Home Product Low-voltage Current Transformers CNT-CTK

OPEN-CLOSE TYPE CIRCULAR RESIDUAL CURRENT TRANSFORMER

OPEN-CLOSE TYPE CIRCULAR RESIDUAL CURRENT TRANSFORMER

Product features

◆ Easy installation, opening and closing angle of 90°.
◆ Core piercing structure, flame retardant epoxy resin casting, elastic pad contact surface.

◆ High magnetic conductivity nickel steel or nanocrystalline, good linearity and high sensitivity
◆ Excellent balance characteristics and strong anti electromagnetic interference ability

Scope of application

Smart power system, rural power grid transformation, electrical fire monitoring, fire leakage system, small current grounding system, electromagnetic relay protection, microcomputer protection, etc.

Product Material

Shell

ABS, Flame retardant grade 94-V0
Skeleton

PBT
Iron core

Nickel or nanocrystalline
Internal structure

Environment friendly epoxy resin casting

Inquiry

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Specification Description

Specification

Electrical parameters		Mechanical parameters
Working frequency	50~400Hz	Shell	ABS,Flame retardant grade 94-V0
Rated input	10mA~5A	Skeleton	PBT
Measuring range	10％ln~130％ln	Iron core	Nickel or nanocrystalline
Rated output	0~1V or 0~0.5mA	Internal structure	Environment friend epoxy resin casting
Ratio difference	≤±0.1％	Construction plan	Screw fixation
Phase difference	≤±10 point	Working temperature	-12℃~+45℃
Dielectric strength	2.5KV/7mA/1min	Ambient humidity	≤85％
Insulation resistance	DC500V/1000MΩ/min	Connection mode	Terminal type/shielded strand 1.5m

Model and specification	Rated input(A)	Rated output(mA/V)	Accuracy class
CTK-30	0~1A	0~1V (0.5mA)	0.2 0.5 1.0
CTK-45
CTK-65
CTK-80
CTK-100
CTK-150
CTK-200

Description

Circular switching residual current transformer is mainly used in cable circuit environment. It has simple structure, small volume and flexible application. According to the specifications of the cable used in the main circuit, there are a variety of through hole diameters. The through hole diameter of this series of products ranges from 30mm to 200mm, and the main circuit current includes 63A to 2000A. This series of products can meet the technical requirements of grade 0.2, grade 0.5 and grade 1; At the same time, it can also meet the strict requirements of the new national standard for balance characteristics. The unbalanced current output value can be better than 30mA, 10mA, 5mA, or even 3mA, which greatly reduces the false alarm caused by the magnetic field interference of the main circuit current and provides sufficient guarantee for the reliability of the equipment. Excellent and advanced production process. This series of products meet the requirements of GB 14287.2-2005, GB 14287.2-2014 and IEC 60364-4-42.