Product Introduction
Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.The series of wireless high-voltage phase identifiers produced by our company is primarily used for phase calibration and phase sequence calibration in power lines and substations. The main functions include electrical inspection, phase identification, and phase sequence measurement.
This product features double shielding and advanced digital circuitry, providing strong anti-interference capability. It fully complies with EMC standards and is suitable for use in various electromagnetic field interference environments.
The high-voltage phase signal from the conductor under test is directly processed and transmitted wirelessly to a handheld receiver for phase comparison. The system qualitatively evaluates the phase identification results and displays the phase angle difference and vector diagram in real time.
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기술적인 매개변수
| Test voltage | 10V-500kV, applicable to different voltage levels |
| 정확성 | self calibration error ≤±3° |
| 샘플링 속도 | 10회/초 |
| Date and time setting | adjust the date and time to facilitate users to browse and view historical data |
| Backlight time setting | normally on, normally off, can be set within 0-999 seconds |
| Automatic shutdown setting | it can be set within 0 to 999 minutes |
| Qualitative measurement | display by acousto-optic signal |
| quantitative measurement | real-time display of phase Angle difference, error ≤5° |
| Phase sequence check | positive phase sequence, negative phase sequence (120°, 240°) |
| The measured voltage | 10V-500kV |
| 전원 공급 장치 | Handheld: No.5 AA alkaline battery 2 (1.5V) |
| X and Y detectors: No. 7 AA alkaline battery 3 (1.5V) | |
| 무선 전송 거리 | Visibility 150 m |
| In phase | Phase Angle offset ≤20° (threshold 0-90°, can be set by yourself) |
| Heterogeneous | Phase Angle offset > 20° (within threshold 0-90°, can be set by oneself) |
| Display accuracy | Quantitative measurement ≤5° |
| Phase Angle resolution | 1 ° |
| 상순 측정 | The indicated phase sequence was determined by 120° clockwise /240° counterclockwise |
| 표시하다 | Positive display LCD, can be clearly displayed under the sun |
| 작동 온도 | -35 ℃ - +50 ℃ |
| 보관온도 | To 40 ℃ -+55 ℃ |
| 상대습도 | ≤ 95% RH without condensation |
| Handsets | 0.31kg |
| X 검출기 | 0.16kg |
| 및 검출기 | 0.16kg |
Product Characteristics
1、Products using double shielding and new digital circuit, with strong anti-interference, fully meet (EMC) standard requirements, to adapt to various electromagnetic field interference occasions.
2、Adopts the wireless transmission technology, truly achieves the safe and reliable, fast and accurate, the different voltage grade (10V-500KV) applies.
3、The phase is received and compared by a handheld computer, and the results of the kernel phase are qualitatively analyzed, and the phase Angle difference and vector graph are displayed in real time.
4、Using radio transmission technology, the basic principle of its work is real-time phase comparison.
5、When checking the structure of the power network, the relative phase of different conductors can be accurately identified for three-phase connected lines.
6、in phase quality: ≤20° is in phase (phase threshold 0-90°, can be set by itself.The system default.
7、out of phase quality: > 20° for out of phase (phase threshold 0-90°, can be set by themselves.The system default.
8、On-site calibration function: On-site calibration can be carried out on the measured conductor to ensure the precision of phase Angle.
9、The transmission distance between the hand-held machine, X type detector and Y type detector is X≤150m and Y≤150m.
10、Multi-mode design, stronger applicability, safer and more convenient.
11、Unique man-machine interaction interface, simple operation.
12、FCC antenna design, stronger signal, easier to penetrate walls, doors or obstacles.
13、Double shielding, strong anti-interference, fully in line with EMC standards.
14、Charts and data display are more convenient and easy to read.
15、Qualitative measurement: display by acousto-optic signal.
Application Scenarios
Substation phase verification: Used before commissioning of newly built, expanded, or retrofitted substations to check whether the phases of high-voltage lines and equipment correspond correctly.
Transmission line phase verification: Used before energization of newly built or retrofitted transmission lines to confirm the phase relationship between lines.
Distribution line phase verification: Used for phase verification before connection, retrofitting, or restoration of power supply on 10kV, 35kV, and other distribution lines.
Loop closing verification: Used before loop closing operations in distribution networks to confirm that the phase and phase sequence at both ends of the loop are consistent.
