High-Quality YK Series Current Transformer from China Suppliers - Reliable Factory Solutions for Power Systems
Product Overview
A CT (Current Transformer) is powered by electromagnetic induction and consists of two windings: a main winding (few turns connected in series with the high-current circuit) and a secondary winding (many turns connected to safety or measurement devices). While the primary winding receives a large current, the secondary winding, which is typically specified at 5A or 1A for the majority of industrial applications, receives a low current. This proportionality, sometimes referred to as the transformation ratio, protects personnel and equipment from potentially dangerous voltages while enabling precise current measurement.
Key Requirements: CTs need strong insulation to sustain high voltage between windings, good linearity to reduce measurement error, and high precision for energy metering.
In summary, because they provide more precise current monitoring and improved fault protection, current transformers are essential for guaranteeing the dependability, effectiveness, and safety of contemporary electrical systems.
Technical Parameters
| Type | Main Loop Current | (mm) Outline Size | ||||
|---|---|---|---|---|---|---|
| YK-30 | < 63 | 30 | 89 | 70 | 28 | 80 |
| Y K-45 | < 100 | 45 | 104 | 85 | 28 | 95 |
| YK-65 | < 250A | 65 | 124 | 105 | 28 | 115 |
| YK-80 | - | 80 | 142 | 122 | 28 | 132 |
| YK-IOO | < 630A Current: 1A |
100 | 162 | 142 | 28 | 152 |
| Rated Primary | ¯ | Rated Second Current: 0.5mA | ||||
Frequently Asked Questions
How does a Current Transformer (CT) operate?
A CT operates on the principle of electromagnetic induction. It consists of a primary winding (with few turns connected in series with the high-current circuit) and a secondary winding (with many turns connected to safety or measurement instruments) to proportionally step down high currents.
What is the typical secondary winding current for industrial CTs?
For the majority of industrial applications, the secondary winding current of a CT is typically specified at 5A or 1A.
Why must the secondary winding of a CT never be open-circuited?
Leaving the secondary winding open-circuited is highly dangerous because it can generate extremely high voltages. These high voltages can damage electrical equipment and pose severe safety hazards to personnel.
What are the core technical requirements for a quality current transformer?
A current transformer requires strong insulation to handle high voltages between windings, excellent linearity to minimize measurement errors, and high precision for accurate energy metering.
What benefits do CTs bring to modern electrical systems?
CTs ensure the reliability, efficiency, and safety of modern electrical systems by providing highly precise current monitoring and enhanced fault protection.