BLUE JAY PD3000 Partial Discharge Monitor User Manual
- June 10, 2024
- BLUE JAY
Table of Contents
BLUE JAY PD3000 Partial Discharge Monitor User Manual
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When you use PD3000 partial discharge monitor, be sure to read this user manual carefully, and be able to fully understand the implications, the correct guidance of operations in accordance with user manual, which will help you make better use of PD3000 partial discharge monitor, and help to solve the various problems at the scene.
- Always keep safe distance between the high voltage part and the instrument, probe and operator.
- Measurements must not be taken when thunderstorms are nearby.
- Do not operate the instrument or accessories in explosive atmospheres.
- After the battery alarm of the instrument, please turn off the power to charge.
- Do not open the instrument without permission, this will affect the warranty of the product. The factory is not responsible for self-disassembly.
- When the instrument is transported, it should avoid rain erosion and prevent collision and falling.
- When storing and keeping the instrument, attention should be paid to the ambient temperature and humidity, and it should be protected from dust, moisture, shock, acid, alkali and corrosive gas.
- Please read this user manual carefully
- Please save this document
SUMMARIZE
Partial discharge is a kind of pulse discharge, which will produce a series of physical phenomena and chemical changes such as light, sound, electrical and mechanical vibration in the interior and surrounding space of power equipment. These various physical and chemical changes accompanied by partial discharge can provide detection signals for monitoring the internal insulation state of power equipment. When insulation defects appear inside high-voltage electrical equipment, it will be accompanied by the generation of partial discharge signals. Through the detection and analysis of partial discharge signals, it can be judged whether there is a hidden danger of insulation inside the high- voltage electrical equipment, and the further expansion of potential accidents can be prevented.
PD3000 partial discharge monitor can be used in conjunction with UHF sensor, TEV sensor, Ultrasound sensor and online detection of partial discharge of high voltage equipment such as transformers, high voltage switchgear, GIS, and cable joints. Easy to carry, fast measurement, strong anti-interference ability, easy to use on site.
FEATURES
- Waveform data recording function.
- Non-intrusive detection method,
- Alarm multi-level threshold setting.
- Sensor detects TEV and audible ultrasonic.
- Automatic PD data acquisition and analysis.
- Rapid detection of partial discharge conditions.
- 2*DO NC & NO contact for external alarm trig.
- Joint detection of partial discharge signals by transient earth waves.
- Anti-interference performance and measurement accuracy.
- RS 485, Modbus-RTU, SCADA systems
APPLICATIONS
- Ensure the safety of personnel and equipment
- Improve equipment reliability and safety
- Evaluate the performance parameters and electrical characteristics of the equipment.
- Monitoring of transformers, cables, switchgear, busbars
- Data analysis to predict equipment failure and lifetime
- Monitor equipment operating status and prevent equipment accidents
TECHNICAL PARAMETERS
HMI electrical parameters
| Auxiliary Power | 85-265Vac/dc,20-60Vdc Optional |
|---|---|
| Power consumption | 6W |
| Communication | RS-485, MODBUS-RTU |
| Digital output | 2* NC & NO, passive node |
| Environment temperature | -10 ~ +60°C |
| Environment humidity | RH 20% ~ 95% (No condensation) |
| Dimensions (L × W × H) | 969685mm or 144144100mm |
| Open install hole | 9191mm or 138138mm |
Remote sensor node
| Wireless band | 433Mhz ~2.4Ghz optional |
|---|---|
| Signal transmission distance | Up to 80m (260 feet) |
| Static power consumption | <10mW |
| Temperature monitor range | -20~250C |
| Measurement accuracy | ±2% |
| Body withstand temperature | 70°C |
| Installation method | Silicone strap self-binding, Metal ring band fixing |
Remote sensor common
| Power supply | **12Vdc or 2000mAh build in battery*** |
|---|---|
| Wireless band* | 433Mhz ~2.4Ghz optional |
| Signal transmission distance | Up to 80m (260 feet) |
| Static power consumption | <10mW |
| Installation method | 4* strong magnet, wall mount |
TEV sensor
| Detect range | 0~60 dBmV |
|---|---|
| HF Frequency Response | 3~100MHz |
| Resolution / Accuracy | 1dBmV / ±1dBmV |
Ultrasound sensor
| Detect range | -7dBμV ~ 68dBμV |
|---|---|
| Resolution / Accuracy | 1dB / ±1dB |
| Sensitivity | -65 dB (0 dB=1 volt/μbar rms SPL) |
| -65 dB (0 dB=1 volt/μbar rms SPL) | 40 kHz |
INSTALLATION AND START-UP
Installation Dimensions (Unit: mm)
TEST PRINCIPLE
Built-in sensors (Ultrasonic and TEV)
There are two principles for partial discharge detection of switchgear: ultrasonic principle and transient earth voltage (TEV) principle. The built-in ultrasonic sensor and TEV sensor of this product are used to measure partial discharge of high-voltage switchgear. Front position, this part needs to be close to (ultrasonic measurement> or close to (TEV measurement) high-voltage switchgear during testing. Note that approaching and closeness are different, depending on which principle is used to test the switchgear.