Grid synchronization phase verification: Used before grid connection of different power sources, generating equipment, or lines to check the phase relationship of voltages on both sides.
Line maintenance / retrofitting: Used for phase verification after maintenance or retrofitting of lines, transformers, switchgear, busbars, and other equipment.
Pre-energization inspection: Used before formal energization of high-voltage equipment or lines to confirm correct wiring and avoid phase sequence or phase errors.
Three-phase phase sequence detection: Used to determine whether the three-phase high-voltage system is in positive or negative phase sequence.
Industrial high-voltage distribution systems: Applicable to phase verification and maintenance in high-voltage distribution systems of large industrial enterprises such as steel, petrochemical, mining, and manufacturing.
Power engineering construction and acceptance: Used for commissioning, testing, and acceptance verification after completion of power engineering construction.
FAQ about Wireless HV Phase Tester
Q: Can the phase tester be used for both transmission and distribution systems?
A: Yes. The application range of this device covers both transmission and distribution fields, and it can be used for phase detection on lines of different voltage levels. For distribution lines, it can be used for phase verification before line connection, retrofitting, maintenance, and power restoration. For transmission systems, it can be used for line commissioning, substation-related testing, and phase comparison between different lines. In actual use, appropriate accessories and configurations should be selected based on the specific voltage level and testing method.
Q: What is the main problem that the wireless high-voltage phase tester solves, and why is phase verification necessary in power systems?
A: The wireless high-voltage phase tester is mainly used to confirm whether the phase relationship and phase sequence between two high-voltage lines, two power sources, or different test points are correct. In cases such as new line commissioning, line retrofitting, grid connection, loop closing, and power restoration after maintenance, if the phases on both sides do not correspond correctly, it may cause serious electrical impact or equipment operational risks. The wireless phase tester collects signals from the lines under test and performs phase comparison, enabling personnel to verify the phase relationship between lines before energization or switching, thereby reducing the risk of incorrect wiring and misoperation.
Q: Can the device measure the specific phase angle?
A: Yes. The device can not only perform qualitative phase verification between two lines to determine whether they are in phase, but also measure the specific phase angle difference between the test points on both sides. This is particularly important for applications with high phase relationship requirements, such as grid connection, loop closing, and new line commissioning.
Q: Why choose our Wireless HV Phase Tester?
A: We have our own factory with over 10 years of production experience. Our products feature a wide applicable voltage range, flexible operation, and portability for easy on-site use, while also supporting phase angle difference measurement and phase sequence determination. We can also provide appropriate product configurations based on the customer's specific voltage levels, testing distances, and application scenarios, as well as offer technical support, product documentation, after-sales service, and project customization support to help customers obtain phase verification solutions that better match their actual project requirements.
Working Principle
The instrument is composed of A and B machines. A and B machines can be used separately for short-range nuclear phase. In the short-range nuclear phase, the X and Y transmitters send the measured data to the receiving host by radio. The receiving host calculates the phase difference between the two lines based on the transmitter data to 7 determine the phase difference.
Both machines can be used for remote phase verification. When the remote phase detector is used, two Y transmitters send the measurement data to two receiving hosts respectively. The host is measured synchronously after timing by GPS. The phase difference betweenthe two hosts is calculated as the phase difference between the two lines to judge the same and different phases of the two lines.
Safety Precautions
1、During the field test, the operation shall be carried out according to thesafe distance standard for high voltage test of the power department.
2、The standard configuration of the insulation rod is 3 meters, and the corresponding voltage level is ≤ 220kV. If the measured line voltage is higher than 220kV, please use an insulation rod with a length of more than 3 meters.
3、During nuclear phase operation, do not hold the position beyond the handle of the insulation rod.
Note: The transmitter uses a 3.7V rechargeable lithium battery, please do not replace other batteries.
After-sales service
1. Within one month from the date of sale of the instrument, if there is any quality problem, replace the new instrument free of charge.
2. All quality problems of the instrument within 1 years shall be repaired by our company free of charge.
3. If the instrument has been used for more than 1 years, our company shall be responsible for long-term maintenance and properly charge material fees.
4. If the instrument fails, please send it back to our company for repair. Do not disassemble the instrument by yourself, otherwise our company will not be responsible for the self damage.
