Eti-Polam CTR-30 Current Transformer 100/5A 1.5VA Class 0.5

The Eti-Polam CTR-30 is a high-precision current transformer engineered for accurate electrical measurement and monitoring in power distribution systems. With a transformation ratio of 100/5A and a rated power of 1.5VA, this device provides reliable signal conversion for various metering and protection applications. It is built to meet Class 0.5 accuracy standards, ensuring consistent performance in demanding industrial and commercial environments.

Advantages

The primary benefit of the CTR-30 is its high measurement precision, which is critical for maintaining accurate energy billing and system monitoring. Its robust construction ensures long-term stability and reliability, minimizing the need for frequent maintenance or recalibration. The compact design allows for efficient installation in standard electrical panels, making it a versatile solution for modern power infrastructure.

Suitable for

• Industrial power distribution monitoring
• Commercial energy metering systems
• Protection relay signal input
• Electrical load management and analysis

When it may not be suitable

This transformer is not intended for high-voltage applications exceeding its specified insulation levels. It is also not suitable for measuring currents outside the 100A primary range, as this would compromise accuracy and potentially damage the connected secondary equipment.

Key specifications

• Transformation ratio: 100/5A
• Rated power: 1.5VA
• Accuracy class: 0.5
• Application: Current measurement and monitoring

How to use

The current transformer should be installed by a qualified professional in accordance with local electrical safety regulations. The primary conductor must be passed through the aperture of the transformer, ensuring proper orientation as indicated by the device markings. The secondary terminals must be connected to the corresponding metering or protection equipment using appropriately sized wiring. Ensure all connections are secure and that the secondary circuit is never left open while the primary circuit is energized.

What to consider before purchase

• Verify that the transformation ratio matches your specific load requirements
• Ensure the secondary equipment is compatible with a 5A output
• Check the available space in your electrical cabinet for mounting
• Confirm that the accuracy class meets your regulatory or operational needs

Usage recommendations

Always ensure the secondary circuit is connected to a load or short-circuited before energizing the primary conductor to prevent dangerous voltage buildup.