**1. Overview**
Our company has recently developed a new generation of wireless high-voltage phase detectors. These devices utilize advanced digital signal collectors that can collect and transmit high-voltage line phase information wirelessly. The received phase data is analyzed by the phase detector and compared to provide the final phase result.
The high-voltage phase analyzer employs wireless signal transmission and high-insulation telescopic test rod collectors, ensuring reliable performance and accurate test results. Additionally, it features a voice prompt function, making it ideal for verifying phase and phase sequence in power lines, substations, and transformers. It can also help identify wiring groups, perform phase testing, check phase sequences, and conduct electrical inspections.
This product complies with the People's Republic of China Electric Power Industry Standard "DL/T971-2005 AC 1kV~35kV Portable Phase Detector for Live Working."
**2. Safety Considerations**
2.1 When operating on-site, personnel should adhere to the relevant guidelines outlined in the "Electrical Safety Work Procedures."
2.2 The voltage rating of the accompanying insulating telescopic pole is ≤220kV.
**3. Performance Features**
3.1 The main unit features a large-screen dot-matrix LCD display with simplified Chinese characters, offering clear and straightforward visuals.
3.2 The main unit can quickly display phase test results, allowing users to instantly view the phase readings.
3.3 The phase meter provides high-resolution results, enabling precise identification of any angle that is an integer multiple of 30 degrees.
3.4 The main unit offers low-power text and voice prompts, reminding users to replace both the collector and the main unit batteries in a timely manner.
3.5 The backlight on the main unit can be toggled on or off via a button, accommodating usage in low-light conditions.
3.6 The main unit includes a 15-minute auto-shutdown feature to prevent unnecessary battery drain, optimizing energy efficiency.
3.7 The insulated telescopic poles boast a high voltage rating of ≤220kV, making them easy to transport and use.
3.8 The collector has a long transmission range, capable of sending signals up to 60 meters in open areas.
3.9 The phase detector can also be used for identifying transformer wiring groups.
**4. Technical Specifications of High-Voltage Phase Detector**
4.1 Test Accuracy: Calibration error ≤ 0.1°; Field test: Same-phase error ≤ 3°, Different-phase error ≤ 5°.
4.2 Sampling Rate: 5 times/sec.
4.3 Main Unit Operating Voltage: 9V ± 2V.
4.4 Collector Operating Voltage: 12V ± 2V.
4.5 Main Unit Operating Current: ≤ 8mA.
4.6 Collector Operating Current: ≤ 5mA.
4.7 Maximum Distance Between Collector and Main Unit: ≤ 60m.
4.8 Operating Temperature: -25°C to 50°C.
4.9 Operating Humidity: ≤ 95%.
4.10 Applicable Voltage Levels: 0.38-220kV.
**5. Usage Instructions**
5.2 Main Unit Inspection:
5.2.1 System Self-Test: Connect two collectors to the self-test copper terminals. Attach the calibration plug wire to a 220V power source, connecting the other end to the X and Y collectors. Holding two self-test copper terminals, the main unit should display the same phase with a phase difference display of 0-0.5°.
Note: The phase angle shown on the screen is based on the angle of collector X relative to collector Y.
If no phase difference is displayed, ensure the collectors are properly connected to the phase line, and switch the two plugs if necessary.
5.2.2 On-Site Calibration: At the site, the two collectors should first be self-calibrated on the same phase of the measured circuit.
5.3 On-Site Usage:
5.3.1 Qualitative in-phase or out-of-phase phase based on the results displayed on the main unit's LCD screen.
5.3.2 The LCD display shows X and Y indicating the signals from the X and Y collectors, respectively.
5.3.3 When a low voltage prompt appears below X and Y, it indicates that the X and Y collector batteries are low and need replacement with 12V batteries.
5.3.4 A low power indicator on the top of XY signals that the main unit’s battery is low and needs replacement.
5.3.5 The phrase "Wireless High-Voltage Phase Detector" appearing at the top right of the display indicates the main unit is turned on.
5.4 Even when the XY collector or the main unit battery voltage is low, the system can still operate for a period. If the battery becomes unstable, it must be replaced. The battery should be replaced simultaneously when the collector is replaced.
5.5 If the main unit display is abnormal, turning it off and back on should reset it to normal.
5.6 Press the backlight key to activate the display backlight.
5.7 Collector Replacement:
5.7.1 When replacing the battery, unscrew the tail of the collector counterclockwise to remove its casing, then open the battery cover to insert a new battery. Ensure correct battery polarity.
5.7.2 The collector has two types of contacts that can be replaced as needed. To replace the contacts, turn them counterclockwise.
5.7 On-Site Phase Testing:
5.7.1 Connect the X and Y collectors to the same high-voltage line. The main unit should display X and Y as being in phase with a phase difference of 0—1°.
5.7.2 For phase testing on high-voltage lines, arrange the X and Y collectors accordingly.
5.7.3 For accurate values, place one collector at the collection point of the high-voltage line and move the other around the other collection point to find the most accurate phase angle.
5.7.4 During phase testing, data such as AA', AB', BB', BC', and CC' showing different phases occurs because the two sets of power supply wiring groups being measured differ, potentially resulting in 30° or 60° phase differences.
5.7.5 For measurements ≥10kV, the XY collector can be directly on the wire or insulation skin for phase testing. For ≥66kV phase testing, the XY collector can use either contact or non-contact methods. For 110kV or 220kV measurements, place the XY collector 300mm to 1000mm below the high-voltage line. For 500kV measurements, place the XY collector 1000-2000mm below the high-voltage line, with an allowable deviation of ±300mm.
5.7.6 To measure phase sequence: Assume a line is phase A, place X on phase A and Y on another phase. Displaying 120° indicates the phase sequence is phase B; displaying 240° indicates the reverse phase sequence, which is phase C.
5.7.7 Electrical Inspection: Hang one collector on the high-voltage line. If the corresponding collector symbol is displayed on the main unit screen, the high-voltage line is powered. If the symbol is not displayed, the high-voltage line is without power (though the collector cannot replace an electric tester).
**6. Maintenance**
6.1 The high-voltage phase detector is a precision instrument; please avoid opening it unnecessarily.
6.2 Replace the battery at least once a year.
6.3 Store the product in a dry, cool, and dust-free environment.
6.4 Before first use, the insulation rods should undergo a pressure test.
6.5 Insulation rods should be tested annually for pressure resistance. Note: The upper part of the insulation rod has a built-in 350mm-long antenna that cannot withstand voltage tests; the built-in antenna and rod wall must remain intact.
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