ZCT209 Lead Wire Type zct current transformer
Electrical Specification
(Customized is available)
| Rated Current | 30A |
| DC Resistance at 25℃ | 48±6Ω |
| Dielectric Withstanding Voltage(Hi-pot) | 2500Vrms |
| Output Voltage Vo | 13±0.5mV |
In the judgment of ground fault, the zero phase current transformer is mainly used for auxiliary judgment. If a ground fault occurs, it can be judged according to the variable of the two-phase current difference, thereby improving the accuracy of ground fault judgment and better distinguishing single-phase ground fault or Two-phase ground fault. In the actual research, the relevant personnel use the zero-sequence component to judge the ground fault, mainly check whether there is a problem on the line, and avoid the adaptive zero-sequence current set under the interference of other factors;
At the same time, the zero-sequence increment method is adopted. Judging the zero-sequence voltage, further determine the relevant influencing factors of the ground fault. If the ground fault occurs, it is necessary to judge the above two faults according to the characteristics of the two-phase current difference mutation. The study found that when a ground fault occurs, the value of the two components of the current difference is small.
If the values of the other components are similar, it can be determined that a single-phase ground fault has occurred; when the two-phase current variable value gradually increases, then it can be determined. Judging that a two-phase-to-ground short-circuit fault has occurred.
| Item | Rated Current(A) | Output Voltage Vo(mv) | Test Conditions | Over Leakage Characterstics | Temperature Characteristics -35~80℃ | Dimensions (mm) |
||
|---|---|---|---|---|---|---|---|---|
| Click PN For Details | ID | OD | HT | |||||
| ZCT201 | 30 | 4-5.1 | lin=10mA RL=510 | -10%~0% | 10%Max | 5.9 | 16 | 6.5 |
| ZCT202 | 30 | 5.1-6 | lin=8mA RL=750 | -10%~0% | 10%Max | 5.8 | 15.2 | 6.1 |
| ZCT203 | 50 | 17-21 | lin=22.5mA RL=1k | -10%~0% | 10%Max | 9.2 | 21 | 7.3 |
| ZCT204 | 30 | 12-15 | lin=22.5mA RL=1k | -10%~0% | 10%Max | 9.8 | 20.6 | 6.5 |
| ZCT205 | 30 | 12.5-15.5 | lin=8mA RL=4.7k | -10%~0% | 10%Max | 9.3 | 21.3 | 7.2 |
| ZCT206 | 50 | 17-21 | lin=22.5mA RL=1k | -10%~0% | 10%Max | 12.3 | 26 | 10 |
| ZCT207 | 30 | 7.5-8.5 | lin=25mA RL=1k | -10%~0% | 10%Max | 15.4 | 29.8 | 10 |
| ZCT208 | 60 | 10.2-12.5 | lin=20mA RL=680 | -10%~0% | 10%Max | 7.2 | 19.4 | 7.7 |
| ZCT209 | 50 | 8-11.2 | lin=11.25mA RL=1k | -10%~0% | 10%Max | 7 | 17.2 | 7 |
| ZCT210 | 50 | 8-11.2 | lin=11.25mA RL=1k | -10%~0% | 10%Max | 6.8 | 16.9 | 7.9 |
| ZCT211 | 50 | 8-11.2 | lin=11.25mA RL=1k | -10%~0% | 10%Max | 10.6 | 25.4 | 8 |
| ZCT212 | 60 | 10.2-12.5 | lin=20mA RL=680 | -10%~0% | 10%Max | 11 | 23.5 | 8 |
| ZCT213 | 60 | ≥300 | lin=25mA RL=1k | -10%~0% | 10%Max | 9.4 | 23.8 | 12.7 |
| ZCT218 | 60 | 10.2--12.5 | lin=25mA RL=680 | -10%~0% | 10%Max | 7.5 | 18.9 | 7.6 |
| ZCT220 | 60 | ≥300 | lin=25mA RL=47k | -10%~0% | 10%Max | 10.1 | 24 | 11.5 |
| ZCT225 | 60 | ≥300 | lin=25mA RL=47k | -10%~0% | 10%Max | 10.9 | 25.5 | 9 |
| ZCT401 | 100 | 17-21 | lin=22.5mA RL=1k | -10%~0% | 10%Max | 15 | 29.2 | 10 |
| ZCT402 | 100 | 6.3-7.5 | lin=20mA RL=370 | -10%~0% | 10%Max | 17.5 | 35.9 | 8.8 |
| ZCT403 | 250 | 17-21 | lin=22.5mA,RL=1k | -10%~0% | 10%Max | 29 | 51 | 12 |
| ZCT404 | 250 | 17-21 | lin=22.5mA,RL=1k | -10%~0% | 10%Max | 32 | 55.6 | 12 |
| ZCT405 | 250 | 17-21 | lin=22.5mA,RL=1k | -10%~0% | 10%Max | 42 | 80*69 | 20 |
| ZCT406 | 630 | 17-21 | lin=25mA,RL=1k | -10%~0% | 10%Max | 51.3 | 84 | 26 |
| ZCT407 | 800 | 17-21 | lin=22.5mA,RL=1k | -10%~0% | 10%Max | 51 | 96*89 | 23 |
| ZCT408 | 100 | 125-150 | lin=500mA,RL=150 | -10%~0% | 10%Max | 19 | 36 | 11.5 |
| ZCT409 | 225 | 125-150 | lin=500mA,RL=150 | -10%~0% | 10%Max | 24 | 42 | 12 |
| ZCT410 | 400 | 125-150 | lin=500mA,RL=150 | -10%~0% | 10%Max | 43 | 90*74 | 16 |
| ZCT411 | 800 | 120-151 | lin=500mA,RL=150 | -10%~0% | 10%Max | 53 | 96*89 | 23 |