Current Transformers
CK20 Series Toroidal Current Transformer
Primary Current (A)
Secondary Current (A)
Accuracy Class
Burden (VA)
Choose primary current, secondary current, accuracy class, burden to see the product code.
Product overview
The VTEKE CK20 Series is a compact toroidal current transformer designed for accurate current measurement in low-voltage electrical systems where installation space is limited. Its compact dimensions make it particularly suitable for smaller conductors and space-constrained panel designs. Different current ratios, accuracy classes and rated burden (VA) options are available to meet various measurement requirements.
Designed to convert high primary currents into standardized current values suitable for electrical measuring, metering and monitoring devices in low-voltage installations.
Key features
- Window-type CT designed for cable conductors
- Primary current range: 30–300 A
- Round conductor: Ø20 mm
- Compact construction for space-limited installations
- Various mounting options
- Sealable terminal cover
Specifications
Electrical characteristics
| Rated Power | Up to 5 VA |
|---|---|
| Accuracy Class | Class 1.0 or Class 0.5 |
| Test Voltage | 3 kV for 1 min |
| Surge Current Limitation Factor | FS 5 |
Mechanical characteristics
| Terminal | Integral terminal cover, high cross-section brass terminal for extra safety |
|---|---|
| Case | Non-flammable, self-extinguishing ABS/PC |
| Mounting | Various mounting options |
Environmental characteristics
| Ambient Temperature (Operation) | -25 °C to +85 °C |
|---|---|
| Protection Class / IP Rating | IP20 |
Specific technical characteristics of current sensors
| Max. System Voltage | 0.72 kV |
|---|---|
| Primary Conductor | 20 mm |
| Round Conductor | Ø 20 mm |
| Number of Inputs | 1 |
Current measurement circuit
| Primary Current Range | 30 A to 300 A |
|---|---|
| Secondary Current | 5 A |
| Thermal Rated Short-Time Current | Ith = 60 × In |
| Thermal Rated Continuous Current | Id = 1.2 × In |
| Rated Frequency | 50/60 Hz |
Standards
| Standards | IEC 60044-1, IEC 61869-2, VDE 0414-1, DIN 57414, BS3938, BS7626, EN 61869-2 |
|---|
Technical documents
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