AKH-0.66/S Dual-Winding Measuring Current Transformer Series

Application

● AC current measurement and current indication
● Remote current measurement with ARTU-M32
● Can be used with ARD3 motor protectors

Basic Parameters

● Models: S-30I / S-40I / S-50II / S-60II / S-80II / S-100II / S-120II / S-200II
● Rated operating voltage: AC 0.66kV
● Primary current: 5-6300A, depending on model and ratio
● Winding 1 output: 5A or 1A AC
● Winding 2 output: 20mA AC
● Accuracy and rated burden: ratio-dependent; see model-selection table
● Rated frequency: 50-60Hz

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Information

Parameter

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Technical Indicators

● Rated operating voltage: AC 0.66kV
● Power-frequency withstand voltage: 3000V/1min, 50Hz
● Rated frequency: 50-60Hz

● Primary current: 5-6300A, depending on model and ratio
● First secondary winding: 5A or 1A AC for current indication
● Second secondary winding: 20mA AC for remote measurement
● Linearity: up to 8 times rated current

● Error at 8 times rated current: 0.2-0.5%
● Ambient air temperature: -30°C to +70°C
● Altitude: ≤3000m
● Installation environment: Indoor locations without direct rain or snow, severe pollution or strong vibration

Installation Instruction

Product Feature

The AKH-0.66/S series has two secondary windings. The first winding (1S1, 1S2) provides a 5A or 1A AC output for current indication. The second winding (2S1, 2S2) provides a 20mA AC output for remote measurement and can be used with an ARTU-M32 remote I/O unit or an ARD3 motor protector. The series remains linear up to eight times rated current and maintains an error of 0.2-0.5% at eight times rated current, making it suitable for motor protection circuits. Its flip-cover housing uses flame-retardant, high-temperature-resistant material, while the core is wound from cold-rolled silicon-steel strip. The design is compact, lightweight and convenient to install.

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