Technical Specifications

Transformation ratio

  • From 250/5A to 1600/5A

Nominal Power

  • Up to 30VA

Accuracy Class

  • Class 3, Class 1.0, or Class 0.5 depending on the size

Terminal

  • Screw-covered terminals

Box

  • Polycarbonate/PC Self-extinguishing

Mounting

  • On cable or bar

Operating ambient temperature

  • -25 C ~ +85 C

Primary conductor

  • 50 x 80 mm

Round conductor

  • Diameter 50 mm

Number of inputs

  • 1 input

Short-time thermal current

  • Ith = 60 * In

Continuous thermal current

  • Id=1 * In

Nominal frequency

  • 50Hz … 60Hz

Overvoltage current limiting factor

  • FS 5

Test voltage

  • 3kV 1min

System Max Voltage

  • 0.72kV

Applicable Standards

  • IEC 60044-1

  • IEC 61869-2

  • VDE 0414-1

  • DIN57414

  • BS3938

  • BS7626

  • EN 61869-2

Diagrams and Dimensions

Reference Tables

Opening
(mm)		 Series Ratio (A) Accuracy Class Power (VA)
50 x 80 CTK58-250/5 250/5A 3 2.5
CTK58-300/5 300/5A 3 2.5
CTK58-400/5 400/5A 3 2.5
CTK58-600/5 600/5A 1 5
CTK58-800/5 800/5A 1 5
CTK58-1000/5 1000/5A 1 5
CTK58-1250/5 1250/5A 1 5
CTK58-1600/5 1600/5A 0.5 10