ZCT507 PCB Pin type zero phase current transformer products
Electrical Specification
(Customized is available)
| Rated Current | 30A |
| DC Resistance at 25℃ | 26±4Ω |
| Dielectric Withstanding Voltage(Hi-pot) | 2500Vrms |
| Output Voltage Vo | 13±3mV |
Conditions of use for zero sequence current transformers
A current transformer can be installed on each of the three-phase lines, or three-phase conductors can be passed through a zero-sequence current transformer together, or a zero-sequence current transformer can be installed on the neutral line N to use it to detect three phases. Vector sum of current.
For the specific application of zero-sequence current protection, a current transformer (CT) can be installed on each of the three-phase lines, or three-phase conductors can be passed through a zero-sequence CT together, or a zero-sequence CT can be installed on the neutral line N. These CTs are used to detect the vector sum of three-phase current, that is, the zero-sequence current Io, IA+IB+IC=IO, when the three-phase load connected to the line is fully balanced (no ground fault, and the leakage current of the line and electrical equipment is not considered ), IO=0; when the three-phase load connected to the line is unbalanced, then IO=IN, and the zero-sequence current at this time is the unbalanced current IN; when a ground fault occurs in a phase, a single-phase ground must be generated The fault current Id, the zero sequence current detected at this time IO=IN+Id, is the vector sum of the three-phase unbalanced current and the single-phase ground current.
| 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 | |||||
| ZCT501 | 30 | 8-14 | lin=30mA,RL=1kΩ¸ | -10%~0% | 10%Max | 6.8 | 17.3 | 7 |
| ZCT502 | 30 | 6.3-7.3 | lin=22.5mA RL=1kΩ¸ | -10%~0% | 10%Max | 6.8 | 18.2 | 7.2 |
| ZCT503 | 20 | 7.5-10.5 | lin=11.25mA RL=1kΩ¸ | -10%~0% | 10%Max | 5.5 | 15.4 | 6 |
| ZCT505 | 30 | 17-21 | lin=22.5mA RL=1kΩ¸ | -10%~0% | 10%Max | 9.3 | 20.9 | 7.2 |
| ZCT506 | 30 | 17-21 | lin=22.5mA RL=1kΩ¸ | -10%~0% | 10%Max | 5 | 17 | 9.5 |
| ZCT507 | 30 | 25-30.5 | lin=20mA RL=1kΩ¸ | -10%~0% | 10%Max | 6 | 18.6 | 10 |
| ZCT511 | 20 | 4.8-5.1 | lin=20mA RL=1kΩ¸ | -10%~0% | 10%Max | 6.8 | 17.5 | 7.8 |
| ZCT515 | 30 | 3.2-4 | lin=25mA RL=330Ω¸ | -10%~0% | 10%Max | 8.1 | 18 | 6.5 |
| ZCT516 | 40 | 6.3-7.3 | lin=22.5mA RL=1kΩ¸ | -10%~0% | 10%Max | 7.1 | 17 | 19.1 |
| ZCT519 | 50 | 17-22 | lin=11mA,RL=2kΩ¸ | -10%~0% | 10%Max | 9 | 23 | 8.3 |
| ZCT520 | 50 | 20-24 | lin=20mA RL=1kΩ¸ | -10%~0% | 10%Max | 12 | 26.7 | 11 |
| ZCT526 | 40 | 25-30 | lin=25mA RL=1kΩ¸ | -10%~0% | 10%Max | 5.8 | 19.3 | 7.8 |
| ZCT528 | 30 | 7.5-12 | lin=30mA,RL=1kΩ¸ | -10%~0% | 10%Max | 9.3 | 20.9 | 7.5 |
| ZCT534 | 40 | 6.4-7.5 | lin=20mA RL=1kΩ¸ | -10%~0% | 10%Max | 6.8 | 17.4 | 6.5 |
| ZCT538 | 30 | 3.6-3.8 | lin=500mA,RL=150Ω¸ | -10%~0% | 10%Max | 5.5 | 15.4 | 5.3 |
| ZCT541 | 50 | 12-13 | lin=25mA RL=330Ω¸ | -10%~0% | 10%Max | 9 | 22 | 8.3 |
| ZCT543 | 20 | 3.5-4.5 | lin=20mA,RL=370Ω¸ | -10%~0% | 10%Max | - | - | 6.4 |
| ZCT547 | 30 | 15-18 | lin=500mA,RL=150Ω¸ | -10%~0% | 10%Max | - | - | 17 |
| ZCT548 | 30 | 13.2-17.8 | lin=11mA,RL=360Ω¸ | -10%~0% | 10%Max | 19 | 5 | 7.5 |
