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VTEKE

Current Transformers

TK30 Series Toroidal Current Transformer

Product overview

The VTEKE TK30 Series is a toroidal current transformer designed for reliable current measurement in low-voltage systems using 30 mm busbars. It provides a wide selection of current ratios, accuracy classes and rated burden (VA) options, making it suitable for metering, monitoring and general electrical distribution applications.

Designed to convert high primary currents into standardized current values suitable for electrical measuring, metering and monitoring devices in low-voltage installations.

Key features

  • Window-type current transformer
  • Primary current range: 40–600 A
  • Busbar capacity: 30 × 10 mm
  • Round conductor: Ø26 mm
  • Various mounting options
  • Sealable terminal cover

Specifications

Electrical characteristics

Electrical characteristics
Rated PowerUp to 12.5 VA
Accuracy ClassClass 0.5S, Class 0.5, Class 1.0 or Class 3.0
Test Voltage3 kV for 1 min
Surge Current Limitation FactorFS 5

Mechanical characteristics

Mechanical characteristics
TerminalIntegral terminal cover, high cross-section brass terminal for extra safety
CaseNon-flammable, self-extinguishing ABS/PC
MountingVarious mounting options

Environmental characteristics

Environmental characteristics
Ambient Temperature (Operation)-25 °C to +85 °C
Protection Class / IP RatingIP20

Specific technical characteristics of current sensors

Specific technical characteristics of current sensors
Max. System Voltage0.72 kV
Primary Conductor30 × 10 mm
Round ConductorØ 26 mm
Number of Inputs1

Current measurement circuit

Current measurement circuit
Primary Current Range40 A to 600 A
Secondary Current5 A
Thermal Rated Short-Time CurrentIth = 60 × In
Thermal Rated Continuous CurrentId = 1.2 × In
Rated Frequency50/60 Hz

Standards

Standards
StandardsIEC 60044-1, IEC 61869-2, VDE 0414-1, DIN 57414, BS3938, BS7626, EN 61869-2

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