The SCTK667A series split-core current transformer is designed for current measurement and monitoring in new or existing power distribution networks. The product uses a split-core structure that allows quick installation without disconnecting or removing cables or busbars. The wide window design accommodates large-diameter cables or busbars. The secondary winding has a built-in precision parallel resistor, providing a safe low-voltage output without the need for external sampling resistors. Multiple sizes are available to adapt to various existing installation conditions. It is widely used for current measurement, monitoring, and protection in power lines and equipment, as well as current and power measurement for motors, lighting, air compressors, HVAC, and automation control systems, as well as energy monitoring and relay protection devices.
Features
- Input: 100 to 1000A
- Output of 1A or 5A
- Split core current transformer with interleaved joint and hinge structure
- Wide inner window, allowing clamping of big cables or bus-bars
- Test hole series size clamp leaker AC current transformer
- Wide range of sizes to accommodate all the existing installations
Applications
- Power line current measurement and monitoring
- Electrical equipment current protection
- Motor current and power measurement
- Lighting system power monitoring
- Air compressor current monitoring
- HVAC systems
- Automation control systems
- Energy monitoring and relay protection devices
Electrical Parameter
| Frequency |
50-400Hz |
| Rated Input |
100A-1000A |
| Measuring range |
5%In-130%In |
| Rated Output |
5A/1A |
| Ratio |
≤ ± 0.5% |
| Phase angle |
≤ ±30min |
| Dielectric strength |
2.5KV/1mA/1min |
| Insulation Resistance |
DC500V/100MΩmi |
Mechanical Parameter
| Case |
PA /UL94-V0 |
| Bobbin |
PA |
| Core |
Silicon steel |
| Internal structure |
Epoxy |
| Construction |
Tie |
| Operating Temp |
－25℃～＋75℃ |
| Operating Humidity |
≤85% |
| Output Connection |
Terminal |
Type selection
| Input/Output |
Burden(VA)/Class |
Input/Output |
Burden(VA)/Class |
| (A) |
0.5 |
1.0 |
3.0 |
(A) |
0.5 |
1.0 |
3.0 |
| 100/5 |
1.5 |
2.5 |
3.75 |
100/1 |
1.5 |
2.5 |
3.75 |
| 150/5 |
1.5 |
2.5 |
3.75 |
150/1 |
1.5 |
2.5 |
3.75 |
| 200/5 |
1.5 |
2.5 |
5 |
200/1 |
1.5 |
2.5 |
5 |
| 250/5 |
1.5 |
2.5 |
5 |
250/1 |
1.5 |
2.5 |
5 |
| 300/5 |
2.5 |
2.5 |
5 |
300/1 |
1.5 |
2.5 |
5 |
| 400/5 |
2.5 |
3.75 |
5 |
400/1 |
2.5 |
3.75 |
5 |
| 500/5 |
2.5 |
3.75 |
5 |
500/1 |
2.5 |
3.75 |
5 |
| 600/5 |
2.5 |
3.75 |
5 |
600/1 |
2.5 |
3.75 |
5 |
| 800/5 |
5 |
10 |
15 |
800/1 |
5 |
10 |
15 |
| 1000/5 |
5 |
10 |
15 |
1000/1 |
5 |
10 |
15 |
Notes: Product specifications can be customized
FAQ
Q: What is the function of the built-in precision resistor?
A: The secondary winding has a built-in precision parallel resistor. It converts the current signal directly into a safe low-voltage output, eliminating the need for external sampling resistors. This simplifies installation, improves safety, and saves component costs and installation space.
Q: What window sizes are available for this product?
A: Multiple window sizes are available to suit different cable or busbar diameters. For specific window dimensions, please refer to the product datasheet or contact our sales team.
Q: How to apply for samples? What is the lead time?
A: You can submit a sample application through our website or email. Please provide your company information and target model. Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks.
