SK Series is a split core current transformer, closed by screws and
nuts, it is suitable for primary currents from 250A to 6300A AC;
available in accuracy classes Class 3, 1 or 0.5
| Standards | IEC 60044-1, IEC 61869-2, VDE 0414-1, DIN57414, BS3938, BS7626, EN 61869-2 |
| CT Ratio | 250/5A to 6300/5A |
| Rated Power | Up to 30VA |
| Accuracy class | Class 3.0, Class 1.0 or Class 0.5 |
| Terminal | Screw type covered terminals |
| Case | Non-flammable self-extinguishing Polycarbonate |
| Mounting | On cable or busbar by screws |
| Primary conductor max hole size | SK58: 250/5A to 1600/5A |
| SK88: 250/5A to 2000/5A | |
| SK812: 400/5A to 3000/5A | |
| SK816: 1000/5A to 6300/5A | |
| SK820: 2000/5A to 6300/5A | |
| Ambient temperature (operation) | -25 C ~ +85 C |
| Number of input | 1 |
| Thermal rated short-time current | Ith = 60 In |
| Thermal rated continuous current | Id = 1 * In |
| Rated frequency | 50 Hz … 60 Hz |
| Surge current limitation factor | FS 5 |
| Test voltage | 3 kV for 1 min |
| Max system voltage | 0.72 kV |
| HOLE (MM) | Code | Ratio (A) | Class | Power (VA) |
| 50X80 | SK582505903 | 250/5A | 3 | 2.5 |
| SK583005903 | 300/5A | 3 | 2.5 | |
| SK584005903 | 400/5A | 3 | 2.5 | |
| SK585005903 | 500/5A | 3 | 2.5 | |
| SK586005105 | 600/5A | 1 | 5 | |
| SK587505105 | 750/5A | 1 | 5 | |
| SK588005105 | 800/5A | 1 | 5 | |
| SK5810005105 | 1000/5A | 1 | 5 | |
| SK5812005105 | 1200/5A | 1 | 5 | |
| SK5812505105 | 1250/5A | 1 | 5 | |
| SK5815005105 | 1500/5A | 1 | 5 | |
| SK5816005105 | 1600/5A | 0.5 | 10 |
The split core current transformer 50×80 is designed for current measurement without disconnecting cables.
This model belongs to the SK812 series. Engineers use it in industrial panels and power distribution systems. It features a 50×80 mm split-core opening, which allows fast installation. Because of this design, technicians can install the transformer without shutting down the system. As a result, work becomes safer and more efficient.
The split core current transformer 50×80 supports current ranges from 400A up to 3000A. In addition, it provides secondary outputs of 1A or 5A, which makes it compatible with many meters and protection relays. The transformer supports accuracy classes 0.5, 1, and 3. Because of this flexibility, it suits both monitoring and protection applications.
Features of the Split Core Current Transformer 50×80
The split core current transformer 50×80 has a compact and strong design.
Also, it fits easily inside control panels.
In addition, it supports a burden of up to 30VA.
This ensures stable performance under load.
Moreover, the split-core mechanism locks securely.
Because of this, measurement accuracy remains stable.
Finally, installation stays simple even in tight spaces.
How the Split Core Current Transformer 50×80 Works
The transformer opens and closes around the conductor.
Next, it senses the current flowing through the cable.
Then, it converts this current into a safe secondary value.
The output becomes 1A or 5A.
As a result, meters can read the current safely.
In addition, connected equipment remains protected.
Applications
-
Power distribution panels
-
Industrial control systems
-
Energy monitoring systems
-
Retrofit electrical installations
-
Automation projects
Benefits
The split core current transformer 50×80 improves safety.
In addition, it allows installation without power shutdown.
Moreover, it saves installation time and labor.
The medium-size opening supports thick conductors.
As a result, it fits many industrial systems.
Finally, the SK812 design ensures long service life.
For related products, see our Voltage Protection Relays:
https://www.vteke.com.tr/voltage-protection-relay
To learn more about current transformer standards, visit:
https://www.iec.ch
