ACREL AKH-0.66 SM-120ii Dual Winding Current Transformer

The ACREL AKH-0.66 SM-120ii Dual Winding Current Transformer is part of the AKH-0.66/SM series of dual-output current transformers. The transformer provides two independent outputs, allowing the measured AC current to be used by conventional measuring or metering equipment while also providing a 4-20 mA signal for PLC or DCS analogue inputs.

For the SM-120II model, Acrel specifies a 120 mm busbar opening with provision for 1 to 3 busbars. The available primary current ratios for this model include 2000 A and 2500 A to 5000 A, with the exact ratio selected according to the application.

How it works

• The primary conductor or busbar passes through the current transformer opening.
• The transformer converts the primary AC current into a proportional secondary signal.
• The first output provides AC 0-5 A or AC 0-1 A for measuring and metering equipment.
• The second output provides DC 4-20 mA for PLC or DCS analogue inputs.
• The 4-20 mA output requires DC 24 V auxiliary power supplied by the PLC according to the manufacturer's information.

Why choose this product

• Provides both conventional AC current and 4-20 mA outputs from the same transformer.
• Suitable where current measurement needs to be integrated with automation equipment.
• The SM-120II format is designed for larger busbar installations.
• Available with several primary current ratios within the model's specified range.

Benefits

• Allows current measurement to be shared between metering and automation systems.
• Reduces the need for separate current measurement devices for these two signal requirements.
• Provides a standard 4-20 mA signal suitable for PLC and DCS analogue input systems.
• Supports primary current measurement up to 5000 A for the specified SM-120II model range.