Current Transformer--LMZK Wound Current Transformer300/5a

Introduction

Parameters

• Rated primary current: 300A, which is the maximum current that the primary winding of the transformer is designed to handle.
• Rated secondary current: 5A, the standard output current of the secondary winding, which is suitable for connecting to measuring instruments, relays, and other devices.
• Rated transformation ratio: 300/5 = 60. This ratio determines the relationship between the primary and secondary currents and is an important parameter for accurate measurement and protection.
• Accuracy class: Usually, it could be 0.5, 0.2S for measurement accuracy or 5P, 10P for protection applications. The accuracy class indicates the allowable error range of the transformer's current transformation.
• Rated burden: Typically expressed in VA (volt - amperes), such as 10VA, 15VA, or 20VA. It represents the maximum load that the secondary winding can supply while maintaining the specified accuracy.
• Insulation level: It is designed to withstand the relevant voltage levels in the power system, ensuring reliable insulation between the primary and secondary windings and between the windings and the ground.

Characteristics

• High accuracy: The wound structure and precise manufacturing process of the LMZK current transformer contribute to its high - accuracy current transformation, enabling accurate measurement and reliable protection in power systems.
• Good linearity: It shows excellent linearity within its operating range, meaning that the ratio of primary to secondary current remains relatively constant over a wide range of primary current values, which is crucial for accurate measurement and protection.
• Strong overload capacity: It is designed to withstand certain overload conditions without significant damage or loss of accuracy. This allows the transformer to handle short - term current surges in the power system.
• Reliable insulation: With high - quality insulation materials and structures, the LMZK transformer ensures reliable insulation performance, preventing electrical breakdown and leakage, and thus enhancing the safety and stability of the power system.
• Compact and lightweight: The design of the LMZK transformer is often compact and lightweight, making it easy to install and maintain in various power equipment and switchgear.