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Home > Miniature PCB Mounting Current Transformer > Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
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Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer
Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer

Miniature Round Transformer (GWD-00021-4) Toroidal Core Current Transformer

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Product Description

Basic Specifications

Model NO.
GWD-00021-4
Core
Core-Type Transformer
Cooling Method
Dry-Type Transformer
Winding Type
Separated Winding Transformer
Certification
ISO9001-2000, UL, ISO9001, CE, SGS
Usage
Single-Phase, Rectifier, Power, Distribution Transformer
Frequency
Intermediate Frequency
Shape of Core
Ring
Type
Current Transformer
Shell Material
PBT or ABS
Power Rating
160VAC
Accuracy Class
Class 0.1, 0.2
Working Bound
20Hz~20kHz
Design
Round Current Transformer
HS Code
85044019
Capacity
10000PCS

Product Overview

Current transformers are primarily utilized in various electricity meters, including energy meters and water meters. We provide both standard and DC-immune current transformers. Available mounting options include through-hole, PCB, Busbar, and flying wire types. These products feature high accuracy (up to 0.5) and minimal phase error. Custom designs and manufacturing are available to meet specific technical requirements.

Key Features

All enclosed design with superior mechanical and insulation performance.
Pin design for easy PCB installation.
Compact size suitable for separate usage.
Linear output with high accuracy current.
Lightweight with standard hole dimensions for easy setup.
Toroidal Silicon steel and Nickel Alloy options available.

Technical Parameters

Parameter Specification
Exterior MaterialPBT Resin UL flame retardant rating 94-V0
Interior InsulationEpoxy Encapsulated
Isolation Voltage2500 Vrms for 1 minute
Dielectric Resistance1000 M Ohms @ 500 Vdc
Surge Withstand5000V (1.2/50μs standard shock wave)
Rated Load Resistance100K Ohms
Operating Temperature-25 to +55ºC (Optional -40 to +85ºC)
Frequency Range50 to 400 Hz
Accuracy ClassIEC 60044-1 Class 0.1, 0.2

Typical Applications

Ideal for applications requiring exceptional accuracy with minimal phase angle error, including:

  • Electronic watt-hour meters (IEC 62053-21, -23)
  • Voltage, power, and energy monitoring devices
  • Micro-processor based circuits requiring accurate signal transformation

Product Gallery

Miniature Round Transformer 1
Miniature Round Transformer 2
Miniature Round Transformer 3

Frequently Asked Questions

What is the primary use of these current transformers?
They are mainly used in electricity meters, energy meters, and water meters for accurate current measurement and monitoring.
What mounting types do you offer?
We offer through-hole type, PCB type, Busbar type, and flying wire type mounting to suit different installation needs.
Are these transformers DC immune?
Yes, we provide current transformers both with and without DC immune features, specifically designed for electronic watt-hour meters.
What is the accuracy class of your products?
Our transformers comply with IEC 60044-1 standards, offering high accuracy classes of 0.1, 0.2, and 0.5.
What materials are used for the housing?
The exterior is made of PBT Resin with a UL flame retardant rating of 94-V0, and the interior is epoxy encapsulated for superior insulation.
Can you provide custom designs?
Absolutely. We can design and manufacture current transformers according to strict customer requirements and specific application challenges.

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