1. The three-phase CNC sine inverter power supply output has soft start and soft stop functions, so the testing speed is fast and the accuracy is high,which is suitable for ttr electrical testing in power system maintenance.
2. 3 phase transformer turns ratio tester supports ratio, group and polarity tests for three-phase transformers, single-phase transformers, PT, CT, Z-type transformers; it also has a special CT ratio polarity test function and an angle difference test function for single-phase testing.
3. CT ratio polarity testing function.
4. It has angle difference testing function during single-phase testing.
5. The tap changer can be tested up to 99 gears.
6. Wide testing range, up to 10000.
7. High and low voltage reverse connection reminder.
8. Output short circuit reminder.
9. Non power-off clock and date display; The data storage method is local storage, with 100 test data pieces. The stored data can be transferred to a computer (PC);
10.Thermal printer printing function.
11. Small size, light weight, convenient for carrying and use.
Product Introduction
For the power system, transformers are the core equipment in the system, so the long-term and reliable operation of transformers will be related to the stability and reliability of the entire system. Before the newly installed transformer is put into operation and in accordance with the preventive testing regulations of State Grid, it is required to conduct regular ttr test of transformer on the operating transformer. The traditional variable ratio bridge operation is cumbersome, the reading is not intuitive, and necessary conversions need to be made. The test result is only the value of one phase change ratio. This turns ratio tester overcomes the shortcomings of traditional ratio bridge testing. The screen adopts a large high-resolution LCD display screen, which is convenient for on-site use. It has a Chinese menu prompt function, easy and intuitive operation, and can complete three-phase ratio testing in one go. The testing speed is fast and the accuracy is high.
Product Parameter
|
Model |
JH2702 |
|
Range |
0.8~10000 |
|
Accuracy |
± (reading × 0.1%+2 words) (less than or equal to 1000) |
|
± (reading × 0.2%+2 words) (greater than 1000 but less than or equal to 3000) |
|
|
± (reading × 0.3%+2 words) (greater than 3000) |
|
|
Resolution Ratio |
0.9~9.9999(0.0001) |
|
10~99.999(0.001) |
|
|
100~999.99(0.01) |
|
|
1000~9999.9(0.1) |
|
|
10000(1) |
|
|
Workingpower supply |
AC100-240V, 50/60Hz |
|
Host weight |
4.5Kg |
|
Volume |
320mm(L)×280mm(W)×135mm(H) |
|
Operating temperature |
-10℃~50℃ |
|
Relative Humidity |
<90%, no condensation |
Product Accessories
- A yellow portable hard case
- A black carrying bag
- A power cord
- A dedicated grounding test lead
- Three spare fuses
- A USB cable
- Two rolls of printing paper
- Four sets of dedicated test leads (red, yellow, green, black) with large alligator clips
FAQ
Q: What types of transformers and electrical equipment can this ttr tester conduct ratio and polarity tests on?
A: The tester supports ratio, group and polarity tests for three-phase transformers, single-phase transformers, Z-type transformers, PT and CT; it also has a special CT ratio polarity test function and an angle difference test function for single-phase testing, covering the common test needs of power system transformers and mutual inductors.
Q: Can the tester complete the three-phase ratio test in one operation, and what advantages does this function have for on-site testing?
A: Yes, the tester can complete the three-phase ratio test in one go with one-time wiring. This function avoids the cumbersome operation of single-phase separate testing in traditional methods, greatly shortens the on-site test time, reduces the workload of testers for repeated wiring, and improves the efficiency of power transformer outage maintenance.
Q: What are the requirements for the grounding operation of the tester during the test, and why is reliable grounding necessary?
A: The instrument must be reliably connected to the grounding terminal on the panel with a grounding wire before the test; the on-site grounding point must be cleaned to remove paint or rust to ensure good contact. Reliable grounding can prevent electric shock hazards caused by leakage of the instrument during the test, and also reduce the interference of external electromagnetic signals on the test data, ensuring the accuracy of the test results.
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