ACREL AKH-0.66 SM-100ii Dual Winding Current Transformer

The ACREL AKH-0.66 SM-100ii Dual Winding Current Transformer is a dual-output current transformer designed to provide both conventional AC current measurement and a standard 4-20 mA analogue signal.

The AC secondary output can be used with measuring and metering equipment, while the separate DC 4-20 mA output can be connected to PLC or DCS equipment for automation and monitoring. The 4-20 mA output uses a DC 24 V auxiliary supply, with the manufacturer's information specifying that this supply is provided by the PLC.

For the SM-100II, the manufacturer's specifications list primary current ratios from 1000 A to 4000 A, with a single primary turn and a 100 x 10 mm busbar configuration. The applicable current ratio and rated burden depend on the selected primary current.

How it works

• The conductor or busbar carrying the primary current passes through the current transformer.
• The transformer produces an AC secondary current signal for measuring or metering equipment.
• A separate DC 4-20 mA output provides a proportional analogue signal for PLC or DCS automation systems.
• The 4-20 mA circuit requires a DC 24 V auxiliary supply from the PLC.

Why choose this product

• Provides both measurement and automation outputs from one current transformer.
• Allows conventional AC current measurement alongside a 4-20 mA signal.
• The 4-20 mA output is suitable for integration with PLC and DCS systems.
• The SM-100II configuration is designed for larger current measurements from 1000 A to 4000 A, depending on the selected ratio.

Benefits

• Supports combined electrical measurement and automation monitoring.
• Provides a familiar 4-20 mA signal for industrial control systems.
• Offers multiple primary current ratio options within the SM-100II range.
• The 100 x 10 mm busbar configuration accommodates the specified installation arrangement.