ACREL AKH-0.66 P-100 x 50ii Protection Current Transformer
ACREL AKH-0.66 P-100 x 50ii Protection Current Transformer is a closed type current transformer designed for measuring high AC currents in electrical distribution systems. Its 100 x 50II configuration provides a 103 x 55 mm through opening for busbars or multiple cables, with primary current ratios from 300-450 A up to 2500-4000 A and a 5 A or 1 A secondary output. It can be used with electrical measuring instruments and energy meters for current measurement.
The ACREL AKH-0.66 P-100 x 50ii Protection Current Transformer belongs to the AKH-0.66 II series of closed type current transformers. The series uses a horizontal square hole construction and is designed for use with electrical measuring instruments in power distribution applications. The manufacturer states that the series can accommodate 1 to 6 busbars or multiple cables, depending on the selected configuration.
For the 100 x 50II configuration, the transformer has an overall size of 145 x 155 x 50 mm and a through size of 103 x 55 mm. Available primary current ratios for this configuration range from 300-450/5(1) A through to 2500-4000/5(1) A.
How it works
- The primary conductor passes through the transformer's internal opening.
- The current transformer converts the high primary current into a lower secondary current.
- The available secondary output is 5 A or 1 A, depending on the selected ratio.
- The secondary circuit can then be connected to compatible electrical measuring equipment or an energy meter.
Why choose this product
- Designed specifically for high-current measurement in electrical distribution systems.
- The 100 x 50II opening provides space for larger busbar arrangements or multiple cables.
- Available with several primary current ratios to suit different measurement requirements.
- The closed type construction provides a fixed transformer arrangement around the primary conductor.
- Suitable for use with electrical measuring instruments and energy meters.
Benefits
- Provides a practical way to interface high AC current with compatible measurement equipment.
- Supports different current measurement requirements through multiple available ratios.
- Allows measurement without requiring the measuring instrument to handle the full primary current directly.
- Provides defined physical dimensions for equipment layout and installation planning.

