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LMHK-58 (50×80 mm Window) Clamp / Split-Core Current Transformer • 2000/5A • Accuracy Class 0.5
GH₵1,050.00
GH₵1,250.00
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Product Description
Overview
The LMHK-58 2000/5A Accuracy Class 0.5 is a robust, high-capacity split-core current transformer designed for accurate measurement in heavy-duty electrical systems. With a primary current rating of 2000 A AC and secondary output of 5 A, combined with ±0.5% accuracy, this CT is ideal for precise energy monitoring, protection, and metering in commercial and industrial installations.
Key Features
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Primary : Secondary Ratio — 2000/5 A
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Accuracy Class — 0.5, meaning ±0.5% error under rated conditions
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Window / Aperture Size — approx. 50×80 mm, meaning it accommodates large conductors or busbars without needing to open circuits.
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Model / Series — HK-58 from HEYI Electric (LMHK naming)
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Construction — Clamp / split-core type; can be mounted around existing conductors without disconnecting primary wiring.
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Housing and Material — Flame retardant plastic case (PC/UL94-V0), core of silicon steel, internal epoxy / PBT parts.
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Frequency Range — Typically 50-400 Hz
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Operating Temperature — −25 °C to +75 °C
Other Specifications (Typical / Supplier Data)
| Spec | Typical / Expected Value |
|---|---|
| Burden (VA) at Accuracy Class 0.5 | For similar HK-58 models, burdens are often 10 VA for higher primary ratios (e.g. 800-1600 A); for 2000/5A likely around 10-15 VA. |
| Measuring Range | Usually 10% In to ~120% In without large loss of accuracy (for HK series) |
| Dielectric Strength / Isolation | Typically around 2.5 kV AC for 1 minute test, much like other HK models. |
| Phase Angle Error | Small; HK-series phase angle ≤ ±30 minutes (at rated current/burden) in many specs. |
| Insulation Resistance | DC 500 V, ≥ 100 MΩ for other HK-58 models. |
Applications
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Large power panels, switchgear and distribution boards needing accurate current measurement for high loads (up to 2000 A)
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Industrial installations: motors, large transformers, busbars, substations
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Energy management systems, power metering, auditing, protection relays
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Retrofit or upgrade works where wiring cannot be disconnected due to clamp/split-core design
Installation & Safety Notes
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Ensure the conductor or busbar fits comfortably through the 50×80 mm window; avoid bending insulation or tight fit
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Always connect secondary to the measurement device or burden; never leave secondary open when primary is energized
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Clamp should be fully closed and locked; ensure proper mechanical mounting
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Avoid exposure to excessive moisture or environmental extremes beyond rated spec
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Follow local electrical and safety codes/standards
Benefits
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High precision (0.5%) ideal for critical measurements
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Large aperture allows use in high current systems without circuit disruption
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Clamp/split-core design simplifies installation and maintenance
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Durable with flame-retardant case, high insulation & dielectric strength
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