Y2 Series Current Transformer - High-Quality Electrical Equipment from China Suppliers and Factory
Product Overview
A CT is driven by electromagnetic induction and has two windings: a secondary winding (many turns linked to safety or measurement devices) and a primary winding (few turns connected in series with the high-current circuit). The secondary winding, which is normally defined at 5A or 1A for most industrial applications, receives a low current, whereas the primary winding receives a high current. This proportionality, also known as the transformation ratio, provides accurate current measurement while shielding workers and equipment from potentially hazardous voltages.
CTs require high precision (for energy metering), good linearity (to decrease measurement error), and insulation strength (to maintain high voltage between windings).
CRITICAL SAFETY WARNING: The secondary winding should never be open-circuited while using a CT. This is because an open circuit may generate extraordinarily high voltages that can harm electrical devices.
To summarize, current transformers are critical for ensuring the dependability, efficacy, and safety of modern electrical systems because they allow more accurate current monitoring and enhanced fault protection.
Technical Parameters
| Type | Main Loop Current | (mm) Outline Size | ||||
|---|---|---|---|---|---|---|
| Y2-30 | <63A | 30 | 89 | 70 | 28 | 80 |
| Y2-45 | - | 45 | - | 85 | 28 | 95 |
| Y2-65 | < 250A | 65 | 124 | 105 | 28 | 115 |
| Y2-80 | - | 80 | 142 | 122 | 28 | 132 |
| Y2-100 | <630A | 100 | 162 | 142 | 28 | 152 |
| Rated Primary Current: IA | Rated Second Current: 0.5mA | |||||
Frequently Asked Questions
A CT operates via electromagnetic induction using two windings: a primary winding (few turns) connected to the high-current circuit and a secondary winding (many turns) connected to safety or measurement devices, scaling down high currents proportionally.
The transformation ratio is the proportional relationship between the high primary current and the lower secondary current (typically rated at 5A or 1A). This ratio allows for safe, accurate measurement of high currents.
Current Transformers require high precision for energy metering, excellent linearity to reduce measurement errors, and strong insulation to handle high voltages between the primary and secondary windings.
An open circuit on the secondary winding while the CT is active can generate extremely high, hazardous voltages. This can lead to equipment damage and severe safety risks for operators.
They ensure system dependability and safety by facilitating precise current monitoring, protecting measurement equipment, and enabling enhanced fault protection in high-voltage environments.