The SCTK671 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, significantly reducing installation cost and time. The secondary winding has a built-in precision parallel resistor, providing a safe low-voltage output. Epoxy encapsulation ensures excellent insulation performance and vibration resistance. The high-permeability material provides a wide measuring range. Ratio error: ≤±0.2%. Phase angle error: ≤±10 minutes. Dielectric strength: 2.5KV/1mA/1 minute. It is widely used in electrical fire monitoring, leakage fire prevention, electromagnetic relay protection, and microcomputer protection applications.
| Frequency | 50-400Hz |
| Rated Input | 5A-3000A |
| Measuring range | 5%In-130%In |
| Rated Output | 0-10V(AC) or 0-5A |
| Ratio | ≤ ± 0.2% |
| Phase angle | ≤ ±10min |
| Dielectric strength | 2.5KV/1mA/1min |
| Insulation Resistance | DC500V/100MΩmin |
| Case | PC /UL94-V0 |
| Bobbin | PBT |
| Core | Silicon steel |
| Internal structure | Epoxy |
| Construction | Tie |
| Operating Temp | -25℃~+75℃ |
| Operating Humidity | ≤85% |
| Output Connection | UL101522AWGWire(twinstedwire)2.5m |
| P/N | Rated Input (A) | Output (mA/V) | Accuracy | Dimensions(mm) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ø | A | B | C | D | E | F | G | H | Ø1 | Ø2 | ||||
| SCTK671A-025 | 5-400A (5,100,400A) | 0-200mA 0-10V | 0.2,0.5,1.0 | 25 | 80 | 75 | 22 | 56 | 73 | 53 | 21 | 17 | 5 | 5 |
| SCTK671A-045 | 50-1000A (50,400,1000A) | 0-500mA 0-10V | 0.2,0.5,1.0 | 45 | 108 | 107 | 26 | 71 | 100 | 74 | 24 | 13 | 5 | 5 |
| SCTK671A-065 | 100-1500A (100,1000,1500A) | 0-500mA 0-10V | 0.2,0.5,1.0 | 65 | 128 | 127 | 26 | 91 | 120 | 94 | 27 | 17 | 5 | 5 |
| SCTK671A-080 | 500-2000A (500,1500,2000A) | 0-500mA 0-10V | 0.2,0.5,1.0 | 80 | 144 | 144 | 28 | 97 | 134 | 104 | 27 | 17 | 5 | 5 |
| SCTK671A-100 | 800-3000A (800,2500,3000A) | 0-600mA 0-10V | 0.2,0.5,1.0 | 100 | 174 | 174 | 30 | 126 | 162 | 120 | 27 | 17 | 5 | 5 |
Notes: Product specifications can be customized
A: No. The SCTK671 series uses a split-core structure with a core that opens and closes. It can be installed without disconnecting or removing any cables or busbars. It is especially suitable for retrofit projects and applications where power cannot be turned off, significantly reducing installation costs and time.
A: The secondary winding has a built-in precision parallel resistor. It converts the current signal directly into a safe low-voltage output (0-10V), eliminating the need for external sampling resistors. This simplifies installation, improves safety, and saves component costs and installation space.
A: Epoxy resin potting provides excellent insulation, moisture-proof, dust-proof, and corrosion protection, while also enhancing the product's vibration resistance. The completely enclosed structure ensures long-term stable operation of the transformer in various harsh environments.
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.