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Home > High Accuracy Zero Phase Current Transformer > TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
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TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0
TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0

TR Closed Loop Residual Zero Sequence Current Transformer Aperture 45mm Output AC 0-1V 0-5mA Accuracy Level 0.5, 1.0, 2.0

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Product Description

Basic Specifications

Model NO.
TR21314B-003
Phase
Single
Operation Condition
Outdoor
Usage
Protection, Measurement
Winding Form
Small Fixed Type
Insulating Medium
Common Insulating Materials
Installation
Active Type
Magnetic Circuit
Combined Type
Rated Input (AC)
10mA~5A
Rated Output (AC)
0~1V or 0~5mA
Linear Range
5%~120%
Voltage Level
0.4/0.66/0.72kv
Accuracy Class
0.5, 1.0, 2.0
Shell Material
PBT/PC Flame Retardant

Product Overview

Residual current transformer for leakage current measurement of cable lines. The product is simple in structure and flexible in application. According to the cable specifications used in the main circuit, there are various core diameters corresponding to it. The main circuit current includes 63A~2000A. At the same time, it meets the requirements of balanced characteristics, and the unbalanced current output is better than 30mA, 10mA, and 5mA. The product adopts high-quality high-conductivity magnetic core and advanced process technology, meeting GB 14287.2-2014 and GB 13955-2005 requirements.

Current Transformer 1 Current Transformer 2 Current Transformer 3
Current Transformer 4 Current Transformer 5 Current Transformer 6

Product Features

  • Flexible output mode: socket or lead output options.
  • Variety of core hole diameters: from φ12mm to φ260mm.
  • Epoxy resin casting ensures excellent stability.
  • High magnetic permeability nickel steel or nanocrystalline core for high sensitivity.
  • Excellent balance characteristics with strong anti-electromagnetic interference.

Technical Parameters

Electric Performance Parameters Mechanical Parameters
Operating Temp -40ºC~+70ºC Shell Material PBT/PC (94-V0)
Relative Humidity ≤90% Core Material Nickel Steel / Nanocrystalline
Voltage Level 0.4/0.66/0.72kV Output Method Socket / Shielded Wire
Frequency 45~1250Hz Filling Epoxy Resin
Medium Strength 3000Vac/min Environment RoHS Compliant

Dimensions & Diagrams

Dimension Diagram 1 Dimension Diagram 2
Technical Drawing 1
Technical Drawing 2
Technical Drawing 3

Frequently Asked Questions

What is the primary use of this residual current transformer?
It is primarily used for leakage current measurement in cable lines, motor protection, and electrical fire monitoring systems.
What are the available aperture sizes for this series?
The hole diameters range from φ12mm to φ260mm to suit different cable specifications.
Does the product support high-accuracy requirements?
Yes, it meets technical requirements for precision levels of 0.2, 0.5, and 1.0 depending on the specific model.
Is the transformer suitable for outdoor use?
Yes, it is designed for outdoor operation conditions with a wide temperature range of -40ºC to +70ºC.
What materials are used for the casing and core?
The shell is made of flame-retardant PBT/PC (94-V0), and the core uses high permeability nickel steel or nanocrystalline materials.

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