Reliable three-phase oil-immersed transformer
1. Voltage regulation under load without power interruption
2. Low losses and high energy efficiency
3. Strong short-circuit resistance and safe operation
4. Fully sealed structure and long service life
5. Low noise level and excellent heat dissipation
6. Full protection and high reliability
7. Wide range of applications
Product details of SZ9 series transformer
I. Product Introduction
Three-phase oil submerged transformers with switching valves, industrial and mining enterprises, as well as commercial complexes.
It is equipped with high-permeability silicon steel sheets, oxygen-free copper windings and load switches, allowing the voltage to be adjusted under load without power interruption. It features low loss, high stability and long life, providing stable power for scenarios with high voltage fluctuations and high power quality.
II. Main Technical Parameters (Customizable)
Main Features
Rated capacity:
10KVA-5000KVA (10kV class);
50KVA-63000KVA kVA (35kV class)
Communication group: Yyn0, Dyn11
Cooling mode: ONAN (oil-coated natural cooling)
Security and Protection
Protective devices: pressure relief valve, gas relay, alarm thermometer
Insulation level: LI75AC35 (10 kV); LI200AC85 (35 kV)
III. Main features
On-load voltage regulation, no power outage
The on-load tap changer supports manual, automatic, and remote control. Voltage can be precisely adjusted during operation, adapting to large grid fluctuations and ensuring stable power quality.
Ultra-low losses, long-term energy savings
Uses high-permeability silicon steel sheets and a multi-step lap-jointed core. Offers outstanding annual energy savings and reduced operating costs.
Robust design, strong short-circuit withstand capability
Equipped with oxygen-free copper windings, corrugated oil ducts, and a new insulation structure with high mechanical strength. The core is securely fastened and has passed the sudden short-circuit test for safer operation.
Fully sealed and durable, easy maintenance
Corrugated oil tank and fully sealed design slow down oil aging. Full protective devices are standardly configured, requiring no frequent maintenance, suitable for both indoor and outdoor installation.
Standardized and customizable
IV. Application Scenarios
Power distribution: urban and rural substations, industrial park substations, residential district distribution rooms
Industrial production: mining, metallurgy, chemical industry, textiles, electronics and other production lines sensitive to voltage
Commercial infrastructure: shopping malls, hospitals, data centers, railway transportation, airports and stations
Special scenarios: areas with unstable voltage at network endpoints, public facilities with strong load fluctuations
