Transformer Dielectric Loss Tester
1. Overview
The transformer dielectric loss tester is a new generation product developed by our company. It adopts a high anti-interference digital signal collector to collect and wirelessly transmit the phase information data of the tested high-voltage line. The phase detector host receives and automatically performs phase comparison, finally displaying the phase detection result.
This phase detector uses wireless signal transmission and high-insulation telescopic test rod collectors for sampling. The product has reliable performance, accurate test results, and voice prompt function. It is suitable for phase and phase sequence verification of power lines and substations, as well as identification of transformer connection groups. It has functions such as phase detection, phase sequence measurement, connection identification, and voltage detection.
The manufacturing standard complies with the People's Republic of China electric power industry standard "DL/T971-2005 Portable Phase Detector for Live Working AC 1kV~35kV".
2. Safety Precautions
2.1 When using on site, operators should follow the relevant requirements of the "Safety Code for Electric Power Work" for operation.
2.2 The voltage level of the matching insulating telescopic rod of this instrument is ≤220kV.
3. Packing List
3.1 Aluminum alloy packing case 1 piece
3.2 Test host 1 unit
3.3 Collector head 2 pieces
3.4 Insulating telescopic rod 2 pieces
3.5 Calibration plug wire 1 piece
3.6 1.5V battery 6 pieces
3.7 Spare 12V battery 2 pieces
3.8 Instruction manual (warranty card) 1 copy
3.9 Certificate of conformity 1 copy
4. Performance Features
4.1 The host adopts a large-screen dot-matrix LCD, displaying in simplified Chinese characters, which is concise and intuitive;
4.2 The host has a voice reading function for phase detection results, allowing quick reading of the displayed phase detection results;
4.3 The phase detector has high resolution in test results, effectively identifying any angle that is an integer multiple of 30 degrees;
4.4 The host has low battery text and voice prompts, timely reminding users to replace the collector and host batteries;
4.5 The host backlight can be turned on or off via button selection, meeting usage in low-light environments;
4.6 The host has a 15-minute auto power-off function, preventing power consumption caused by forgetting to turn off, effectively saving power;
4.7 The insulating telescopic rod has a very high voltage withstand level of ≤220kV, and is easy to carry and use;
4.8 The collector has a long transmission distance, with the farthest signal transmission distance reaching up to 100 meters in open areas;
4.9 This phase detector can also be used for identification of transformer connection groups.
5. Technical Specifications
5.1 Test accuracy: self-calibration error ≤0.1°; field test: same-phase error ≤3°, different-phase error ≤5°.
5.2 Sampling rate: 5 times/second
5.3 Host working power supply: 9V±2V
5.4 Collector working power supply: 12V±2V
5.5 Host working current ≤8mA
5.6 Collector working current ≤5mA
5.7 Transmission distance between collector and host ≤60m
5.8 Working environment temperature: -25℃-50℃
5.9 Working environment humidity: ≤95%
5.10 Applicable voltage level: 0.38—220kV
