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Clamp/Split-Core Current Transformer LMCK-24 • 250/5A • Accuracy Class 1
GH₵205.00
GH₵250.00
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Product Description
Overview
The LMCK-24 250/5A Accuracy Class 1 is a high-capacity, clamp-on (split-core) current transformer designed for general metering, monitoring, and protection applications where 250 A primary current must be converted to 5 A secondary current. With a Class 1 accuracy, it offers ±1% error under rated conditions, making it suitable for many industrial, commercial, and residential energy measurement tasks.
Key Features
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Brand / Series: LMCK-24 (Zhikai) – split-core type with clamp design.
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Primary Current: 250 A AC
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Secondary Current: 5 A AC
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Accuracy: Class 1 (1.0%) — good for general-level metering and monitoring. (Note: Zhikai offers different accuracy classes; confirm with supplier.)
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Inner Window / Diameter: ~ 24 mm for the LMCK-24 variant — fits typical cable or conductor sizes.
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Housing: Flame retardant plastic, moisture protected; stable over time; minimal maintenance needed.
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Self-locking clamp mechanism for easy installation without interrupting the primary conductor.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary current rating (In) | 250 A AC |
| Secondary current rating (Is) | 5 A AC |
| Transformation ratio | 250:5 |
| Accuracy class | 1.0 (±1%) |
| Inner diameter / window opening | ~24 mm (LMCK-24) |
| Housing material | Flame retardant plastic, moisture protected |
| Mounting type | Split-core clamp-on |
| Rated frequency | Typically 50 / 60 Hz (confirm with datasheet) |
| Key caution | Never leave the secondary open when the primary is energized – always have burden/load connected |
Applications
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Energy / power monitoring in panels, switchboards, and distribution boards
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Load monitoring, consumption tracking, and general metering in industrial or commercial installations
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Retrofit installations where the circuit cannot be interrupted
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Use with power meters, PLCs, SCADA systems, etc.
Installation & Safety Notes
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Make sure the conductor to be measured passes cleanly through the ~24 mm opening without strain or deformation.
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The secondary winding must always be terminated (connected to measurement device or load) when the primary is carrying current — an open-circuit secondary can lead to dangerous voltages.
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Secure clamp fully closed, ensure stable mounting, avoid vibration.
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Keep the housing clean and away from extreme temperature or moisture beyond rated limits.
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Check local electrical codes / safety standards for installation.
Benefits
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Allows measurement without disrupting existing wiring (clamp-on)
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Good accuracy (Class 1) for many metering applications
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Durable, low maintenance design
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Compatible with standard instrumentation (meters, analyzers)
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