Features and Advantages
1. Suitable for semi-finished product testing, finished product routine testing, and quality inspection testing after product maintenance of power transformers;
2. The system adopts modular design, with flexible configuration and the ability to add or reduce testing items according to actual needs;
3. The test bench adopts an automatic control architecture of “PLC+industrial control computer”, which can select test items through computers, automatically complete tests, record test results, and form reports;
4. There is an interlocking mechanism between experimental projects to prevent misoperation;
5 The test bench has multiple protections: zero position protection, overvoltage protection, overcurrent protection, high-voltage ungrounded protection, etc;
6. CT and PT are used inside the test bench to isolate high and low voltage, and the operating panel is kept away from high voltage hazards;
7. The testing units of this system adopt anti-interference design, with high accuracy and good repeatability;
8. The test results are automatically corrected based on environmental temperature and power harmonics, simplifying the operation of test personnel and greatly improving test efficiency;
Parameter
| Test item | ||
| Effective value of three-phase voltage | ||
| Effective value of three-phase current | ||
| Three-phase active loss | ||
| Three-phase reactive loss | ||
| Three-phase average voltage | ||
| Three-phase mean voltage value | ||
| Three-phase mean current value | ||
| Total power | ||
| No-load current percentage | ||
| Impedance voltage percentage | ||
| Frequency | ||
| Power factor | ||
| Item | Measuring scope | Relative error |
| Voltage | 0.1~650V | ±(0.2% reading + 0.1% range) |
| Current | 0.1~300A | ±(0.2% reading + 0.1% range) |
| Power | U*I | ±(0.2% reading + 0.1% range) |
| Power factor | 0.1~0.9999 | ± 3% |
| Power supply | AC380V+10% | 50HZ+2% |
| Usage environment | Working temperature scope is 0~40℃ and relative humidity is 30%~90% | |












