ACREL AKH-0.66 G-30i Low Voltage Current Transformer
ACREL AKH-0.66 G-30i Low Voltage Current Transformer is a low voltage current transformer designed for accurate current measurement on busbars and cables. Its clamshell design and transparent polycarbonate cover make installation and wiring straightforward, while its metering-grade accuracy suits energy monitoring and switchboard applications.
The ACREL AKH-0.66 G-30i Low Voltage Current Transformer is built for measuring alternating current on low voltage busbars and cables. It forms part of Acrel's AKH-0.66/G high precision metering range, and is commonly paired with energy meters and power monitoring instruments in switchboards and electrical distribution sets.
How it works
- The transformer clamps around a busbar or cable, using electromagnetic induction to step down the primary current to a proportional secondary current output (for example, ratios such as 100A/5A).
- The clamshell body opens on a hinge, so the CT can be fitted around an existing conductor without disconnecting it at the ends.
- The transparent polycarbonate flip cover allows the secondary lead wiring to be seen clearly during installation and inspection.
- Secondary output feeds into a compatible energy meter or measuring instrument, which converts the current signal into a usable reading.
Why choose this product
- Sourced from a manufacturer with published, CE-certified documentation and a defined accuracy standard (GB 20840.2-2014).
- Available across a wide range of current ratios (10A/5A through to 400A/5A) within the G-30I size, so it can be matched to the actual load rather than oversized or undersized.
- Suited to metering applications requiring 0.2 or 0.5S accuracy class, which is a step up from basic protection-grade CTs.
- Compact outline (62mm x 78mm x 45mm) makes it a practical fit inside standard switchboard and distribution enclosures.
Benefits
- Clear wiring visibility through the polycarbonate cover reduces installation errors.
- Class 0.2 and 0.5S accuracy options support both general metering and higher precision measurement needs.
- Rated for AC 0.66kV operation, matching standard low voltage distribution systems.
- Designed to GB 20840.2-2014 and verified under JJG313-2010, giving a documented basis for accuracy.


