Dual Canopy Mechanical Electrical Engineering Co., Ltd. stands as a preeminent high-tech enterprise at the forefront of electrical system automation and precision testing.
Our commitment to innovation drives the development of cutting-edge devices, including advanced intelligent control systems and state-of-the-art automated monitoring solutions,
which are meticulously engineered to significantly enhance the stability, efficiency, and overall performance of modern power systems. Moreover, our high-precision testers and sophisticated fault diagnosis instruments have earned the trust of power companies globally, thanks to their unparalleled accuracy in data acquisition and their ability to deliver highly efficient, insightful analysis.
Our comprehensive product portfolio encompasses a diverse range of essential electrical equipment. This includes Oil-immersed and Dry-type Transformers, which are designed to meet the varying needs of different applications; the Transformer Oil Test Series, which ensures the quality and reliability of transformer oil; the Transformer Test Series, which provides comprehensive testing solutions for transformers; and the High Voltage Tester Series, which is essential for ensuring safety and performance in high-voltage environments. These products are specifically tailored to serve a broad spectrum of industries, such as power systems, electrified railways, shipbuilding, telecommunications, municipal management, and other large-scale enterprises, where reliability and precision are of utmost importance.
Every product manufactured by Dual Canopy adheres to stringent international CE standards and Chinese national standards, guaranteeing the highest levels of quality, safety, and reliability. Our global export network has enabled us to reach customers across the world, and we are proud to have received widespread recognition and high praise from major clients.
For excellence in electrical innovation and reliability, choose Dual Canopy.
01
High Quality
Integrated factory strength to support all kinds
02
Advanced Equipment
Integrated factory strength to support all kinds
03
Professional Team
Integrated factory strength to support all kinds
04
Custom Service
Integrated factory strength to support all kinds
Product Introduction
Transformer capacity measuring instrument, also known as transformer capacity tester or transformer capacity characteristic tester, is an instrument used for on-site testing of the capacity of power transformers in distribution systems. This instrument is mainly used to measure the actual capacity of transformers and solve the problem of users replacing the nameplate with falsely marked capacity to evade electricity supplementation fees. It is applicable for standard distribution transformer detection in low-voltage and small-current scenarios.
The instrument adopts an integrated design, with a small size and light weight, making it easy to carry and suitable for field operations. It is equipped with A/D synchronous AC sampling and digital signal processing technology, featuring a measurement accuracy of 0.2 class voltage (0.5V to 10V) and current (0.1A to 10A). The capacity detection range covers 10kVA to 6300kVA. It is equipped with a blue screen full Chinese graphic display and supports hierarchical menu-guided operation. Its circuit design balances functionality and convenience, enabling quick acquisition and display of key measurement data.
Transformer capacity measuring instrument, also known as transformer capacity tester or transformer capacity characteristic tester, is an instrument used for on-site testing of the capacity of power transformers in the distribution system. This instrument is mainly used to measure the actual capacity of the transformer and solve the problem of users using false marked capacity to evade the payment of overdue electricity fees. It is applicable for standard distribution transformer detection in low-voltage and small current scenarios.
This instrument adopts an integrated design, with a small size and light weight, making it easy to carry and suitable for on-site operation. It is equipped with A/D synchronous AC sampling and digital signal processing technology, with a measurement accuracy of 0.2 class voltage (0.5V to 10V) and current (0.1A to 10A). The capacity detection range covers 10kVA to 6300kVA. It is equipped with a blue screen full Chinese graphic display and supports hierarchical menu guidance operation. Its circuit design takes into account both functionality and convenience, enabling quick acquisition and display of key measurement data.
Product parameters
Built-in power output range
Voltage: 0 - 10V
Current: 0 - 10A
Characteristic channel test range and accuracy
Voltage range: AC 50 - 750V. Accuracy: ±0.2% (F.S) ± 2 digits
Current range: AC 0.5A - 100A. Accuracy: ±0.2% (F.S) ± 2 digits
Measurement accuracy of power and other indicators
Active power: ±0.5% (F.S) (CosΦ > 0.1)
±1.0% (F.S) ± 2 digits (0.02 < CosΦ < 0.1)
No-load loss measurement: ±2% (0.1 ≤ CosΦ ≤ 1)
Transformer capacity test range
6.3 - 125000 kVA
3.5 Operating temperature
-20℃ - +60℃
Power supply requirements
Adapter output 12.6V 1000mA
Mains AC 160V - 265V
Insulation
⑴, Insulation resistance between the input points of capacity test, voltage, and current and the chassis ≥ 100 MΩ
⑵, The input of the charging power supply to the chassis withstands industrial frequency 2kV (effective value), and the test duration is 1 minute
FAQ
01.How long is the shelf life?
02.What are the safety usage requirements?
Connect and disconnect correctly: When the test leads are connected to the live terminals, do not randomly connect or disconnect the test leads.
Grounding the product: In addition to grounding through the power cord grounding wire, the grounding post on the product shell must also be grounded. To prevent electric shock, the grounding conductor must be connected to the ground. Before connecting to the input or output terminals of this product, ensure that this product has been correctly grounded. Please check by yourself whether the user's grounding wire is reliable.
Pay attention to the rated values of all terminals: To prevent fire or electric shock hazards, please pay attention to all the rated values and markings of this product. Before wiring, please read the product manual to further understand the information about the rated values.
Do not operate the instrument before it is installed properly: If the cover or panel has been removed, do not operate this product.
Use the appropriate fuse: Only use fuses of the type and rating specified by this product.
Avoid contact with exposed circuits and live metal: When the product is powered on, do not touch the exposed contacts and parts.
Do not operate when there is a suspected fault: If you suspect that this product is damaged, please have the maintenance personnel from our company check it. Do not continue to operate.
Do not operate in damp or explosive environments. Keep the product clean and dry.
03.Parameter settings?
Primary Voltage: Before determining the transformer capacity, it is necessary to correctly input the operating voltage of the transformer. This item represents the rated voltage of the transformer at the primary side. It can be directly input using the numeric keypad. The unit is kV.
Current Temperature: This value is used to correct the load loss measured during the test to the standard load test conditions (such as 75°C). The correction formula for load loss is: , where K represents the resistance temperature coefficient. The algorithm is: . In the formula, t represents the actual temperature during the test. The temperature correction formula for impedance voltage is: . In the formula, represents the percentage of the measured impedance voltage at the current temperature, represents the actual measured load loss at the current temperature, and represents the actual rated capacity of the tested transformer. Please measure the current temperature of the tested transformer using an infrared thermometer and input it using the numeric keys.
Nominal Capacity: This is the rated capacity of the tested transformer;
Correction Temperature: As mentioned in the "Current Temperature" item, the load loss test results need to be corrected. The correction should be carried out to a unified temperature range. Here, that unified temperature range is the one mentioned. Generally, the correction temperature for oil-immersed transformers is 75°C, while for dry-type transformers, there are various different correction temperatures.
04.Data Management?
The data displayed here are all the saved test result data. When there are "No-load Test" or "Load Test" data saved, the lower right corner of Figure 13 will display "→". At this time, by pressing the "←" and "→" keys, you can view the test results of capacity test, no-load test, and load test. Use the "↑" and "↓" keys to flip through and view the storage records of other transformers. Click the "Print" button to print the current page data. Click the "Delete" button to delete the current record or all records. Click the "End" button to return to the main menu.
Our address
Building 2302, Building 1, Cloud Center, Xiangyang North Street
Phone Number
0886 155 1122 8189
slina@dualcanopy.com
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