Product Introduction
Partial discharge is a pulse discharge that generates a series of physical phenomena and chemical changes, including light, sound, electrical, and mechanical vibrations, both inside and around electrical equipment. These various physical and chemical changes associated with partial discharge can provide detection signals for monitoring the internal insulation condition of electrical equipment. When insulation defects occur within high-voltage electrical equipment, partial discharge signals are typically produced. By detecting and analyzing these partial discharge signals, it is possible to determine if there are insulation hazards within the high-voltage equipment, preventing the further expansion of potential accidents.
The EDJF-9008 Multi-functional Partial Discharge Detector manufactured by Wuhan鄂电Electric Power Test Equipment Co., Ltd. is a portable multi-functional instrument. It utilizes ground electrical waves, ultrasonic waves, ultra-high frequency, and high-frequency current detection methods to test the partial discharge of equipment, enabling the reading of partial discharge amplitude and waveform patterns. It offers storage and reading capabilities for 2D and 3D patterns, and can effectively evaluate the partial discharge conditions of electrical equipment. This multi-functional partial discharge detector is suitable for the partial discharge detection of electrical equipment such as GIS, switchgear, transformers, and power cables.
The equipment is portable, easy to operate, and all tests have no impact on the operation of high-voltage equipment. The product can observe measurement signals over multiple cycles, identify discharge frequencies, and analyze through various modes, enabling clear fault judgment. Its measurement technology has reached a high level both domestically and internationally.
Product Features
Product Reference Standards
General Technical Conditions for Ultrasonic Partial Discharge Testers - DL-T 1416-2015
Q/GDW 11059.1-2013 Guideline for On-site Application of Partial Discharge Test Technology for Gas-Insulated Metal-Enclosed Switchgear
Q/GDW 11060-2013 Technical Guidelines for Field Application of Transient Ground Voltage Partial Discharge Live Testing Technology for AC Metal-Enclosed Switchgear
Q/GDW 11063-2013 Technical Specification for Transient Voltage Partial Discharge Detector
IEC60270 "Partial Discharge Measurement"
GB1094 "Electric Power Transformers"
IEC6067.11 "Dry-Type Transformers"
IEC60885-3 "Whole Cable Extrusion Test"
GB1094 "Power Transformers"
GB1207 "Voltage Transformer"
GB12706.4 "Requirements for Tests of Power Cable Accessories"
GB/T3048.12 "Method for Electrical Property Tests of Wires and Cables - Partial Discharge Test"
GB/T 16927 "High Voltage Test Technology"
GB/T7354 "Partial Discharge Measurement"
GB1208 "Current Transformer"
DL417 "Guidelines for On-Site Measurement of Partial Discharge in Electrical Equipment"
Technical Specifications
1. Application Range: Utilizes non-invasive detection methods to inspect and locate partial discharge defects in high-voltage electrical equipment.
2. Sensor Configuration
Standard Equipment: Ultrasonic Sensor (UA), Ground Electro-Magnetic Wave Sensor (TEV)
Optional: Transformer-specific sensor networks, GIS-specific ultra-high frequency sensors, high-voltage cable-specific sensors, also available for customization according to customer requirements.
3. Inspection Principles: Ultrasonic (UA), Ground Electrostatic Wave (TEV), and Ultra-High Frequency (UHF) methods.
4. Test Frequency Band:
Ultrasonic: 40～200 KHz
Terrestrial wave: 3~100MHz
Ultra-high frequency: 300-2000 MHz.
5. Measuring Range:
Ultrasonic: -90 to 80 dB
Ground wave: -80 to 10 dBm
Special High Frequency: -80 to 10 dBm
6. Sensitivity: As low as 10pC (specifically dependent on the distance between the sensor and the power source).
7. Sensor:
Ultrasound Sensor: 20~200 kHz
② Terrestrial Emitted Wave (TEV): 5 ~ 100 MHz.
③ High-frequency sensor: 300-2000 MHz, featuring directional receiving characteristics.
8. Equipped with built-in ultrasonic sensors, a combination of ground electrical wave and ultrasonic sensors; optional components include transformerspecific sensors, GIS-specific sensors, cable-specific sensors, and more.
9. Software Features:
Continuous detection of ultra-high frequency, ground wave, and ultrasonic signals to determine the presence of partial discharge.
② Real-time display of the change trend of the measured signal, allowing for a relatively intuitive judgment of the development of partial discharge signals.
③ On-site data storage capability.
10. Instrument Characteristics:
① Screen Display: High Contrast 3.5 Inch TFT Color Screen.
② Data Storage: Capable of saving 1,000 sets of test data.
③ Working Power: Built-in 8.4V lithium battery, capable of continuous operation for 8 hours.
④ Power: Input 100-240VAC, output 8.4V/3A, charging time 3-4 hours.
Dimension: 220 * 100 * 40.
⑥ Instrument Weight: 1.5 kg.
Operating Temperature: -25℃ to 45℃.
Storage Temperature: -35℃ to 60℃.
