ZCT201 current transformer and voltage transformer supplier
Electrical Specification
(Customized is available)
| Rated Current | 30A |
| DC Resistance at 25℃ | 45±3Ω |
| Dielectric Withstanding Voltage(Hi-pot) | 2500Vrms |
| Output Voltage Vo | 6.5±1mV |
Selection of Zero Phase Current Transformer
Installation method
From the perspective of maintenance and installation, try to choose the open-close zero-sequence current transformer.
Product structure
Choose according to the actual use. Generally, most of the cables are used, and the busbar type is used in very few occasions, such as the zero-sequence protection of the generator outlet.
Cooperate with protection
According to the protection device used in conjunction with the corresponding selection.
There is no setting value for the low-current grounding line selection device itself, and the zero-sequence current is only one of the criteria for the device. A certain output is required to meet the device startup, grounding line selection or corresponding line tripping. The load impedance of the device itself is not large, but each zero-sequence current transformer needs to be connected to the device through cables, so the impedance of the cable is the main load impedance of the zero-sequence current transformer, and the load impedance of this zero-sequence current transformer Generally, it is about 2.5Ω.
This zero-sequence current transformer can generally be selected as a non-transformation ratio type, the primary zero-sequence current is 1-40A, and the secondary current is about 0.02-1A.
| 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 |