Product overview
The VTEKE MSK50 Series is a compact split core current transformer for current measurement in low-voltage electrical systems. The core is closed by side clips, so it can be clipped around an existing cable or busbar without disconnecting the conductor, and secured with a cable tie. Different current ratios and accuracy classes are available to meet various measurement requirements.
Designed for retrofit and maintenance work in low-voltage installations: the core opens so the transformer can be fitted around an existing cable or busbar without disconnecting the conductor, converting high primary currents into standardized current values suitable for electrical measuring, metering and monitoring devices.
Key features
- Split core current transformer, closed by side clips
- Primary current range: 100–800 A
- Primary conductor: 50 × 50 mm (Ø50)
- Accuracy classes: Class 1.0, Class 3.0 or Class 5.0
- Rated power up to 5 VA
- 1 metre secondary connection cable
- Mounts on cable or busbar with a cable tie
Specifications
Standards
| Standards | IEC 60044-1, IEC 61869-2, VDE 0414-1, DIN57414, BS3938, BS7626, EN 61869-2 |
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Electrical characteristics
| Rated Power | Up to 5 VA |
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| Accuracy Class | Class 1.0, Class 3.0 or Class 5.0 |
| Test Voltage | 3 kV for 1 min |
| Surge Current Limitation Factor | FS 5 |
Mechanical characteristics
| Terminal | 1 metre black and red cable for secondary connection |
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| Case | Non-flammable, self-extinguishing ABS |
| Mounting | On cable or busbar, using the front and back supports with a cable tie |
| Dimensions (W × D × H) | 97 × 58 × 119 mm |
Environmental characteristics
| Ambient Temperature (Operation) | -25 °C to +85 °C |
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Specific technical characteristics of current sensors
| Max. System Voltage | 0.72 kV |
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| Number of Inputs | 1 |
| Primary Conductor | 50 × 50 mm (Ø50) |
Current measurement circuit
| Secondary Current | 5 A |
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| Rated Frequency | 50 Hz … 60 Hz |
| Thermal Rated Short-Time Current | Ith = 60 In |
| Thermal Rated Continuous Current | Id = 1 × In |
| Primary Current Range | 100/5 A to 800/5 A |
Technical documents
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