can be pressed for data inquiry, and the Up and Down keys can be pressed for page turning, and “F3”...
  • Page 29 ZXPD-100K 4.6 Alarm threshold adjustment The user can adjust the alarm value of the status bar according to the actual situation, the discharge degree indicated by the color state of the histogram is as follows, green for indicating slight partial discharge, yellow for...
  • Page 30 ZXPD-100K down key to adjust value, press F3 key to save and return to the test interface. Ultra Gain represents the amplification of amplifier when tested with ultrasonic, and the actual measured value should same regardless many magnification is amplified, for dBuV (or dB) is a relative quantity, which indicates the signal level value (no unit) ,the gain value can be set to 50 ~ 90.

  • Page 31: Specification For Tev Reading

    ZXPD-100K V. Data Analysis UA data analysis UA Reading Specification 0dB and below, no No partial discharge discharge sound 6dB and below, short Slight partial discharge, should discharge sound be pay attention to 6dB above, discharge obvious discharge, combined sound with TEV test to determine.
  • Page 32 ZXPD-100K Medium partial discharge, should report to team or The reading is 30 ~40dB specific responsibility, shorten the inspection cycle severe partial discharge, should report to team or specific responsibility, shorten the inspection cycle, check The reading is 40 ~50dB...
  • Page 33 ZXPD-100K Relevant Specification 1) Relation between reading (dBuV) and discharge capacity (pC) The traditional partial discharge detection carried out according to IEC60270 standard aims at measuring the real electric charge generated by high-voltage conductor during the discharging process. Therefore, the discharge...
  • Page 34 ZXPD-100K crest of the external surface of the metal panel, and the wave crest is only a part of the signal in the panel. When the pulse propagates along the armored surface of the metal, it will spread in the time domain and the area of the zone under the curve will not be changed.
  • Page 35 ZXPD-100K Table 1 dBuV - pC Reference Guideline for the Place Near to 25kV Cable Terminal Traditional Measurement of Partial Reading (dBuV) Discharge (pC) 1000 1780 3160 5600 10000 17800 31600...
  • Page 36 ZXPD-100K Table 2 shows some experience results obtained according to the ground discharge in the terminal box of 11kV mixture-filled distribution cable. Table 2 dBuV - pC Reference Guideline for Terminal Box of 11kV Mixture-filled Distribution Cable Traditional Measurement of...
  • Page 37 ZXPD-100K Table 3 shows some experience results obtained according to the ground discharge in the SRBP sleeve of oil circuit breaker. Table 3 dBuV – pC Reference Guideline for SRBP Sleeve of Oil Circuit Breaker Traditional Measurement of Reading (dBuV)
  • Page 38 ZXPD-100K Table 4 shows some results obtained according to the discharge in 11kV resin-cast current transformer. Table 4 dBuV - pC Reference Guideline for 11kV Resin-cast Current Transformer Traditional Measurement of Reading (dBuV) Partial Discharge (pC) 1260 2240 3990 7080...
  • Page 39 ZXPD-100K Table 5 shows some results obtained according to the discharge in 11kV resin-cast voltage transformer. Table 5 dBuV - pC Reference Guideline for 11kV Voltage Transformer Traditional Measurement of Reading (dBuV) Partial Discharge (pC) 1260 2240 3990 7080 12600...
  • Page 40 ZXPD-100K Table 6 shows some results obtained according to the discharge in 35kV/12500kVA transformer. Table 6 dBuV - pC Reference Guideline for 35kV/12,500kVA Transformer Traditional Measurement of Reading (dBuV) Partial Discharge (pC) 1195 2115 3765 6700 11950 21150 37650...
  • Page 41 ZXPD-100K Table 7 shows some results obtained according to the discharge in 10kV switching cabinet. Table 7 dBuV - pC Reference Guideline for 10kV Switching Cabinet Traditional Measurement of Reading (dBuV) Partial Discharge (pC) 1255 2233 3983 7050 12550 22333 Emphatically, the above tables are only taken as the general reference guideline.

  • Page 42: Service Conditions

    ZXPD-100K VI. Service Conditions Environment temperature: -35℃ ~ 65℃ Elevation: below 3,000m Maximum relative humidity, no condensation: 95% Pollution grade: grade III Maximum wind speed: 35m/s VII. Conformance Statement The product conforms to the following applicable regulations: IEC Standard EN61010-1 for Measurement of...

  • Page 43: After-Sales Service

    ZXPD-100K VIII. Warranty 8.1 Warranty Policy host this product provides one-year maintenance guarantee. But the warranty period for batteries and accessories (chargers, headsets, sensors, etc.) months. warranty includes free replacement of materials for all components that are defective, provided that they are not damaged by human beings.
  • Page 44 ZXPD-100K even if the product has been warned that it may have been damaged.

Table of Contents