HZJ Alternating Current Dielectric Test Transformer System
Principle Of Work
Connecting the control unit (it is the supplementary equipment of test transformer, detailed see the explaining book) with work frequency 220V (above 10KVA with 380V), adjusting 0-220V/380V voltage input to HZJ (HZJZ) test transformer primary winding through autotransformer. According to the principle of electromagnetic influence, the secondary (high voltage) winding may gain the same multiple voltage value than the primary winding with the circle rated that is the high frequency voltage of work frequency. It can obtain the direct current high frequency voltage after commuted by high frequency voltage silicon stack and filtrated by capacitor, among whose amplitude value is the 2 times value of work frequency.

Technical parameters of HZJ series alternating current test transformers.
| Model | Capacity(KVA) | High Frequency Voltage Output Voltage (KV) | High Frequency Voltage Output Current(mA) | Low Frequency Voltage input | Ratio | Tempera- ture(℃) raised/ 30 minute | ||
| V | A | |||||||
| HZJ-1.5 | 1.5 | 50 | 30 | 200 | 7.5 | 500 | 10 | |
| HZJ -3 | 3 | 50 | 60 | 200 | 15 | 500 | 10 | |
| HZJ -5 | 5 | 50 | 100 | 200 | 25 | 500 | 10 | |
| HZJ -10 | 10 | 50 | 200 | 220/380 | 50/26 | 500 | 10 | |
| HZJ -20 | 20 | 50 | 400 | 380 | 53 | 500 | 10 | |
| HZJ -30 | 30 | 50 | 600 | 380 | 79 | 500 | 10 | |
| HZJ -40 | 40 | 50 | 800 | 380 | 105 | 500 | 10 | |
| HZJ -50 | 50 | 50 | 1000 | 380 | 132 | 500 | 10 | |
| HZJ -5 | 5 | 100 | 50 | 200 | 25 | 1000 | 10 | |
| HZJ -10 | 10 | 100 | 100 | 200/380 | 50/26 | 1000 | 10 | |
| HZJ -20 | 20 | 100 | 200 | 380 | 53 | 1000 | 10 | |
| HZJ -30 | 30 | 100 | 300 | 380 | 79 | 1000 | 10 | |
| HZJ -40 | 40 | 10 | 400 | 380 | 105 | 1000 | 10 | |
| HZJ -50 | 50 | 100 | 500 | 380 | 132 | 1000 | 10 | |
| HZJ -100 | 100 | 100 | 100 | 500 | 263 | 1000 | 10 | |
| HZJ -150 | 150 | 15 | 10 | 400 | 375 | 1000 | 10 | |
| HZJ -200 | 200 | 100 | 2000 | 500 | 400 | 1000 | 10 | |
| HZJ -250 | 250 | 100 | 2500 | 380 | 500 | 1000 | 10 | |
| HZJ -20 | 20 | 150 | 133 | 380 | 53 | 1500 | 10 | |
| HZJ -30 | 30 | 150 | 200 | 380 | 79 | 1500 | 10 | |
| HZJ -50 | 50 | 150 | 333 | 380 | 132 | 1500 | 10 | |
| HZJ -100 | 100 | 150 | 666 | 500 | 263 | 1500 | 10 | |
| HZJ -150 | 150 | 150 | 1000 | 500 | 300 | 1500 | 10 | |
| HZJ -200 | 200 | 150 | 1333 | 500 | 400 | 1500 | 10 | |
| HZJ -250 | 250 | 150 | 1666 | 380 | 500 | 1500 | 10 | |
| HZJ -30 | 30 | 200 | 150 | 380 | 79 | 2000 | 10 | |
| HZJ -50 | 50 | 200 | 250 | 380 | 132 | 2000 | 10 | |
| HZJ -100 | 100 | 200 | 500 | 380 | 263 | 2000 | 10 | |
| HZJ -150 | 150 | 200 | 750 | 500 | 300 | 2000 | 10 | |
| HZJ -200 | 200 | 200 | 1000 | 500 | 400 | 2000 | 10 | |
| HZJ -250 | 250 | 200 | 1250 | 500 | 500 | 2500 | 10 | |
| HZJ -30 | 30 | 250 | 120 | 380 | 79 | 2500 | 10 | |
| HZJ -50 | 50 | 250 | 200 | 380 | 132 | 2500 | 10 | |
| HZJ -100 | 100 | 250 | 400 | 380 | 263 | 2500 | 10 | |
| HZJ -150 | 150 | 250 | 600 | 500 | 300 | 2500 | 10 | |
| HZJ -200 | 200 | 250 | 800 | 500 | 400 | 2500 | 10 | |
| HZJ -250 | 250 | 250 | 1000 | 500 | 500 | 2500 | 10 | |
Note: 100KVA and the above input voltage may enhance to 3000V or proposed by the users.

















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