Product Description
Product Gallery
Key Features
Low cost solution for high volume applications
More than 50 standard sizes available
Non-symmetrical mounting pattern
Toroidal Silicon steel and Nickel Alloy options
Applications
Exceptional accuracy requirements with minimal phase angle error
Voltage, power and energy monitoring devices
Technical Specifications
| Parameter |
Details |
| Exterior Material | PBT Resin UL flame retardant rating 94-V0 |
| Interior Insulation | Epoxy Encapsulated |
| Isolation Voltage | 2500 Vrms for 1 minute |
| Dielectric Resistance | 1000 M Ohms @ 500 Vdc |
| Surge Withstand | 5000V (1.2/50μs standard shock wave) |
| Rated Load Resistance | 100K Ohms |
| Operating Temperature | -25 to +55ºC, -40 to +85ºC optional |
| Frequency | 50 to 400 Hz |
| Accuracy Class | IEC 60044-1 Part 1 Class 0.1 0.2 |
| Certification | RoHS Compliant CE Approved |
Performance Curves
Outline Drawings & Dimensions
Detailed Performance Data
| Part Number |
Rated Input (A) |
Turn Ratio |
Freq (Hz) |
Burden (Ω) |
Accuracy |
Dimensions (mm) |
| GWTA1111 | 5~30 | 1000:1-2500:1 | 50-400 | ≤200 | 0.1-0.5 | 7.0-22.0-18.0-23.0 |
| GWTA1311 | 5~80 | 1000:1-2500:1 | 50-400 | ≤800 | 0.1-0.5 | 8.0-25.3-18.0-30.0 |
| GWTA21A11 | 5~50 | 1000:1-3000:1 | 50-400 | ≤200 | 0.1-0.5 | 6.9-25.0-11.6-26.5 |
| GWTA21C11 | 5~15 | 1000:1-2500:1 | 50-400 | ≤50 | 0.2-0.5 | 4.5-18.0-10.0-20.0 |
| GWTA22B11 | 5~80 | 1000:1-3000:1 | 50-400 | ≤800 | 0.1-0.5 | 8.7-26-17.5-27.5 |
Frequently Asked Questions
Q1: What is the accuracy class of the GWTA series current transformers?
The GWTA series offers high precision with accuracy classes of 0.1 and 0.2, defined in IEC 60044-1 standards.
Q2: What materials are used for insulation and the exterior casing?
The exterior is made of PBT Resin with a UL flame retardant rating of 94-V0. The interior is fully Epoxy Encapsulated for superior insulation.
Q3: What is the standard operating temperature range?
The standard operating temperature is -25 to +55ºC, with an optional extended range of -40 to +85ºC available upon request.
Q4: Can these transformers handle voltage surges?
Yes, they are designed with a surge withstand capability of 5000V (1.2/50μs standard shock wave).
Q5: What is the lead time for a standard order of 1000 pieces?
For non-customized products with quantities under 1000PCS, the typical delivery time is around 20 days after receiving payment.
Q6: Do you provide a warranty for your products?
We provide a 1-year warranty. Additionally, the expected quality lifetime of the transformer is 10 years.
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