ZLS-10kV Excitation Rectifier Transformer

The ZLS-10kV series excitation rectifier transformer is a highly specialized power distribution unit engineered primarily for generator self-excitation co-excitation systems. This product line is categorized into three core configurations to suit diverse industrial layouts: oil-immersed excitation rectifier transformers, ordinary dry-type excitation rectifier transformers, and open-type dry-type transformers. Designed to withstand intense electromagnetic stress, this transformer features an exceptionally robust magnetic shielding capability. By integrating an electrostatic shielding layer between the primary and secondary windings, it effectively neutralizes stray capacitance, suppressing the harmful transmission of higher harmonics from the rectifier system back into the power grid.

Structurally, the ZLS series is meticulously designed to support high-capacity, continuous excitation demands. The design capacity is engineered with a generous margin that strictly exceeds the actual rectifier container volume, ensuring reliable long-term grid stability and system security. Mechanically, the iron core is constructed using premium double-sided insulated grain-oriented silicon steel sheets with full-mitred joints. It utilizes an advanced five-step lap-stack core crafting process to minimize no-load losses, exciting current, and operational vibration noise. Both high and low-voltage coils are wound with premium copper foil or segmented copper conductors and cast in imported epoxy resin under a strict vacuum process, ensuring a flame-retardant, crack-resistant, and maintenance-free lifetime.

• Superior Harmonic Suppression: Built-in electrostatic shielding between windings isolates stray capacitance and blocks parasitic harmonic interference.

• High-Strength Core Crafting: Features a five-step lap-stack core design using grain-oriented silicon steel to minimize excitation current and noise.

• Advanced Epoxy Casting Insulation: Coils are cast with premium flame-retardant epoxy resin, achieving a UL V0 rating with zero toxic gas emission during thermal stress.

• Robust Short-Circuit Resistance: High-voltage coils use segmented copper foil/conductors, providing exceptional mechanical stability against severe grid faults.

• Smart Thermal Regulation: Equipped with independent Pt100 temperature sensors and an automated control interface supporting long-distance signal routing up to 20 meters.

1. Z: Rectifier system application configuration.

2. L: Excitation loop functional design.

3. S: Three-phase grid distribution configuration.

4. [Modular Slots]: Denotes Rated Capacity (kVA) / High-Voltage Class Rating (kV).

5. (Note: "G" indicates dry-type encapsulation, while "C" specifies a thin-walled cast resin structure).

• Ambient Temperature Range: Optimized for operation under a maximum ambient temperature of +40°C, with an altitude ceiling of 1000 meters.

• Corrosive & Dust Control: Designed for installation in environments completely free from severe dust, explosive hazards, chemical depositions, or corrosive gases.

• Grid Waveform Limits: Requires a power supply voltage waveform approximating a standard sine wave, with a maximum phase asymmetry limit of 1%.

• Mechanical Stability Zones: Suitable for structural setups experiencing minimal external vibration, with a maximum allowable installation tilt angle of 5%.

When powering heavy industrial generation infrastructure, mitigating harmonic feedback while sustaining high thermal stress is vital. The JNCN ZLS-10kV series offers unmatched system advantages:

• Complete Grid Protection: The integrated electrostatic copper shield eliminates parasitic capacitance, preventing rectifier harmonics from distorting the main utility line.

• Industrial-Grade Endurance: Built with a high capacity safety margin that outperforms nominal rectifier requirements, ensuring stable performance during grid fluctuations.

• Maximum Plant Fire Safety: Utilizing advanced vacuum-cast epoxy resin insulation that meets UL V0 standards, the coils are self-extinguishing and will not emit toxic gases.

• Precision Thermal Monitoring: Features built-in Pt100 core sensors paired with an intelligent digital thermostat, allowing remote automation tracking from up to 20 meters away.