Current transformer 200/5A class 0.5

The current transformer with an opening core OSCTK-35 200/5A is a precise measurement device of class 0.5, designed to proportionally convert a current of 200 A to a standard value of 5 A. The OSCTK-35 series, with a 35 mm opening, is dedicated to installations with thicker cables and busbars, where the smaller OSCTK-25 series cannot be used.

The OSCTK-35 200/5A transformer ensures an accuracy class of 0.5 and an apparent power of 1.5 VA, which guarantees accurate measurements supporting energy settlements and monitoring of installations. The set includes a measuring cable 2x0.51 mm², 200 cm long. The clamp structure of the core eliminates the need to break the circuit during installation, significantly reducing installation time.

Technical Data

• Transformation Ratio: 200/5A
• Accuracy Class: 0.5
• Apparent Power: 1.5 VA
• Housing: OSCTK-35, hole diameter 35 mm
• Operating Voltage: ≤0.72 kV
• Nominal Input: 1-800 A
• Nominal Output: 5A/1A/mA/mV
• Frequency: 50 Hz-60 Hz
• Operating Temperature: -25°C to +75°C
• Relative Humidity: <90% at 40°C
• Withstand Voltage: 4000 V/1 mA/1 min (50 Hz)
• Protection Category: CAT III
• Connection S1/S2: 2x0.51 mm², L=200 cm
• Insulation Resistance: ≥1 MΩ @ DC 500 V
• Weight: 0.33 kg
• Standards: IEC/EN 60044-1

Applications

• Current measurement in distribution panels and control cabinets
• Cooperation with energy meters, network analyzers, and automation devices
• Industrial installations with cables and busbars of larger cross-sections

Installation

• Openable clamp core - hole diameter 35 mm, without disassembling the busbar
• Dimensions OSCTK-35: width 58 mm, depth 68 mm, height 68 mm