Ultrasonic measurement
If you choose the built-in ultrasonic sensor to measure the partial discharge of the switchgear, you hardly need to do other operations or settings after starting up, Because the built-in ultrasonic sensor is selected by default after the product is turned on, the upper left of the screen will display which sensor is currently connected.
In the ultrasonic measurement mode, the measurement data is dBuv, because dBuV is a logarithmic function value based on 1uV, therefore, the measured data in the ultrasonic mode can be positive or negative. According to the processing capacity of the ultrasonic amplifier of this product, it can reach -6dBuV The test ranges to 68dBuV, the larger the negative value, the smaller the ultrasonic signal, the closer to Ouv, not negative! Usually the measured data in an interferencefree environment is between -6dBuV and odBuV.
Insulation condition of switchgear:
| Data | Definition |
|---|---|
| 6~0dBuV, no discharge sound | No partial discharge |
| 0 ~ 6dBuV, short discharge sound | Slight discharge, and attention should be |
paid to it later.
Above 6dBuV, have discharge sound| Obvious discharge, should be judged in
combination with TEV.
Note: The demarcation point (6dBuV) is slightly different in different regions, so it is recommended to use 6dBuV as the demarcation point, so that the operating status of the switchgear can be warned in advance.
TEV measurement
In the TEV measurement mode, the reference pulse count value P/Cycle is also required, and the pulse number and amplitude comprehensively measure the health of the switchgear.
When the environmental value is large, it is necessary to find out the interference source. The interference source of TEV is different from that of ultrasonic. Ultrasonic interference is generally limited to a limited space, while TEV interference affects the entire space through radio frequency, such as electric welding machines, frequency converters, walkie-talkies, Wireless broadcasting stations, etc. Compared with ultrasonic interference, such interference signals are sometimes difficult to avoid or clear, so it is recommended to use ultrasonic measurement when the environment (interference) value is detected to be large.
Insulation condition of switchgear:
| Data | Definition |
|---|---|
| The reading is | No partial discharge, Recheck once a year. |
| The reading is 20-29dB. | Slight discharge. |
| The reading is 29-40dB. | Moderate partial discharge should be reported and |
shorten the inspection cycle.
The reading is 40-50dB| Serious partial discharge should be reported and
shorten the inspection cycle, and be checked when power failure
The reading is 50-60dB.| Severe partial discharge, power outage and
maintenance as soon as possible.
Optional external sensors (AE, HFCT, UHF)
Contact ultrasonic sensor| AE measurement| For Transformers, GIS,
Motors, Frequency: 40 ~ 150kHz
---|---|---
High frequency transformer| HFCT measurement| For Cable Frequency: 1 ~ 30MHz
UHF sensor| UHF measurement| For GIS Frequency: 300-2000MH
Note:
All the above sensors are connected through the multi-function sensor extension port at the bottom of the host. When the sensor is connected through the same extension port, the host will automatically identify the sensor type, select the sampling channel of the corresponding frequency, and display the relevant parameters of the sensor on the top of the interface.
SAFETY CONSIDERATIONS
All installation specification
described at the previous chapters named:
INSTALLATION AND STARTUP, INSTALLATION MODES and SPECIFICATIONS.
Please note that with the instrument powered on, the terminals could be dangerous to touching and cover opening actions or elements removal may allow accessing dangerous parts. This instrument is factory-shipped at proper operation condition.
- The device must have a professional installation and maintenance.
- Any operation of the device, you must cut off the input signal and power;
TECHNICAL SERVICE
For any inquiry about the instrument performance or whether any failure happens, contact to Blue Jay’s technical service.
Blue Jay – After-sales service 1802, Building 2, No.88, Jianxin East
Road, Chongqing,400020, China
Tel – + 0086 023 67628702
E-mail: tech@cqbluejay.com
Tel: +0086-023-67628702
Email: tech@cqbluejay.com
www.cqbluejay.com
Add: 1802,Building 2,No.88,Jianxin East Road,Chongqing,400020,China
References
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