Transformer current transducer CTK series

clampACsplit-core

Product overview
The CTK series split-core clamp current transformers use either a switchable silicon-steel core or an ultra-microcrystalline core, with pure copper enameled winding and a PC or nylon engineering plastic enclosure. They provide easy live installation and stable linear measurement, suitable for equipment monitoring and energy management in industrial environments.

Main feature description

• Primary current range: 5A–500A.
• Secondary current range: 1mA–5A.
• Inner diameter range: 10–50mm.
• Accuracy class: 0.5–2.
• Iron core receives high-vacuum heat treatment for stable accuracy and high sensitivity.
• Outer shell: high-toughness, flame-retardant PA66 material with good anti-aging properties.
• Split-core clamp-on opening structure for live installation and retrofit without disconnecting the primary conductor.

Product selection parameters (table)
Name — CTK10-60A-20mA | CTK16-150A-50mA | CTK24-200A-66.7mA
Rated Input Current (P1-P2) — 60A | 150A | 200A
Rated Output Current (S1-S2) — 20mA | 50mA | 66.7mA
Ratio (N1-N2) — 1:3000 | 1:3000 | 1:3000
Accuracy (S1-S2) — 0.5 (angle error ≤120') | 0.5 | 0.5
Dielectric Strength — 2.5V/2mA/60SEC (AC50Hz) for all models
Insulation Resistance — ≥1000MΩ (rated voltage 500Vdc) for all models
Operating Frequency — 50–60Hz for all models
Load Resistor — 10Ω for all models

Product application
Split-core clamp current transformers are widely used for low-voltage distribution upgrades, smart grid deployment, and energy consumption monitoring because they allow live installation without removing busbars. Typical applications include energy-efficiency retrofits in large enterprises, urban/rural grid upgrades, data center monitoring, intelligent distribution zones, and power monitoring of environmental-protection equipment.

Technical specifications

• Series: CTK series.
• Primary current range: 5A–500A.
• Secondary current range: 1mA–5A.
• Typical inner diameter: 10–50mm.
• Accuracy class: 0.5–2 (example: 0.5 with angle error ≤120').
• Typical models: CTK10-60A-20mA; CTK16-150A-50mA; CTK24-200A-66.7mA.
• Ratio: 1:3000 (typical for listed models).
• Dielectric strength: 2.5V/2mA/60SEC (AC50Hz).
• Insulation resistance: ≥1000MΩ at 500Vdc.
• Operating frequency: 50–60Hz.
• Load resistor: 10Ω.
• Core: switchable silicon-steel or ultra-microcrystalline, high-vacuum heat treated.
• Winding: pure copper enameled wire.
• Enclosure: PC or nylon engineering plastic; PA66 outer shell (flame-retardant).
• Mounting: split-core clamp-on opening for live installation and easy retrofitting.