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On site calibration device for voltage transformers
On site calibration device for voltage transformers
Product details
Main features
Portable, integrated, on-site calibration of 0.1, 0.2, 0.5, 1.0 level electromagnetic voltage transformers (with residual voltage windings and other secondary windings for energy measurement), transformer polarity and ratio error judgment function, instrument fault self check and alarm function, with overvoltage and overcurrent protection function, reverse polarity display and sound alarm function.
Main indicators
In-phase component (%): 0.0001~± 20.00 resolution 0.0001
Orthogonal component (min): 0.001~± 500 Resolution 0.001
Impedance (Ω): 0.0001~10.00 Resolution 0.0001
Admittance (ms): 0.0001~12.00 Resolution 0.0001
Workload: Current: T0Voltage less than 0.1 Ω (cos Φ=1) between Tx: less than 0.1VA (100V) between a and x
Orthogonal component (min): 0.001~± 500 Resolution 0.001
Impedance (Ω): 0.0001~10.00 Resolution 0.0001
Admittance (ms): 0.0001~12.00 Resolution 0.0001
Workload: Current: T0Voltage less than 0.1 Ω (cos Φ=1) between Tx: less than 0.1VA (100V) between a and x
Accuracy level
0.05 level/0.02 level
Main functions
1. Adopting a 320 × 240 dot matrix touchscreen color LCD display screen, with full Chinese status display and operation interface;
2. The wiring diagram is displayed directly for convenience and intuitiveness, and the measurement results (such as ratio difference, angle difference, load, etc.) are displayed on the same screen;
3. Automatic measurement of voltage transformer error (ratio difference, angle difference) and actual load of secondary circuit (VA);
4. Automatic range switching during the measurement process;
5. It has the function of judging the polarity and transformation ratio errors of transformers;
6. Full point measurement can be carried out according to different accuracy requirements based on the measurement points required by the regulations;
7. It has instrument fault self checking and alarm functions, as well as overvoltage and overcurrent protection functions;
8. It has the function of storing measurement result data, with a data capacity of not less than 1000 sets, and the data can be saved to a USB drive;
During the experiment, the response speed is fast, the adjustment process is smooth, the operation is simple, and there is no need for human intervention. It achieves fully automatic testing, reduces random interference, improves system stability, facilitates point finding, and has strong anti-interference ability;
10. When the polarity is reversed, it will display the reversed polarity and have an audible alarm function;
11. It has communication function and can transmit measured data to the energy metering management system through a USB flash drive. The upper computer software is easy to operate and the human-machine interface is friendly;
12. The instrument is small in size, light in weight, integrated, intelligent, automated, easy to operate, and portable, making it very suitable for on-site calibration.
2. The wiring diagram is displayed directly for convenience and intuitiveness, and the measurement results (such as ratio difference, angle difference, load, etc.) are displayed on the same screen;
3. Automatic measurement of voltage transformer error (ratio difference, angle difference) and actual load of secondary circuit (VA);
4. Automatic range switching during the measurement process;
5. It has the function of judging the polarity and transformation ratio errors of transformers;
6. Full point measurement can be carried out according to different accuracy requirements based on the measurement points required by the regulations;
7. It has instrument fault self checking and alarm functions, as well as overvoltage and overcurrent protection functions;
8. It has the function of storing measurement result data, with a data capacity of not less than 1000 sets, and the data can be saved to a USB drive;
During the experiment, the response speed is fast, the adjustment process is smooth, the operation is simple, and there is no need for human intervention. It achieves fully automatic testing, reduces random interference, improves system stability, facilitates point finding, and has strong anti-interference ability;
10. When the polarity is reversed, it will display the reversed polarity and have an audible alarm function;
11. It has communication function and can transmit measured data to the energy metering management system through a USB flash drive. The upper computer software is easy to operate and the human-machine interface is friendly;
12. The instrument is small in size, light in weight, integrated, intelligent, automated, easy to operate, and portable, making it very suitable for on-site calibration.
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